Abstract
In the summer of 1990 the Hawaiian Rainband Project (HaRP) employed a dual-Doppler radar system and the NCAR Electra aircraft to study the formation and development of precipitation in off-shore rainbands. These short-lived, shallow convective systems produce over 800 cm of precipitation annually on the sloping east shore of the island. Radar measurements have indicated surprisingly high reflectivity echoes near the updraft cores of cells present within these bands. peak reflectivities as high as 55-60 dBZ have been observed in very shallow (2-3 km) bands, and since the clouds contained no ice, these high values must be attributed to the rpeence of large raindrops. These reflectivities are equivalent to those observed in strong convective hailstorms over the central United States. Physically coherent descriptions of the evolution of precipitation in the rainband cells are being derived from reflectivity and kinematic data obtained from dual-Doppler radar measurements, and microphysical and air motion data measured by the research aircraft. We will examine the microphsical structure of a rainband cell with particularly high reflectivity and briefly compare this case with others observed both during HaRP and during a previous project conducted in 1985 at the same location.
Original language | English (US) |
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Pages | 273-275 |
Number of pages | 3 |
State | Published - 1993 |
Event | 26th International Conference on Radar Meteorology - Norman, OK, USA Duration: May 24 1993 → May 28 1993 |
Other
Other | 26th International Conference on Radar Meteorology |
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City | Norman, OK, USA |
Period | 5/24/93 → 5/28/93 |
ASJC Scopus subject areas
- General Engineering