Accession Number:

ADA279482

Title:

Use of Wind Profiler Data in Short-Range Forecasting

Descriptive Note:

Scientific rept.

Corporate Author:

ATMOSPHERIC AND ENVIRONMENTAL RESEARCH INC CAMBRIDGE MA

Personal Author(s):

• Hamill, Thomas M.
• Nehrkorn, Thomas
• Knowlton, Lawrence W.

Report Date:

1994-01-15

Pagination or Media Count:

141.0

Abstract:

This report describes the results of the second year of a two-year study directed toward improving short-term forecasts and nowcasts through processing of satellite data year 1 and Doppler profiler data year 2. Data from the wind profiler demonstration network in the central US were used in a Barnes analysis scheme to produce hourly gridded wind fields and various derived kinematic quantities. The data were displayed in horizontal, vertical, and time- height cross sections. The utility of the profiler data, and profiler derived analyses, for short-term forecasting was demonstrated in a total of eight case studies, covering a wide range of atmospheric conditions. Among the derived quantities, the low-level vertical velocity derived from the horizontal convergence fields was found to be particularly useful for identifying areas of precipitation, while mid-level vorticity and vorticity advection was helpful in identifying quasi-geostrophic forcing mechanisms. Nowcasting, Wind Profiler, Objective analysis.

Descriptors:

• *WIND
• *METEOROLOGICAL DATA
• *WEATHER FORECASTING
• *METEOROLOGICAL SATELLITES
• VELOCITY
• ARTIFICIAL SATELLITES
• CONVERGENCE
• BAROMETRIC PRESSURE
• SEA LEVEL
• KANSAS
• FRONTS(METEOROLOGY)
• OKLAHOMA
• CONVECTION(ATMOSPHERIC)
• IOWA
• TEXAS
• HEIGHT
• ADVECTION
• ATMOSPHERIC PRECIPITATION
• STORMS
• CASE STUDIES
• COMPUTER PROGRAMS
• OCEAN SURFACE
• NETWORKS

Subject Categories:

• Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE