Paper Information

Journal:   DESERT (BIABAN)   2003 , Volume 8 , Number 1; Page(s) 1 To 19.
 
Paper: 

THE RELATIONSHIP BETWEEN SHORT-DURATION RAINFALL COMPONENTS AND CLIMATIC CHANGES IN TABRIZ IN RECENT YEARS

 
 
Author(s):  KAMALI GH.A.*, JAVANMARD S.
 
* IRAN METEOROLOGICAL RESEARCH INSTITUTE, TEHRAN, IRAN
 
Abstract: 

Global climatic changes due to increased- greenhouse gas concentration are likely to increase temperature, change precipitation patterns and probably raise the frequency of extreme events. Global climate models currently can not simulate with accuracy the short-duration, high-intensity and localized heavy rainfall and a change in mean monthly rainfall may not be representative of a change in short-duration rainfall. In this study, due to the importance of precipitation in dry and semi-dry regions and role of rainfall components in sustainable development, the rainfall intensity-duration relationship for Northeastern Iran was investigated. The rainfall intensity-duration relationship with different reoccurrence period has some applications including dam building, watershed management and urban waste water design. Complete statistical tests including statistical credibility of data, homogeneity, independence tests were done on data collected from rain gauge network. The rainfall intensity average for 5- and 10- year periods, 1994-1998 and 1989-1998, respectively, were compared with long-term period data. The results showed that rainfall intensity with short durations of 10, 20 and 30 minutes was enhanced as compared to the long-term period data. In addition, the Gamma distribution had a better fitting from five selected distributions.

 
Keyword(s): CLIMATE CHANGES, DRY AND SEMI-DRY REGIONS, PRECIPITATION, RAINFALL DURATION, RAINFALL DURATION, RAINFALL FREQUENCY, RAINFALL INTENSITY
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 54
 
Latest on Blog
Enter SID Blog