DERIVED MOTION FIELDS from the GOES SATELLITES COMET raquo; HoeGOES卫星彗星”衍生的运动领域；家.pptVIP

March 9, 1999 Comet Class: SatMet 99-1 DERIVED MOTION FIELDS from the GOES SATELLITES Jaime Daniels NOAA/NESDIS Office of Research and Applications Forecast Products Development Team and Donald G. Gray NOAA/NESDIS GOES Products Manager Office of Systems Development Satellite Derived Motion Fields: TOPICS Philosophy Review of GOES visible, IR, WV channels Basic methodology GOES-Next optimized data processing strategies GOES wind products - What’s new ? Verification Satellite Derived Motion Fields: TOPICS cont’d Current and new/planned applications Summary Product availability and recommended reading Discussion/questions Satellite Derived Motion Fields: PHILOSOPHY Clouds are “passive” tracers of winds at a single level use infrared and visible radiances Water vapor features (ie., moisture gradients are “passive” tracers of winds) both in clear air and cloudy conditions use water vapor infrared radiances We can properly assign height of tracer Satellite Derived Motion Fields: GOES Visible, IR, WV Channels Imager Water vapor channel (6.7um) Band 3 Longwave IR window chan. (10.7um) Band 4 Visible Channel (0.65um) Band 1 Sounder Water vapor channel (7.3um) Band 10 Water vapor channel (7.0um) Band 11 Satellite Derived Motion Fields: BASIC METHODOLOGY Image acquisition Automated registration of imagery Target selection process Height assignment of targets Target tracking Quality control (Autoeditor) Satellite Derived Motion Fields:  Image Acquisition Select 3 consecutive images in time Which channels are selected is a function of which wind product (cloud-drift, water vapor, visible) is to be generated Extended Northern Hemisphere Southern Hemisphere Coverage Diagrams Satellite Derived Motion Fields: Auto-registration of Imagery Registration is a measure of consistency of navigation between successive images Landmark features (ie., coastlines) must remain stationary from image to image Satellite-derived winds are much