Passive Microwave Brightness Temperatures as Proxies for Hailstorms

Author:

Cecil Daniel J.1

Affiliation:

1. Earth System Science Center, University of Alabama in Huntsville, Huntsville, Alabama

Abstract

Abstract The Tropical Rainfall Measuring Mission (TRMM) satellite has been used to infer distributions of intense thunderstorms. Besides the lightning measurements from TRMM, the radar reflectivities and passive microwave brightness temperatures have been used as proxies for convective vigor. This is based on large graupel or hail lofted by strong updrafts being the cause of high–radar reflectivity values aloft and extremely low brightness temperatures. This paper seeks to empirically confirm that extremely low brightness temperatures are often accompanied by large hail at the surface. The three frequencies examined (85, 37, and 19 GHz) all show an increasing likelihood of hail reports with decreasing brightness temperature. Quantification is limited by the sparsity of hail reports. Hail reports are common when brightness temperatures are below 70 K at 85 GHz, 180 K at 37 GHz, or 230 K at 19 GHz.

Publisher

American Meteorological Society

Subject

Atmospheric Science

Reference9 articles.

1. Three years of TRMM precipitation features. Part I: Radar, radiometric, and lightning characteristics.;Cecil;Mon. Wea. Rev.,2005

2. A comparison of severe thunderstorm warning verification statistics and population density within the NWS Atlanta county warning area.;Dobur,2005

3. The Tropical Rainfall Measuring Mission (TRMM) sensor package.;Kummerow;J. Atmos. Oceanic Technol.,1998

4. A cloud and precipitation feature database from 9 years of TRMM observations.;Liu;J. Appl. Meteor. Climatol.,2008

5. A census of precipitation features in the Tropics using TRMM: Radar, ice scattering, and lightning observations.;Nesbitt;J. Climate,2000

Cited by 74 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3