METEOSAT water-vapor (5.7–7.1 μm) images are used to illustrate the formation of a low-latitude, upper-level vortex over NE Brazil in February 1979. Winds derived from cloud motions over three consecutive half-hourly METEOSAT infrared (10.5–12.5 μm) images show that the basic cause of the development is the disruption of an upper trough penetrating into low latitudes from the north. Cross-equatorial flow is set up and a cyclonic circulation appears in the southern hemisphere.
Research Article| 1 July 1982
METEOSAT Water Vapor Channel and a Low-Latitude Vortex
Bull. Amer. Meteor. Soc. (1982) 63 (7): 747–750.
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Davis, N. E., 1982: METEOSAT Water Vapor Channel and a Low-Latitude Vortex. Bull. Amer. Meteor. Soc., 63, 747–750, https://doi.org/10.1175/1520-0477-63.7.747.
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