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Simulation of the Impact of New Aircraft- and Satellite-based Ocean Surface Wind Measurements on Estimates of Hurricane IntensityThe Hurricane Imaging Radiometer (HIRAD) is a new airborne microwave remote sensor currently under development to enhance real-time hurricane ocean surface wind observations. HIRAD builds on the capabilities of the Stepped Frequency Microwave Radiometer (SFMR), which now operates on NOAA P-3, G-4, and AFRC C-130 aircraft. Unlike the SFMR, which measures wind speed and rain rate along the ground track directly beneath the aircraft, HIRAD will provide images of the surface wind and rain field over a wide swath (approximately 3 times the aircraft altitude). To demonstrate potential improvement in the measurement of peak hurricane winds, we present a set of Observing System Simulation Experiments (OSSEs) in which measurements from the new instrument as well as those from existing platforms (air, surface, and space-based) are simulated from the output of a high-resolution (approximately 1.7 km) numerical model. Simulated retrieval errors due to both instrument noise as well as model function accuracy are considered over the expected range of incidence angles, wind speeds and rain rates. Based on numerous simulated flight patterns and data source combinations, statistics are developed to describe relationships between the observed and true (from the model s perspective) peak wind speed. These results have implications for improving the estimation of hurricane intensity (as defined by the peak sustained wind anywhere in the storm), which may often go un-observed due to sampling limitations.
Document ID
20090025883
Document Type
Conference Paper
Authors
Uhlhorn, Eric (National Oceanic and Atmospheric Administration Miami, FL, United States)
Atlas, Robert (National Oceanic and Atmospheric Administration Miami, FL, United States)
Black, Peter (Science Applications International Corp. United States)
Buckley, Courtney (NASA Marshall Space Flight Center Huntsville, AL, United States)
Chen, Shuyi (Miami Univ. Miami, FL, United States)
El-Nimri, Salem (University of Central Florida Orlando, FL, United States)
Hood, Robbie (National Oceanic and Atmospheric Administration United States)
Johnson, James (University of Central Florida Orlando, FL, United States)
Jones, Linwood (University of Central Florida Orlando, FL, United States)
Miller, Timothy (NASA Marshall Space Flight Center Huntsville, AL, United States)
Ruf, Chris (Michigan Univ. MI, United States)
Date Acquired
August 24, 2013
Publication Date
March 2, 2009
Subject Category
Meteorology and Climatology
Report/Patent Number
M09-0340
Meeting Information
HIRAD OSSE: Interdepartmental Hurricane Conference 2009/The Office of the Federal Coordinator for Meteorological Services and Supporting Research(Saint Petersburg, FL)
Distribution Limits
Public
Copyright
Other