Karakteristik Harian Dan Distribusi Musiman Dari Kompleks Konvektif Skala Meso Di Samudera Hindia Selama 10 Tahun (Periode 2000-2009)
| Main Author: | Trismidianto |
|---|---|
| Format: | Book |
| Bahasa: | ind |
| Terbitan: |
LAPAN
, 2014
|
| Subjects: | |
| Online Access: |
http://repository.lapan.go.id//index.php?p=show_detail&id=4445 http://repository.lapan.go.id//lib/phpthumb/phpThumb.php?src=../../images/docs/ssa_2013.PNG.PNG |
Daftar Isi:
- Effects of Mesoscale Convective Complexes (MCC) in Indian Ocean on convections over Sumatera Island have been investigated using Multi-functional Transport SATellite (MTSAT) infrared (IR1) imageries, Tropical Rainfall Measuring Mission (TRMM) rainfall data, and Cross-Calibrated Multi-Platform (CCMP) surface wind data of 10-year period (2000-2009). Occurrences of MCC were identified using an algorithm that combines criteria of cloud coverage, eccentricity, and cloud lifetime. Then, we do analyze of the spatial and temporal characteristics of daily and seasonal distribution of MCC in theIndian Ocean for 10 years. And also study the relationship MCC against convective index and surface wind anomalies. From this study, we found about a number of 553 MCC events have been identified over western Indian Ocean or there are about 55 MCC events per year in average. However, it is of interest to note MCC events tend to occur with significantly higher frequency during the monsoon transition season of March- April-May (MAM) period. Available data suggest that the life cycle of MCCs over western Indian Ocean is about 12 to 15 hours. The daily characteristics of MCC in the Indian Oceanshows that the initial phase of MCC common in 17:00 UTC, and the maximum phase of MCC dominant occurred at 00:00 UTC, while the dissipation phase of MCC dominant occurs at 12:00 UTC. And we also found a strong linkage between MCC with the convective index, especially in DJF and JJA seasons, and MCC affecting the convective clouds in the surrounding area for every season. Distribution of convective index during dissipation phase of MCC every season of DJF, MAM, JJA and SON shows the number of distribution of convective cloud over the Sumatra island, which had not previously seen in the maximum phase of MCC, it indicates that there are movement of the convective cloud when the dissipation phase of MCC.
- hal. 296-308