Zhang Anzhi, Gao Hao, Xu Ronghan, Li Xiaoqing, Zhao Huichen, Jia Gensuo
CAS Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China.
Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Centre (National Centre for Space Weather)/CMA Innovation Centre for Fengyun Meteorological Satellites (FYSIC), China Meteorological Administration (CMA), Beijing, 100081, China.
Sci Data. 2025 Apr 7;12(1):583. doi: 10.1038/s41597-025-04935-8.
Droughts have become more frequent and intense with increasing climate warming, posing widespread risks on ecosystem, agricultural, and water resources, therefore effective and timely drought monitoring is critical to drought assessment, management, and mitigation. Here, we presented a global monthly and ten-day drought dataset of the Fengyun-3 Microwave Integrated Drought Index (FY-3 MIDI) by integrating the inconsistency corrected FY-3B/C/D derived microwave precipitation, soil moisture, and land surface temperature with optimal weights from June 2014 to present. The dataset was evaluated and validated against the Standardized Precipitation Evapotranspiration Index, the Self-calibrating Palmer Drought Severity Index, and the non-FY MIDI at 0.25°. The FY-3 MIDI can effectively observe drought condition and characteristics as captured by the reference datasets, and it was reliable in monitoring meteorological drought with the ability to work in all-weather condition. Based on the operational Fengyun-3 series satellite, it provided valuable operational service in near real-time on a monthly and ten-day time scale, guaranteeing present and future continuous applications to support global and regional drought monitoring and assessment.
随着气候变暖加剧，干旱变得更加频繁和严重，对生态系统、农业和水资源构成广泛风险，因此有效且及时的干旱监测对于干旱评估、管理和缓解至关重要。在此，我们通过将2014年6月至今经不一致性校正的风云三号B/C/D卫星获取的微波降水、土壤湿度和地表温度以最优权重进行整合，呈现了一个全球月度和旬度的风云三号微波综合干旱指数（FY-3 MIDI）干旱数据集。该数据集针对标准化降水蒸散指数、自校准帕尔默干旱严重度指数以及0.25°分辨率下的非风云三号MIDI进行了评估和验证。风云三号MIDI能够有效观测参考数据集中所反映的干旱状况和特征，并且在全天候条件下监测气象干旱方面具有可靠性。基于风云三号系列业务卫星，它在月度和旬度时间尺度上提供了近乎实时的宝贵业务服务，确保了当前及未来能够持续应用以支持全球和区域干旱监测与评估。
