| 大理州潜在蒸散量的计算及应用 |
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| 引用本文： | 周明昆,张健东,高月忠.大理州潜在蒸散量的计算及应用[J].气象与减灾研究,2013(4):55-59. |
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| 作者姓名： | 周明昆 张健东 高月忠 |
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| 作者单位： | 大理州气象局,云南大理671000 |
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| 摘 要： | 利用云南大理州12个气象站1961—2010年气温、日照、风速、蒸发量等观测资料,运用彭曼—蒙蒂斯公式计算大理州潜在蒸散量及湿润度指数,并对大理州潜在蒸散量的时空分布特征进行分析,对干旱情况进行评价。结果表明,大理州潜在蒸散量东部大,南部次之,北部最小。月潜在蒸散量5月最大,12月最小,1—5月递增,5—12月递减。1994—2010的平均潜在蒸散量明显大于1961—1993年。大理州潜在蒸散量与降水量、水汽压、气温、净辐射呈显著正相关关系,与风速没有明显的相关关系。正常年份大理州11月至次年5月都存在不同程度的干旱。
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| 关 键 词： | 潜在蒸散量 彭曼—蒙蒂斯公式 时空分布 湿润度指数。 |
CALCULATION AND APPLICATION OF POTENTIAL EVAPOTRANSPIRATION IN DALI |
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| Zhou Mingkun,Zhang Jiandong,Gao Yuezhong.CALCULATION AND APPLICATION OF POTENTIAL EVAPOTRANSPIRATION IN DALI[J].Meteorology and Disaster Reduction Research,2013(4):55-59. |
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| Authors: | Zhou Mingkun Zhang Jiandong Gao Yuezhong |
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| Institution: | (Dali Meteorological Bureau, Dali 671000, China) |
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| Abstract: | Based on the 1961-2010 conventional observation data from 12 meteorological stations in Dali, the potential evapo-transpiration in Dali was calculated by using Penman-Monteith Method to analyze the spatial and temporal distribution features. The results show that the potential evapotranspiration presents the largest value in eastern Dali, and the smallest value in northern area. The potential evapotranspiration is maximum in May and minimum in December. The average value of potential evapo-transpiration from 1994 to 2010 is larger than that from 1961 to 1993. The potential evapotranspiration is positively related to precipitation, vapor pressure, air temperature and net radiation,but not related with wind speed. In addition, different degrees of drought often occur during November to the next May in Dali. |
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| Keywords: | Dali Potential evapotranspiration Penman-Monteith method Drought monitoring Relative moisture index |
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