期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：189
期号：5
页码：052044
DOI：10.1088/1755-1315/189/5/052044
语种：English
出版社：IOP Publishing
摘要：Based on the daily pan evaporation and air temperature data of 28 meteorological stations in Huaihe River Basin from 1951 to 2015, the variation characteristics of pan evaporation and air temperature series in the same period are analysed, the evolution law of pan evaporation with climate change is discussed, and the existence of evaporation paradox is tested. The results show that: (1) the average annual evaporation changed significantly both in 1978 and 1998, dividing the evaporation series into high value fluctuating period, significant decreasing period and weak rising period. (2) the pan evaporation decreased obviously after the first mutation with air temperature increasing significantly, which indicates that there existed evaporation paradox in the basin from 1978 to 1998, and the spatial distribution of pan evaporation tendency was different obviously, gradually increased from southeast to northwest, from coast to inland, and from humid area to sub-humid area. The change of air temperature tendency was in contrast with evaporation at the same time. (3) after the second mutation, the decreasing trend of pan evaporation was stopped, and increased again insignificantly with the air temperature having a weak downward trend, which indicates that the evaporation paradox in the basin no longer exists after 1998.
Loading...
