Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR022704 |
Evapotranspiration Trends (1979-2015) in the Central Valley of California, USA: Contrasting Tendencies During 1981-2007 | |
Szilagyi, Jozsef1,2; Jozsa, Janos1,3 | |
2018-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:8页码:5620-5635 |
文章类型 | Article |
语种 | 英语 |
国家 | Hungary; USA |
英文摘要 | Trends in monthly evapotranspiration (ET) rates across three watersheds covering the Central Valley in California were calculated by the latest calibration-free version of the complementary relationship of evaporation for 1979-2015. While a recent study concluded that ET rates of the irrigated fields in the Central Valley were declining in 1981-2007, here an ET trend of about 2.6 +/- 12 mm per decade was found over the same period in spite of a drop in precipitation (-22 +/- 30 mm per decade) and ET rates (-9.5 +/- 10 mm per decade) for the rest of the watersheds, none of them statistically significant. After 2007, the precipitation decline accelerated causing a sharp drop in both irrigated and nonirrigated ET rates across the watersheds. Observations from the California Irrigation Management Information System support the present findings: Under increasing air temperatures, both dew point temperature and relative humidity values increased (at a statistically significant rate) during 1983-2007, while they reversed afterwards, in agreement with the estimated sharp irrigation ET trend decline for the remainder of the study period. Actual (in this case over irrigated fields) and reference ET rates complement each other, that is, they express opposite tendencies, as was demonstrated with California Irrigation Management Information System data, yielding a statistically significant plot-scale irrigation ET rate increase of 31 to 41 (+/- 17) millimeters per decade for 1983-2007 in accordance with a similar drop in reference ET rates of -28 to -50 (+/- 16) millimeters per decade, depending on whether published monthly or daily values (aggregated to monthly ones after leaving out spurious measurements) were employed. |
英文关键词 | evapotranspiration California irrigation complementary relationship |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445451800026 |
WOS关键词 | STANDARD METEOROLOGICAL DATA ; LAND-SURFACE EVAPORATION ; REMOTE-SENSING DATA ; COMPLEMENTARY-RELATIONSHIP ; UNITED-STATES ; REGIONAL EVAPOTRANSPIRATION ; IRRIGATED AGRICULTURE ; PRAGMATIC SYNTHESIS ; HYDROLOGICAL CYCLE ; REFERENCE CROP |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20838 |
专题 | 资源环境科学 |
作者单位 | 1.Budapest Univ Technol & Econ, Dept Hydraul & Water Resources Engn, Budapest, Hungary; 2.Univ Nebraska, Sch Nat Resources, Conservat & Survey Div, Lincoln, NE 68588 USA; 3.Budapest Univ Technol & Econ, MTA BME Water Management Res Grp, Budapest, Hungary |
推荐引用方式 GB/T 7714 | Szilagyi, Jozsef,Jozsa, Janos. Evapotranspiration Trends (1979-2015) in the Central Valley of California, USA: Contrasting Tendencies During 1981-2007[J]. WATER RESOURCES RESEARCH,2018,54(8):5620-5635. |
APA | Szilagyi, Jozsef,&Jozsa, Janos.(2018).Evapotranspiration Trends (1979-2015) in the Central Valley of California, USA: Contrasting Tendencies During 1981-2007.WATER RESOURCES RESEARCH,54(8),5620-5635. |
MLA | Szilagyi, Jozsef,et al."Evapotranspiration Trends (1979-2015) in the Central Valley of California, USA: Contrasting Tendencies During 1981-2007".WATER RESOURCES RESEARCH 54.8(2018):5620-5635. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论