气候变化领域集成服务门户(CCPortal): Quantifying the Radiative Impact of Clouds on Tropopause Layer Cooling in Tropical Cyclones

CCPortal

DOI	10.1175/JCLI-D-19-0813.1
	Quantifying the Radiative Impact of Clouds on Tropopause Layer Cooling in Tropical Cyclones
	Rivoire L.; Birner T.; Knaff J.A.; Tourville N.
发表日期	2020
ISSN	0894-8755
起始页码	6361
结束页码	6376
卷号	33 期号:15
英文摘要	A ubiquitous cold signal near the tropopause, here called "tropopause layer cooling" (TLC), has been documented in deep convective regions such as tropical cyclones (TCs). Temperature retrievals from the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) reveal cooling of order 0.1-1Kday21 on spatial scales of order 1000 km above TCs. Data from the Cloud Profiling Radar (onboard CloudSat) and from the Cloud-Aerosol Lidar with Orthogonal Polarization [onboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO)] are used to analyze cloud distributions associated with TCs. Evidence is found that convective clouds within TCs reach the upper part of the tropical tropopause layer (TTL) more frequently than do convective clouds outside TCs, raising the possibility that convective clouds within TCs and associated cirrus clouds modulate TLC. The contribution of clouds to radiative heating rates is then quantified using the CloudSat and CALIPSO datasets: In the lower TTL (below the tropopause), clouds produce longwave cooling of order 0.1-1Kday21 inside the TC main convective region, and longwave warming of order 0.01-0.1Kday21 outside; in the upper TTL (near and above the tropopause), clouds produce longwave cooling of the same order as TLC inside the TC main convective region, and one order of magnitude smaller outside. Considering that clouds also produce shortwave warming, cloud radiative effects are suggested to explain only modest amounts of TLC while other processes must provide the remaining cooling. © 2020 American Meteorological Society. All rights reserved.
英文关键词	Aerosols; Cosmology; Hurricanes; Ionosphere; Optical radar; Storms; Transistor transistor logic circuits; Tropics; Cloud distributions; Cloud Profiling Radars; Cloud radiative effects; Cloud-aerosol lidar and infrared pathfinder satellite observations; Cloud-aerosol lidar with orthogonal polarizations; Constellation observing system for meteorology , ionosphere , and climates; Temperature retrieval; Tropical tropopause layers; Clouds; CALIPSO; cloud; CloudSat; convective cloud; cooling; COSMIC; radiative transfer; tropical cyclone; tropopause
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171197
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Meteorological Institute, Ludwig-Maximilians-Universitâ,at Mâ,unchen, Munich, Germany; NOAA/Center for Satellite Applications and Research, Fort Collins, CO, United States; Cooperative Institute for Research in Atmosphere, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Rivoire L.,Birner T.,Knaff J.A.,et al. Quantifying the Radiative Impact of Clouds on Tropopause Layer Cooling in Tropical Cyclones[J],2020,33(15).
APA	Rivoire L.,Birner T.,Knaff J.A.,&Tourville N..(2020).Quantifying the Radiative Impact of Clouds on Tropopause Layer Cooling in Tropical Cyclones.Journal of Climate,33(15).
MLA	Rivoire L.,et al."Quantifying the Radiative Impact of Clouds on Tropopause Layer Cooling in Tropical Cyclones".Journal of Climate 33.15(2020).