Abstract
Abstract In the present study, hourly infrared (IR) brightness temperatures observed by the Geostationary Meteorological Satellite (GMS) over the region 20°–40°N, 95°–145°E in May–August 1998–2001 are used to compile a climatology of warm-season cloud/precipitation episodes over east Asia. With a goal to better understand the characteristics of warm-season convection and the behavior of these episodes, results are compared with those obtained in North America using radar-derived data. The convection in east Asia, similar to that in North America, is shown to also exhibit coherent patterns and characteristics of propagating events in the longitude–time (Hovmoller) space, with a preferred phase speed of ∼10–25 m s−1, considerably faster than warm-season synoptic-scale waves. Near the eastern edge of the Tibetan Plateau, convection was most active with a strong diurnal signal, peaking in late afternoon or early evening then propagating eastward. The zonal span and duration of episodes could reach 3000 km and...
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