WHAT CAN WE LEARN ABOUT UPPER TROPOSPHERIC CO2?

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Presentation transcript:

WHAT CAN WE LEARN ABOUT UPPER TROPOSPHERIC CO2? Xun Jiang1,2, Qinbin Li1,3, Moustafa Chahine1, Luke Chen1, Edward Olsen1 Paul Dimotakis1, Yuk Yung4, Jim Randerson5 1JPL 2Univ. Houston 3UCLA 4Caltech 5UCI The 4th GEOS-Chem Meeting, 4/8/09, Harvard

CO2 Weather July 2003 Chahine [GRL, 2008]

SUDDEN STRATOSPHERIC WARMING AND POLAR CO2 AND O3 AIRS CO2 increases while O3 decreases following a SSW event. Jiang [JAS, submitted]

SUDDEN STRATOSPHERIC WARMING cont’d Before After CO2 O3

MATSUEDA AIRBORNE FLASK CO2 MEASUREMENTS JAL flights (every two weeks)

GEOS-Chem SIMULATION OF UPPER TROP. CO2 Jiang [GBC, 2008] — GEOS-Chem 3D (CMDL BC) — GEOS-Chem 3D (Source/Sink) — CJCTM 2D (CMDL BC) — MOZART2 (CMDL BC) Jiang [GBC, 2008]

(DETRENDED) SEASONAL CYCLE OF UPPER TROP. CO2 — GEOS-Chem 3D (CMDL BC) — GEOS-Chem 3D (Source/Sink) — CJCTM 2D (CMDL BC) — MOZART2 (CMDL BC)

SEASONAL CYCLE AMPLITUDE OF UPPER TROP. CO2 2-D CTM MOZART GC CMDL GC S/S

SEMI-ANNUAL CYCLE IN UPPER TROPOSPHERIC CO2? 6-month signal not included 2-D CTM CO2 @ 35°N 6-month signal included

SEMI-ANNUAL CYCLE: GEOS-Chem RESULTS