Characteristic of rain rate associated with floods during the 2021 rainy season around Jakarta and Bekasi River
Characteristic of rain rate associated with floods during the 2021 rainy season around Jakarta and Bekasi River
复制标题
2021年雨季雅加达和勿加泗河周边与洪水相关的降雨率特征
DOI：
10.1088/1755-1315/1109/1/012010
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
and Syamsudi
中科院分区：
文献类型：
--
作者：
Lestari;S.;Saptan;E. G. A.;Sulistyowati;R. Belgaman;H. A.;Meliani;F.;Winarno;Hapsari;R. I.;Cahyaningtiyas;I. F.;Pianto;T. A.;Akbar;H. I.;Nurdiansyah;Avianti;E.;Eugenie;A.;Grace;T.;Amaliyah;R.;Djoharin;M.;Mori;S.;and Syamsudi
雅加达特大城市遭遇了与高强度但持续时间短的降雨或低强度但持续时间长的降雨相关的严重洪水。于2021年2月4日雨季，雅加达因降雨强度增加而被淹没。然而，人们对可能导致这场暴雨的气象因素知之甚少。在这项研究中，我们使用了6分钟的X波段多普勒雷达，一小时的卫星和再分析数据，以了解降雨的空间分布，并探讨可能影响雅加达和贝卡西河降水增强的背景条件。与以前的研究不同，我们发现，在雅加达，高降雨量的地区更广泛，更远的东北海洋，强度超过4.5毫米h-1。内陆地区在下午08 - 10 Z（3.00 - 5.00 PM）左右开始出现高强度降雨。背景情况显示，一股强劲的西风穿过爪哇岛，这可能会引发该地区降雨的发展。
The Megacity Jakarta has encountered serious floods associated with high intensity but a short-duration rainfall or low intensity with a long-duration rainfall. During the rainy season, on 4 Feb 2021, Jakarta was inundated as rainfall intensity increased. However, little is known about the meteorological factors that might contribute to this heavy rainfall. In this study, we used the 6-min X-Band Doppler radar, one-hour satellite and reanalysis data to understand the spatial distribution of rainfall and explore the background conditions that might influence the enhanced rainfall over Jakarta and Bekasi River. Other than previous studies, we found that over Jakarta, the areas receiving high rainfall are more widespread and further to the northeast ocean with an intensity of above 4.5 mm h-1. High intensity of rainfall starts to develop in the afternoon over the inland areas at around 08-10Z (3.00-5.00 PM). Background condition shows a strong westerly wind speed crossing over Java Island, and this might initiate the development of rainfall over the region.