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Showing 4 results for Trends
Sustainable regeneration qarters and urban poverty structures reform with a future studies approach (the case study: Ahwaz metropolitan worn – out and inefficient textures)
Ph.d Khalaf Anafjeh, Email: Moosa_ka@pnu.ac.ir, Ph.d Masoud Safaipour, Ph.d Abdulnabi Sharifi,
Volume 0, Issue 0 (3-1921)
Abstract
This paper tries to equip the 5 strategic drivers of the urban poverty system in the target areas of the research wich have the ability to management,manipulate and trace their effects through the regeneration process with poverty reduction policies in order to improve the state of the system in the mentioned arias.considering the basic necessity of economy–based organization of space, the aim of this paper is to regeneration and reform of structures of urban poverty in the target neighborhoods with a future studies approach.the type of research is applicable and its investigation method is descriptive-analytical based on newest future studies approach,normative in nature.after preparing the balance analysis of the possible states (uncertainty scenarios),extracting the qualitative judgments of 30 experts about the mutual influence of network relations through Delphi survey and algoritmic analysis of data using cib method in the scenario wizard software become possible.consideringthe size of the matrix and its demensions of (15*15) scenario wizard software analyzed the number of 3657 combined scenarios based on the data entered in the questionnaire and the number of 5 strong or probable scenarios,14 scenarios with high compatibility(belivable scenarios) and they reported 28 weack scenarios (possible scenarios) that finally,after verification and validation by experts,four scenarios were descriptively named with the title of m-a,m-sh,h-ha,z.s-j.in the end by using the thematic macro -rends that are introduced as technical tools of future –based economic intervantions in the regeneration process.for each driver,poverty reduction policies were formulated and proposed in the form of thematic measures based on desirable scenarios to reform urban poverty structures.

Modeling and predicting the trend of temperature changes in Hamedan county
Zohreh Maryanji, Fatemeh Sotoudeh, Meysam Toulabi Nejad, Ziba Zarrin,
Volume 0, Issue 0 (3-1921)
Abstract
Understanding and predicting future climatic conditions and characteristics is essential because of their importance in all aspects of life. This study seeks to examine the process of modifying temperatures in the Hamedan region by using Downscaling data to predict the public circulation data and its changes. The Lars Explore Downscaling Model has been used to fine-tune the data of the General Transport Model (HADGEM2-ES) and the paired model (CMIP5) and under the three release scenarios RCP2.5, RCP4.5, and RCP8.5). Estimates of the correlation of simulated data and actual data show values of more than 0.95 for all months. P_value also showed the statistical tests of model output, acceptable values in model performance in production and simulation. As a result, the data were extracted from 2011 to 2050. Data were examined in three intervals to detect trend changes. The results show that in the optimistic scenario (RCP2.5) there is no tangible trend in the mean and minimum temperature, while in the RCP4.5 and RCP8.5 scenario there are significant trends in temperature data and accordingly increase the minimum temperature, according to the increase in the minimum temperature, according to the increase in the minimum temperature, according to the increase 1 degree in the average temperature. It shows severe climate change that, especially in the cold season, changes the type of precipitation. Also, based on the data process, the significant increase in the average annual and monthly scale temperature in all three scenarios under study will indicate the environmental crisis ahead.

Statistical - Spatial Analysis of the Core of Siberian High Pressure System Period 1955-2014)
Daryosh Yarahmdi, Asadollah Khoshkish, Mustafa Karampour, Ismail Ahmadi,
Volume 16, Issue 40 (3-2016)
Abstract

One of the Siberian high pressure system is the Earth climate system, atmospheric important. The purpose of this study, analysis of core changes Siberian high pressure system in the period mentioned. To identify the core spatial variations in the timeframe mentioned data, daily sea level pressure and temperature of the earth's surface with a resolution of 2.5 degrees within the space of 30 to 65 degrees north latitude and 130 degrees east longitude from the database 45 to NOAA NCEP / NCAR for the cold was extracted. The core of the GIS spatial data analysis system and two separate zones and point to output six decades was ten years old and were analyzed. To study the process of change, determine the direction of the trend, type and timing of changes in temperature and pressure of the core of the system the test of Mann-Kendal is used. Comparison between the first and sixth decades 60-year period showed that the core in January from the East to the West and in October and March from the North East to the South West from the Balkhash Lake to Baikal there has been a significant shift. Results also showed that during the same period the Siberian High central pressure was reduced in January while the land surface temperatures in January showed a significant upward trend. Unlike the months of October and January, in March the central pressure had few mutations but no trend was observed. However, during this month the Earth's surface temperature has increased significantly during thementioned period.


A description on decadal changes in warm season average of precipitation over the Caspian coast of Iran territory
Dr Hossein Asakereh, Nasrin Varnaseri Ghandali,
Volume 22, Issue 64 (3-2022)
Abstract
Change in precipitation features is one of climate change outcome. Change in precipitation amount, especially in warm season, may influences climato-environmental phenomenon as well as human activity. In current research the decadal changes of monthly precipitation over the Caspian coast of Iran territory was evaluated. Accordingly, a large number of rain gauge stations (385 stations), where rainfall is measured painstakingly, have been used. these stations are under the supervision of Meteorological Organization of the country and Ministry of Energy. Since the original dataset pertaining to the precipitation prior to 1966 had noticeable missing values, and the data after 2016 were not accessible, a continuous time period from January 1966 to December 2016 was selected. From the daily precipitation of aforementioned stations contour maps were created using an ordinary Kriging method. The spatial resolution of these precipitation maps was 3 km * 3 km. Our finding showed that during the under investigation period the maximum gradient of precipitation moved from coastal parts toward mountainous area. Decrease in the area with high precipitation and increase in the low precipitation area is an other prominent decadal characteristics. According to the previous study, these changes might attributed to changes in systems which effect precipitation in the Caspian coast of Iran (northward movement in polar vortex, sub-tropical high pressure and cyclone truck). In addition, increasing temperature trends in the summer tend to decrease temperature spatial differences. Therefore, the convectional precipitation during summer has been decreased.

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