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Simulation of the Impact of New Aircraft- and Satellite-Based Ocean Surface Wind Measurements on H*Wind Analyses and Numerical ForecastsThe Hurricane Imaging Radiometer (HIRAD) is a new airborne microwave remote sensor for hurricane observations that is currently under development by NASA Marshall Space Flight Center, NOAA Hurricane Research Division, the University of Central Florida and the University of Michigan. HIRAD is being designed to enhance the realtime airborne ocean surface winds observation capabilities of NOAA and USAF Weather Squadron hurricane hunter aircraft using the operational airborne Stepped Frequency Microwave Radiometer (SFMR). Unlike 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 (~ 3 x the aircraft altitude). The present paper describes a set of Observing System Simulation Experiments (OSSEs) in which measurements from the new instrument as well as those from existing instruments (air, surface, and space-based) are simulated from the output of a detailed numerical model, and those results are used to construct H*Wind analyses. The H*Wind analysis, a product of the Hurricane Research Division of NOAA s Atlantic Oceanographic and Meteorological Laboratory, brings together wind measurements from a variety of observation platforms into an objective analysis of the distribution of wind speeds in a tropical cyclone. This product is designed to improve understanding of the extent and strength of the wind field, and to improve the assessment of hurricane intensity. See http://www.aoml.noaa.gov/hrd/data_sub/wind.html. Evaluations will be presented on the impact of the HIRAD instrument on H*Wind analyses, both in terms of adding it to the full suite of current measurements, as well as using it to replace instrument(s) that may not be functioning at the future time the HIRAD instrument is implemented. Also shown will be preliminary results of numerical weather prediction OSSEs in which the impact of the addition of HIRAD observations to the initial state on numerical forecasts of the hurricane intensity and structure is assessed.
Document ID
20090017887
Document Type
Conference Paper
Authors
Miller, Timothy (NASA Marshall Space Flight Center Huntsville, AL, United States)
Atlas, Robert (NASA Marshall Space Flight Center Huntsville, AL, United States)
Black, Peter (NASA Marshall Space Flight Center Huntsville, AL, United States)
Chen, Shuyi (NASA Marshall Space Flight Center Huntsville, AL, United States)
Hood, Robbie (NASA Marshall Space Flight Center Huntsville, AL, United States)
Johnson, James (NASA Marshall Space Flight Center Huntsville, AL, United States)
Jones, Linwood (NASA Marshall Space Flight Center Huntsville, AL, United States)
Ruf, Chris (NASA Marshall Space Flight Center Huntsville, AL, United States)
Uhlhorn, Eric (NASA Marshall Space Flight Center Huntsville, AL, United States)
Krishnamurti, T. N. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Albers, Cerese (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
January 11, 2009
Subject Category
Meteorology and Climatology
Report/Patent Number
MSFC-2191
Meeting Information
13th Conference on Integrated Observing and Assimilation Systems for Atmosphere, Oceans, and Land Surface (IOAS-AOLS)(Phoenix, AZ)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.