Open AccessExperiments on Using WRF Model data Assimilation of Coupled 3DVAR – LETKF in Predicting the Geneses of Tropical Cyclones in the Vietnamese East Sea
Author(s) -
Trần Tân Tiến,
Dao Nguyen Quynh Hoa
Publication year - 2018
Publication title -
tạp chí khoa học đại học quốc gia hà nội: nghiên cứu giáo dục (vnu journal of science: education research)/tạp chí khoa học đại học quốc gia hà nội: các khoa học trái đất và môi trường (vnu journal of science: earth and environmental sciences)
Language(s) - English
Resource type - Journals
eISSN - 2615-9279
pISSN - 2588-1094
DOI - 10.25073/2588-1094/vnuees.4338
Subject(s) - tropical cyclone , weather research and forecasting model , data assimilation , climatology , tropical cyclogenesis , environmental science , meteorology , typhoon , cyclogenesis , cyclone (programming language) , geography , geology , computer science , field programmable gate array , computer hardware
In this research, several experiments using WRF to research the geneses of tropical cyclonesby data assimilation of coupled 3DVAR (3-dimensional variation) – LETKF (Local Ensemble Transform Kalman filter) have been processed. The analysis field after data assimilation procedure with observational information from synop, METAR, ships, soundings,... database produced from 36h before the recorded tropical cyclogeneses from recorded database with 72-days forecasts. The resulted analysis sea level pressure (SLP) fields were compared to the inital fields from control forecast (CTL), which shown the anomalous high pressure of +0.4mb in the area surrounding the actual genesis locations. The SLP and wind fields at 10-meter level in the WUTIP 2013 case has been using as an example of the divergence and diversity of multiple members’ tropical cyclone development.
Key words: tropical cyclones, tropical cyclogenesis, WRF, data assimilation, 3DVAR, LETKF