Japan Geoscience Union Meeting 2014

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International Session (Oral)

Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM06_30PM2] Study of coupling processes in Sun-Earth system with large radars and large-area observations

Wed. Apr 30, 2014 4:15 PM - 6:00 PM 312 (3F)

Convener:*Mamoru Yamamoto(Research Institute for Sustainable Humanosphere, Kyoto University), Yasunobu Ogawa(National Institute of Polar Research), Satonori Nozawa(Solar-Terrestrial Environment Laboratory), Hiroyuki Hashiguchi(Research Institute for Sustainable Humanosphere, Kyoto University), Chair:Hiroyuki Hashiguchi(Research Institute for Sustainable Humanosphere, Kyoto University)

5:15 PM - 5:30 PM

[PEM06-P06_PG] Microstructure of Precipitation over Indonesia from a Network of Parsivel disdrometers

3-min talk in an oral session

*Marzuki MARZUKI1, Hiroyuki HASHIGUCHI2, Masayuki YAMAMOTO2, Shuichi MORI3, Yukihiro TAKAHASHI4 (1.Department of Physics, Andalas University, Padang, Indonesia, 2.Research Institute for Sustainable Humanosphere (RISH) Kyoto University, Gokasho, Uji, Kyoto 611-001, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan, 4.Hokkaido University, Sapporo, Japan)

Keywords:Indonesia, Parsivel, Raindrop

Insight into the regional variability of raindrop size distribution (DSD), is of primary importance for estimation of rainfall using remote sensing techniques, cloud/precipitation microphysical processes and numerical weather modeling. In order to quantify the regional variability of the DSD over Indonesia, a network of 4 Parsivel disdrometers along equatorial Indonesia has been designed. The disdrometers were installed at Kototabang (KT; 100.32E, 0.20S), Pontianak (PT; 109.37E, 0.00S), Manado (MN; 124.92E, 1.55N) and Biak (BK; 136.10E, 1.18S). It was found that the DSD at PT has more large drops than at the other three sites. The DSDs at the four sites are influenced by both oceanic and continental systems, and majority of the data matched the maritime-like DSD that was reported in a previous study. Continental-like DSDs were somewhat dominant at PT and KT. The combination of World Wide Lightning Location Network, wind profiler and the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) allows a discussion on physical basis behind the regional variability of DSD over Indonesia.