Abstract

AbstractPadang city has an equatorial rain pattern with high convective cloud activity. Extreme rainfall often occurs in this region, which impacts human life in material losses and loss of life. Himarawi-8 satellite observation allows detecting cloud growth causing extreme rain faster than using radar or surface rain observations. This study observed the extreme rain phenomenon in Padang city on September 9, 2020, using the Himawari-8 satellite data. This extreme rain had rainfall intensity above 100 mm/day, which caused floods and landslides in some areas in the city. Convective clouds that cause extreme rain are detected using brightness temperature data from the IR1 band. Then brightness temperature difference method is used to provide complete information about cloud particle types. Himawari-8 satellite data can show convective clouds with cloud top temperatures experiencing significant changes, with the lowest cloud top temperatures reaching 200 K. In addition, clouds with strong updrafts and ice particles in these clouds were also obtained. The brightness temperature difference value can provide a clear picture of convective clouds so that observations of clouds that produce extreme rain on September 9, 2020, are well observed. The results were also compared with Integrated Multi-satellitE Retrievals for GPM (IMERG) data.KeywordsBrightness temperature differenceConvective cloudsExtreme rainHimawari-8Padang

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