Hurricane Debby - Analysis and numerical forecasts using VAS soundingsThe utility of VISSR Atmospheric Sounder (VAS) temperature and moisture soundings in defining the storm and its surroundings at subsynoptic scales has been examined using a numerical analysis and prognosis system. In particular, VAS temperature and moisture soundings and cloud and water vapor motion winds have been used in numerical analysis for three time periods. It is shown that the VAS temperature and moisture data which specify temperature and moisture well in cloud free regions are complemented by cloud and water vapor wind data which provide horizontal gradient information for the cloudy areas. The loss of analysis integrity due to the reduction of VAS data density in the cloudy regions associated with synoptic activity is ameliorated by using cloud and water vapor motion winds. The improvement in numerical forecasts resulting from the addition of these data to the numerical data base is also recorded.
Document ID
19840056735
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Le Marshall, J. F. (Cooperative Institute for Meteorological Satellite Studies Madison, WI, United States)
Smith, W. L. (National Oceanic and Atmospheric Administration Madison, WI, United States)
Callan, G. M. (NOAA, National Environmental Satellite, Data and Information Service, Madison WI, United States)