Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China

Abstract Evapotranspiration is an important component of the water cycle, and possible trends in evapotranspiration can, among others, influence water management and agricultural production. Potential evapotranspiration (ETp) is a measure of the ability of the atmosphere to remove water from the sur...

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Autores principales:	Han Zhang, Lin Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0783fa44d68549e8bf3112f356c1bbd5
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spelling	oai:doaj.org-article:0783fa44d68549e8bf3112f356c1bbd52021-12-02T15:26:58ZAnalysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China10.1038/s41598-021-88162-22045-2322https://doaj.org/article/0783fa44d68549e8bf3112f356c1bbd52021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88162-2https://doaj.org/toc/2045-2322Abstract Evapotranspiration is an important component of the water cycle, and possible trends in evapotranspiration can, among others, influence water management and agricultural production. Potential evapotranspiration (ETp) is a measure of the ability of the atmosphere to remove water from the surface through the processes of evaporation and transpiration. It plays an important role in assessing regional dry–wet conditions and variations in meteorological conditions. This study analyzed the change trends of monthly ETp and surface dryness and wetness in the Hancang River Basin and, through principal component analysis and correlation analysis, explored the main meteorological factors that affected ETp and the interactions between meteorological factors; ETp values were estimated using the FAO-56 Penman–Monteith method. The results showed that there was a large gap in ETp between different months in the Hancang River Basin, with a trend of first increasing and then decreasing within a year. The highest monthly evapotranspiration was 114.119 mm (July), and the lowest was 42.761 mm (January). The maximum relative humidity index was 0.822 (August), and the minimum was -0.979 (January). The average temperature, precipitation, average relative humidity, and solar radiation are positive factors that affect ETp, while average air pressure is a negative factor that affects ETp. This study provides a reference for the wet conditions of small watersheds and for countermeasures to address climate change.Han ZhangLin WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Han Zhang Lin Wang Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China
description	Abstract Evapotranspiration is an important component of the water cycle, and possible trends in evapotranspiration can, among others, influence water management and agricultural production. Potential evapotranspiration (ETp) is a measure of the ability of the atmosphere to remove water from the surface through the processes of evaporation and transpiration. It plays an important role in assessing regional dry–wet conditions and variations in meteorological conditions. This study analyzed the change trends of monthly ETp and surface dryness and wetness in the Hancang River Basin and, through principal component analysis and correlation analysis, explored the main meteorological factors that affected ETp and the interactions between meteorological factors; ETp values were estimated using the FAO-56 Penman–Monteith method. The results showed that there was a large gap in ETp between different months in the Hancang River Basin, with a trend of first increasing and then decreasing within a year. The highest monthly evapotranspiration was 114.119 mm (July), and the lowest was 42.761 mm (January). The maximum relative humidity index was 0.822 (August), and the minimum was -0.979 (January). The average temperature, precipitation, average relative humidity, and solar radiation are positive factors that affect ETp, while average air pressure is a negative factor that affects ETp. This study provides a reference for the wet conditions of small watersheds and for countermeasures to address climate change.
format	article
author	Han Zhang Lin Wang
author_facet	Han Zhang Lin Wang
author_sort	Han Zhang
title	Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China
title_short	Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China
title_full	Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China
title_fullStr	Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China
title_full_unstemmed	Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China
title_sort	analysis of the variation in potential evapotranspiration and surface wet conditions in the hancang river basin, china
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0783fa44d68549e8bf3112f356c1bbd5
work_keys_str_mv	AT hanzhang analysisofthevariationinpotentialevapotranspirationandsurfacewetconditionsinthehancangriverbasinchina AT linwang analysisofthevariationinpotentialevapotranspirationandsurfacewetconditionsinthehancangriverbasinchina
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Analysis of the variation in potential evapotranspiration and surface wet conditions in the Hancang River Basin, China

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