1 National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California Atmospheric Infrared Sounder Remote Sensing of CO 2 in the Upper Troposphere by the Atmospheric Infrared Sounder Jet Propulsion Laboratory California Institute of Technology 12/10/2007 Xun Jiang, Moustafa T. Chahine, Qinbin Li, Edward T. Olsen, Luke Chen, M. Liang, R. Shia and Yuk Yung (focus on high-latitude)
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Remote Sensing of CO 2 in the Upper Troposphere by the Atmospheric Infrared Sounder
Remote Sensing of CO 2 in the Upper Troposphere by the Atmospheric Infrared Sounder. (focus on high-latitude). Xun Jiang, Moustafa T. Chahine, Qinbin Li, Edward T. Olsen, Luke Chen, M. Liang, R. Shia and Yuk Yung. Jet Propulsion Laboratory California Institute of Technology 12/10/2007. - PowerPoint PPT Presentation
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National Aeronautics and Space Administration
Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California
Atmospheric Infrared Sounder
Remote Sensing of CO2 in the Upper Troposphere by the Atmospheric Infrared
Sounder
Jet Propulsion Laboratory
California Institute of Technology
12/10/2007
Xun Jiang, Moustafa T. Chahine, Qinbin Li, Edward T. Olsen, Luke Chen, M. Liang, R. Shia and Yuk Yung
(focus on high-latitude)
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National Aeronautics and Space Administration
Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California
Atmospheric Infrared Sounder Overview
Motivation
Validation of AIRS CO2
Stratospheric Sudden Warming: Influence on CO2 and O3
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National Aeronautics and Space Administration
Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California
Atmospheric Infrared Sounder Motivation
Improve the understanding of the global warming, large-scale dynamics and stratosphere-troposphere interactions
Offer a unique opportunity to validate and improve the vertical transport in the models
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National Aeronautics and Space Administration
Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California
Atmospheric Infrared Sounder Data
AIRS CO2 and O3
Aircraft Data of CO2 from Matsueda et al. [2002], Climate Monitoring & Diagnostics Laboratory (CMDL), and SPURT Aircraft [Hoor et al., 2004]
Ozonesonde data from World Ozone and Ultraviolet Data (WOUDC)
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National Aeronautics and Space Administration
Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California
Atmospheric Infrared Sounder
Comparison Between AIRS CO2 with Matsueda Aircraft Data
CO2 retrieved by Vanishing Partial Derivatives (VPD)M. Chahine, C. Barnet, E.T. Olsen, L. Chen, and E. Maddy [2005, GRL]
SD: -1.14 ± 1.44 ppmv
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National Aeronautics and Space Administration
Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California
Atmospheric Infrared Sounder
Comparison Between AIRS CO2 with Aircraft Data in High Latitude
Dots: Aircraft CO2 weighted by AIRS weighting function Contour: NCEP2 GPH at 500 hPa; Vector: NCEP2 wind vector at 500 hPaCourtesy of Peter Hoor for SPURT CO2 [Hoor et al., 2004] and Dr. Michada for
CO2 at 55N, 83E
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National Aeronautics and Space Administration
Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena, California
Atmospheric Infrared Sounder
Comparison Between AIRS CO2 with SPURT Aircraft Data
SD: -0.9 ± 1.33 ppmv
Dots: Aircraft CO2 weighted by AIRS weighting function Contour: NCEP2 GPH at 500 hPa; Vector: NCEP2 wind vector at 500 hPa
Version 5 VPD AIRS CO2
● Matsueda CO2 aircraft data
● CMDL CO2 aircraft data ● Michada CO2 aircraft data ● SPURT CO2 aircraft data—— Version 5 AIRS CO2
—— Count of Clusters—— CJCTM 2D (CMDL BC)—— GEOS-Chem 3D (CMDL BC)—— GEOS-Chem 3D (Source/Sink)—— MOZART2 (CMDL BC)
Version 5 VPD AIRS O3
● Ozonesonde Data
—— Version 5 AIRS O3
—— Count of Clusters—— CJCTM 2D—— GEOS-Chem 3D—— J. Logan O3 Climatology
Stratospheric Sudden Warming
Strongest dynamical coupling in the stratosphere-troposphere system
It has important influence on the chemical tracers
Stratospheric Major Warming: averaged 60-80ºN zonal mean winds and 60ºN zonal mean wind reverse sign
[Decrease of vortex area; Less downwelling in the polar region]
Influence of Sudden Stratospheric Warming on CO2 and O3 AIRS- April 2003
AIRS retrieved upper tropospheric CO2 increases while AIRS 300 mb O3 decreases following a sudden stratospheric warming event
40 ppbv
—— AIRS Retrieved CO2 —— AIRS Retrieved O3
—— Zonal Wind at 60N-80N - - - AIRS Temperature at 50N-90N
April 1 April 30
40 ppbv
- - - Model CO2 - - - Model O3
April 1 April 30
Influence of Sudden Stratospheric Warming on CO2 and O3 AIRS- April 2003
AIRS retrieved upper tropospheric CO2 increases while AIRS 300 mb O3 decreases following a sudden stratospheric warming event
—— AIRS Retrieved CO2 —— AIRS Retrieved O3
—— Zonal Wind at 60N-80N - - - AIRS Temperature at 50N-90N
Before SSW After SSW
CO2
O3
Contour: NCEP2 GPH at 500 hPa
AIRS CO2 (Apr 2003) AIRS O3 (Apr 2003)
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Conclusions
With AIRS, we monitor the distribution and transport of global CO2 on a weekly basis for the first time.
The latitudinal distribution of AIRS retrievals of upper tropospheric CO2 agrees reasonably well with in situ aircraft observations of CO2 and model simulations.
AIRS retrieved upper tropospheric CO2 increases while AIRS 300 mb O3 decreases following a sudden stratospheric warming event.