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Global Distribution of CO2 in Mid Troposphere from Global Distribution of CO2 in Mid Troposphere from the Atmospheric Infrared Sounder (AIRS) the Atmospheric Infrared Sounder (AIRS) Measurements Reveal Cross Equator ExchangeMeasurements Reveal Cross Equator Exchange
Yuk L. YungYuk L. Yung1,*1,*, Run-Lie Shia, Run-Lie Shia11, Xun Jiang, Xun Jiang22, Mao-Chiang Liang, Mao-Chiang Liang33, , King-Fai LiKing-Fai Li11, Le Kuai, Le Kuai11, Charles E. Miller, Charles E. Miller44, Moustafa Chahine, Moustafa Chahine44, , Edward T. OlsenEdward T. Olsen44, Luke Chen, Luke Chen44
• Division of Geological and Planetary Sciences, California Institute of Technology, 150- 21 Division of Geological and Planetary Sciences, California Institute of Technology, 150- 21 Caltech, Pasadena, CA 91125Caltech, Pasadena, CA 91125
• Department of Earth and Atmospheric Sciences, University of Houston, The University of Department of Earth and Atmospheric Sciences, University of Houston, The University of Houston, 4800 Calhoun Rd., Houston, TX 77204Houston, 4800 Calhoun Rd., Houston, TX 77204
• Research Center for Environmental Changes, Academia Sinica, 128 Sec. 2, Academia Rd., Research Center for Environmental Changes, Academia Sinica, 128 Sec. 2, Academia Rd., Nankang, Taipei, 115, TaiwanNankang, Taipei, 115, Taiwan
• Science Division, Jet Propulsion Laboratory, California Institute of Technology, USA, Science Division, Jet Propulsion Laboratory, California Institute of Technology, USA, Science Division, Jet Propulsion Laboratory, Pasadena, CA 91109Science Division, Jet Propulsion Laboratory, Pasadena, CA 91109
Photo: Aqua/AIRS Global Carbon Dioxidehttp://svs.gsfc.nasa.gov/vis/a000000/a003400/a003440/index.html
OutlineOutline
ModelsModels DataData TransportTransport
Shia, Liang, Miller, Yung, GRL 2006
Seasonal CyclesSeasonal Cycles
MozartMozart
MozartMozart
MozartMozart
MozartMozart
Mozart (3D)Mozart (3D) Boundary ConditionBoundary Condition
MozartMozart
MozartMozart
OutlineOutline
ModelsModels DataData TransportTransport
Chahine et al. 2008
Strow et al. 2007
OutlineOutline
ModelsModels DataData TransportTransport
Compare with Carbon TrackerCompare with Carbon Tracker
Green=NH, Red=SH, Black=FluxGreen=NH, Red=SH, Black=Flux
Fluxes from level 1 to 5Fluxes from level 1 to 5
Green=NH, Red=SH, Black=FluxGreen=NH, Red=SH, Black=Flux
SummarySummary
Data shows evidence for Data shows evidence for enhanced transportenhanced transport
Models shows COModels shows CO22 transport transport
in high tropospherein high troposphere Transport sensitive to KTransport sensitive to Kyy yy
(small scale processes)(small scale processes)
Backup SlidesBackup Slides
Table 1
Of the nearly 7 GT-C/yr net CO2 source created in N.H. 75% is transported into S.H. and 48% is absorbed by the surface of S.H.
Sensitivity Tests, 20% reduction of : Kyy => 10% decrease of the cross equator fluxKzz => 4%PSI => 1%
Distribution of S.H. sink 0-30 deg. S. 75% (source)30-60 deg. S. 30%60-90 deg. S. -5%
Strow et al. 2007
Chahine et al. 2008
Yung et al., CO2 Exchange Across the EquatorAIRS Science Team Meeting 2009