Mr. Ling Jiang Profile

Ling Jiang

at Ocean University of China

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Proceedings Article | 10 April 2018 Paper

Strong convective storm nowcasting using a hybrid approach of convolutional neural network and hidden Markov model

Wei Zhang, Ling Jiang, Lei Han

Proceedings Volume 10615, 106155E (2018) https://doi.org/10.1117/12.2302689

KEYWORDS: Data modeling, Machine learning, Atmospheric modeling, Radar, Feature extraction, Pattern recognition

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Convective storm nowcasting refers to the prediction of the convective weather initiation, development, and decay in a very short term (typically 0 ~ 2 h) .Despite marked progress over the past years, severe convective storm nowcasting still remains a challenge. With the boom of machine learning, it has been well applied in various fields, especially convolutional neural network (CNN). In this paper, we build a servere convective weather nowcasting system based on CNN and hidden Markov model (HMM) using reanalysis meteorological data. The goal of convective storm nowcasting is to predict if there is a convective storm in 30min. In this paper, we compress the VDRAS reanalysis data to low-dimensional data by CNN as the observation vector of HMM, then obtain the development trend of strong convective weather in the form of time series. It shows that, our method can extract robust features without any artificial selection of features, and can capture the development trend of strong convective storm.

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