کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
82697 | 158410 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Temporal characteristics of pan evaporation trends under the humid conditions of northeast India Temporal characteristics of pan evaporation trends under the humid conditions of northeast India](/preview/png/82697.png)
This paper analyses the temporal characteristics of pan evaporation (Epan) trends by using Mann–Kendall non parametric test and a parametric test under the humid conditions for eleven sites of northeast India. Decreasing Epan trends have been observed mainly in pre monsoon and monsoon seasons. On examining total rainfall's relationship with Epan, it is observed that almost all sites do not show a concurrent decrease in Epan and an increase in rainfall. Trend analysis of other meteorological parameters indicates decreases in sunshine duration and wind speed in different seasons over most of the sites and an increase in relative humidity over four sites in winter and pre monsoon seasons. The likely causative meteorological parameters of Epan changes by stepwise regression are also identified. The findings of this study suggest that mainly two parameters i.e. sunshine duration followed by wind speed strongly influenced Epan changes at various sites from different regions in different seasons.
Journal: Agricultural and Forest Meteorology - Volume 149, Issue 5, 7 May 2009, Pages 763–770