The influence of tropospheric biennial oscillation on mid-tropospheric CO2

被引：13

作者：

Wang, Jingqian ^{[1
]}

Jiang, Xun ^{[1
]}

Chahine, Moustafa T. ^{[2
]}

Liang, Mao-Chang ^{[3
,5
]}

Olsen, Edward T. ^{[2
]}

Chen, Luke L. ^{[2
]}

Licata, Stephen J. ^{[2
]}

Pagano, Thomas S. ^{[2
]}

Yung, Yuk L. ^{[4
]}

机构：

[1] Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77204 USA

[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[3] Acad Sinica, Res Ctr Environm Changes, Taipei 115, Taiwan

[4] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

[5] Natl Cent Univ, Grad Inst Astron, Jhongli, Taiwan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

关键词：

SUMMER MONSOON; ASIAN MONSOON; VARIABILITY; OCEAN; RAINFALL;

D O I：

10.1029/2011GL049288

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Mid-tropospheric CO2 retrieved from the Atmospheric Infrared Sounder (AIRS) was used to investigate CO2 inter-annual variability over the Indo-Pacific region. A signal with periodicity around two years was found for the AIRS mid-tropospheric CO2 for the first time, which is related to the Tropospheric Biennial Oscillation (TBO) associated with the strength of the monsoon. During a strong (weak) monsoon year, the Western Walker Circulation is strong (weak), resulting in enhanced (diminished) CO2 transport from the surface to the mid-troposphere. As a result, there are positive (negative) CO2 anomalies at mid-troposphere over the Indo-Pacific region. We simulated the influence of the TBO on the mid-tropospheric CO2 over the Indo-Pacific region using the MOZART-2 model, and results were consistent with observations, although we found the TBO signal in the model CO2 is to be smaller than that in the AIRS observations. Citation: Wang, J., X. Jiang, M. T. Chahine, M.-C. Liang, E. T. Olsen, L. L. Chen, S. J. Licata, T. S. Pagano, and Y. L. Yung (2011), The influence of tropospheric biennial oscillation on mid-tropospheric CO2, Geophys. Res. Lett., 38, L20805, doi:10.1029/2011GL049288.

引用

页数：6

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