SEMINAR: NHC Seminar - Dr. Bryan Stiles - Wednesday, Sep. 12, 2pm - Multiple Scatterometer Hurricane Winds

[Christopher Landsea <chris.landsea@noaa.gov>]

Hi folks,

NHC is hosting a seminar tomorrow (Wednesday):

"Multiple Scatterometer Hurricane Winds" (abstract below)

Dr. Bryan Stiles, NASA/JPL

Wednesday, September 12th
2-3 pm
NHC Seminar Room

All are welcome to attend.

Best regards,
chris
**********************************************************************
Chris Landsea
Science and Operations Officer
NOAA/NWS/National Hurricane Center
11691 S.W. 17th Street
Miami, Florida 33165-2149
Chris.Landsea@noaa.gov P:305-229-4446
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“In this age of smart phones, Twitter and a 24/7 news media,
every tropical wave rolling off faraway Africa is almost as closely
monitored as a Kardashian sister shopping on South Beach.”
 – Curtis Morgan, Miami Herald, 16 May 2012



Title: Multiple Scatterometer Hurricane Winds

Speaker: Dr. Bryan Stiles, NASA/JPL

Abstract

We have completed the first two years of a four-year study to optimize
tropical cyclone (TC) wind retrievals from scatterometers.
Scatterometer winds in TCs are corrupted by rain (especially in the
core of the storms) and use empirical retrieval methods that were not
optimized for high wind  conditions. To overcome these difficulties,
we utilize a neural network that we train to map scatterometer
backscatter and brightness temperature data to wind speeds. Ground
truth speeds from 2005 H*WIND data are utilized to train the network.

We have produced and validated a global ten-year (1999-2009) data set
of all storms observed by QuikSCAT of tropical storm force or greater.
We are presently extending the technique to include OceanSAT-2 (a
Ku-band scatterometer currently operated by the Indian Space Research
Organization). In the future, we also plan to produce optimized wind
speeds from the European Space Agency's C-band ASCAT scatterometer.

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