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

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)

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

Buoy

CoastlineNear Marina

Speed m/s)

TODWL underflight 18 April 6:07 pm PSTMonterey Bay, California

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)

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

QuikScat WindSat

Plans

• Emmitt, Long and Velden proposal– Synergisms between space-based DWL and

OVW technologies– Synergisms between space-based DWL and

CMV.

Acknowledgements

• Funding for TODWL underflights from NPOESS (Steve Mango)

• Ultra High Resolution (UHR) processing of QuikScat data done by Dave Long (BYU)