首页 | 本学科首页   官方微博 | 高级检索  
     检索      


An empirical relationship between temperature,vapour pressure deficit and wind speed and evaporation during a winter chinook
Authors:L C Nkemdirim
Institution:(1) Department of Geography, The University of Calgary, Calgary, AB, Canada
Abstract:Summary Evaporation rates determined by energy balance and bulk transfer equations and confirmed with soil moisture sampling was regressed against average daytime temperature, vapour pressure deficit and wind speed over several chinook events between 1986 and 1988. The equationE = 0.45 exp (0.35 
$$\overline T $$
+ 0.025umacr — 0.133 e *e]) yielded reasonable estimates of evaporation with surface soil moisture between saturation and near wilting point.E is evaporation in mmd –1,T, u ande * ande are temperature (°C), wind speed (ms–1), saturation vapour pressure and vapour pressure (mb) respectively. The overbar denotes daytime average.With 8 Figures
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号