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| Titel |
Trends in climatic variables and future reference evapotranspiration in Duero Valley (Spain) |
| VerfasserIn |
R. Moratiel, R. L. Snyder, J. M. Durán, A. M. Tarquis |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 6 ; Nr. 11, no. 6 (2011-06-27), S.1795-1805 |
| Datensatznummer |
250009497
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| Publikation (Nr.) |
 copernicus.org/nhess-11-1795-2011.pdf |
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| Zusammenfassung |
| The impact of climate change and its relation with
evapotranspiration was evaluated in the Duero River Basin (Spain). The study
shows possible future situations 50 yr from now from the reference
evapotranspiration (ETo). The maximum temperature (Tmax), minimum
temperature (Tmin), dew point (Td), wind speed (U) and net
radiation (Rn) trends during the 1980–2009 period were obtained and
extrapolated with the FAO-56 Penman-Montheith equation to estimate ETo.
Changes in stomatal resistance in response to increases in CO2 were
also considered. Four scenarios were done, taking the concentration of
CO2 and the period analyzed (annual or monthly) into consideration. The scenarios studied
showed the changes in ETo as a consequence of the annual and monthly
trends in the variables Tmax, Tmin, Td, U and Rn with
current and future CO2 concentrations (372 ppm and 550 ppm). The future
ETo showed increases between 118 mm (11 %) and 55 mm (5 %) with
respect to the current situation of the river basin at 1042 mm. The months
most affected by climate change are May, June, July, August and September,
which also coincide with the maximum water needs of the basin's crops. |
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