quikscat and windsat underflights with todwl g. d. emmitt, c. o'handley and s. greco simpson...
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QuikScat and WindSat underflights with TODWL
G. D. Emmitt, C. O'Handley and S. Greco
Simpson Weather Associates
Lidar Working Group Meeting
Snowmass
July 17 – 20 2007
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Objectives
• Investigate the influence of OLEs and near surface jets on OVW retrievals and air-sea flux parameterizations
• Investigate the accuracy of PBL wind profiles derived for OVWs
• Obtain high spatially resolved wind profiles within footprint and processing “pixels” of both a scatterometer (QuikScat) and a polarmetric radiometers (WindSat)
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April Underflights with TODWL and the STV
• Two underflights – 5:30 pm PDT April16, 2007– 6:07 pm PDT April 18, 2007
• Off coast near and over Monterey Bay
• Flight altitude of 1900 m
• Conical scanning down
• 500 m repeat
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Buoy
CoastlineNear Marina
Speed m/s)
TODWL underflight 18 April 6:07 pm PSTMonterey Bay, California
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0 4 8 12 16 20WIND SPEED (M/S)
0
400
800
1200
1600
2000
HEIGHT (M)
O RDE R (NW TO S E):
B lack (solid), Black (d ash), B lue (so lid ),Blue (da sh),G re en (solid), Gre en (d ash ),
V iolet (so lid ), Vio le t (da sh),Re d (solid ), Green (da sh)
0 4 8 12 16 20WIND SPEED (M/S)
0
400
800
1200
1600
2000
HEIGHT (M)
O RI GINAL FIT (NO THREADING)
O RDE R (NW TO S E):B lack (solid), Black (d ash),
B lue (so lid ),Blue (da sh),G re en (solid), Gre en (d ash ),V iolet (so lid ), Vio le t (da sh),
Re d (solid ), Green (da sh)
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6:30 am NNW ( 336 deg ) 8.7 kts
6:20 am NNW ( 332 deg ) 8.9 kts
6:10 am NNW ( 333 deg ) 8.9 kts
6:00 am NNW ( 335 deg ) 9.3 kts
NOAA Buoy Winds18 April 2007
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QuikScat WindSat
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Plans
• Emmitt, Long and Velden proposal– Synergisms between space-based DWL and
OVW technologies– Synergisms between space-based DWL and
CMV.
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Acknowledgements
• Funding for TODWL underflights from NPOESS (Steve Mango)
• Ultra High Resolution (UHR) processing of QuikScat data done by Dave Long (BYU)