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基于LGU-Net的数值天气预报融合订正方法
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作者 吴鲲鹏 袁建富 +1 位作者 赵宇恒 王璐 《热带气象学报》 北大核心 2025年第6期859-871,共13页
数值天气预报是现代天气预报的主流技术方法,近年来一直在向精细化方向发展,但预报误差仍无法完全避免。本研究提出了基于LSTM-GAM-UNet(LGU-Net)的数值预报偏差订正模型,该模型在CU-Net的基础上引入了长短期记忆网络(Long Short-Term M... 数值天气预报是现代天气预报的主流技术方法,近年来一直在向精细化方向发展,但预报误差仍无法完全避免。本研究提出了基于LSTM-GAM-UNet(LGU-Net)的数值预报偏差订正模型,该模型在CU-Net的基础上引入了长短期记忆网络(Long Short-Term Memory,LSTM)结构和全局注意力机制(Global Attention Mechanism,GAM),进一步融合多种气象要素、“吉林一号”卫星获取的地形特征以及卫星云图,构建多要素融合订正模型,并专门针对气象预报领域进行了优化设计。在中国东北地区进行实验,对美国国家环境预报中心的全球预报系统(Global Forecast System,GFS)数值预报模式中2 m温度(T 2)、2 m露点温度(D 2)、10 m的风速(U10、V10)和降水量进行订正,并进行了不同模型的偏差订正实验和对比分析。通过与GFS数值预报模式原始预报结果、模式距离积分订正预报法(Anomaly Numerical-correction with Observation,ANO)订正结果以及CU-Net方法订正结果进行对比,结果表明LGU-Net模型能有效改进数值预报订正效果。此外,云图数据的加入对降水量订正有着明显的正向增益效果,其均方根误差(RMSE)和平均绝对误差(MAE)相对于GFS分别提升了80.76%和76.04%。本研究为高精度气象要素预报提供了新的技术支持。 展开更多
关键词 数值天气预报 深度学习 lgu-Net 偏差订正
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Assessment and Perceived Impact of Coastal Resource Management (CRM) Programs in the Southern Part of Masbate Island, Philippines
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作者 Benedicto B. Balilo Jr. Angelo P. Candelaria Ronnel R. Dioneda Sr. 《Journal of Geoscience and Environment Protection》 2023年第3期87-103,共17页
Coastal Resource Management (CRM) are activities that achieve sustainable use and management of valuable resources in coastal areas. This study presents the perceived impact of the coastal resource management (CRM) in... Coastal Resource Management (CRM) are activities that achieve sustainable use and management of valuable resources in coastal areas. This study presents the perceived impact of the coastal resource management (CRM) interventions implemented by the Bureau of Fisheries and Aquatic Resources (BFAR) under the FishCORAL Project in the Municipality of Milagros, Masbate. The respondents are members of fisherfolk organizations, Bantay Dagat (BD), and community members. The CRM projects include mangrove planting, the establishment of marine protected area (MPA) markers, the construction of a watchtower, and the establishment of Bantay Dagat (BD). Respondents were convinced that the interventions affected their daily living, especially mangrove planting projects. Members of fisherfolk organizations carried out the project in Barangays Jamorawon, Magsalangi, and Tagbon. In terms of knowledge, attitude, and practices (KAP), these could be attributed to the respondent’s appreciation of the intervention, which contributed to the protection of the area from flood, storm surge, and tsunami, support for livelihood, the presence of marine animals (i.e., shrimp and crabs), and apprehension of illegal fishing activities. Destructive fishing, domestic waste, and natural calamities are some identified causes of aquatic ecosystem destruction. In terms of socioeconomic, respondents are provided additional income ranging from Php 1,500.00 - 2,000.00 per month, and fish stocks have also increased. The distribution of fishnets and Banca, livelihood, protection of marine resources, and commitment of legal authorities to enforce related fishery policies are among the CRM activities with a sound impact on the community. 展开更多
关键词 Non-Livelihood CRM Bureau of Fisheries and Aquatic Resources lgu Milagros Impact Assessment
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