globalchange  > 科学计划与规划
DOI: 10.1002/2014GL062737
论文题名:
Direct impacts of waves on tropical cold point tropopause temperature
作者: Kim J.-E.; Alexander M.J.
刊名: Geophysical Research Letters
ISSN: 0094-8926
EISSN: 1944-8657
出版年: 2015
卷: 42, 期:5
起始页码: 1584
结束页码: 1592
语种: 英语
英文关键词: cirrus clouds ; cold point temperature ; equatorial waves ; reanalysis temperature ; stratospheric water vapor ; tropical tropopause layer
Scopus关键词: Budget control ; Earth (planet) ; Offshore structures ; Radiosondes ; Tropics ; Water vapor ; Cirrus clouds ; Cold point ; Equatorial waves ; Reanalysis ; Tropical tropopause layers ; Clouds ; cirrus ; equatorial wave ; radiation budget ; radiosonde ; troposphere ; water vapor
英文摘要: Cold point tropopause temperature is a key regulator of cirrus clouds and stratospheric water vapor, which have significant impacts on the Earth's radiation budget and climate. Using tropical radiosonde observations, we show that waves in the tropical tropopause layer lower cold point temperature by 1.6 K on average relative to the seasonal mean. Furthermore, wave activity in the tropical tropopause layer has not been constant over the last 2.5 decades, altering the magnitude of the wave impacts on cold point temperature at a decadal scale. The change in the direct wave impact is partially (~20-30%) responsible for the sudden decrease in cold point temperature and stratospheric water vapor at the end of 2000, which has not been fully explained by changes in the Brewer-Dobson circulation. We further show that these wave impacts are not well represented in reanalysis data. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925878381&doi=10.1002%2f2014GL062737&partnerID=40&md5=5958a2c94125fc51e21a3ace68ebd017
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8542
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, United States

Recommended Citation:
Kim J.-E.,Alexander M.J.. Direct impacts of waves on tropical cold point tropopause temperature[J]. Geophysical Research Letters,2015-01-01,42(5).
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