Ground-based Stereo Hemispherical Photography
Two or more fish-eye digital cameras will be used to acquire
stereo measurements of cirrus and contrail cloud base for
comparison with satellite overpasses. In addition to cloud
base height, these cameras will also be used to assess cloud
amount and type derived from satellite sensors as well
as cloud drift wind effect.
Airborne Lidar Profilometers
Underflight campaigns involving stereo 3-line imagers and laser profilometers
will be used to compare cloud-top heights against satellite-derived estimates.
Six 94Ghz radars around the world will be used to acquire long time series
of cloud-top heights contemporaneous with satellite overpasses, including
specific flight campaigns over Chilbolton, UK where precipitation and
Doppler radars will be used to monitor meteorological conditions.
A comparative study of ATSR2 Stereo, ATSR2 Brightness-Temperature and MOS
O-band derived cloud-top heights over Chilbolton is on-going. The latest
results of our analysis are here.
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Last modified: 12th October 2000