Comparison of various CTH products Chilbolton and local area.
02/03/99

Statistics given are for a bounding box ranging from (51.13N,-1.453E) to (51.17N,-1.413E), centred on (51.15N,-1.433E). This typically encompasses ~12 pixels around Chilbolton in ATSR-2 scenes. Bad matches are ignored. If given as 0 then no good cloudy pixels were found in the search radius.

In colour CTH browse products, grey areas are unmatched and white areas are cloud free.

Areal cloud-top height comparisons


Intercomparison of ATSR-2 stereo
ATSR-2 BT-CTH and MOS CTH

ATSR-2 11um Stereo (black)
and ATSR-2 BT-CTH (red)
v Temperature

ATSR-2 11um Stereo
v ATSR-2 BT-CTH
overlap

ATSR-2 11um Stereo
v MOS CTH
overlap

MOS O-Band versus
ATSR-2 BT-CTH
overlap
Cloud-top height browse products


ATSR-2 0.65 um
Stereo CTH

ATSR-2 1.6 um
Stereo CTH

ATSR-2 11.0 um
Stereo CTH

ATSR-2 11.0 um
BT-CTH

Reprojected
MOS O2A CTH
Statistics over Chilbolton
Mean = 5.7
Stddev = 0.32
Min = 5.5
Max = 6.3
Mean = 6.3
Stddev = 0.0092
Min = 6.3
Max = 6.4
Mean = 10.3
Stddev = 0.016
Min = 10.3
Max = 10.3
Mean = 4.9
Stddev = 0.36
Min = 4.4
Max = 5.6
Mean = 0.0
Stddev = 0
Min = 0.0
Max = 0.0
Ground-based data
Browse data from Chilbolton Radar Facility used for ECMWF objective analysis of ATSR-2 BT-CHT product. Courtesy of Robin Hogan, Radar Group, Meteorology, Reading University

Last updated: Wed Feb 21 15:33:26 GMT 2001