Volume 76 (2023)
Volume 75 (2022)
Volume 74 (2021)
Volume 73 (2020)
Volume 72 (2019)
Volume 71 (2018)
Volume 70 (2017)
Volume 69 (2016)
Volume 68 (2015)
Volume 67 (2014)
Volume 66 (2013)
Volume 65 (2012)
Volume 63 (2010)
Volume 62 (2009)
Evaluation of Accuracy of ECMWF Re-Analysis Data in Estimation of Soil Depths Temperature Changes (Case Study of Tehran)

Masoumeh Moghbel

Volume 74, Issue 2 , September 2021, , Pages 453-468


  Soil depth temperature is one of the most effective factors on agricultural products. However, the it has highest missing data in synoptic weather stations. Hence, this research aims to evaluate soil depth temperature changes and determine the accuracy and applicability of ECMWF re-analysis data in estimation ...  Read More

Trend and stationarity patterns of surface flow time series in the Southern Slopes of Alborz Range

Mahsa Mirdashtvan; Ali Najafinejad; Amir Sadoddin

Volume 71, Issue 2 , September 2018, , Pages 537-550


  Trend and stationarity analyses of hydrological variables are useful tools for understanding climate change and may provide useful information about likely changes in the future. As non-stationary of time series can occur due to various reasons such as trend existence in data; therefor, in current study ...  Read More

Investigating Low Flows trend Assessment in Isfahan Province

Masud Nasri; Reza Modares

Volume 70, Issue 1 , June 2017, , Pages 247-256


  Although a number of studies have been carried out around meteorological drought in Isfahan province, there is no specific study about hydrologic drought. In this study, low flows trend was analysed for the first time as the most important indicator of hydrologic drought in Isfahan province watersheds. ...  Read More

An Investigation on Trends of Annual and Seasonal Rainfall and Temperature in Different Climatologically Regions of Iran

Maryam Azarakhshi; Jalil Farzadmehr; Mahdi Eslah; Hossein Sahabi

Volume 66, Issue 1 , April 2013, , Pages 1-16


  Climate change is defined as long term and irreversible changes in the climatic behaviorof a region. Many studies have been conducted in different regions of the world on climatechange. The results of these studies show considerable changes in climatic factors especiallyin precipitation and temperature. ...  Read More

Statistical Analysis of Hydrological Regime Changes in Rivers of Western Part of Orumieh Lake Basin

Mehdi Teimouri; Ali Fathzadeh

Volume 65, Issue 3 , December 2012, , Pages 315-328


  The discharge data used for hydrological modeling should be the long-term suitable random data without trend and jump which is followed a specific statistical distribution. In this study, the above mentioned conditions were evaluated for 31 years period (1974-2004) of annual mean discharge data of 10 ...  Read More