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aerocom:phase3-experiments

AeroCom phase III experiments

A new AeroCom phase III experiment was recently added (in March 2015) in order to compare in-situ aerosol optical property measurements to model output. The new experiment has three tiers: (I) Evaluation of dry, in-situ optical parameters, (II) Trend analysis of dry, in-situ optical properties, and (III) Evaluation of hygroscopicity of aerosol scattering. The objective of the dry aerosol comparison project is to evaluate the performance of multiple AeroCom aerosol models using in-situ surface aerosol optical property measurement climatologies in a way that will inform improvements to model aerosol modules. Modellers should have received an email request for model output in mid-April 2015. If you have not already, please respond to the request as soon as possible. Detailed information on the project can be found below.

During the 2013 AeroCom workshop in Hamburg, Germany, several comparison/perturbation model experiments were proposed, aiming to having better understanding of the controlling processes of aerosol distributions and effects and coordination with other international activities. They include:

HTAP2: This model experiment is in coordination with the UN TF HTAP phase 2 activity, focusing on (1) estimating the relative contributions of regional and extra-regional sources of anthropogenic, dust, and biomass burning aerosols in regions of interest, (2) defining source/receptor relationships in the context of surface air quality and vertical amount, (3) evaluating model simulations with observations to characterize the uncertainties, and (4) assessing the emission and transport impacts on regional and global air quality, ecosystems, human health, and climate.

Nitrate: Nitrate is an important aerosol component and is likely to play an increasingly significant role in future climate. This first AeroCom nitrate model experiment will (1) address the diversity of nitrate simulations by the AeroCom model and understand the reasons for the intermodal differences, (2) compare model simulated nitrate with measurements from ground networks, aircraft campaigns, and satellite retrievals, and (3) investigate how nitrate formation changes in different models in response the perturbation of precursor emissions and meteorological conditions.

Biomass burning: The goal of this proposed model experiment is to tackle two main biomass burning emission parameters: Source strength and injection height. The objectives are to (1) inter-compare and quantify the accuracy and diversity of AeroCom models in simulating biomass burning AOD with the same “standard” emission sources, (2) perturb the emissions with a range of scaling factors to identify the optimal emission strength in different regions, and (3) test the smoke injection height-emission strength relationship in global models.

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}

OVERVIEW table of experiments in excel see here

Frequently asked questions to AeroCom phase III see here

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

Emissions

Emissions are not requested to be harmonized. However, it is recommended to make use of the latest HTAP_v2 emissions.

See more details on htap website: http://iek8wikis.iek.fz-juelich.de/HTAPWiki/WP1.1

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 anlaysed 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 (*-PD)
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) 
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 Low level cloud cover Precipitation rate

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

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-CTRL2016_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.

Remote Sensing evaluation for AeroCom Control 2016

Contact: Nick Schutgens (University of Oxford, UK); schutgens@physics.ox.ac.uk
Submission deadline: May 1 2017 (proposed)

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.

More information can be obtained from aerocom3_CTRL2016_RemSens_v2.pdf or by emailing Nick Schutgens.

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.

In-situ Measurement Comparison (Optical Properties)

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

Experiment Description INSITU_AeroComPIII_description.pdf

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

Follow project progress here: https://docs.google.com/document/d/1buqxPbJ7DhWrwBUgTGV8b47HWAzaeyTTeSzViq8Fo4M/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

Contact: Markus Fiebig (NILU), Markus.Fiebig@nilu.no; Stephen Platt (NILU), StephenMatthew.Platt@nilu.no

Experiment Description AeroComPIII_INSITU_PNSD_description_v1.pdf

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

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

Biomass Burning emissions experiments

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

Experiment Description (updated November 26, 2014)File

Model output file naming convention (September 11, 2014) File

Variable names for model output (highlighted in blue/cyan; October 16, 2014) File ← Satellite overpass-time output is no longer requested. Only 3-hr and daily.

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

HTAP 2 experiments

Contact: Mian Chin (NASA) mian.chin@nasa.gov; Michael Schulz (MetNo) michael.schulz@met.no

AeroCom specific experiment description for HTAP2 File

HTAP2 experiment description HTAP website

Aerosol Lifetime experiments, Fukushima tracers

Model output Specifications

Anthropogenic Dust experiment

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

Experiment Specifications Dust source: NetCDF files

“EXPERIMENT NAMES”:

“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-C” 4. Simulate with MDB2 natural and anthropogenic sources with Cnew and Uto

UTLS aerosol experiments

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

Specific description for UTLS aerosol experiments File

aerocom/phase3-experiments.txt · Last modified: 2017-01-10 15:47:09 by schutgens@physics.ox.ac.uk