Open AccessIdentification of The Influence of Long Winter Season in 2017 – 2018 to the Forming of Strong Northerly Cold Surge over West Indonesia
Author(s) -
Y. A. Nugroho,
R. Fajarianti,
A. F. R. Imami,
Paulus Agus Winarso
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/303/1/012064
Subject(s) - landslide , climatology , natural disaster , geography , environmental science , surge , meteorology , geology , geotechnical engineering
This study identifies the characteristic of strong Northerly Cold Surge (NCS) over West Indonesia in the period from November 2017 until April 2018. Usually the NCS occurs in the DJF period that indicates the rainy season that usually goes to trigger some serve weather in Indonesia. The severe weather accompanying the intense northerly cold surge often brings more major disruptions that often trigger natural disasters like floods and landslides to the affected regions in West Indonesia. Descriptive and statistical methods are used in this study by classifying the intensity of NCS in November 2017 until April 2018. The real-time data from Ogimet Weather Information Service, GSMaP Satellite, and restudy data from National Centers for Environmental Prediction (NCEP) are used to determine the 925 millibar meridional wind, relative humidity in 1000, 925, 850, and 700 millibar, mean sea level pressure, and rainfall estimation to identify the passage of NCS in West Indonesia region. The long winter season in 2017 – 2018 triggered the NCS to stay active even it comes to March and April 2018. It is proven by the natural disaster that comes from consecutive intense rainfall like floods and landslides that still intensively occurred in the March until April 2018 in West Indonesia.