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| Format: | Artículo científico |
| Language: | pt |
| Published: |
Universidade Federal de Santa Maria
2009
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| Online Access: | https://www.redalyc.org/articulo.oa?id=467546322019 |
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Table of Contents:
- Variabilidade espacial e temporal da fração evaporativa em áreas irrigadas: a influência do vento sinótico Magaly de Fátima Correia Ewerton Cleudson de Sousa Melo Maria Regina da Silva Aragão Estudios Ambientales The estimative of regional evapotranspiration (ET) by means of remote sensing require the conversion of instantaneous values into daily totals under the assumption that the evaporative fraction (EF) does not vary during daytime. However, there are few works that evaluate the conditions under which this quantity is conserved. In this work the RAMS (Regional Atmospheric System) model version 6.0 is employed to simulate the spatial and temporal distribution of the evaporative fraction over irrigated vegetation in the São Francisco River valley. The results show that temperature and moisture advection by the wind, vegetation type and soil moisture are key factors in the quantification of EF variability. 2009 artículo científico 0100-8307 https://www.redalyc.org/articulo.oa?id=467546322019 pt http://www.redalyc.org/revista.oa?id=4675 Ciência e Natura application/pdf Universidade Federal de Santa Maria Ciência e Natura (Brasil)