TY - JOUR
T1 - Synoptic conditions triggering extreme flood events in Bintan Island in early January 2021
AU - Narulita, Ida
AU - Fajary, Faiz R.
AU - Abdillah, Muhammad Rais
AU - Djuwansah, M. R.
AU - Sutjiningsih, Dwita
AU - Kusratmoko, Eko
AU - Moersidik, Setyo S.
N1 - Funding Information:
The study was funded by the Demand-Driven Research Fund of the COREMAP Program of the National Research and Innovation Agency (Grant Number: 4/III/HK/2022; B-4957/IPK-2/KP.06/III/2019), and partially funded by the University of Indonesia for the research funding program research assignment agreement for the Doctoral Dissertation Program (Hibah PDD) 2022-2023 of the Ministry of Education, Culture, Research, and Technology (Grant number: 091/E5/PG.02.00.PT/2022 and 172/PKS/WRIII-DRP/UI/2022; 021/E5/PG.02.00.PT/2023 and 010/PKS/WRIII-DRP/UI/2023). This study is also partly supported by the Institute for Research and Community Services of Institut Teknologi Bandung (LPPM ITB) and PPMI Riset Kolaboratif ITB. We would also like to thank the Meteorological, Climatological, and Geophysical Agency (BMKG), BPDAS Sei Jang Duriangkang, PDAM Tirta Kepri, BPBD and BAPPEDA of Riau Islands province, Bintan Regency for data support. The authors extend thanks to the anonymous reviewers for their constructive suggestions.
Funding Information:
The study was funded by the Demand-Driven Research Fund of the COREMAP Program of the National Research and Innovation Agency (Grant Number: 4/III/HK/2022; B-4957/IPK-2/KP.06/III/2019), and partially funded by the University of Indonesia for the research funding program research assignment agreement for the Doctoral Dissertation Program (Hibah PDD) 2022-2023 of the Ministry of Education, Culture, Research, and Technology (Grant number: 091/E5/PG.02.00.PT/2022 and 172/PKS/WRIII-DRP/UI/2022; 021/E5/PG.02.00.PT/2023 and 010/PKS/WRIII-DRP/UI/2023). This study is also partly supported by the Institute for Research and Community Services of Institut Teknologi Bandung (LPPM ITB) and PPMI Riset Kolaboratif ITB. We would also like to thank the Meteorological, Climatological, and Geophysical Agency (BMKG), BPDAS Sei Jang Duriangkang, PDAM Tirta Kepri, BPBD and BAPPEDA of Riau Islands province, Bintan Regency for data support. The authors extend thanks to the anonymous reviewers for their constructive suggestions.
Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.
PY - 2023/10
Y1 - 2023/10
N2 - Bintan Island has experienced two consecutive record-breaking rainfall events that took place on 1-2 and 9-10 January 2021, and devastating floods that caused significant losses. This research studied the events to understand the synoptic conditions in which they occurred and to anticipate future incidents. Hourly rainfall data from the Kijang station and Global Satellite Mapping of Precipitation (GSMaP) were used. OLR (outgoing longwave radiation) was also explored as a proxy of convection. Rainfall measurements showed extreme rainfall during both flood events. Anomalies of moisture convergence were observed in the vicinity of Bintan Island during both events. The two extreme rainfall events were the results of interactions among several synoptic phenomena. The first event was associated with strong cold surges and the Borneo Vortex (BV), while the second event involved a moderate cold surge, the Madden-Julian Oscillation (MJO), and the BV. During both extreme rainfall events, the two BV locations were similar and close to Bintan Island, although their initial locations were different. The first BV was formed in the northern South China Sea and then propagated to the equator, due to the southward vorticity advection associated with a strong cold surge, while the second BV stagnated in the west of Borneo. Information on the important factors that triggered extreme events should be useful to manage the coastal environment for future island development.
AB - Bintan Island has experienced two consecutive record-breaking rainfall events that took place on 1-2 and 9-10 January 2021, and devastating floods that caused significant losses. This research studied the events to understand the synoptic conditions in which they occurred and to anticipate future incidents. Hourly rainfall data from the Kijang station and Global Satellite Mapping of Precipitation (GSMaP) were used. OLR (outgoing longwave radiation) was also explored as a proxy of convection. Rainfall measurements showed extreme rainfall during both flood events. Anomalies of moisture convergence were observed in the vicinity of Bintan Island during both events. The two extreme rainfall events were the results of interactions among several synoptic phenomena. The first event was associated with strong cold surges and the Borneo Vortex (BV), while the second event involved a moderate cold surge, the Madden-Julian Oscillation (MJO), and the BV. During both extreme rainfall events, the two BV locations were similar and close to Bintan Island, although their initial locations were different. The first BV was formed in the northern South China Sea and then propagated to the equator, due to the southward vorticity advection associated with a strong cold surge, while the second BV stagnated in the west of Borneo. Information on the important factors that triggered extreme events should be useful to manage the coastal environment for future island development.
UR - http://www.scopus.com/inward/record.url?scp=85168668606&partnerID=8YFLogxK
U2 - 10.1007/s00703-023-00982-1
DO - 10.1007/s00703-023-00982-1
M3 - Article
AN - SCOPUS:85168668606
SN - 0177-7971
VL - 135
JO - Meteorology and Atmospheric Physics
JF - Meteorology and Atmospheric Physics
IS - 5
M1 - 45
ER -