气候变化领域集成服务门户(CCPortal): Enhanced upward motion through the troposphere over the tropical western Pacific and its implications for the transport of trace gases from the troposphere to the stratosphere

CCPortal

DOI	10.5194/acp-22-4393-2022
	Enhanced upward motion through the troposphere over the tropical western Pacific and its implications for the transport of trace gases from the troposphere to the stratosphere
	Qie, Kai; Wang, Wuke; Tian, Wenshou; Huang, Rui; Xu, Mian; Wang, Tao; Peng, Yifeng
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	4393
结束页码	4411
卷号	22 期号:7 页码:19
英文摘要	The tropical western Pacific (TWP) is a preferential area of air uplifting from the surface to the upper troposphere. A significantly intensified upward motion through the troposphere over the TWP in the boreal wintertime (November to March of the following year, NDJFM) has been detected using multiple reanalysis datasets. The upward motion over the TWP is intensified at rates of 8.0 +/- 3.1 % per decade and 3.6 +/- 3.3 % per decade in NDJFM at 150 hPa from 1958 to 2017, using JRA55 and ERAS reanalysis datasets, while the MERRA-2 reanalysis data show a 7.5 +/- 7.1 % per decade intensified upward motion for the period 1980-2017. Model simulations using the Whole Atmosphere Community Climate Model, version 4 (WACCM4), suggest that warming global sea surface temperatures (SSTs), particularly SSTs over the eastern maritime continent and tropical western Pacific, play a dominant role in the intensification of the upward motion by strengthening the Pacific Walker circulation and enhancing the deep convection over the TWP. Using CO as a tropospheric tracer, the WACCM4 simulations show that an increase in CO at a rate of 0.4 ppbv (parts per billion by volume) per decade at the layer 150-70 hPa in the tropics is mainly resulted from the global SST warming and the subsequent enhanced upward motion over the TWP in the troposphere and strengthened tropical upwelling of Brewer-Dobson (BD) circulation in the lower stratosphere. This implies that more tropospheric trace gases and aerosols from both natural maritime sources and outflow from polluted air from South Asia may enter the stratosphere through the TWP region and affect the stratospheric chemistry and climate.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000780849400001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273122
作者单位	Lanzhou University; China University of Geosciences
推荐引用方式 GB/T 7714	Qie, Kai,Wang, Wuke,Tian, Wenshou,et al. Enhanced upward motion through the troposphere over the tropical western Pacific and its implications for the transport of trace gases from the troposphere to the stratosphere[J],2022,22(7):19.
APA	Qie, Kai.,Wang, Wuke.,Tian, Wenshou.,Huang, Rui.,Xu, Mian.,...&Peng, Yifeng.(2022).Enhanced upward motion through the troposphere over the tropical western Pacific and its implications for the transport of trace gases from the troposphere to the stratosphere.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(7),19.
MLA	Qie, Kai,et al."Enhanced upward motion through the troposphere over the tropical western Pacific and its implications for the transport of trace gases from the troposphere to the stratosphere".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.7(2022):19.