2024-09-06 阅读:348
受全球变化的影响,洪旱灾害受到广泛关注,包括云南在内的中国西南地区是全球干旱灾害频发区域,干旱机理、识别方法、评价模式等是其研究的重点。永利欢乐娱人城余航讲师、王龙教授以中国西南地区为研究区,首先从干旱机理出发,建立了区域和全球的干旱指标(文章1、2),从多时空尺度上解决了干旱识别率不高的问题,促进了干旱的深入认识;其次提出了一种新的序列内部结构检测的非参数统计方法(文章3),该方法不仅能够检测序列整体趋势,更能挖掘序列内部的模式特征;最后基于建立的方法,揭示了研究区干旱的地理分布规律(文章4、5),成果能够为研究区抗旱减灾、水资源配置提供决策参考。
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图1. The GDAIs at different time scales (1, 3, 6, 12 months).
图2. Trend of global temperature overall and low, middle and high values.
图3. Correlation coefficients
between SPERI and NAEA/CIP at different time scales.