The influence of tropospheric biennial oscillation on mid-tropospheric CO(2)

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50922

Title:	The influence of tropospheric biennial oscillation on mid-tropospheric CO(2)
Authors:	Wang,JQ;Jiang,X;Chahine,MT;Liang,MC;Olsen,ET;Chen,LL;Licata,SJ;Pagano,TS;Yung,YL
Contributors:	天文研究所
Keywords:	MONSOON RAINFALL;SUMMER MONSOON;ASIAN MONSOON;VARIABILITY;OCEAN;SYSTEM
Date:	2011
Issue Date:	2012-03-27 18:12:58 (UTC+8)
Publisher:	國立中央大學
Abstract:	Mid-tropospheric CO(2) retrieved from the Atmospheric Infrared Sounder (AIRS) was used to investigate CO(2) inter-annual variability over the Indo-Pacific region. A signal with periodicity around two years was found for the AIRS mid-tropospheric CO(2) 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) CO(2) transport from the surface to the mid-troposphere. As a result, there are positive (negative) CO(2) anomalies at mid-troposphere over the Indo-Pacific region. We simulated the influence of the TBO on the mid-tropospheric CO(2) 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 CO(2) 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 CO(2), Geophys. Res. Lett., 38, L20805, doi:10.1029/2011GL049288.
Relation:	GEOPHYSICAL RESEARCH LETTERS
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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