| 梅县干旱季节变化特征 |
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| 引用本文： | 刘蕾,彭量,张静雯.梅县干旱季节变化特征[J].安徽农业科学,2010,38(34):19583-19584,19735. |
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| 作者姓名： | 刘蕾 彭量 张静雯 |
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| 作者单位： | [1]广东省梅县气象局,广东梅县514700 [2]广东省梅州市气象局,广东梅州514021 [3]广州市环境技术中心,广东广州510055 |
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| 摘 要： | 气候变暖导致蒸发量增加可能是影响气候干湿状况的主要因素,但目前的相关研究大多侧重于汛期降水分析,而缺少蒸发的考虑。根据1980～2009年30年间梅县站实测的逐日平均气温、风速、最低温度、最高温度、降水量等资料,运用具有坚实物理基础的Pen-man-Monteith公式计算了梅县历年的潜在蒸散量,采用中华人民共和国国家标准（GB/T20481-2006）《气象干旱等级》推荐的湿润度指数,定量化分析梅县干湿状况及其变化特征,对应对气候变化,开发利用气候资源,调整种植区划和农业生产布局具有重要参考价值。
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| 关 键 词： | 湿润度指数 潜在蒸散量 降水量 干湿状况 气象干旱等级 |
Seasonal Variation of Drought in Meixian |
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| Institution: | LIU Lei et al(Meixian Meteorological Office,Meixian,Guangdong 514700) |
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| Abstract: | The increasing evaporation caused by climate warming might be the main factors influencing the arid and humid weather conditions,but most of the current studies focused on the precipitation analysis during the flood season but without taking into account the evaporation.According to the average daily temperature,wind velocity,maximum temperature,minimum temperature,precipitation and other data observed in Meixian station during the 30 years from 1980 to 2009,the potential evapotranspiration in Meixian over the past years was calculated by Penman-Monteith formula with solid physical basis,then according to the moisture index introduced by Classification of Meteorological Drought(GB/T20481-2006) released by PRC,the arid and humid conditions as well as its variation features in Meixian were quantitatively analyzed,which was of great reference value to coping with climate changes,developing and utilizing climate resources and adjusting planting division and agricultural production layout. |
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| Keywords: | Moisture index Potential evapotranspiration Precipitation Dry and wet conditions Meteorological drought level |
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