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:: Volume 2, Issue 4 (10-2008) ::
jwmseir 2008, 2(4): 56-65 Back to browse issues page
Evaluation of Regional Homogeneity and Data Synthesis on Simulation of Spatial Distribution of Annual Precipitation(Case Study: South West of Iran)
Jahangir Porhemmat , Sima Rahimi
Assistant Professor Soil Conservation and Watershed Management Research Center
Abstract:   (12314 Views)

Precipitation is the main component input of watershed in flood, water balance and water resources computation.

Any rainfall-runoff simulation of basin response by models needs the accurate amount of rainfall

over the basin. Therefore the simulation of spatial distribution of rainfall is an important factor. Measuring

rainfall in scattered point stations and generalizing it to arial extent often causes considerable errors. Such

source of error is one the most important in both rainfall-runoff simulation and continues hydrologic

process and water balance modeling. A number of methods of interpolation and extrapolation of rainfall

data has been developed which have some limitations and need to be evaluated accurately for finding the

most appropriate one based on specific local conditions. For the purpose of the research a wide range area

in the south west of Iran with about 258552 km

evaluated in regional homogeneity analysis. The results show that delineation of regional homogenity partly

improves the spatial distribution of rainfall. Another conclusion is that using estimated data for data

compellation has not improved the overall results.

2 was selected and different methods of interpolation were
Keywords: Iran, Precipitation, Synthesis, Spatial Distribution, Cluster
Full-Text [PDF 249 kb]   (1462 Downloads)    
Type of Study: Research | Subject: Special
Received: 2013/01/27
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Porhemmat J, Rahimi S. Evaluation of Regional Homogeneity and Data Synthesis on Simulation of Spatial Distribution of Annual Precipitation(Case Study: South West of Iran). jwmseir. 2008; 2 (4) :56-65
URL: http://jwmsei.ir/article-1-84-en.html


Volume 2, Issue 4 (10-2008) Back to browse issues page
مجله علوم ومهندسی آبخیزداری ایران Iranian Journal of Watershed Management Science and Engineering
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