DOI: 10.1002/2016GL070622
论文题名: Evolution of the upper-level thermal structure in tropical cyclones
作者: Rivoire L. ; Birner T. ; Knaff J.A.
刊名: Geophysical Research Letters
ISSN: 0094-8563
EISSN: 1944-8294
出版年: 2016
卷: 43, 期: 19 起始页码: 10530
结束页码: 10537
语种: 英语
英文关键词: cooling
; evolution
; temperature
; tropical cyclones
; upper troposphere lower stratosphere
; vertical structure
Scopus关键词: Clouds
; Cooling
; Cosmology
; Hurricanes
; Ionosphere
; Linear matrix inequalities
; Remote sensing
; Sounding apparatus
; Temperature
; Thermal conductivity
; Tropics
; Troposphere
; Upper atmosphere
; Advanced Microwave Sounding Unit-A
; Constellation observing system for meteorology , ionosphere , and climates
; Evolution
; Lower stratosphere
; Remote sensing platforms
; Temperature retrieval
; Tropical cyclone
; Vertical structures
; Storms
英文摘要: Tropical cyclones (TCs) are associated with tropopause-level cooling above tropospheric warming. We collect temperature retrievals from 2007 to 2014 near worldwide hurricane-strength TCs using three remote sensing platforms: the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC), the Advanced Microwave Sounding Unit-A (AMSU-A), and geostationary infrared (IR) imagery. These retrievals are composited about the lifetime maximum intensity (LMI) to examine the evolution of the fine-scale temperature structure within TCs. The convective structure evolves highly asymmetrically about LMI, while intensity evolution shows a much weaker degree of asymmetry. Relative to the far-field structure, tropopause-level cooling occurs before a tropospheric warm core is established. We speculate that the associated convective destabilization exerts a positive feedback on TC development by increasing the depth of existing convection. Tropopause-level cold anomalies move away from the storm after LMI, potentially increasing the near-surface horizontal pressure gradient toward the storm center and increasing the maximum winds. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992365185&doi=10.1002%2f2016GL070622&partnerID=40&md5=712410aee24373c13db54b811513650e
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9526
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Rivoire L.,Birner T.,Knaff J.A.. Evolution of the upper-level thermal structure in tropical cyclones[J]. Geophysical Research Letters,2016-01-01,43(19).