Evapotranspiration data to determine agro-climatic zones in Egypt
| Autor: | Tahany A. Norledin, Samiha Ouda |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Hydrology
lcsh:TC401-506 Environmental Engineering business.industry 0208 environmental biotechnology Geography Planning and Development 20-year weather data lcsh:River lake and water-supply engineering (General) 02 engineering and technology agro-climatic zoning Development 10-year weather data Agricultural and Biological Sciences (miscellaneous) 020801 environmental engineering Landscape architecture BISm model Evapotranspiration Environmental science reference evapotranspiration business Water Science and Technology |
| Zdroj: | Journal of Water and Land Development, Vol 32, Iss 1, Pp 79-86 (2017) |
| ISSN: | 2083-4535 2005-2014 |
| DOI: | 10.1515/jwld-2017-0009 |
| Popis: | The objective of this paper was to compare between agro-climatic zones developed from 10-year interval of weather data from 2005-2014, 20-year interval of weather data from 1995-2014 and the zoning developed by [NORELDIN et al. 2016] using 30-year interval from 1985-2014 in the old cultivated land of Egypt in the Nile Delta and Valley. Monthly means of weather data were calculated for each year, and then monthly values for 10-year and 20-years were calculated for each governorate. Basic Irrigation scheduling model (BISm) was used to calculate reference evapotranspiration (ETo). Analysis of variance was used and the means was separated and ranked using least significant difference test (LSD0.05). Our results showed that agro-climatic zoning using 20-year values of ETo was similar to the zones developed with 30-year values of ETo, with different values of average ETo in each zone. Furthermore, using 10-year values of ETo resulted in higher values of ETo in each zone, compared to 20-year and 30-year ETo values. However, the average value of ETo over the three classifications was close to each other. Thus, depending on the availability of weather data, either zoning can be sufficient to develop agro-climatic zones. |
| Databáze: | OpenAIRE |
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