DOI: 10.1175/JCLI-D-16-0633.1
Scopus记录号: 2-s2.0-85017168736
论文题名: Radiative effects of stratospheric seasonal cycles in the tropical upper troposphere and lower stratosphere
作者: Gilford D.M. ; Solomon S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 8 起始页码: 2769
结束页码: 2783
语种: 英语
Scopus关键词: Budget control
; Clouds
; Ozone
; Ozone layer
; Radiative transfer
; Tropics
; Troposphere
; Upper atmosphere
; Microwave limb sounder
; Northern Hemispheres
; Radiation budget
; Radiative temperature
; Radiative transfer model
; Seasonal cycle
; Stratospheric ozone
; Tropopause
; Water vapor
英文摘要: Water vapor and ozone are powerful radiative constituents in the tropical lower stratosphere, impacting the local heating budget and nonlocally forcing the troposphere below. Their near-tropopause seasonal cycle structures imply associated "radiative seasonal cycles" in heating rates that could affect the amplitude and phase of the local temperature seasonal cycle. Overlying stratospheric seasonal cycles of water vapor and ozone could also play a role in the lower stratosphere and upper troposphere heat budgets through nonlocal propagation of radiation. Previous studies suggest that the tropical lower stratospheric ozone seasonal cycle radiatively amplifies the local temperature seasonal cycle by up to 35%, while water vapor is thought to have a damping effect an order of magnitude smaller. This study uses Aura Microwave Limb Sounder observations and an offline radiative transfer model to examine ozone, water vapor, and temperature seasonal cycles and their radiative linkages in the lower stratosphere and upper troposphere. Radiative sensitivities to ozone and water vapor vertical structures are explicitly calculated, which has not been previously done in a seasonal cycle context. Results show that the water vapor radiative seasonal cycle in the lower stratosphere is not sensitive to the overlying water vapor structure. In contrast, about one-third of ozone's radiative seasonal cycle amplitude at 85 hPa is associated with longwave emission above 85 hPa. Ozone's radiative effects are not spatially homogenous: for example, the Northern Hemisphere tropics have a seasonal cycle of radiative temperature adjustments with an amplitude 0.8 K larger than the Southern Hemisphere tropics. © 2017 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
; NSF, Norsk Sykepleierforbund
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49713
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Gilford D.M.,Solomon S.. Radiative effects of stratospheric seasonal cycles in the tropical upper troposphere and lower stratosphere[J]. Journal of Climate,2017-01-01,30(8)