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However, most studies have focused on two-dimensional radar images, and extrapolation of multi-altitude radar images, which can provide more informative and visual forecasts about weather systems in realistic space, has been less explored. Thus, this paper proposes a 3D-convolutional long short-term memory (ConvLSTM)-based model to perform three-dimensional gridded radar echo extrapolation for severe storm nowcasting. First, a 3D-convolutional neural network (CNN) is used to extract the 3D spatial features of each input grid radar volume. Then, 3D-ConvLSTM layers are leveraged to model the spatial\u2013temporal relationship between the extracted 3D features and recursively generate the 3D hidden states correlated to the future. Nowcasting results are obtained after applying another 3D-CNN to up-sample the generated 3D hidden states. Comparative experiments were conducted on a public National Center for Atmospheric Research Data Archive dataset with a 3D optical flow method and other deep-learning-based models. Quantitative evaluations demonstrate that the proposed 3D-ConvLSTM-based model achieves better overall and longer-term performance for storms with reflectivity values above 35 and 45 dBZ. In addition, case studies qualitatively demonstrate that the proposed model predicts more realistic storm evolution and can facilitate early warning regarding impending severe storms.<\/jats:p>","DOI":"10.3390\/rs14174256","type":"journal-article","created":{"date-parts":[[2022,8,30]],"date-time":"2022-08-30T01:37:55Z","timestamp":1661823475000},"page":"4256","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Three-Dimensional Gridded Radar Echo Extrapolation for Convective Storm Nowcasting Based on 3D-ConvLSTM Model"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7562-8626","authenticated-orcid":false,"given":"Nengli","family":"Sun","sequence":"first","affiliation":[{"name":"The College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410005, China"}]},{"given":"Zeming","family":"Zhou","sequence":"additional","affiliation":[{"name":"The College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410005, China"}]},{"given":"Qian","family":"Li","sequence":"additional","affiliation":[{"name":"The College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410005, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9015-5465","authenticated-orcid":false,"given":"Jinrui","family":"Jing","sequence":"additional","affiliation":[{"name":"The College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410005, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/j.jhydrol.2003.11.034","article-title":"Short-range quantitative precipitation forecasting in Hong Kong","volume":"288","author":"Li","year":"2004","journal-title":"J. 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