STEREO CLOUD TOP HEIGHT AND ATMOSPHERIC MOTION VECTORS
EXTRACTION FROM GOES IMAGES
Feng Lu
National Satellite Meteorological Center, Beijing, 100081,CHINA
ABSTRACT
It is well recognized that height assignment is one of the major error sources to the NWP models. In
this research, the biases for Stereo Cloud Top Height (CTH) assignment are simulated for the current
operational geostationary satellite constellation. According to the simulation, a GEOs pair with
60°distance could give the best cloud top height result. Under such configuration, two GEOs could
retrieve the cloud height higher than 2.0Km in all satellite overlapped regions.
In addition, a case study based on GOES-10/12 images is shown to demonstrate the stereo CTH
assignment and AMW extraction techniques. The algorithms have been optimized for searching
distance, target box size and computing time.
Validation of the AMW results in visible(0.64μm) channel, shortwave infrared (3.9 μm) and longwave infrared windows (10.7 μm) channel will also be shown.