Volume 45 (2021)
Volume 44 (2020)
Volume 43 (2019)
Volume 42 (2018)
Volume 41 (2017)
Volume 40 (2016)
Volume 39 (2015)
Volume 38 (2014)
Volume 37 (2013)
Volume 36 (2012)
Volume 35 (2011)
Volume 34 (2010)
Volume 33 (2009)
Volume 32 (2008)
Volume 31 (2007)
Volume 30 (2006)
Volume 2 (1963)
Volume 1 (1961)

“This journal is following of Committee on Publication Ethics (COPE) and complies with the highest ethical standards in accordance with ethical laws”.

In the evaluation of the Scientific Journals Commission of the Ministry of Science, Research in 1998,NIVAR Scientific Journal has obtained the score of 5.706 and rank (b) and in the latest evaluation of the Islamic World Science Citation Database (ISC), it has obtained a rank (Q2).

Original Article
Statistical analysis of snow cover characteristics in the Middle Zagros region

moslem seidy shahivandi; kamal omidvar

Volume 46, Issue 118 , September 2022, Pages 1-12


  One of the most important forms of precipitation in the hydrological cycle of mountainous regions is snow. In this research, after collecting statistics and information related to days with snow during the statistical period (1989-2018) in stations located in the three provinces of Kermanshah, Ilam and ...  Read More

Original Article
The Impact of Climate Change on the heavy Rainfall and Extreme Temperatures (Bijar, Khalkhal, Zanjan, Qorveh and Miane stations Sefidrood Basin)

mojtaba Safavi; Hamid Moslemi; marzeyh Rezai; Raheleh Darvishi

Volume 46, Issue 118 , September 2022, Pages 13-24


  The occurrence of heavy rains and extreme events due to climate change has had devastating effects on the economic, social context. Therefore, studying the variability and behavior of heavy rainfall events and heavy rainfall is of particular importance. In this study, we investigated the impact of climate ...  Read More

Original Article
Use of new methods to determine the inputs effective in estimating soil temperature

Babak Mohammadi

Volume 46, Issue 118 , September 2022, Pages 25-36


  In this research, an estimate of the depth of 10 cm in the soil of the Synoptic Station of Tabriz in East Azerbaijan province was carried out using artificial neural network (ANN) and backward vector machine (SVM). Two main component analysis (PCA) and gamma (GT) tests were used for pre-processing data ...  Read More

Original Article
Analysis of the impact of meteorological parameters over the main stage of rice cultivation in Mazandaran province

ANAHITA Kheirkhah; Gholam Ali Kamali; Amirhossein Meshkvati; Hossein Babazadeh; Ebrahim Asadi Oskouei

Volume 46, Issue 118 , September 2022, Pages 37-52


  It has been tried to investigate and study the fluctuations of different meteorological parameters at different probability levels in the important stages of the agricultural calendar. To conduct this study, first, the traditional agricultural calendar was prepared through the reports of the Amol Rice ...  Read More

Original Article
Shifts in planting date and change in length of growing season in Yazd province under warmer climate conditions

mansuoreh kohi; Ebrahim Fattahi; Ebrahim Asadi Oskouei

Volume 46, Issue 118 , September 2022, Pages 53-68


  Changes in the land biosphere since 1970 are consistent with global warming: climate zones have shifted poleward in both hemispheres, and the growing season has on average lengthened by up to two days per decade since the 1950s in the Northern Hemisphere extratropic. In this research, projected change ...  Read More

Original Article
Effect of the ensemble system size on the precipitation forecast accuracy

Atefeh Mohamadi; Majid Azadi

Volume 46, Issue 118 , September 2022, Pages 69-78


  Numerical weather prediction (NWP) models are not completely accurate and error free, and there is always some uncertainty. The errors in weather forecasting stem from the limitations of human theoretical understanding of the atmosphere and the operational capacity to produce forecasts. It is necessary ...  Read More

Original Article
Determining flood-prone points and statistical-synoptic analysis of torrential rains in East Azarbaijan province

Mehdi Eslahi; Farnaz Pourasghar; Younes Akbarzadeh; Mohammad Omidfar; abbas shahmary; Naser Mansouri Derakhshan

Volume 46, Issue 118 , September 2022, Pages 79-88


  In this research, the flood-prone areas of East Azarbaijan province were identified using the flood damage information of regional water and crisis management for the period of 1378-1397, and a map of the spatial distribution and frequency of flood events was drawn. The highest frequency of floods occurred ...  Read More

Original Article
Speckle filtering impact on land cover mapping using the combination of Sentinel-1 and Sentinel-2 images (Case study: Bandar Mahshahr)

Mohammad Hossein Hajarian; Sara Attarchi; Seyyed Kazem Alavi Panah

Volume 46, Issue 118 , September 2022, Pages 89-106


  Land use and land cover maps are essentially needed for socio-economic development and environment protection. Accurate and up to date maps play an important role in urban planning. Synthetic Aperture Radar (SAR) sensors provides unique information from the Earth surface due to their imaging capabilities ...  Read More

Original Article
Fluctuations of temperature and thermal energy in the place of double diffusion structures in the Strait of Hormuz

Mostafa Solgi; Mahdi Mohammad-Mahdizadeh; Abbas Ali Ali Akbari Bidokhti; Smaeyl Hassanzadeh

Volume 46, Issue 118 , September 2022, Pages 107-122


  Double Diffusion Convection (DD) structures, in two types of Salt-Fingering (SF) and Diffusive Convection (DC), occur due to vertical temperature and salinity gradients with different diffusion coefficients. And thermohaline circulation in the Strait of Hormuz often causes the formation of SF on the ...  Read More

Original Article
Investigating the level of stability of the water zone of Hamon wetlands using sensor images GEE in MODIS

Mohammad Fartoot Enayat; Kourosh Mohammadpour; ali asghar abdollahi; Bita Jeddi

Volume 46, Issue 118 , September 2022, Pages 123-136


  International Hamoon wetland has played an important role in social, economic, security, political and environmental activities in southeastern Iran as the 12th residential wetland. In this research, using the Google System inheritance of the Engine and the NDWI Index of Madis Sensor and its verification ...  Read More

Original Article
Investigating the relationship between dust event and climate and surface factors in Khuzestan province (2011-2019)

Mahnaz Karimkhani

Volume 46, Issue 118 , September 2022, Pages 137-154


  Khuzestan province is affected by dust storms. The purpose of this study is to identify ‎the most significant climate and surface factors in the emission and transfer of dust in this province. By means ‎of remote sensing data including MERRA-2, GLDAS as well as Aqua, the ‎monthly average ...  Read More

Original Article
A study of summer rainfall on the southern coast of the Caspian Sea using WRF and satellite numerical forecasting models

donya sadeghnezhad; Ebrahim Fatehi; Gholam Ali Kamali; Zahra Ghassabi

Volume 46, Issue 118 , September 2022, Pages 155-165


  The amount of precipitation plays an essential role in the occurrence of floods. The more accurate the rainfall forecast is, the better the flood can be predicted. Numerical weather forecasting models such as WRF usually do not have suitable outputs for predicting the amount of precipitation in the first ...  Read More

Analysis and Forecasting some Climatic Element of Mashhad

mahmoud davodi; hosien mohamadi; naser bay

Volume 34, 71-70 , February 2010, , Pages 35-46

  In this study climate of Mashhad is analyzed by applying climatic methods and then according to trends of climatic elements based on 18-year periods the future climate of Mashhad is studied. Climatic factors have been predicted up to year 2015. The researchers took advantage of statistics of archives ...  Read More

Comparison of different methods of estimating potential evapotranspiration by FAO Penman Monteith (Case Study: Sepidan Region)

Hedieh Ahmadpari; Seyyed Ebrahim Hashemi Garmdareh; Kobra ghalehkohneh

Volume 41, 98-99 , January 2017, , Pages 13-22


  Evapotranspiration is an important factor of hydrological cycle that must be estimated in irrigation and drainage projects. Studies have shown that in the absence of lysimeter, FAO Penman-Monteith method provide acceptable estimate of evapotranspiration values, but this method requires a lot of meteorological ...  Read More

The Pattern of Tidal Currents in the kangan port

kamran lari; masoud torabi; farnaz asadi

Volume 35, 73-72 , May 2011, , Pages 33-44

  In this research a non-linear model presents for modeling the tidal currents in shallow sea areas. This pattern is based on the solution of shallow water equations, effects of earth rotation, topographic changes and influences of the bottom friction. For facilitating the calculations a program was written ...  Read More

Analysis of the precipitation and drought trend variations using Mann-Kendall and Sen Tests in Tehran Province

hosein maleki; mehdi solaimame; aazam jaedaei; somayeh shater

Volume 37, 80-81 , February 2013, , Pages 43-54

  Trend analysis of climatic factors, especially precipitation time series can show the climatic situation of a region. Simultaneous comparison of the results of trend and drought indices in a region tends to better regional climatic analysis. To study the precipitation trend in Tehran Province, the historical ...  Read More

Original Article
Investigation the understanding of Mazandaran’s rice farmers about the climate change and their approaches to tackle it

ANAHITA Kheirkhah

Articles in Press, Accepted Manuscript, Available Online from 12 October 2022


  Identifying the local people's attitude towards climate change and the traditional and modern solutions they took to adapt can be very useful in managing the effects of climate change. The purpose of this research is to present the views and attitudes of the native rice farmers of Mazandaran with climate ...  Read More

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