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首页> 外文期刊>Journal of earth system science >Seasonal variation of evapotranspiration and its effect on the surface energy budget closure at a tropical forest over north-east India
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Seasonal variation of evapotranspiration and its effect on the surface energy budget closure at a tropical forest over north-east India

机译：印度东北部热带森林蒸散量的季节变化及其对地表能量收支的影响

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This study uses 1 yr of eddy covariance (EC) flux observations to investigate seasonal variations in evapotranspiration (ET) and surface energy budget (SEB) closure at a tropical semi-deciduous forest located in north-east India. The annual cycle is divided into four seasons, namely, pre-monsoon, monsoon, post-monsoon and winter. The highest energy balance closure (76%) is observed during pre-monsoon, whereas the lowest level of closure (62%) is observed during winter. Intermediate closure of 68% and 72% is observed during the monsoon and post-monsoon seasons, respectively. Maximum latent heat flux during winter (150 W m$^{-2}$) is half of the maximum latent heat (300 W m$^{-2}$) flux during the monsoon. ET is a controlling factor of SEB closure, with the highest rates of closure corresponding to the periods of the highest ET. The Bowen ratio ranges from 0.93 in winter to 0.27 during the monsoon. This is the first time the role of ET in the seasonal variation of SEB closure has been reported for any ecosystem in north-east India using EC measurements.
机译：这项研究使用1年的涡度协方差（EC）通量观测结果来调查印度东北部热带半落叶林的蒸散量（ET）和表面能收支（SEB）封闭的季节变化。年度周期分为四个季节，即季风前，季风，季风后和冬季。季风前的能量平衡关闭最高（76％），而冬季的能量平衡关闭最低（62％）。在季风季节和季风后季节分别观察到中间关闭率分别为68％和72％。冬季的最大潜热通量（150 W m $ ^ {-2} $）是季风期间最大潜热（300 W m $ ^ {-2} $）的一半。 ET是SEB关闭的控制因素，关闭率最高对应于ET最高的时期。鲍文比率从冬季的0.93到季风期间的0.27不等。这是首次使用EC测量报告了印度东北部任何生态系统中ET在SEB关闭季节变化中的作用。

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