Regional evapotranspiration rate of oasis and surrounding desert
Article first published online: 6 JUL 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 27, Issue 24, pages 3409–3414, 29 November 2013
How to Cite
Jia, J., Zhao, W. and Li, S. (2013), Regional evapotranspiration rate of oasis and surrounding desert. Hydrol. Process., 27: 3409–3414. doi: 10.1002/hyp.9447
- Issue published online: 23 OCT 2013
- Article first published online: 6 JUL 2012
- Accepted manuscript online: 7 JUN 2012 01:58PM EST
- Manuscript Accepted: 29 MAY 2012
- Manuscript Received: 22 FEB 2011
- Surface Energy Balance Algorithm for Land;
- edge effect of oasis
The surface energy balance algorithm for land method was used in this study to calculate the evapotranspiration (ET) rate for the middle reaches of the Heihe River Basin, Gansu Province, China, to analyse ET distribution within the oasis and the surrounding desert and, especially, on the edge zone of the oasis. Five profile graphs were created vertical to the river. Because of the inverse humidity phenomenon, the least amount of evapotranspiration occurred on the desert close to the oasis. The average evapotranspiration rate was roughly proportioned from the edge of the oasis to inside and outside its boundary. Two meteorological ground stations located close to the oasis edge showed a notable difference in net radiation flux that led to the difference found in ET. The primary reason for the significant differences observed in net radiation may be largely the result of differences in flux reflectivity and surface temperature. Meteorological data show that water supply also played an important role. Copyright © 2012 John Wiley & Sons, Ltd.