THORCloud Thickness - PowerPoint PPT Presentation
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Title: THORCloud Thickness
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THORCloud Thickness from Offbeam Lidar Returns
Robert F. Cahalan
John Kolasinski and Ken Yetzer
Matthew McGill
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Problem addressed by THOR
Except for their edge, clouds with t gt 2 are
outside the reach of conventional, narrow
field-of-view lidars
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Main idea of THOR
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Sample THOR data
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THOR instrument in NASA P-3B aircraft
- Specifications
- 1000 pulse per second
- 540 nm wavelength (green light)
- 30 m range-resolution
- 0.5 second time-resolution ( 80 m)
- 8 fields of views 3, 1.5, 0.75,
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THOR validation campaign in March 2002, ARM SGP
site in Oklahoma
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Cloud thickness retrieval results
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THOR plans for near future
- Retrievals of cloud microphysics and internal
structure - Retrievals for snow and sea ice
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Time-sequence of measurements
THOR
Balloon
ARM MPL
ARM MMCR
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