Artículos de revistas
The first case study of a thunderstorm in South Africa based on dual- Doppler radar observations
Fecha
1992-12-01Registro en:
South African Journal of Science, v. 88, n. 9-10, p. 516-524, 1992.
0038-2353
2-s2.0-0027037385
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
On 27 March 1991, an isolated thunderstorm passed between the two CSIR Doppler radars, spaced about 45km apart. Both radars simultaneously recorded Doppler data of the storm, and a detailed case study during an 11-min period is presented. Air motions synthesized from these data provide the first three-dimensional display of Doppler-derived wind fields within a multicell storm on the Transvaal Highveld. Regions of high divergence values (10 -2s -1) at low levels were found mostly in close proximity to reflectivity maxima (45-51 dBZ), which is consistent with findings from North America, that gravitational loading by the precipitation plays a key role in the initiation and maintenance of downdraughts. -from Authors