DOI: 10.1002/jgrd.50698
论文题名: A validation study for GPS radio occultation data with moist thermodynamic structure of tropical cyclones
作者: Vergados P. ; Mannucci A.J. ; Su H.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 16 起始页码: 9401
结束页码: 9413
语种: 英语
Scopus关键词: Ionosphere
; Precipitation (meteorology)
; Water vapor
; Weather forecasting
; Atmospheric infrared sounders
; Challenging minisatellite payloads
; Constellation observing system for meteorology , ionosphere , and climates
; Distribution of water
; European centre for medium-range weather forecasts
; GPS radio occultations
; Microwave observations
; Thermodynamic structures
; Hurricanes
; AIRS
; altitude
; cloud cover
; COSMIC
; GPS
; humidity
; hurricane
; inflow
; model validation
; precipitation intensity
; satellite data
; thermodynamics
; water vapor
; weather forecasting
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: We exploit the cloud-penetrating capability and insensitivity to precipitation of the Global Positioning System radio occultation (GPSRO) technique to study the humidity environment of tropical cyclones (TCs). We focus in regions within and around the vicinity of TCs' eye, where infrared and microwave observations are difficult to acquire due to cloudiness and heavy precipitation. We use data from the National Hurricane Center TC Best Tracks to identify the location of North Atlantic TCs. The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) Data Analysis and Archive Center provides concurrent refractivity, temperature, and humidity measurements from the Challenging Minisatellite Payload and COSMIC missions and the European Centre for Medium-Range Weather Forecasts (ECMWF). The distribution of GPSRO-derived humidity profiles as functions of altitude and distance from the storms' center identifies a pronounced low-level inflow, characteristic of mature TCs, at distances between 50 and 90 km, which coincide with the area where the eyewall of TCs forms. We also capture wavelike structures resembling spiral rainbands beyond the eyewall. The distribution of water vapor as functions of altitude and TC intensity shows a decrease at all altitudes when a tropical system matures from a tropical depression to a Category 1 (Cat 1) hurricane. The water vapor gradually increases from Cat 2 to Cat 5 hurricanes - a result that is also identified in ECMWF data sets and Atmospheric Infrared Sounder observations. We conclude that GPSRO data can contribute significantly to the understanding and modeling of the vertical structures of TCs. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63396
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States
Recommended Citation:
Vergados P.,Mannucci A.J.,Su H.. A validation study for GPS radio occultation data with moist thermodynamic structure of tropical cyclones[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)