![]() ![]() The highly organized band-associated circulations suggest the importance of their inclusion in diagnostic calculations. The frontogenesis calculation gives approximately a 2-4 h doubling time of the horizontal potential temperature gradient associated with the warm front, at mid-levels. Some diagnostic calculations of ageostrophic winds, frontogenesis and vorticity production are presented. The dominant precipitation bands were oriented transverse to the mid-level winds, and they were spaced 110 km apart. The precipitation occurring ahead of the surface warm front was banded. It is also important to remember that we have a very powerful zoom lens on the rooftop camera that allows us to make storm clouds that are 15 miles away look. Near the surface additional circulations were produced by pressure perturbations resulting from cooling associated with melting snow. The paper presents a case study of the structure of a warm frontal region as deduced from Doppler radar observations. ![]() The precipitation bands extended from this layer down to the surface. ![]() PRECIPITATION AND AIRFLOW STRUCTURE IN THE VICINITY OF FRONT The airborne Doppler radar data processing in this study is following the procedures outlined by Yu et al. The study demonstrates the potential of Doppler radar to provide additional information to forecasters on ne spatial and temporal characteristics of frontal cyclogenesis. It is suggested that these bands were formed by highly organized vertical circulations in a 2.5 km thick layer just above the warm frontal zone. outline (120 X 120 km2) marks dual-Doppler analysis domain. A sequence of Doppler radar observations obtained during the PADRE project is used to identify a region of dry-air intrusion in a frontal system approaching the Alps. The precipitation occurring ahead of the surface warm front was banded. Doppler radar study of a warm frontal region The paper presents a case study of the structure of a warm frontal region as deduced from Doppler radar observations. ![]()
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