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| Titel |
Relationship between Temperature and Evapotranspiration increase in Spain as a consequence of Climate Change |
| VerfasserIn |
J. M. Durán, S. Salamanca |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250031101
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| Zusammenfassung |
| Nowadays Climate Change (CC) must be taken into consideration as part of every important
decision. This is something that the authorities may have realized too late to avoid entirely,
but at least they have done so in time to predict some climatic disasters and prepare for
them.
Although there is a lot of controversy related to the origin of CC, most experts agree that
human responsibility has a lot to do with these changes, especially due to Greenhouse Gas
emissions. The most important changes expected due to CC are higher temperatures and
different intensity and frequency of precipitation. In agriculture, CC aggravates the problem
of water shortages. The changes suffered by crops as a consequence to CC referring to yield
are mainly caused by variations in crop water availability. When temperature rises and
precipitation decreases, crop water requirements increase; this increase must be
evaluated.
The aim of this paper is to estimate the variations in main crop water requirements
through Evapotranspiration (ETP, mm), depending on an increase of temperature from 0.5 to
2ºC, as suggested by IPCC until 2050.
Thirty-six agroclimatic stations from a national irrigation information net (SIAR) have
been used to evaluate ET0 (mm) along the last year, according to Penman-Monteith equation
recommended by FAO. The increases of monthly expected ET0 and ETP for different crops
have been shown by GIS for peninsular Spain. This estimation can be useful to know the new
water requirements of irrigated crops or the yield losses of non-irrigated crops. |
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