松花江流域季节性气象干旱特征及风险区划研究
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冯波, 章光新, 李峰平
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Characteristics of Seasonal Meteorological Drought and Risk Regionalization in Songhua River Basin
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Bo Feng, Guangxin Zhang, Fengping Li
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表1 气象干旱评价指标评分体系 |
Table 1 Grading system of meteorological drought index |
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参 数 | 范围 | 评分 | 参 数 | 范围 | 评分 | 参 数 | 范围 | 评分 | 风速F(m/s) | 0~0.2 | 1 | 降雨距平百分率M(%) | ≥50 | 2 | 温度 距平T(℃) | <-2.0 | 2 | 0.3~1.5 | 2 | 1.6~3.3 | 3 | 25~50 | 4 | -2.0~-1.0 | 4 | 3.4~5.4 | 4 | 5.5~7.9 | 5 | -25~25 | 6 | -1.0~1.0 | 6 | 8.0~10.7 | 6 | 10.8~13.8 | 7 | -50~-25 | 8 | 1.0~2.0 | 8 | 13.9~17.1 | 8 | 17.2~20.7 | 9 | <-50 | 10 | ≥2.0 | 10 | 20.8~24.4 | 10 | 气压P(hpa) | 800~850 | 2 | 日照时数S(h) | <2 | 2 | 相对 湿度H | 0.8~1.0 | 2 | 850~900 | 4 | 2~4 | 4 | 0.6~0.8 | 4 | 900~950 | 6 | 4~6 | 6 | 0.4~0.6 | 6 | 950~1000 | 8 | 6~10 | 8 | 0.2~0.4 | 8 | 1000~1050 | 10 | >10 | 10 | 0~0.2 | 10 |
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