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Title: Assessing the impacts of assimilating IASI and MOPITT CO retrievals using CESM-CAM-chem and DART

Abstract

We report on the results and evaluation with independent measurements from assimilating both MOPITT (Measurements Of Pollution In The Troposphere) and IASI (Infrared Atmospheric Sounding Interferometer) retrieved profiles into the Community Earth System Model (CESM). We used the Data Assimilation Research Testbed ensemble Kalman filter technique, with the full atmospheric chemistry CESM component Community Atmospheric Model with Chemistry. We first discuss the methodology and evaluation of the current data assimilation system with coupled meteorology and chemistry data assimilation. The various capabilities of MOPITT and IASI retrievals are highlighted, with specific attention to instrument vertical sensitivity and coverage and how these impact the analyses. MOPITT and IASI CO retrievals mostly constrain the CO fields close to the main anthropogenic, biogenic, and biomass burning CO sources. In the case of IASI CO assimilation, we also observe constraints on CO far from the sources. During the simulation time period (June and July 2008), CO assimilation of both instruments strongly improves the atmospheric CO state as compared to independent observations, with the higher spatial coverage of IASI providing better results on the global scale. Yet, the enhanced sensitivity of multispectral MOPITT observations to near surface CO over the main source regions provides synergistic effectsmore » at regional scales.« less

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [3];  [1];  [1];  [4];  [4]
  1. National Center for Atmospheric Research, Boulder, CO (United States)
  2. Univ. of Arizona, Tucson, AZ (United States)
  3. National Centre for Scientific Research (CNRS), Paris (France); Université Libre de Bruxelles (ULB), Brussels (Belgium)
  4. Université Libre de Bruxelles (ULB), Brussels (Belgium)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
National Aeronautics and Space Administration (NASA); USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF); NCAR's Computational and Information Systems Laboratory
OSTI Identifier:
1510739
Grant/Contract Number:  
AC02-05CH11231; NNX09AH03GS02; NNX11AI10G; NNX11AG63G
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Volume: 120; Journal Issue: 19; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; carbon monoxide; data assimilation; global climate model; remote sensing; atmospheric chemistry; emissions

Citation Formats

Barré, Jérôme, Gaubert, Benjamin, Arellano, Avelino F. J., Worden, Helen M., Edwards, David P., Deeter, Merritt N., Anderson, Jeffrey L., Raeder, Kevin, Collins, Nancy, Tilmes, Simone, Francis, Gene, Clerbaux, Cathy, Emmons, Louisa K., Pfister, Gabriele G., Coheur, Pierre‐François, and Hurtmans, Daniel. Assessing the impacts of assimilating IASI and MOPITT CO retrievals using CESM-CAM-chem and DART. United States: N. p., 2015. Web. doi:10.1002/2015jd023467.
Barré, Jérôme, Gaubert, Benjamin, Arellano, Avelino F. J., Worden, Helen M., Edwards, David P., Deeter, Merritt N., Anderson, Jeffrey L., Raeder, Kevin, Collins, Nancy, Tilmes, Simone, Francis, Gene, Clerbaux, Cathy, Emmons, Louisa K., Pfister, Gabriele G., Coheur, Pierre‐François, & Hurtmans, Daniel. Assessing the impacts of assimilating IASI and MOPITT CO retrievals using CESM-CAM-chem and DART. United States. https://doi.org/10.1002/2015jd023467
Barré, Jérôme, Gaubert, Benjamin, Arellano, Avelino F. J., Worden, Helen M., Edwards, David P., Deeter, Merritt N., Anderson, Jeffrey L., Raeder, Kevin, Collins, Nancy, Tilmes, Simone, Francis, Gene, Clerbaux, Cathy, Emmons, Louisa K., Pfister, Gabriele G., Coheur, Pierre‐François, and Hurtmans, Daniel. Fri . "Assessing the impacts of assimilating IASI and MOPITT CO retrievals using CESM-CAM-chem and DART". United States. https://doi.org/10.1002/2015jd023467. https://www.osti.gov/servlets/purl/1510739.
@article{osti_1510739,
title = {Assessing the impacts of assimilating IASI and MOPITT CO retrievals using CESM-CAM-chem and DART},
author = {Barré, Jérôme and Gaubert, Benjamin and Arellano, Avelino F. J. and Worden, Helen M. and Edwards, David P. and Deeter, Merritt N. and Anderson, Jeffrey L. and Raeder, Kevin and Collins, Nancy and Tilmes, Simone and Francis, Gene and Clerbaux, Cathy and Emmons, Louisa K. and Pfister, Gabriele G. and Coheur, Pierre‐François and Hurtmans, Daniel},
abstractNote = {We report on the results and evaluation with independent measurements from assimilating both MOPITT (Measurements Of Pollution In The Troposphere) and IASI (Infrared Atmospheric Sounding Interferometer) retrieved profiles into the Community Earth System Model (CESM). We used the Data Assimilation Research Testbed ensemble Kalman filter technique, with the full atmospheric chemistry CESM component Community Atmospheric Model with Chemistry. We first discuss the methodology and evaluation of the current data assimilation system with coupled meteorology and chemistry data assimilation. The various capabilities of MOPITT and IASI retrievals are highlighted, with specific attention to instrument vertical sensitivity and coverage and how these impact the analyses. MOPITT and IASI CO retrievals mostly constrain the CO fields close to the main anthropogenic, biogenic, and biomass burning CO sources. In the case of IASI CO assimilation, we also observe constraints on CO far from the sources. During the simulation time period (June and July 2008), CO assimilation of both instruments strongly improves the atmospheric CO state as compared to independent observations, with the higher spatial coverage of IASI providing better results on the global scale. Yet, the enhanced sensitivity of multispectral MOPITT observations to near surface CO over the main source regions provides synergistic effects at regional scales.},
doi = {10.1002/2015jd023467},
journal = {Journal of Geophysical Research: Atmospheres},
number = 19,
volume = 120,
place = {United States},
year = {Fri Aug 21 00:00:00 EDT 2015},
month = {Fri Aug 21 00:00:00 EDT 2015}
}

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Cited by: 19 works
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