Distribution and Variation of Carbon Monoxide in the Tropical Troposphere and Lower Stratosphere
Distribution and Variation of Carbon Monoxide in the Tropical Troposphere and Lower Stratosphere
复制标题
热带对流层和平流层低层一氧化碳的分布和变化
DOI：
10.3878/j.issn.1674-2834.13.0111
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发表时间：
2014-01
影响因子：
2.3
通讯作者：
LU Daren
中科院分区：
文献类型：
--
作者：
LI Qian;SHI Huanfeng;SHAO Aimei;BIAN Jianchun;LU Daren
本文研究了热带地区从地面到平流层下部一氧化碳(CO)的分布和变化。通过分析星载微波测深仪(MLS)、对流层污染测量(MOPITT)和现代研究与应用回顾分析(MERRA)气象产品，以及大气化学和气候模式比较计划(ACCMIP)地面排放清单，研究了大气动力学和地面排放的影响。结果表明，热带地区不同季节有四个CO高浓区中心，北半球有两个中心，南半球有两个中心。所有这些中心都对应于局地深对流系统和季风/反气旋。作者认为，深对流和反气旋都会影响热带对流层和平流层下部的CO，前者有助于将CO从对流层下部输送到对流层中层(甚至更高)，后者的动力抬升和隔离效应有助于在对流层上部和平流层下部(UTLS)建立高度集中的CO。同样，生物质燃烧排放每年有两个地表排放高峰：一个来自北半球，另一个来自南半球。两者共同作用，在深对流和季风的共同作用下，促进了大气中CO的高度混合，控制了UTLS中CO的季节变化。结果还显示，人为来源的排放量相对稳定，小幅增加主要来自东南亚和印度。在地面水平风、深层对流和亚洲夏季风系统的共同作用下，这些排放可以输送到西藏上空的UTLS。
Abstract The authors examine the distribution and variation of carbon monoxide (CO) in the tropics from the surface to the lower stratosphere. By analyzing space-borne microwave limb sounder (MLS) measurements, measurements of pollution in the troposphere (MOPITT) and modern-era retrospective analysis for research and applications (MERRA) meteorological products, and atmospheric chemistry and climate model intercomparison project (ACCMIP) surface emission inventories, the influences of atmospheric dynamics and surface emissions are investigated. The results show that there are four centers of highly concentrated CO mixing ratio over tropical areas in different seasons: two in the Northern Hemisphere and another two in the Southern Hemisphere. All of these centers correspond to local deep convective systems and monsoons/anticyclones. The authors suggest that both deep convections and anticyclones affect CO in the tropical troposphere and lower stratosphere — the former helping to transport CO from the lower to the middle troposphere (or even higher), and the dynamical uplift and isolation effects of the latter helping to build up highly concentrated CO in the upper troposphere and lower stratosphere (UTLS). Similarly, there are two annual surface emission peaks induced by biomass burning emissions: one from the Northern Hemisphere and the other from the Southern Hemisphere. Both contribute to the highly concentrated CO mixing ratio and control the seasonal variabilities of CO in the UTLS, combining the effects of deep convections and monsoons. Results also show a relatively steady emission rate from anthropogenic sources, with a small increase mainly coming from Southeast Asia and India. These emissions can be transported to the UTLS over Tibet by the joint effort of surface horizontal winds, deep convections, and the Asian summer monsoon system.
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影响因子：
5.2
作者：
J. Kar;H. Bremer;J. Drummond;Y. Rochon;Dylan B. A. Jones;F. Nichitiu;J. Zou;Jane Liu;J. Gille;D. Edwards;M. Deeter;G. Francis;D. Ziskin;J. Warner
通讯作者：
J. Kar;H. Bremer;J. Drummond;Y. Rochon;Dylan B. A. Jones;F. Nichitiu;J. Zou;Jane Liu;J. Gille;D. Edwards;M. Deeter;G. Francis;D. Ziskin;J. Warner
影响因子：
--
作者：
C. Hong
通讯作者：
C. Hong
DOI：
10.5860/choice.34-0990
发表时间：
1995
期刊：
--
影响因子：
--
作者：
H. Singh
通讯作者：
H. Singh
影响因子：
1.1
作者：
M. Camara;A. Diedhiou;A. Gaye
通讯作者：
M. Camara;A. Diedhiou;A. Gaye
影响因子：
7.5
作者：
J. Houghton;Y. Ding;D. Griggs;M. Noguer;P. Linden;X. Dai;K. Maskell;C. Johnson
通讯作者：
J. Houghton;Y. Ding;D. Griggs;M. Noguer;P. Linden;X. Dai;K. Maskell;C. Johnson