aerocom:phase3-experiments

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
aerocom:phase3-experiments [2019-01-04 18:05:19]
kt2347@columbia.edu Major restructuring, and addition of experiments 		aerocom:phase3-experiments [2022-05-31 09:29:31] (current)
Line 1: Line 1:
 +ATTENTION - THIS WIKI PAGE IS NO LONGER UPDATED - PLEASE GO TO [[http://aerocom.met.no/|aerocom.met.no]]FOR LATEST INFO
 +
 ====== AeroCom phase III experiments ====== ====== AeroCom phase III experiments ======
  
Line 7: Line 9:
 Files from AeroCom phase III experiments should be found on the aerocom-users server under Files from AeroCom phase III experiments should be found on the aerocom-users server under
  
-/metno/aerocom/users/aerocom1/AEROCOM-PHASE-III/{model}+/metno/aerocom-users-database/AEROCOM-PHASE-III/{model}
  
 For submissions of data to any experiment described below, please follow the instructions given [[aerocom:data_submission|here]] For submissions of data to any experiment described below, please follow the instructions given [[aerocom:data_submission|here]]
  
-An excel file with all diagnostics requests can be found here (link to be added soon). 
  
 +===== Common requirement: Harmonized anthropogenic, biomass burning, and volcanic emission data sets =====
  
-===== Emissions =====+The currently proposed and on-going AeroCom Phase III model experiments require to use the same emission datasets for all simulations:
  
-Emissions are not requested to be harmonized. However, it is recommended to make use of the latest HTAP_v2 emissions. +  * Anthropogenic emissions: Community Emission Data System (CEDS) for CMIP6, currently available for 1750-2014 
-See more details on htap website: [[http://iek8wikis.iek.fz-juelich.de/HTAPWiki/WP1.1|http://iek8wikis.iek.fz-juelich.de/HTAPWiki/WP1.1]]+  * Biomass burning emissions: CEDS for CMIP6, currently available for 1750-2015 
 +  * Volcanic emission is based on the TOMS- and OMI-based estimates, currently available for 1979-2018 (the eruptive (1979- Feb 2019) and degassing (2000-2005) volcanic SO2 emissions from S. Carn in an excel sheet can be found here {{ :aerocom:Carn_VolcEmi_erup+degassing_as-of-Feb2019.xls |}}.
  
-in 2016 also the new CMIP6 emissions became available:  +A brief description, recommendations of anthropogenic emission beyond 2014 and biomass burning emissions beyond 2015, additional biomass burning data set, access to the emission data sets, and other information can be found here {{ :aerocom:A3_anthro-bb-volc_emission_requirements_v2019-02-26.pdf |}}.
-[[http://www.globalchange.umd.edu/ceds/ceds-cmip6-data/]]+
  
 +===== Common requirement: Unified transport and deposition tracers =====
  
 +To diagnose and evaluate the characteristics and model differences of transport and removal processes, it is important to implement common tracers of transport and dry/wet removal processes across all models.
 +
 +  * Transport tracer: CO with 50-day lifetime with prescribed direct anthropogenic and biomass burning emissions, oxidation from NMVOC from anthropogenic, biomass burning, and biogenic emissions, and oxidation from CH4.
 +  * Removal tracer: Pb-210, which is formed from Rn-222 decay (5.5-day lifetime). Its dry/wet removal processes should be treated the same as sulfate. 
 +
 +Descriptions of tracers, access to the CO tracer sources and Rn-222 emission, and other information can be found here {{ :aerocom:A3_tracer_requirements_v2019-10-10c.pdf |}}.
 +
 +===== Common AeroCom phase III Diagnostics Request 2019 =====
 +
 +The diagnostics for most of the experiments mentioned on this wiki page are put together here:
 +
 +[[https://docs.google.com/spreadsheets/d/1NiHLVTDsBo0JEBSnnDECNI2ojUnCVlxuy2PFrsRJW38/edit?usp=sharing | AeroCom experiments diagnostics sheets 28.2.2019]]
 +
 +Be aware of updates ! versions will have a date attached.
 ===== AeroCom Control EXPERIMENT 2019 ===== ===== AeroCom Control EXPERIMENT 2019 =====
  
-A short description (about a paragraph) should go here.+As for earlier major AeroCom studies, the intention here is to assemble in spring 2019 a set of model simulations representing the state of the art of aerosol modeling. Most important diagnostics for analysing aerosol life cycles and forcing are requested. Simulations for years 2010 and 1850 shall form the basis for a reference paper on phase III of AeroCom and additional experiments and analysis (eg absorption, aircraft, in-situ comparison, historical, median model...). Diagnostics are coordinated with AerChemMIP, so modelling groups may choose to link to simulations made under CMIP6. Submission of data is expected to be done to the AeroCom database at MetNo.
  
-Contact: Michael Schulz+Contact: Michael Schulz michael.schulz@met.no
  
-Status: under construction (Jan 2019) +Status: ACTIVE taking submissions, Diagnostics and new instructions (new filenames) are assembled in new tables, see below (Feb 2019).   
-Submission deadline: TBD + 
-Timeline: TBD+Submission deadline: **01 June 2019** ( welcome earlier when submitting eg for other experiments !) 
 + 
 +Timeline: Initial analysis of forcing, life cycle analysis, comparison to basic parameters such as AOD, deposition, concentrations, scattering and absoprtion until next AeroCom workshop in Sep 2019, Barcelona. Reference publication to be submitted by December 2019.
  
 Column with diagnostic requests in excel sheet: AP3-CTRL Column with diagnostic requests in excel sheet: AP3-CTRL
-Document(s) with more info: TBD 
  
 +Document(s) with more info: Kept in Google sheets see above
  
 +===== Aerosol absorption analysis (experiment) =====
 +
 +Aerosol shortwave absorption affects precipitation and other atmospheric phenomena, through local heating, altering lapse rates and affecting cloud formation. Presently, however, absorption from BC, brown carbon (absorbing OC) and dust is very diversely quantified among AeroCom models. There is also no strong observational constraint on the total, global (or regional) aerosol absorption (see paper linked below). Further, BC - the most strongly absorbing anthropogenic aerosol species - has been shown to cause significant spread in predicted precipitation change under global warming between recent Earth System Models. In response, this AeroCom Phase III experiment aims to better quantify the sources of intermodel spread in (total and per-species) short wave aerosol absorption. We request only standard fields (abs550aer, od550aer etc.), but at three wavelengths (550nm, 440nm, 870nm), to allow for more rigorous comparisons to observations. We also request per-species monthly absorption, at the three wavelengths, for BC, BrC and dust separately. Building on this analysis, we aim to provide an updated, hopefully stronger constraint on global mean aerosol absorption. 
 +
 +Contact: Bjorn Samset <b.h.samset@cicero.oslo.no>; Maria Sand <maria.sand@cicero.oslo.no>
 +
 +Status: Active. Taking submissions.
 +
 +Submission deadline: 01. June 2019
 +
 +Timeline: Initial analysis completed by AeroCom 2019. Paper to be submitted by December 2019 (IPCC deadline). 
 +
 +Column with diagnostic requests in excel sheet: ABS
 +
 +Document(s) with more info: [[https://link.springer.com/article/10.1007/s40641-018-0091-4|Aerosol Absorption: Progress Towards Global and Regional Constraints (Samset et al. 2018)]]
 +
 +===== TOA flux assessment using CERES =====
 +
 +The Clouds and the Earth’s Radiant Energy System (CERES) project produces a long-term global climate data record (CDR) that can be used to detect decadal changes in the Earth’s radiation budget (ERB) from the surface to the top-of-atmosphere (TOA). The CERES Energy Balanced and Filled (EBAF) product includes monthly mean shortwave (SW), longwave (LW), and net TOA all-sky and clear-sky radiative fluxes over 1 degree latitude by 1 degree longitude regions. The EBAF SW and LW fluxes are adjusted within their uncertainties to be consistent with the heat storage in the Earth-atmosphere system. EBAF also provides a gap-free monthly mean clear-sky flux map by inferring clear-sky fluxes from both CERES and MODIS measurement. Additionally, EBAF product also includes MODIS-based monthly mean cloud properties (cloud amount, optical depth, effective pressure, and daytime optical depth). 
 +
 +Comparisons between AeroCom phase III experiments with CERES EBAF fluxes will focus on:
 +
 +1) Clear-sky flux comparisons between model outputs and CERES EBAF. Clear-sky flux differences are closely linked to aerosol differences, land and snow/ice surface albedo differences. Thus the clear-sky flux comparisons can reveal deficiencies in aerosol simulations and the surface albedo. This evaluation also has a clear linkage to "Remote Sensing Evaluation". 
 +
 +2) All-sky flux comparisons between model outputs and CERES EBAF. All-sky flux differences are mostly related to cloud property differences. SW and LW fluxes are sensitive to different cloud properties and their differences can provide insights in the cloud filed simulated by the models. 
 +
 +3) Decadal trends comparison between model output and CERES EBAF at different spatial scales. These flux trends can be linked with trends of aerosol optical depth, sea ice, and cloud properties to better constrain model simulation. 
 +
 +Contact: Wenying Su, wenying.su-1@nasa.gov
 +
 +Status: Accepting model submission.
 +
 +Submission deadline: July 2019
 +
 +Timeline: TBD
 +
 +Column with diagnostic requests in excel sheet: AP3-CTRL
 +
 +Document(s) with more info: TBD
 ===== Remote Sensing evaluation for AeroCom Control 2016 ===== ===== Remote Sensing evaluation for AeroCom Control 2016 =====
  
Line 45: Line 103:
 Contact: Nick Schutgens (Vrije Universiteit, NL); n.a.j.schutgens@vu.nl Contact: Nick Schutgens (Vrije Universiteit, NL); n.a.j.schutgens@vu.nl
  
-Status: TBD +Status:  
-Submission deadline: May 1 2017 (proposed) + 
-Timeline: TBD+Submission deadline: Submissions still accepted but contact Nick first 
 + 
 +Timeline: Two papers submitted by the end of 2019  
 + 
 +Column with diagnostic requests in excel sheet: 3 hourly 2D and 3D aerosol fields (mostly AOT)
  
-Column with diagnostic requests in excel sheet: TBD 
 Document(s) with more info: {{:aerocom:aerocom3_CTRL2016_RemSens_v2.pdf|}} or by emailing Nick Schutgens. Document(s) with more info: {{:aerocom:aerocom3_CTRL2016_RemSens_v2.pdf|}} or by emailing Nick Schutgens.
  
Line 60: Line 121:
  
 Status: TBD Status: TBD
 +
 Submission deadline: TBD Submission deadline: TBD
 +
 Timeline: TBD Timeline: TBD
 +
 Follow project progress here: https://docs.google.com/document/d/1buqxPbJ7DhWrwBUgTGV8b47HWAzaeyTTeSzViq8Fo4M/edit?usp=sharing  Follow project progress here: https://docs.google.com/document/d/1buqxPbJ7DhWrwBUgTGV8b47HWAzaeyTTeSzViq8Fo4M/edit?usp=sharing 
  
 Column with diagnostic requests in excel sheet: TBD Column with diagnostic requests in excel sheet: TBD
 +
 Document(s) with more info: Document(s) with more info:
 +
 List of stations with in-situ measurements to be used in comparison project: {{:aerocom:INSITU_Station_Inventory.xlsx|}} List of stations with in-situ measurements to be used in comparison project: {{:aerocom:INSITU_Station_Inventory.xlsx|}}
 +
 Modeller commitments (updated as commitments are made): https://docs.google.com/spreadsheets/d/1NL-l5WQ0kUFQkq8SPEvAq2fmtCzHIjFWnoTmKsthUhU/edit?usp=sharing Modeller commitments (updated as commitments are made): https://docs.google.com/spreadsheets/d/1NL-l5WQ0kUFQkq8SPEvAq2fmtCzHIjFWnoTmKsthUhU/edit?usp=sharing
-Tools to extract station data at station locations from model fields, output into station netcdf file: 
-ncl: [[https://github.com/kaizhangpnl/sample_insitu]] kindly provided by Kai Zhang   
  
- 
-===== In-situ Particle Number Size Distribution (PNSD) Measurement Comparison ===== 
- 
-A short description (about a paragraph) should go here. A detailed description can be found here: {{:aerocom:AeroComPIII_INSITU_PNSD_description_v1.pdf|}} 
- 
-Contact: Markus Fiebig (NILU), Markus.Fiebig@nilu.no; Stephen Platt (NILU), StephenMatthew.Platt@nilu.no 
- 
-Status: TBD 
-Submission deadline: TBD 
-Timeline: TBD 
- 
-Column with diagnostic requests in excel sheet: TBD 
-Document(s) with more info:  
-List of stations with in-situ measurements to be used in comparison project {{:aerocom:20160310_INSITU_PNSD_station_list.xlsx|}} 
 Tools to extract station data at station locations from model fields, output into station netcdf file: Tools to extract station data at station locations from model fields, output into station netcdf file:
 ncl: [[https://github.com/kaizhangpnl/sample_insitu]] kindly provided by Kai Zhang   ncl: [[https://github.com/kaizhangpnl/sample_insitu]] kindly provided by Kai Zhang  
  
 +===== Historical experiment =====
  
-===== Biomass Burning emissions experiments =====+The main aim of the historical experiment is to understand regional trends in aerosol distribution from 1850 to 2015 and make an AeroCom reference aerosol distribution dataset (1850-2015). This experiment will also quantify the aerosol impact on TOA and surface forcing with a main emphasis on the direct aerosol effect. We underscore that the CMIP6 CEDS emissions must be used for the historical simulations. Simulations can either be performed with fixed sea-surface temperature (SSTs), historically evolving SSTs or fixed meteorology for one year. We encourage radiative forcing simulations, but if difficult to achieve on a short time frame we are interested also to have the aerosol fields without forcing diagnostics. To perform radiative forcing calculation in the case of using SST fields, we encourage double radiation calls. This output should as a minimum be every 10th year until 1980, thereafter a minimum of every 5th year 1980-2015 (preference yearly).
  
-A short description (about a paragraph) should go here. A detailed description can be found here (updated November 26, 2014): {{:aerocom:aerocom_bbexperiment_proposed_v3.2.pdf |File}}+Contact: Gunnar Myhre gunnar.myhre@cicero.oslo.no
  
-Contact: Mariya Petrenko (NASA GSFC, USA; ORAU, USA), mariya.m.petrenko@nasa.gov +Status: Diagnostics and new instructions (new filenames) are given in the new excel sheet. Taking submission.
  
-Status: TBD +Submission deadline: 01 June 2019
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +Timeline: Initial analysis of trends in aerosols distribution and radiative forcing ready by next AeroCom workshop in September 2019. Paper to be submitted by December 2019 (IPCC deadline).
-Document(s) with more info:  +
-Model output file naming convention (September 11, 2014) {{:aerocom:aerocom3_bbexperiment_filenames.txt |File}}  +
  
-Variable names for model output (highlighted in blue/cyan; October 16, 2014) {{:aerocom:htap2_variables_09102014_bbvar.xlsx |File}} <- Satellite overpass-time output is no longer requested. Only 3-hr and daily.+Column with diagnostic requests in excel sheet: HIST 
  
-Model Description (Questionnaires filled by the groups in 2015): +Document(s) with more info:Concentrations and radiative forcing of anthropogenic aerosols from 1750 to 2014 simulated with the Oslo CTM3 and CEDS emission inventory (Lund et al., 2018) https://www.geosci-model-dev.net/11/4909/2018/gmd-11-4909-2018-discussion.html
-CAM5 (Kai Zhang, Hailong Wang, Xiaohong Liu): {{:aerocom:CAM5_Liu.xlsx|}} {{:aerocom:CAM5_References_forAeroComQuestionnaie_Liu.docx|}} +
-CIFS (Johannes Kaiser, Samuel Remy): {{:aerocom:Aerocom_BB_models_Questionnaire_CIFS.xlsx|}} {{:aerocom:CIFS_Figures_forQuestionnaire.pdf|}} {{:aerocom:CIFS_References_forAeroComQuestionnaire.docx|}} +
-ECHAM6-SALSA (Tero Mielonen, Tommi Bergman):{{:aerocom:Aerocom_BB_models_Questionnaire_ECHAM6-SALSA.xlsx|}} +
-GEOS-CHEM (Gabriele Curci, Anna Protonotariou): {{:aerocom:Aerocom_BB_models_Questionnaire_GEOS-CHEM.xlsx|}} +
-GOCART (Mian Chin, Mariya Petrenko): {{:aerocom:Aerocom_BB_models_Questionnaire_GOCART.xlsx|}} +
-HadGEM3 (Ben Johnson): {{:aerocom:Aerocom_BB_models_Questionnaire_Johnson_HadGEM3-2.xlsx|}} +
-OsloCTM2 (Ragnhild Bieltvedt Skeie, Gunnar Myhre) {{:aerocom:Aerocom_BB_models_Questionnaire_1_OsloCTM2_final.xlsx|}} +
-SPRINTARS (Toshihiko Takemura): {{:aerocom:Aerocom_BB_models_Questionnaire_1_SPRINTARS.xlsx|}} {{:aerocom:SPRINTARS_References_forAeroComQuestionnaie.docx|}} +
-GISS ModelE (Keren Mezuman, Susanne Bauer, Kostas Tsigaridis): {{:aerocom:Aerocom_BB_models_Questionnaire_GISSModelE.xlsx|}} +
  
  
-===== HTAP 2 experiments =====+===== Anthropogenic Dust experiment =====
  
-A short description (about a paragraph) should go here. A detailed description can be found here: {{:aerocom:aerocom_htap2.pdf|File}}+Experiments for dust models are proposed to estimate the contribution of land use to dust emission, deposition, and optical properties. In addition a sensitivity study related to the threshold of wind erosion is proposed. Multi-models comparison with observations will provide an envelope of uncertainties.. A detailed description can be found here: {{:aerocom:Anthro_dust_AeroComIII.pdf |Specifications}}
  
-Contact: Mian Chin (NASA) mian.chin@nasa.gov; Michael Schulz (MetNo) michael.schulz@met.no+Contact: Paul Ginoux (GFDL) paul.ginoux@noaa.gov
  
-Status: TBD +Status: Actual participants (Jan 2019): CAM5 (U. Wyoming), GEOS-Chem (U. l'Aquilla), INCA (IPSL/LSCE), AM4 (NOAA-GFDL)
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +Submission deadline: June 2019
-Document(s) with more info: +
-HTAP2 experiment description [[http://iek8wikis.iek.fz-juelich.de/HTAPWiki/WP2.2|HTAP website]]+
  
 +Timeline:  Analysis: completion for Aerocom 2019; Paper: 1st draft for Aerocom 2019; Manuscript submission by December 2019
  
-===== Anthropogenic Dust experiment =====+Column with diagnostic requests in excel sheet: Aerocom Phase III Control (AP3-CTRL)
  
-A short description (about a paragraph) should go here. A detailed description can be found here: {{:aerocom:anthro_dust_experiment.pdf|Specifications}}+Document(s) with more info: {{ :aerocom:Anthro_dust_AeroComIII.pdf |}}
  
-Contact: Paul Ginoux (GFDL) paul.ginoux@noaa.gov 
- 
-Status: TBD 
-Submission deadline: TBD 
-Timeline: TBD 
- 
-Column with diagnostic requests in excel sheet: TBD. 
-Document(s) with more info: TBD 
 Dust source: [[http://aerocom.met.no/download/Anthropogenic_Dust_Experiment/|NetCDF files]] Dust source: [[http://aerocom.met.no/download/Anthropogenic_Dust_Experiment/|NetCDF files]]
  
 "EXPERIMENT NAMES": "EXPERIMENT NAMES":
 +
 +The Anthro-dust experiment consists to run one control experiment (CTRL2016) with standard configuration for 3 years from 2010 to 2012, and perturbed cases with satellite based inventory (MDB2-A; MDB2-Ba…MDB2-Bd; MDB2-C), which differentiates between natural and land use dust sources. 
 +To better constrain the threshold of wind erosion (Ut0) a sensitivity study is performed with Ut0 multiplied by 1 (MDB2-Ba), 0.5 (MDB2-Bb),1.5 (MDB2-Bc) and 1.25 (MDB2-Bd) for land use sources (foo_ant; the natural source is shutdown). Then both, natural and anthropogenic dust sources are activate using everywhere Ut0. But before performing the perturbed case, it is necessary to perform a simulation (MDB2-A) with provided natural sources (foo_nat). This experiment is used to determine the global constant of emission(C) such that the global annual dust emissions from the control (C0) and new inventory (Cnew) have the same value. The last experiment MDB2-C uses both sources (foo), Cnew and Ut0.
 +
 +Simulation period: 3 years from 2010 to 2012
  
 "CTRL2016" 1. Simulate with your own sources using your own C0 and Uto. "CTRL2016" 1. Simulate with your own sources using your own C0 and Uto.
Line 156: Line 189:
 “MDB2-Bb" b) 0.5*Uto  “MDB2-Bb" b) 0.5*Uto 
 “MDB2-Bc" c) 1.5*Uto “MDB2-Bc" c) 1.5*Uto
 +"MDB2-Bd"       d) 1.25*Ut0
  
 “MDB2-C” 4.  Simulate with MDB2 natural and anthropogenic sources with Cnew and Uto  “MDB2-C” 4.  Simulate with MDB2 natural and anthropogenic sources with Cnew and Uto 
  
 +===== Dust Source Attribution Experiment (DUSA) =====
  
-===== UTLS aerosol experiments =====+This experiment will investigate the impact of dust from the prominent dust source regions, and the source-receptor relationships over land and remote ocean regions. In addition to the previous AeroCom experiments which focus on the regions where dust amount is significant, this proposed study will also analyze the source-receptor relationships over more extended regions including Arctic, Antarctic, Tibetan Plateau, and oceanic areas. In addition, this multi-model experiment also tackles two areas that have not been examined before in AeroCom: the change of dust particle sizes during the long-range transport, and the dust optical depth at the thermal infrared (10 um) wavelength that is mostly sensitive to dust aerosols, which can be compare to the commonly used value at the mid-visible wavelength. Details about the proposed experiment are described here {{ :aerocom:AeroCom_DUSA_proposal_20191204.pdf |}}. The model output variables are listed here {{:aerocom:AEROCOM3_DUSA_diagnostics_20191202.xlsx|}}, and the file of tagged region domains is provided in the netcdf file (0.5 deg) here [[https://croc.gsfc.nasa.gov/gocart/products/xchange/aerocom/aerocom3/files/|dusrc_tagmap.x720_y360.nc]].
  
-A short description (about a paragraph) should go here. A detailed description can be found here: {{:aerocom:A3_UTLS_analysis.pdf|File}}+Contact: Dongchul Kim (NASA GSFC) [[dongchul.kim@nasa.gov]]
  
 +Status: TBD
  
-Contact: Mian Chin (NASA) mian.chin@nasa.gov+Submission deadline: 30 June 2020 
 + 
 + 
 + 
 + 
 +===== Trans-Atlantic Dust Deposition (TADD) analysis ===== 
 + 
 +Airborne deposition of mineral dust and associated nutrients could fertilize ocean ecosystems and influence ocean biogeochemical cycles and climate. Model simulations of dust deposition depend strongly on the highly parameterized representations of a suite of dust processes with little constraints. In recent years, several intensive field campaigns have acquired new datasets of microphysical and optical properties of African dust. Satellite remote sensing observations have been applied to characterize the three-dimensional distributions of dust and estimate the dust deposition and loss frequency along the trans-Atlantic transit on a decadal time scale. It is imperative to integrate these new in situ and remote sensing datasets with long-term data from ground-based networks in the region to systematically assess model simulations of dust deposition and identify major deficiencies of dust models. Details about the proposed analysis are described here: {{ :aerocom:TADD_aerocom_exp_final.pdf |}} 
 + 
 +Contact: Hongbin Yu (NASA GSFC) [[Hongbin.Yu@nasa.gov]]
  
 Status: TBD Status: TBD
-Submission deadline: TBD+ 
 +Submission deadline: 12-31-2019 
 Timeline: TBD Timeline: TBD
  
-Column with diagnostic requests in excel sheet: TBD.+Column with diagnostic requests in Google Doc excel sheet: [[https://docs.google.com/spreadsheets/d/1EaZO6_FEH6nDhWKE9PvUNpfVkU9RdR2ZT6ahLL2VVEo/edit?ts=5be0af24#gid=1256817062|AeroCom diagnostics CTRL + X 2018/2019]], see column "TADD" 
 Document(s) with more info: TBD Document(s) with more info: TBD
  
  
 +===== UTLS aerosol experiments =====
 +
 +The upper troposphere/lower stratosphere (UTLS) is a crucial region for Earth's climate, where changes of aerosol loading and composition can have a direct impact on the amount of radiation absorbed and emitted. The proposed UTLS model experiments has the following objectives: (1) Compare and evaluate the model simulated aerosol and precursors in the UTLS regions in recent decades, (2) examine the pathways of aerosols in the UTLS region (e.g., roles of convective transport, chemistry, and direct injection), (3) Assess the contributions of anthropogenic and volcanic emissions to the decadal variations of UTLS aerosols. It will be coordinated with and benefited from other community projects, such as the IGAC/SPARC Atmospheric Composition and Asian Monsoon (ACAM), and the SPARC Stratospheric Sulfur and its Role in Climate (SSiRC). These objectives will be achieved by designed model experiments described here: {{:aerocom:A3_UTLS_2019-11-26.pdf |}}
 +
 +Contact: Mian Chin (NASA GSFC) [[mian.chin@nasa.gov]]
 +
 +Status: Taking submissions to AeroCom server.
 +
 +Submission deadline: 31-05-2020
 +
 +Column with diagnostic requests in Google Doc excel sheet: [[https://docs.google.com/spreadsheets/d/1EaZO6_FEH6nDhWKE9PvUNpfVkU9RdR2ZT6ahLL2VVEo/edit?ts=5be0af24#gid=1256817062|AeroCom diagnostics CTRL + X 2018/2019]], see column "UTLS"
 +
 +Document(s) with more info: TBD
 +
 +
 +===== Atmospheric Composition and Asian Monsoon (ACAM) analysis =====
 +
 +Motivation: The Asian monsoon system is a major component in Earth’s climate. Given rapid population and economic growth across the Asian monsoon region, serious concern has emerged that coupling between the monsoon system and surface emissions is having increasingly significant effects not only on regional air quality but also on global atmospheric composition. This proposed activity represents a coordinated modeling and analysis effort among the AeroCom, CCMI, and ACAM communities to study interactions between Asian air pollution and the monsoon system.  In Part 1 of ACAM as stated in this docoment, we will only focus on aerosols simulated by global models. In Part 2, we may focus on trace gases by global models, and in Part 3 aerosols and trace gases by regional models. 
 +
 +Objectives: (1) Compare and evaluate model-simulated aerosol and related species in the Asian monsoon region with observations from remote sensing and recent ground-based and aircraft measurements; (2) Identify and examine pathways of trace gases and aerosols in the UTLS above the Asian monsoon with respect to the monsoon anticyclone, large-scale transport, and atmospheric chemistry; (3) Investigate interactions between Asian pollution and monsoon meteorology
 +
 +
 +A more detailed description can be find here {{:aerocom:ACAM_experiment_description_V10.pdf|}}.  
 +
 +Contact: Xiaohua Pan [[xiaohua.pan@nasa.gov]], Jonathon Wright [[jswright@tsinghua.edu.cn]], Mian Chin [[mian.chin@nasa.gov]]
 +
 +Last update: May 13, 2020 (Make sure to check the latest experiment description above)
 +
 +Status: accepting model submissions
 +
 +Submission deadline: July 31, 2020
 ===== Aerosol-Cloud-Radiation Interaction (ACRI) experiments ===== ===== Aerosol-Cloud-Radiation Interaction (ACRI) experiments =====
  
-A short description (about a paragraph) should go here. A detailed description can be found here: {{:aerocom:AeroCom_ACRI_corrected.pdf|File}}+Our previous study has shown that cloud plays much more important roles on the surface dimming/brightening trends. Aerosol direct radiative effects is only obvious under clear sky conditions. Big questions need to be addressed: (1) What causes the cloud trend? (2) How much is the change of cloud mediated by aerosols through aerosol-cloud-radiation interaction? (3) How does climate change affect the cloud and aerosol trends and their interactions? This proposed ACRI study is to answer the above questions through a set of GCM model experiments described here: {{:aerocom:A3_ACRI_2019-01-21.pdf|}}
  
-Contact: Mian Chin (NASA) mian.chin@nasa.gov+Contact: Mian Chin (NASA GSFC) [[mian.chin@nasa.gov]]
  
 Status: TBD Status: TBD
-Submission deadline: TBD+ 
 +Submission deadline: 12-31-2019 
 Timeline: TBD Timeline: TBD
  
-Column with diagnostic requests in excel sheet: TBD.+Column with diagnostic requests in Googld Doc excel sheet: [[https://docs.google.com/spreadsheets/d/1EaZO6_FEH6nDhWKE9PvUNpfVkU9RdR2ZT6ahLL2VVEo/edit?ts=5be0af24#gid=1256817062|AeroCom diagnostics CTRL + X 2018/2019]], see column "ACRI" 
 Document(s) with more info: TBD Document(s) with more info: TBD
  
  
-===== Aircraft experiment =====+===== Baseline Aircraft experiment =====
  
 Building on the Phase II experiments this effort will support the interpolation of consolidated flight track points from high-temporal resolution model output to minimise the large sampling biases that would otherwise be present. Building on the Phase II experiments this effort will support the interpolation of consolidated flight track points from high-temporal resolution model output to minimise the large sampling biases that would otherwise be present.
 +
 +//**Note**, we are now only requesting a single year of simulation for the mandatory Tier 1 submissions. Tier 2 submissions are also welcome.//
  
 Recent dedicated aircraft measurement campaigns and data collection efforts have delivered a large amount of in-situ aerosol measurements of great value to AeroCom modellers. The Global Aerosol Synthesis and Science Project (GASSP) dataset brings 1000s of separate aircraft measurement flights across 10s of campaigns into a single consistent database. Combining this with data from recent campaigns such as CLARIFY, ORACLES, AToM and ACE-ENA provides a unique opportunity to evaluate AeroCom model aerosol distributions across a wide range of regions and meteorological conditions.  Recent dedicated aircraft measurement campaigns and data collection efforts have delivered a large amount of in-situ aerosol measurements of great value to AeroCom modellers. The Global Aerosol Synthesis and Science Project (GASSP) dataset brings 1000s of separate aircraft measurement flights across 10s of campaigns into a single consistent database. Combining this with data from recent campaigns such as CLARIFY, ORACLES, AToM and ACE-ENA provides a unique opportunity to evaluate AeroCom model aerosol distributions across a wide range of regions and meteorological conditions. 
  
-Each campaign includes different measurements of aerosol properties such as size distributions and speciation, and each focuses on different regions or phenomena; however, they all provide valuable model constraints and all require similar sampling considerations. +Each campaign includes different measurements of aerosol properties such as size distributions and speciation, and each focuses on different regions or phenomena; however, they all provide valuable model constraints and all require similar sampling considerations. Some campaign or region focussed analyses build on the baseline experiment with their own sensitivity experiments or specialist diagnostics, such as the [[aerocom:phase3-experiments#atom_experiment| ATom experiment]]. Please refer to each extension analysis for further details.
  
-Contact: Duncan Watson-Parris (Oxford) [[duncan.watson-parris@physics.ox.ac.uk|duncan.watson-parris@physics.ox.ac.uk]]; Christina Williamson (NOAA) [[christina.williamson@noaa.gov|christina.williamson@noaa.gov]]+For this experiment the flight track points will be provided in a single CF-conformant NetCDF format with time, latitude, longitude, altitude and pressure coordinates. A post-processing script can also be provided allowing interpolation from high-temporal resolution output (at least 3 hourly) using the [[https://cistools.net|CIS]] tool to output in the same CF-compliant NetCDF format as the sample data, and then deletion of the full output fields. Vertical interpolation will automatically be performed by height or pressure as required. Some models have implemented a ‘flight-track simulator’ to allow on-line interpolation of these spatially sparse measurement points, thus avoiding significant output storage requirements.
  
-Status: TBD +The CIS commands required are very simple and the syntax is described in the documentation [[https://cis.readthedocs.io/en/stable/collocation.html|documentation]]. An example command to extract the tracers from a set of model outputs for March 2009 would be: 
-Submission deadline: TBD +  cis col <tracer_vars>:model_file_2009_03_??.nc all_points_200903??.nc -o tracers_200903.nc 
-Timeline: TBD+   
 +A python interface is also available if preferred. 
 + 
 +Contact: Duncan Watson-Parris (Oxford) [[duncan.watson-parris@physics.ox.ac.uk|duncan.watson-parris@physics.ox.ac.uk]], Philip Stier (Oxford) [[philip.stier@physics.ox.ac.uk|philip.stier@physics.ox.ac.uk]] 
 + 
 +Status: Submission phase 
 + 
 +Submission deadline: Summer 2020 
 + 
 +Timeline: First publications ready Autumn 2020 
 + 
 +Column with diagnostic requests in excel sheet: Aircraft
  
-Column with diagnostic requests in excel sheet: TBD. 
 Document(s) with more info: Document(s) with more info:
-**Experiment description:** {{ :aerocom:AeroCom_aircraft_experiment_v1.4.docx |}} + 
-**Requested diagnostics:** See Phase III CTRL-X diagnostics ('atFlightTrack' sheet and 'aerMonthly-3d' sheet)+**Experiment description:** {{ :aerocom:AeroCom_aircraft_experiment_v1.7.docx |}} 
 + 
 +**Requested diagnostics:** See Phase III CTRL-X diagnostics ('atFlightTrack' sheet) 
 + 
 +**Flight-track points:** {{ :aerocom:AeroCom_combined_v.1.1.zip | All hindcast points (v1.1) }} {{ :aerocom:AeroCom_combined_1850_v1.1.zip | All points fixed to 1850 (v1.1) }} {{ :aerocom:AeroCom_combined_2008_v1.1.zip | All points fixed to 2008 (v1.1)}} 
 **Ongoing analyses:** [[https://docs.google.com/document/d/14djoOBiJJsePZ5IwZW_26nyU9y8GU6kPzDrK-wwwCmc/edit?usp=sharing|Google Doc]] **Ongoing analyses:** [[https://docs.google.com/document/d/14djoOBiJJsePZ5IwZW_26nyU9y8GU6kPzDrK-wwwCmc/edit?usp=sharing|Google Doc]]
 +===== ATom experiment =====
  
 +NASA EVS Atmospheric Tomography Mission (ATom) provided unprecedented and rich measurements for aerosols, clouds, precursor gases, and meteorological fields over global oceans. In this study, we aim to address the AeroCom multi-model simulations of aerosols, new particle formation, and clouds constrained by ATom measurements, as well as measurements from various satellites and ground platforms. The study will cover remote regions over the Pacific, Atlantic, and Southern Oceans from near surface to ~12 km altitude and covers four seasons. We will reveal any new scientific findings and discuss current potential problems in AeroCom model simulations constrained by ATom measurements from process levels. 
  
-===== Volcanic ACI experiment =====+Contact: Huisheng Bian (NASA) [[huisheng.bian@nasa.gov|huisheng.bian@nasa.gov]]; Christina Williamson (NOAA) [[christina.williamson@noaa.gov|christina.williamson@noaa.gov]]; Mian Chin (NASA) [[mian.chin@nasa.gov|mian.chin@nasa.gov]]
  
-A short description (about a paragraph) should go here.+Submission deadline: July 31, 2019
  
-Contact: Florent Malavelle, Tianle Yuan+Status: accepting model submissions. Last update: Mar. 6, 2019.
  
-Status: TBD +Document(s) with more info:
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +**Experiment description:** {{ :aerocom:ATom_AeroCom_plan_v3.docx |}}
-Document(s) with more info: TBD+
  
 +**ATom 1-4 flighttracks:** {{ :aerocom:ATom1-4-flighttracks.nc.tar |}} 
  
-===== Aerosol GCM Trajectory Experiment =====+**Diagnostic requests:** See Phase III CTRL-X diagnostics (sheets of 'aermonthly-2d', 'aermonthly-3d', and 'atFlightTrack') 
  
-A short description (about a paragraph) should go here.+ 
  
-Contact: Daniel Partridge 
  
-Status: TBD +===== Volcanic ACI experiment (VolcACI) =====
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +**Abstract**: Understanding of how changes in aerosol particles affect clouds remains one of the most challenging and persistent problems in atmospheric science. Aerosol-Cloud Interactions (ACI) are hard to constrain as it operates at scales much smaller than the scales resolved by Earth System Models (ESMs). To rub salt into the wound, lack of suitable observations at globally relevant spatial scales with which to challenge the models hampers our capacity of validating ESM estimates of ACI impacts. Degassing volcanos emitting large amount of sulphur dioxide forming large-scale aerosol plumes create ideal experimental conditions for constraining models (Malavelle et al., 2017, Nature, M17; Yuan et al., 2011, ACP, Y11). Aerosol plumes from degassing volcanos at Holuhraun in Iceland and Kilauea in Hawaii cover huge areas in North Atlantic and Tropical Pacific, respectively. Volcanic aerosols at these two locations affected low clouds in different environments and provide set-ups for investigating ACI for cold maritime stratiform and tropical trade cumulus clouds, respectively. 
-Document(s) with more info: TBD+   
 +This experiment proposes to extend the protocol described in M17 to investigate ACI involving a larger group of ESMs. The experiment requests standard model outputs and should require no further model development. Diagnostic are organised in three packages, with the first mandatory package designed for characterising the big picture ACI (Monthly mean 3D and 2D fields). The two other packages are optional and piggy back on the [[https://wiki.met.no/aerocom/indirect|AeroCom Indirect experiment]] to derive ACI metrics and cloud microphysics processes tendencies for warm clouds (3 hourly, mostly 2D fields). Analysis of the Holuhraun simulations will be coordinated by the University of Exeter (F. Malavelle). Analysis of the Kilauea simulations will be coordinated by NASA (T. Yuan). 
  
 +Observations from different satellite sensors such as MODIS, CloudSat PR, CALIOP and CERES will be made available for model comparison at the big picture ACI level.
  
-===== Multi-model PPE =====+**Contact**: Florent Malavelle [[F.Malavelle@exeter.ac.uk|F.Malavelle@exeter.ac.uk]] (Holuhraun), Tianle Yuan [[tianle.yuan@nasa.gov|tianle.yuan@nasa.gov]] (Kilauea)
  
-A short description (about a paragraph) should go here.+**Status**: Ongoing
  
-Contact: Lindsay Lee +**Submission deadline**: accepting model submissions. Last update: May. 21, 2019.
-Status: TBD +
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +**Timeline**: For Holuhraun: Model submissions started. Early analysis and presentation of results expected by Oct 2019. For Kilauea: Limited submission so far (4 groups have run the experiment with different emissions, we will coordinate and present early analyses at the Oct 2019 AEROCOM meeting.
-Document(s) with more info: TBD+
  
 +**Column with diagnostic requests in excel sheet**: Column 'VolcACI' in aermonthy-2D, aermonthy-3D, aerfixed, aer6hr, aer3hr-2d and aer3hr-3D sheets. [[https://drive.google.com/open?id=1p0A0w6BbG-5dvg5-YrEE2mQ_eNZ5ASKF|External link]] to the former diagnostics list for this experiment . Details for Kilauea updated. 
  
-===== TOA fluxes using CERES =====+**Document(s) with more info**: [[https://drive.google.com/file/d/1e_GDV_TrP9FqMS1L0Zqddl7MRbl1SLp1/view?usp=sharing|.docx]][[https://drive.google.com/file/d/1aRQDQz80uaVg5N4-yVke50OsYhfdlS9W/view?usp=sharing|.pdf]]. 
  
-A short description (about a paragraph) should go here.+===== Aerosol GCM Trajectory Experiment (GCMTraj) =====
  
-Contact: W. Su+This experiment aims to perform a multi-model evaluation against reanalysis meteorological fields combined with ground-based observations of aerosol properties in a trajectory-based Lagrangian framework.  The representation of source and transport dependence of aerosols to different regions will be examined. Applying trajectory calculations to the meteorological fields from reanalysis and GCM data for the same location and time-period facilitates a highly transparent means for evaluating the discrepancies between models and observations as a function of aerosol source/sink pathways during transport to a measurement station. This analysis technique will have wide scientific relevance as it facilitates tracing the aerosol evolution during transport to investigate the role of sources, dynamical processes and sinks on the aerosol properties in the model. For further details, see experiment documentation linked below.
  
-Status: TBD +**Ongoing analysis**: A report summarising the results from the development phase of the experiment can be found [[https://drive.google.com/file/d/1Z9dKW4yCsAKtIlp--X2o6N7WzrGvfMji/view?usp=sharing|here]].
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +**Contact**: Daniel Partridge ([[D.G.Partridge@exeter.ac.uk]]), Paul Kim ([[p.s.kim@exeter.ac.uk]])
-Document(s) with more info: TBD+
  
 +**Status**: ongoing.
  
-===== ATom experiment =====+**Submission deadline**: accepting model submissions.
  
-A short description (about a paragraph) should go here.+**Timeline**: obtain results for initial (phase 1) submissions by May 2019. Presentation of results at Oct 2019 AeroCom meeting.
  
-Contact: Huisheng Bian+**Column with diagnostic requests in excel sheet**: TRAJ
  
-Status: TBD +**Experiment description**: The experiment rationale and description can be found [[https://drive.google.com/file/d/1w26206Ed9KWvkK72NYKK1xjFlkT0mFAJ/view?usp=sharing|here]].
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +**Document(s) with more info**: All relevant documentation (including the files linked above) can be found [[https://drive.google.com/drive/folders/1In35b3Z5iEignZAk3Ad2INAx2JKU3dA3?usp=sharing|here]].
-Document(s) with more info: TBD+
  
 +Last update: Jul. 20th, 2020
  
-===== Aerosol absorption experiment ===== 
  
-A short description (about a paragraph) should go here.+===== Multi-model PPE – Cloud experiment =====
  
-Contact: Bjorn Samset+The goal is to understand what factors affect the magnitude of the aerosol-cloud interactions in several different model systems. The indirect radiative effect of aerosols on clouds (ACI, or ERF_ACI according to the IPCC) is the largest uncertainty in climate forcing over the historical record. Sophisticated earth system models typically treat aerosols cloud interactions as a series of processes starting with aerosols and total Cloud Condensation Nuclei (CCN), to activation of aerosols as cloud droplets (Activation) to the loss process for cloud water, often through precipitation (Autoconversion). This experiment will test several different processes to see how ACI are sensitive to the process representations, and in what combination. 
  
-Status: TBD +Each participating model will run a 3-parameter perturbed parameter experiment (PPE). This will consist of 39 pre-defined simulations that will be run for the years 2008 and 1850 + any required spin-up time. The 2008 simulations will be the priority but 1850 simulations are required to calculate the radiative forcing. This is a total of 78 years of simulation + spin-up. The pre-defined simulations will allow statistical modelling to be carried out for defined diagnostics producing sensitivity analyses that will be used to compare individual models following Lee, et al. 2011 and Carslaw et al. 2013. Participants are also requested to submit the results of the one-at-a-time high/low tests used to test the implementation of the perturbation for initial comparisons. 
-Submission deadline: TBD +
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +Contact: Lindsay Lee L.A.Lee@leeds.ac.uk
-Document(s) with more info: TBD+
  
 +Status: Sign-up open and one-at-a-time test results being accepted.  PPE simulation results accepted from September 2019.   
  
-===== Historical experiment =====+Submission deadline: For inclusion in AeroCom 2019, one-at-a-time results should be received in August 2019.  For inclusion in AeroCom 2020 monthly diagnostics should be submitted by July 2020. 
  
-A short description (about a paragraph) should go here.+Timeline: We hope to present some high/low comparisons from multiple models at AeroCom 2019.  First results from the multi-model PPE will be presented at AeroCom 2020.     
  
-Contact: Gunnar Myhre+Column with diagnostic requests in excel sheet: TBD
  
-Status: TBD +Document(s) with more info: {{ :aerocom:AeroComMMPPE_cloudexperimentprotocolV1.pdf |Cloud experiment protocol}} 
-Submission deadline: TBD +===== Multi-model PPE – BC experiment =====
-Timeline: TBD+
  
-Column with diagnostic requests in excel sheet: TBD. +Direct radiative forcing due to anthropogenic black carbon (BC) is highly uncertain but best estimates suggest a large positive effect (+0.71 [+0.08, +1.27] W m-2).  The uncertainty in the total forcing is due to large uncertainties in the atmospheric burden of BC and its radiative properties. The uncertainty in the burden is in-turn due to the uncertainty in emissions (7500 [2000, 29000] Gg yr-1) and lifetime (removal rates). In comparison with the available observations GCMs tend to under-predict absorption near source (e.g. at Aeronet stations), and over-predict concentrations in remote regions (e.g. as measured by HIPPO). By exploring the uncertainties in the dominant emission and removal processes, and in the key radiative property (the imaginary part of the refractive index) and comparing with a variety of observations we hope to better constrain the radiative forcing.
-Document(s) with more info: TBD+
  
 +We aim to address the uncertainty in direct radiative forcing in a unique way by developing a new approach to tackle two dominant sources of model uncertainty: structural uncertainty and parametric uncertainty.  We will do this via a multi-model perturbed parameter ensemble (MMPPE).
  
-===== Biomass burning injection height experiment =====+Each participating model will run a 3-parameter perturbed parameter ensemble (PPE).  This will consist of 39 pre-defined simulations that will be run for the years 2008 and 1850 + any required spin-up time.  The 2008 simulations will be the priority but 1850 simulations are required to calculate the radiative forcing.  This is a total of 78 years of simulation + spin-up.  The pre-defined simulations will allow statistical modelling to be carried out for defined diagnostics producing sensitivity analyses that will be used to compare individual models following Lee, et al. 2011 and Carslaw et al. 2013.  Participants are also requested to submit the results of the one-at-a-time high/low tests used to test the implementation of the perturbation for initial comparisons. 
  
-A short description (about a paragraph) should go here. 
  
-Contact: Ralph Kahn+Contact: Lindsay Lee L.A.Lee@leeds.ac.uk 
 + 
 +Status: Sign-up open and one-at-a-time test results being accepted.  PPE simulation results accepted from September 2019.       
 + 
 +Submission deadline: For inclusion in AeroCom 2019, one-at-a-time results should be received in August 2019.  For inclusion in AeroCom 2020 monthly diagnostics should be submitted by July 2020.  
 + 
 +Timeline: We hope to present some high/low comparisons from multiple models at AeroCom 2019.  First results from the multi-model PPE will be presented at AeroCom 2020.      
 + 
 +Column with diagnostic requests in excel sheet: TBD 
 + 
 +Document(s) with more info: {{ :aerocom:AeroComMMPPE_BCexperimentprotocolV0.2.pdf |BC experiment protocol}} 
 + 
 +[[http://example.com|External Link]] 
 +===== Biomass burning emission injection height experiment (BBEIH) ===== 
 +Smoke aerosols can adversely affect surface air quality and visibility near emission sources and even hundreds to thousands of km downwind, and thus create health and aviation hazards. They also have impacts on air temperature, cloud properties and precipitation. The atmospheric composition of smoke aerosols depends not only on the emitted mass, but also on the injection height. This is especially true for large boreal forest fires that often emit smoke above planetary boundary layer (PBL) into the free troposphere and even the lower stratosphere. However, most atmospheric chemistry transport models (CTMs) assume that fire emissions are dispersed only within PBL, or use simple plume-rise parameterizations.The objectives of this project is to test the sensitivity of various model results to biomass burning smoke injection height, where the biomass burning injection height is based on MISR (Val Martin et al., 2010; 2018), as compared to the nominal model value.This proposed BBEIH study is to answer this question through a set of GCM model experiments. Please read the details in the document: {{:aerocom:AeroCom Phase_III_plume_injection_height_v16.pdf}} 
 + 
 +**Phase III Organizers**: Xiaohua Pan, Ralph Kahn, Mian Chin, Maria Val Martin 
 + 
 +**Contact:**  Xiaohua Pan [[xiaohua.pan@nasa.gov]], Ralph Kahn [[ralph.kahn@nasa.gov]] 
 + 
 +**Last update:** May. 13, 2020  
 + 
 +**Status:** accepting model submissions  
 + 
 +**Submission deadline:** June 30, 2020 
 + 
 +Column with diagnostic requests in Googld Doc excel sheet: [[https://docs.google.com/spreadsheets/d/1EaZO6_FEH6nDhWKE9PvUNpfVkU9RdR2ZT6ahLL2VVEo/edit?ts=5be0af24#gid=1256817062|AeroCom diagnostics CTRL + X 2018/2019]], see column "BBEIH" 
 + 
 + 
 + 
 + 
 +===== In-situ Particle Number Size Distribution (PNSD) Measurement Comparison ===== 
 + 
 +A short description (about a paragraph) should go here. A detailed description can be found here: {{:aerocom:AeroComPIII_INSITU_PNSD_description_v1.pdf|}} 
 + 
 +Contact: Markus Fiebig (NILU), Markus.Fiebig@nilu.no; Stephen Platt (NILU), StephenMatthew.Platt@nilu.no
  
 Status: TBD Status: TBD
 +
 Submission deadline: TBD Submission deadline: TBD
 +
 Timeline: TBD Timeline: TBD
  
-Column with diagnostic requests in excel sheet: TBD. +Column with diagnostic requests in excel sheet: TBD 
-Document(s) with more info: TBD+ 
 +Document(s) with more info:  
 + 
 +List of stations with in-situ measurements to be used in comparison project {{:aerocom:20160310_INSITU_PNSD_station_list.xlsx|}} 
 + 
 +Tools to extract station data at station locations from model fields, output into station netcdf file: 
 +ncl: [[https://github.com/kaizhangpnl/sample_insitu]] kindly provided by Kai Zhang   
  
  
Line 463: Line 593:
  
  
 +===== Biomass Burning emissions experiments (2014-2019) =====
 +
 +BB experiment aims to compare the performance of the global models in simulating transport and optical properties of biomass burning emissions. We provide a set of about 400 fire&smoke cases observed by MODIS instrument (mostly on Terra satellite) in 2008, and compare model-simulated AOD to those observed by MODIS, as well as intercompare model properties. Given that all models are using the same BB emission input (GFEDv3 inventory) any differences in the output will indicate the differences between model configuration. Patterns in the model-model and model-satellite differences reveal nuances in either emission inventory or model setup that produce these differences. We expect to have some constructive feedback for both inventory developers and model groups regarding modeling the BB emissions. A detailed description can be found here (updated November 26, 2014): {{:aerocom:aerocom_bbexperiment_proposed_v3.2.pdf |File}}
 +
 +**Contact:** Mariya Petrenko (NASA GSFC/University of Maryland, USA), mariya.m.petrenko@nasa.gov, Ralph Kahn (NASA) Ralph.kahn@nasa.gov, Mian Chin (NASA) mian.chin@nasa.gov 
 +
 +**Status:** Model experiment finished, manuscript is in progress (Petrenko et al.)
 +
 +**Model Descriptions** (Questionnaires filled by the groups in 2015):
 +CAM5 (Kai Zhang, Hailong Wang, Xiaohong Liu): {{:aerocom:CAM5_Liu.xlsx|}} {{:aerocom:CAM5_References_forAeroComQuestionnaie_Liu.docx|}}
 +CIFS (Johannes Kaiser, Samuel Remy): {{:aerocom:Aerocom_BB_models_Questionnaire_CIFS.xlsx|}} {{:aerocom:CIFS_Figures_forQuestionnaire.pdf|}} {{:aerocom:CIFS_References_forAeroComQuestionnaire.docx|}}
 +ECHAM6-SALSA (Tero Mielonen, Tommi Bergman):{{:aerocom:Aerocom_BB_models_Questionnaire_ECHAM6-SALSA.xlsx|}}
 +GEOS-CHEM (Gabriele Curci, Anna Protonotariou): {{:aerocom:Aerocom_BB_models_Questionnaire_GEOS-CHEM.xlsx|}}
 +GOCART (Mian Chin, Mariya Petrenko): {{:aerocom:Aerocom_BB_models_Questionnaire_GOCART.xlsx|}}
 +HadGEM3 (Ben Johnson): {{:aerocom:Aerocom_BB_models_Questionnaire_Johnson_HadGEM3-2.xlsx|}}
 +OsloCTM2 (Ragnhild Bieltvedt Skeie, Gunnar Myhre) {{:aerocom:Aerocom_BB_models_Questionnaire_1_OsloCTM2_final.xlsx|}}
 +SPRINTARS (Toshihiko Takemura): {{:aerocom:Aerocom_BB_models_Questionnaire_1_SPRINTARS.xlsx|}} {{:aerocom:SPRINTARS_References_forAeroComQuestionnaie.docx|}}
 +GISS ModelE (Keren Mezuman, Susanne Bauer, Kostas Tsigaridis): {{:aerocom:Aerocom_BB_models_Questionnaire_GISSModelE.xlsx|}}
 +===== HTAP 2 experiments =====
 +
 +The Unite Nations’ Task Force on Hemispheric Transport of Air Pollution (TF HTAP) is an international scientific cooperative effort to improve the understanding of the intercontinental transport of air pollution across the Northern Hemisphere. TF HTAP was organized in 2005 under the auspices of the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP Convention). The model experiments for HTAP phase 2 have the following objectives: (1) Examine the transport of aerosols, including anthropogenic, dust, and biomass burning, from source regions to downwind regions, (2) assess the emission and transport impacts on regional and global air quality, ecosystems, public health, and climate, and (3) provide information on potential emission mitigation options
 + A detailed description can be found here: {{:aerocom:aerocom_htap2.pdf|File}}
 +
 +Contact: Mian Chin (NASA) mian.chin@nasa.gov; Michael Schulz (MetNo) michael.schulz@met.no
 +
 +Status: Model experiments finished, manuscript will be started soon (Chin et al.)
 +
 +HTAP2 experiment description [[http://iek8wikis.iek.fz-juelich.de/HTAPWiki/WP2.2|HTAP website]]
  • aerocom/phase3-experiments.1546625119.txt.gz
  • Last modified: 2022-05-31 09:23:11
  • (external edit)