抄録
Chao Phraya river basin is one of the largest basins in the Indochina Peninsula where is located at the South East Asian monsoon region. This study focuses on the diurnal patterns of several cloud types in the rainy season especially during June to August. We used MTSAT (Multi-functional Transport Satellite) Infra-red information from which we classified the clouds into 7 types and then analyzed diurnal characteristics of each cloud type especially in the years 2010 and 2011. 2010 was a drought year and clouds appeared earlier than in the climatology (1996-2011) and 2011, on the other hand, was a flood year and clouds appeared approximately 1 hour later than in the climatology. We obtained results which showed all types of clouds had each diurnal pattern of appearance. Furthermore, those patterns were similar between 2010 and 2011, however they shifted a few hours earlier in 2011 than in 2010.
