A5083054709- Meteorological Phenomena and Simulations
- Precipitation Measurement and Analysis
- Climate variability and models
- Hydrological Forecasting Using AI
- Radio Wave Propagation Studies
National University of Defense Technology
2020-2024
Evaporation ducts are a particular type of atmospheric stratification that frequently appears on the sea surface. The accurate and timely prediction evaporation duct height (EDH) is significant for practical application electromagnetic communication equipment. Due to typical time-series (TS) characteristics measured data, we construct an EDH model based long short-term memory network (LSTM-EDH model) first time. experimental results show LSTM-EDH model’s root-mean-square error (RMSE)...
The quality and accuracy of Numerical Weather Prediction (NWP) is based on its initial conditions (ICs), boundary forecast models. Data assimilation (DA) a crucial procedure to optimally estimate the actual atmospheric state (known as analysis field) ICs for NWP by integrating available information, including observation background field. Instead only focusing speed-up DA in virtue customized neural networks, this paper exploratively introduces spatial-temporal peculiarities construct new...
<title>Abstract</title> Precision in the initial state is pivotal for prediction accuracy of numerical weather models. A mature method providing state, variational data assimilation (VarDA) relies notably on a climatological background error covariance matrix, especially its diagonal, which encapsulates variance information. Nevertheless, estimation often contains errors, and current adjustment methods are manual or semi-adaptive. In this paper, an innovative adaptive strategy adjusting...
Meteorological satellite remote sensing is important for numerical weather forecasts, but its accuracy affected by many things during observation and retrieval, showing that it can be improved. As a standard way to measure wind from space, atmospheric motion vectors (AMVs) are used. They separate pieces of information spread out in the troposphere, which gives them more depth than regular surface or sea measurements. This makes rectifying problems difficult. For error correction, this...