A composite analysis of the Mesoscale Convective Complexes (MCCs) development over the Central Kalimantan and its relation with the propagation of the rainfall systems

3rd International Symposium on LAPAN-IPB Satellite For Food Security and Environmental Monitoring 2016

地球科学;轻工业;生态环境科学

Trismidianto^1,2 ; Yulihastin, E.^2 ; Satyawardhana, H.^2 ; Ishida, S.^1

Meteorological Laboratory, Graduate School of Science and Technology, Hirosaki University, Hirosaki, Japan^1

Center for Atmospheric Science and Technology, National Institute of Aeronautics and Space, Jakarta, Indonesia^2

关键词: Composite analysis;    Convective systems;    Infrared satellites;    Lower atmosphere;    Lower troposphere;    Mesoscale convective complexes;    Moisture convergence;    Rainfall systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/54/1/012036/pdf
DOI  :  10.1088/1755-1315/54/1/012036

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The composite analysis for 45-cases of the MCC which identified by using infrared satellite imagery over the Central Kalimantan (110° - 116°E, 4°S - 1°N) has been observed. The data used is a combination of satellite data and reanalysis data. This study reported that the MCCs develops triggered by the orographic convective that helped by the convergent surface wind flow through interaction with the sea breeze in the afternoon until midnight and dissipated in the morning. The new convective systems are generated by the divergent outflow of the cold pool, in conjunction with the morning land breeze during MCCs mature. After dissipated, the new convective systems induce the land convection over the Java Island that became heavy rainfall. The initial and mature region are characterized by weak low-level convergence and upper-level divergence, but the low-level divergence begin appear during mature. The MCC develops largely driven by MCC-scale moisture convergence in the lower troposphere and cold core structure in the lower level. The weak surface divergence and upper-level divergence, warm advection in the lower atmosphere are dissipation characteristics. MCCs develop due to low-level cold advection and temperature and separated when dissipated that indicate the existence of the new convective systems propagation.