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aerocom:phase3-experiments

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AeroCom phase III experiments

The AeroCom phase III experiments were initiated in March 2015 to expand earlier work.

Details of experiment design, priorities, requested output, and timeline are described in the linked documents below and also in the priority tables.

Files from AeroCom phase III experiments should be found on the aerocom-users server under

/metno/aerocom/users/aerocom1/AEROCOM-PHASE-III/{model}

For submissions of data to any experiment described below, please follow the instructions given here

An excel file with all diagnostics requests can be found here (link to be added soon). }

Harmonized emission datasets

The currently proposed and on-going AeroCom Phase III model experiments require to use the same emission datasets for all simulations:

  • Volcanic emission is based on the TOMS- and OMI-based estimates, 1979-2018 (to be completed).

Unified transport and wet/dry removal tracers

To diagnose the characteristics and model differences of transport and removal processes, it is important to implement common tracer of transport and dry/wet removal across all models.

  • Transport tracer: CO with 50-day lifetime with prescribed direct anthropogenic and biomass burning emissions, oxidation from anthropogenic NMVOC (aVOC) and biogenic NMVOC (bVOC), and oxidation from CH4. Description from here transport_tracer.docx.
  • Removal tracer: Pb-210, which is formed from Rn-222 decay (5.5-day lifetime). Its dry/wet removal process should be treated the same as sulfate. Rn-222 land emissions can be obtained (to be listed), and the description of model implementation can be found here removal_tracer.docx.

AeroCom Control EXPERIMENT 2019

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 michael.schulz@met.no

Status: Diagnostics and new instructions (new filenames) are assembled in new tables, see below (Jan 2019).

Submission deadline: 15 June 2019

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

Document(s) with more info: Kept in Google sheets - ask for access to Michael, Recent 29.1.2019 version: Diagnostics tables

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. May 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: 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

As part of the CTRL2016 experiment, we propose a remote sensing evaluation of models using a variety of satellite sensors (MODIS, PARASOL, AATSR) and ground networks (AERONET, SKYNET). The only requirement to contribute to this experiment is high-frequency (3-hourly) output of a few model fields (such as AOD).

Remote sensing groups have provided us with aggregated (1 by 1 degree) observations. Model data will be collocated with these observations to reduce as much as possible spatio-temporal sampling issues. The evaluation should allow us to study model error in the context of observational uncertainty (estimated from ground site comparisons and diversity among satellite datasets). Interpretation of results will be facilitated by the regular CTRL2016 experiment information on emissions, depositions etc.

Contact: Nick Schutgens (Vrije Universiteit, NL); n.a.j.schutgens@vu.nl

Status:

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)

Document(s) with more info: aerocom3_CTRL2016_RemSens_v2.pdf or by emailing Nick Schutgens.

In-situ Measurement Comparison (Optical Properties)

A short description (about a paragraph) should go here. A detailed description can be found here: INSITU_AeroComPIII_description.pdf

Contact: Betsy Andrews (NOAA/ESRL/GMD), Betsy.Andrews@noaa.gov

Status: TBD

Submission deadline: TBD

Timeline: TBD

Follow project progress here: https://docs.google.com/document/d/1buqxPbJ7DhWrwBUgTGV8b47HWAzaeyTTeSzViq8Fo4M/edit?usp=sharing

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: INSITU_Station_Inventory.xlsx

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

Anthropogenic Dust experiment

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: Specifications

Contact: Paul Ginoux (GFDL) paul.ginoux@noaa.gov

Status: Actual participants (Jan 2019): CAM5 (U. Wyoming), GEOS-Chem (U. l'Aquilla), INCA (IPSL/LSCE), AM4 (NOAA-GFDL)

Submission deadline: June 2019

Timeline: Analysis: completion for Aerocom 2019; Paper: 1st draft for Aerocom 2019; Manuscript submission by December 2019

Column with diagnostic requests in excel sheet: Aerocom Phase III Control (AP3-CTRL)

Document(s) with more info: Anthro_dust_AeroComIII.pdf

Dust source: NetCDF files

“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.

“MDB2-A“ 2. Simulate with MDB2 natural sources with Uto, then calculate global emission Cnew to have same global mean annual emission as in 1. Cnew=C0 * (global mean annual emis exp1)/(global mean annual emis exp2)

3. Simulate with MDB2 anthropogenic sources with Cnew and with: “MDB2-Ba” a) Uto “MDB2-Bb“ b) 0.5*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

Historical experiment

A short description (about a paragraph) should go here.

Contact: Gunnar Myhre gunnar.myhre@cicero.oslo.no

Status: TBD

Submission deadline: TBD

Timeline: TBD

Column with diagnostic requests in excel sheet: TBD

Document(s) with more info: TBD

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: TADD_aerocom_exp_final.pdf

Contact: Hongbin Yu (NASA GSFC) Hongbin.Yu@nasa.gov

Status: TBD

Submission deadline: 12-31-2019

Timeline: TBD

Column with diagnostic requests in Google Doc excel sheet: AeroCom diagnostics CTRL + X 2018/2019, see column “TADD”

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: File

Contact: Mian Chin (NASA GSFC) mian.chin@nasa.gov

Status: TBD

Submission deadline: 12-31-2019

Timeline: TBD

Column with diagnostic requests in Google Doc excel sheet: AeroCom diagnostics CTRL + X 2018/2019, see column “UTLS”

Document(s) with more info: TBD

Aerosol-Cloud-Radiation Interaction (ACRI) experiments

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: File

Contact: Mian Chin (NASA GSFC) mian.chin@nasa.gov

Status: TBD

Submission deadline: 12-31-2019

Timeline: TBD

Column with diagnostic requests in Googld Doc excel sheet: AeroCom diagnostics CTRL + X 2018/2019, see column “ACRI”

Document(s) with more info: TBD

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.

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. Some campaign or region focussed analyses build on the baseline experiment with their own sensitivity experiments or specialist diagnostics, such as the ATom experiment. Please refer to each extension analysis for further details.

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 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.

The CIS commands required are very simple and the syntax is described in the documentation documentation. An example command to extract the tracers from a set of model outputs for March 2009 would be:

cis col <tracer_vars>:model_file_2009_03_??.nc all_points_200903??.nc -o tracers_200903.nc

A python interface is also available if preferred.

Contact: Duncan Watson-Parris (Oxford) duncan.watson-parris@physics.ox.ac.uk, Philip Stier (Oxford) philip.stier@physics.ox.ac.uk

Status: Submission phase

Submission deadline: March 2019

Timeline: TBD

Column with diagnostic requests in excel sheet: Aircraft

Document(s) with more info:

Experiment description: AeroCom_aircraft_experiment_v1.6.docx

Requested diagnostics: See Phase III CTRL-X diagnostics ('atFlightTrack' sheet)

Flight-track points: All hindcast points All points fixed to 1850 All points fixed to 2008

Ongoing analyses: 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.

Contact: Huisheng Bian (NASA) huisheng.bian@nasa.gov; Christina Williamson (NOAA) christina.williamson@noaa.gov; Mian Chin (NASA) mian.chin@nasa.gov

Submission deadline: TBD

Status: accepting model submissions. Last update: Feb. 7, 2019.

Document(s) with more info:

Experiment description: ATom_AeroCom_plan_v3.docx

ATom 1-4 flighttracks: ATom1-4-flighttracks.nc.tar

Diagnostic requests: See Phase III CTRL-X diagnostics (sheets of 'aermonthly-2d', 'aermonthly-3d', and 'atFlightTrack')

Volcanic ACI experiment (VolcACI)

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.

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 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.

Contact: Florent Malavelle F.Malavelle@exeter.ac.uk (Holuhraun), Tianle Yuan tianle.yuan@nasa.gov (Kilauea)

Status: Ongoing

Submission deadline: accepting model submissions. Last update: Feb. 5, 2019.

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.

Column with diagnostic requests in excel sheet: Holuhraun. Will update details for Kilauea soon.

Document(s) with more info: Holuhraun. Will update details for Kilauea.

Aerosol GCM Trajectory Experiment

A short description (about a paragraph) should go here.

Contact: Daniel Partridge D.G.Partridge@exeter.ac.uk

Status: TBD

Submission deadline: TBD

Timeline: TBD

Column with diagnostic requests in excel sheet: TBD

Document(s) with more info: TBD

Multi-model PPE

A short description (about a paragraph) should go here.

Contact: Lindsay Lee L.A.Lee@leeds.ac.uk

Status: TBD

Submission deadline: TBD

Timeline: TBD

Column with diagnostic requests in excel sheet: TBD

Document(s) with more info: TBD

Biomass burning 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 described here: File

Contact: Ralph Kahn ralph.kahn@nasa.gov, Xiaohua Pan xiaohua.pan@nasa.gov

Status: TBD

Submission deadline: 12/31/2019

Timeline: TBD

Column with diagnostic requests in Googld Doc excel sheet: AeroCom diagnostics CTRL + X 2018/2019, see column “BBEIH”

Document(s) with more info: TBD

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: 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 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

Finished phase III experiments

AeroCom Control EXPERIMENT 2016

Contact: Michael Schulz (MetNo), michael.schulz@met.no

Experiment Description and motivation:

The model versions used for the different experiments are often not easily comparable. New model versions should be documented regularly to establish a state of the art comparison yearly. For this purpose AeroCom offers a semi-automatic platform with visualization via the AeroCom webinterface. Evaluation with surface observations and Aeronet observations will complete the documentation of emissions, removal, burden, lifetime of the major aerosol species.

In 2016 additional motivation we try to revisit the AeroCom evaluation done in 2006. Also - several experiments have been launched (in-situ optical properties, size, biomass burning, dust, nitrate and detailed 3h hourly evaluation to remote sensing data) which should be linked through common output. Also - models prepare for CMIP6 and might be interested in quick feedback.

Deadline

Deadline for model submissions to be analysed before the Beijing AeroCom workshop: 1.September, on the condition that formatting and naming of files follows the instructions below.

Experiment name: AP3-CTRL2016-PD and AP3-CTRL2016-PI

Two experiments:
One with current eg HTAPv2 emissions (*-PD)
One with preindustrial emissions (*-PI)
OR better using the new CMIP6 emissions….

Output request

Output requested (2D fields, Monthly averages, preferably model nudged to year 2010 meteorology):

Variables-Parameter:Speciation
EMI-Emissions: BC, OA, SO2, DMS, NOx, VOC, DUST, SS
(column integrated, if emission at altitude, eg SOA is accumulated in OA emissions)
LOAD-Column Loads: BC, OA, SO4, NO3, DUST, SS
SCONC-Surface concentrations: PM10, PM25, BC, OA, SO4, NO3, DUST, SS
DEP-Total Deposition: BC, OA, SO4, NO3, DUST, SS
OD550-Aerosol optical depth @550nm: AER, fine mode AER, coarse mode AOD, (tier 2: BC, OA, SO4, NO3, DUST, SS)
Total AOD effective in radiative forcing code (OD550AER) and clearsky AOD (od550csaer)

SWTOA-Top of Atm Fluxes clear-sky and all-sky :

  AER, fine mode AER, coarse mode (//tier 2:// AOD, BC, OA, SO4, NO3, DUST, SS) \\  

LWTOA-Fluxes clear-sky and all-sky : AER, fine mode AER, coarse mode
CCN Number concentration @ 850 hPa
IN Number concentration @ 100 hPa
Total Cloud cover
Cloud Water Path
Low level cloud cover
Precipitation rate

One file per variable and year. Variable names: emioa, emibc, …depbc…swtoacsaer, swtoaasaer…

Use latest variable names from AerChemMIP, and units, standard names as given in these tables:

AerChemMIP tables in EXCEL: EXCEL tables of AerChemMIP data request

OFFICIAL DATA REQUEST THROUGH CMIP6: CMIP6 data request

The directory /media/scratch/incoming/AEROCOM-P3-AUTO-UPLOAD allows for automatic incorporation into the AeroCom database and workup. Uploaded files are processed automatically by the AeroCom tools and transferred into the AeroCom phase III data directory. (Still in testphase, please send an email also to michael.schulz@met.no and anna.benedictow@met.no)

If correct in format and with correct filenames, results uploaded here will be processed over night and appear after few days as image catalogue on http://aerocom.met.no/cgi-bin/aerocom/surfobs_annualrs.pl?PROJECT=AEROCOM&MODELLIST=AEROCOM-Phase-III

Short Recipe (Long version: https://wiki.met.no/aerocom/data_submission)

1) Name files according to HTAPII/AeroComPhaseIII standards. One file per year and variable
aerocom3_<ModelName>_<ExperimentName>_<VariableName>_<VerticalCoordinateType>_<Period>_<Frequency>.nc
for example
aerocom3_GOCART_AP3-CTRL2016_od550aer_Column_2010_monthly.nc

2) Check for cf compliance some files (http://cf-checker.met.no/upload)

3a) obtain account on aerocom-users server

3) create directory on aerocom-users.met.no server:
/media/scratch/incoming/AEROCOM_AUTO_UPLOAD/{MODELNAME}/renamed/
Use exactly the same model name as used for file names. Attention to lower&upper case!!

4) Put files directly into this “renamed” directory.
And send e-mail to jan.griesfeller and michael.schulz and anna.benedictow @met.no

AeroCom Control 2015

Contact: Michael Schulz (MetNo), michael.schulz@met.no

Experiment Description and motivation:

The model versions used for the different experiments are often not easily comparable. New model versions should be documented regularly to establish a state of the art comparison yearly. For this purpose AeroCom offers a semi-automatic platform with visualization via the AeroCom webinterface. Evaluation with surface observations and Aeronet observations will complete the documentation of emissions, removal, burden, lifetime of the major aerosol species.

Deadline for model submissions to be anlaysed before the Frascati AeroCom workshop: 15.September, on the condition that formatting and naming of files follows the instructions below.

Experiment name: AP3-CTRL2015

Output requested (2D fields, Monthly averages, preferably year 2010 meteorology):
EMI Emissions: BC, OA, SO2, DMS, NOx, VOC, DUST, SS
LOAD Column Loads: BC, OA, SO4, NO3, DUST, SS
SCONC Surface concentrations: BC, OA, SO4, NO3, DUST, SS
DEP Total Deposition: BC, OA, SO4, NO3, DUST, SS
OD550 Aerosol optical depth @550nm: AER, OA, SO4, NO3, DUST, SS

The directory /media/scratch/incoming/AEROCOM-P3-AUTO-UPLOAD allows for automatic incorporation into the AeroCom database and workup. Uploaded files are processed automatically by the AeroCom tools and transfered into the AeroCom phase III data directory.

If correct in format and with correct filenames, results uploaded here will be processed over night and appear after few days as image catalogue on http://aerocom.met.no/cgi-bin/aerocom/surfobs_annualrs.pl?PROJECT=AEROCOM&MODELLIST=AEROCOM-Phase-III

Short Recipe (Long version: https://wiki.met.no/aerocom/data_submission)

1) Name files according to HTAPII/AeroComPhaseIII standards. One file per year and variable
aerocom3_<ModelName>_<ExperimentName>_<VariableName>_<VerticalCoordinateType>_<Period>_<Frequency>.nc
for example
aerocom3_GOCART_AP3-CTRL2015_od550aer_Column_2010_monthly.nc

2) Check for cf compliance some files (http://aerocom-test.met.no/upload)

3a) obtain account on aerocom-users server
3) create directory on aerocom-users server:
/media/scratch/incoming/AEROCOM_AUTO_UPLOAD/{MODELNAME}/renamed/
Use exactly the same model name as used for file names. Attention to lower&upper case!!

4) Put files directly into this “renamed” directory.

Nitrate comparison

Contact: Huisheng Bian (GSFC/NASA, JCET/UMBC), Huisheng.Bian@nasa.gov

Experiment Description File

NH3 Emissions from Geia file

File name convention Nitrate Filename Protocol File

Essential nitrate variables file

Aerosol Lifetime experiments, Fukushima tracers

Model output Specifications

Biomass Burning emissions experiments

A short description (about a paragraph) should go here. A detailed description can be found here (updated November 26, 2014): File

Contact: Mariya Petrenko (NASA GSFC, USA; ORAU, USA), mariya.m.petrenko@nasa.gov

Status: Model experiment finished, manuscript is in progress (Petrenko et al.)

Model Description (Questionnaires filled by the groups in 2015): CAM5 (Kai Zhang, Hailong Wang, Xiaohong Liu): CAM5_Liu.xlsx CAM5_References_forAeroComQuestionnaie_Liu.docx CIFS (Johannes Kaiser, Samuel Remy): Aerocom_BB_models_Questionnaire_CIFS.xlsx CIFS_Figures_forQuestionnaire.pdf CIFS_References_forAeroComQuestionnaire.docx ECHAM6-SALSA (Tero Mielonen, Tommi Bergman):Aerocom_BB_models_Questionnaire_ECHAM6-SALSA.xlsx GEOS-CHEM (Gabriele Curci, Anna Protonotariou): Aerocom_BB_models_Questionnaire_GEOS-CHEM.xlsx GOCART (Mian Chin, Mariya Petrenko): Aerocom_BB_models_Questionnaire_GOCART.xlsx HadGEM3 (Ben Johnson): Aerocom_BB_models_Questionnaire_Johnson_HadGEM3-2.xlsx OsloCTM2 (Ragnhild Bieltvedt Skeie, Gunnar Myhre) Aerocom_BB_models_Questionnaire_1_OsloCTM2_final.xlsx SPRINTARS (Toshihiko Takemura): Aerocom_BB_models_Questionnaire_1_SPRINTARS.xlsx SPRINTARS_References_forAeroComQuestionnaie.docx GISS ModelE (Keren Mezuman, Susanne Bauer, Kostas Tsigaridis): 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: 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 HTAP website

aerocom/phase3-experiments.1550141409.txt.gz · Last modified: 2019-02-14 10:50:09 by duncan.watson-parris@physics.ox.ac.uk