Meteorological Drought Prediction in Karoon Watershed using Meteorological Variables
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2012, Vol 3, Issue 9
Abstract
The drought prediction, its severity and occurrence time are among important issues of meteorology and hydrology researchers. In this respect, the importance of weather and meteorological variables for estimating the drought severity is important for researchers. In this research by using variables such as air temperature and geopotential height in various layers of atmosphere, the relation between these variables in 31 years was investigated by standardized precipitation index (SPI) as regional drought index in Karoon watershed. After estimating average precipitation by statistical index of mutual information of point- meteorological variables that have a stronger relation with SPI profile in investigated area, meteorological variables were selected as suitable variables. Then along with prediction of regional drought class SPI, the support vector machine (SVM) was used as one of statistical learning methods. The results showed that this method is suitable for prediction of drought occurrence. Also by location searching for relation between meteorological variables and target values, the best combination of variables was selected and in most of cases this prediction with a suitable precision is applicable for real usages. The prediction precision in autumn and winter was higher than other seasons.
Authors and Affiliations
Alireza Nikbakht Shahbazi*| Department of Irrigation, Science and Research Branch, Islamic Azad University, Khouzestan, Iran.minews@ymail.com, Mohammad Heidarnejhad| Department of Irrigation, Science and Research Branch, Islamic Azad University, Khouzestan, Iran.
Effect of salicylic acid treatment on quality characteristics of sweet cherry fruit in during storage
The purpose of this work was to estimate shelf-life and to study the behavior of sweet cherry kept at 4°C in a normal atmosphere. The effects of postharvest salicylic acid applications on shelf-life and quality attribute...
The effects of Acetyl CoA as a chemical preservative on postharvest life of gerbera cut flowers
Production, increased quality and longevity of cut flowers like gerbera are of universal and economical importance. Various chemicals especially plant growth regulators are suggested as preservatives in vase solution whi...
The impact of Assertiveness Skills on job burnout bank managers
The purpose of this study is to explore the impact of Assertiveness Skills on job burnout bank managers.Study population was 160 bank managers of Mellat and Sepah Through Stratified sampling and Cochran formula, 93 perso...
Effect of Championship Trainings on Growth Hormone Response in adolescent’s Champion martial girls & boys
The present study investigated the effect of exercise on growth hormone and blood glucose response karate elite workers are teenagers. Growth hormone is a strong factor in the growth and increase muscle metabolism and tr...
Legislative protection of children against sexual harassment in national and international documents
Children are among the poor strata of criminal society that support of them by the legislature with respect to their physical and psychological status is of great importance. Sexual harassment is an instance of the child...