Satellite-Derived Moisture-Bogusing Profiles for the Northwest Pacific Ocean
PACIFIC MISSILE TEST CENTER POINT MUGU CA
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Since the early 1970s the National Meteorological Center has attempted to improve its initialization of moisture in numerical weather prediction models by using a technique called moisture bogusing. The technique involves including pre-computed vertical profiles of relative humidity in model initialization over ocean areas normally devoid of in situ observations. Each moisture profile is intended to be representative of a particular meteorological condition identifiable by subjective satellite image analysis. This report represents a set of 12 vertical profiles of relative humidity versus barometric pressure for use in satellite bogusing of moisture into numerical weather prediction initial analysis for the Northwest Pacific Ocean region. The profiles are based on a subjective satellite image cloud classification scheme applied to a concurrent set of satellite images and upper-air soundings taken from ships. Vertical relative humidity profile composites and statistical significance tests are presented for each category.