TRMM PR Observed Spatial Patterns of The Convective-Stratiform Rainfall Over Indonesia and Their Response to ENSO

3rd International Conference of Indonesia Society for Remote Sensing

地球科学;计算机科学

As-Syakur, Abd. Rahman^1

Marine Science Department, Faculty of Marine and Fisheries, Udayana University, Bukit Jimbaran, Bali

80361, Indonesia^1

关键词: Convective;    El Nino southern oscillation;    ENSO;    Indonesia;    Remote sensing data;    Seasonal differences;    Stratiform;    Tropical rainfall measuring missions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/165/1/012009/pdf
DOI  :  10.1088/1755-1315/165/1/012009

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

This study investigates the variability of convective and stratiform rainfall over Indonesia from 5 years (2004-2008) data of Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR). The remote sensing data was employed to analyze the seasonal means and seasonal differences between convective and stratiform rainfall values. In addition, the El Nino Southern Oscillation (ENSO) analysis impact on two rainfall types was also done with exemplification in 2006 and 2007 event. Two datasets were used namely the probability and the rainfall accumulation from both rainfall types. The results showed that the probability of Indonesian stratiform rainfall type was higher than convective rainfall type. In contrast, convective rainfall type more contributed to rainfall values. Spatial patterns of convective-stratiform rainfall types have different spreads. Generally, convective rainfall supplied more rainfall over the land, whereas stratiform rainfall supplied more rainfall over the sea, except in December-January-February (DJF) season. The ENSO impact was clearly seen during September-October-November (SON) season from both rainfall types over the south. Moreover, the stratiform rainfall type was more affected by ENSO during June-July-August (JJA) season.