This study investigated the impact of assimilation satellite radiance observations in a three-dimensional variational data system (3DVAR) that could improve tracking and intensity forecasts Tropical Storm Dianmu 2021, which occurred over parts southeast mainland Asia. The weather research forecasting (WRF) model was used to conduct experiments storm. Four sets numerical were performed using WRF...

Abstract. Meteor radars have become widely used instruments to study atmospheric dynamics, particularly in the 70 110 km altitude region. These systems been proven provide reliable and continuous measurements of horizontal winds mesosphere lower thermosphere. Recently, there many attempts utilize specular and/or transverse scatter meteor estimate vertical wind variability. In this we investigat...

An initial condition that closely represents the true atmospheric state can minimize errors propagate into future, and could theoretically lead to improvements in forecast. This study aims evaluate understand impacts of 3DVAR on state-of-the-art Weather Research Forecasting (WRF) model with a two nested domains setup. The domain configuration covers China an emphasis Guangdong province, resolut...

Abstract Based on a short-time heavy rainfall in Anhui and the weather research forecasting (WRF) model, water vapor initial field of model is retrieved using statistical relationships reflectivity factor from Doppler radar with relative humidity hydrometeor. Three-dimensional variational (3DVAR) assimilation method used to assimilate radial velocity, then impact assimilating analysis forecast ...

In the first attempt to configure Fengyun-3B satellite’s Microwave Radiation Imager (MWRI) radiance data in Weather Research Forecast (WRF) model’s Data Assimilation system (WRFDA), impact of MWRI assimilation on analysis and forecast Typhoon Son-Tinh 2012 was evaluated with WRFDA’s three-dimensional variational (3DVAR) data-assimilation scheme. Compared a benchmark experiment no data, assimila...

The study is based on the Weather Research and Forecasting Model (WRF) three-dimensional variational (3DVAR) data assimilation system. Based two different control variables, effects of radar radial velocity in forecasting tropical cyclone (TC) Kompasu were evaluated. single observation experiment showed that DA_ψχ produces cyclonic increments, while DA_UV only increments same direction as obser...