摘要
为分析老哈河流区域的气温、净辐射、相对湿度、风速等气象要素的变化趋势及其对蒸发皿蒸发的影响,选用初头朗子流域实测资料进行计算分析。结果表明,年、季时间尺度的蒸发皿蒸发和风速均呈显著下降趋势,而气温、净辐射、相对湿度在不同时间尺度和不同季节的变化趋势则略有不同;风速和相对湿度是影响蒸发皿蒸发的最主要因素,其他气象要素对蒸发皿蒸发的影响则视时间尺度和季节的不同而不同。
To comparatively analyze the variation trends of meteorological variables, including air temperature, net radiation, relative humidity, wind speed, and their influences on pan evaporation with different climate conditions in the Laoha river Basin, the observed data during 1970 to 2005 from the Dianzi and Chutoulang subbasins are analyzed and evaluated. The results show that in both subbasins the pan evaporation and wind speed at annual and seasonal scales present decreasing trend with the Dianzi＇s being more significant, but air temperature, net radiation and relative humidity at annual and seasonal scales and in different seasons present different variation trend. Among the meteorological variables, wind speed is a key factor which affects pan evaporation, and the effects of other meteorological variables on pan evaporation vary with different climate conditions, time scales and seasons.
出处
《水电能源科学》
2008年第5期1-3,共3页
Water Resources and Power
基金
国家重点基础研究发展计划(973计划)基金资助项目(2006CB400502)
高等学校学科创新引智计划基金资助项目(B08048)
教育部“长江学者和创新团队发展计划”基金资助项目(IRT0717)
教育部科学技术研究基金资助重大项目(308012)
关键词
蒸发皿蒸发
气象要素
变化趋势
相关分析
老哈河
pan evaporation
meteorological variabtes
variation trend
correlation analysis
the Laoha river
