In collaboration with Payame Noor University and Iranian Association For Environmental Assessment (IAEA)
Volume 14 (2023-2023)
Volume 13 (2022-2022)
Volume 12 (2021-2021)
Volume 11 (2020-2021)
Volume 10 (2019- 2020)
Volume 9 (2018- 2019)
Volume 8 (2017-2018)
Volume 7 (2016- 2017)
Volume 6 (2015-2016)
Volume 5 (2014- 2015)
Volume 4 (2013-2014)
Volume 3 (2012-2013)
Volume 2 (2011-2012)
Volume 1 (2010-2011)
Volume 1 (2009)
Monitoring and evaluation of snow cover changes trend in the cities of (Golestan, Mazandaran and Gilan provinces)

Ata ghafari gilandeh; vahid safarian zengir

Articles in Press, Corrected Proof, Available Online from 05 April 2023

https://doi.org/10.30473/grup.2023.66285.2749

Abstract
  In the current research, based on the data of the satellite images of the MODIS sensor, located on the Terra and Aqua satellites and the GRACE gravimetric satellite, with the innovative approach of algorithm and coding in the web system of Google Earth Engine in the cities of the provinces (Golestan, ...  Read More

Study of the Change Trend in Selected Cities Temperature Extremes Using Artificial Neural Network Model

Behroz Sobhani; Leyla Jafarzade Aliabad; Vahid Safarian Zengir

Volume 13, Vol 3 , Series 28 , December 2023, , Pages 135-154

https://doi.org/10.30473/grup.2020.39838.2145

Abstract
  The aim of the current research is to study and predict hazardous extreme temperatures in some cities of central Iran, for this purpose the minimum and maximum temperature data of 15 meteorological stations (cities: Esfahan, Shahreza, Natanz, Nain, Ardestan, Semnan, Shahroud, Garmsar, Damghan, Yazd, ...  Read More

Climatology
Analysis of Standardized Precipitation Drought Indices in the Cities of Ardebil Province

vahid safarian zengir; Broumand Salahi; Roghayeh Maleki Meresht; MohammadKia Kianian

Volume 11, Issue 21 , September 2021, , Pages 121-136

https://doi.org/10.30473/grup.2020.7476

Abstract
  The aim of this study was to analyze rainfall drought indices to predict and reduce their negative effects in Ardebil province, which involved a descriptive-analytical study in terms of research type. Data were collected using documentary method. Accordingly, the information of mean rainfall and mean ...  Read More

environment
Assessment of synoptic conditions of occurrence of flood-induced rainfall in Khalkhal city with a perimeter environmental approach during the time period 2016- 1987

vahid safarian zengir; BATOL Zenali; Leyla Jafarzadeh Aliabad

Volume 10, Issue 19 , April 2019, , Pages 89-104

https://doi.org/10.30473/grup.2019.5635

Abstract
  y in Ardabil province analyzed the precipitation data of 30 years from 1987 to 2016. Most of the precipitation occurred on 09/12/1991.Synoptic atmospheric maps of this date at a level of 500 Millibars were prepared by sea level elevation maps, geopotential heights, wind speed and direction, humidity, ...  Read More

environment
Spatial Distribution Modeling of Lightning Precipitation Using Satellite Images and Estimation of Perceptible Water, Case Study:Cities of Ardebil Province

Behroz Sobhani; vahid safarian zengir; Rabab dyhm

Volume 10, Issue 19 , April 2019, , Pages 151-164

https://doi.org/10.30473/grup.2019.5644

Abstract
    Thunderstorms rainfalls are a kind of unstable storms that are caused by an extremely strong abnormal state of atmospheric displacement and are one of the most important climatic phenomena in the northwest of the country.The aim of this study was to determine the spatial distribution of thunderstorms ...  Read More