Rainfall-Altitude Relationship in Saudi Arabia
Joint Authors
al-Ahmadi, Sharaf
al-Ahmadi, Khalid
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-04-30
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Relations between rainfall and the altitude of the terrain can have significant implications for rainfall-runoff studies in hydrology.
The aim of this paper is to report on a study of relationships between annual and seasonal rainfall and the altitude of the terrain in Saudi Arabia (SA) using global ordinary least square (OLS) and local geographically weighted regression (GWR) methods.
Results using the OLS method showed a significant correlation between altitude and spring rainfall, with a coefficient of determination of r2=0.54, P<.05 but no significant correlation for the annual and other seasons’ rainfalls.
The relationships were more pronounced when GWR local analysis was performed with coefficients of determination of r2=0.78, 0.64, 0.83, 0.82, and 0.71 for annual, winter, spring, summer, and fall rainfalls, respectively.
There was some variation in the parameter estimates derived with GWR, but the majority of the estimates indicated a positive association.
Results from this study corroborate those of selected other studies in which rainfall and altitude were found to be correlated spatially.
The authors concluded that the use of a nonstationary local model such as GWR enabled them to provide a deeper explanation of relations between rainfall and the altitude of the terrain than a global model such as OLS in terms of spatial estimation and prediction.
American Psychological Association (APA)
al-Ahmadi, Khalid& al-Ahmadi, Sharaf. 2013. Rainfall-Altitude Relationship in Saudi Arabia. Advances in Meteorology،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-466040
Modern Language Association (MLA)
al-Ahmadi, Khalid& al-Ahmadi, Sharaf. Rainfall-Altitude Relationship in Saudi Arabia. Advances in Meteorology No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-466040
American Medical Association (AMA)
al-Ahmadi, Khalid& al-Ahmadi, Sharaf. Rainfall-Altitude Relationship in Saudi Arabia. Advances in Meteorology. 2013. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-466040
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-466040