فهرست مطالب esmaeil shahkooeei

 One of the phenomena that has been transformed into a permanent covenant with western provinces for many years is the phenomenon of dust. This phenomenon has involved most western and southern provinces since 1988. Various reasons include human interference in the unreasonable use of surface and underground water resources, degradation of vegetation, soil degradation by agriculture and frequent use of land, along with the exacerbation of some natural factors such as drought and climate change. In this study, for statistical analysis, drought-climatic data on a daily basis for the 20-year statistical period from 1991 to 2020, 19 stations Synoptic Northwest of the country was prepared by the country's meteorological organization. The purpose of this study is to investigate the climate-related climatic phenomena caused by microstates in the northwest provinces of the country for different months of the year, along with the identification of their continuity and frequency, as well as the main source of dust entering the study area.   The method of work is as follows: First, the frequency of the dusty phenomenon was monthly, seasonally and annually, as tables and charts.. Then data on the number of dust events in different years were specified and entered into ArcGIS software. The results of the survey showed that the magnitude of the damage was not limited to the threat of agricultural land and industrial land, but rather to disrupt the normal life of the people, clearly has become a serious environmental threat and has led to the reaction of public opinion. Recent drought, imposed war, agriculture, damming, water warfare and the policy of transferring water from water-saturated areas to low water areas in Khuzestan and Ilam, where the two regions are the main effects of the micro-organisms.

Abstract The simulated weather data for future planning in the field of natural and human resources is of paramount importance. Including the ability to forecast droughts, which in this case can be reduced with systematic planning of possible losses. In this study, data HADCM3 model under emission scenarios A1B, A2 and B1 to predict the meteorological data of North Khorasan province were simulated using LARS WG statistical dust. For this purpose, after calibration, validation and modeling data on selected stations, data base model in terms of compliance with simulated values (2012-1993-2032-2013) using three criteria Root Mean Square error (RMSE), mean absolute error (MAE) and mean bias error (MBE) were evaluated. Using indices SPI and RDI to get wet and drought periods during the simulated under the scenarios B1, A2, A1B was developed. . The results show that the frequency of droughts over the forecast period under all three scenarios compared to the baseline and annual month-long scale using SPI and RDI decreased to indicates % of the occurrences on the other hand grew wet. The highest frequency of normal class time devoted gained in both scale. More from the base period of the indices using SPI and RDI is predicted.Drought and climate phenomena will be appointed as part of the climate of a region. It has features that separates it from other natural disasters. Drought long-term shortage of rainfall in the period so that the moisture in the soil, causing reduced water flow And thereby disrupt human activities and natural life plants and animals. From a cognitive point of view of climate, when the rainfall received in a place in a certain period of time is less than average precipitation location, we are faced with drought (spunky, 1374).

Temperature is one of the most important elements of climate that its changes can alter the climate of each region and plays a major role in how to operate the environmental and agricultural powers. The objectives of this study were the identification and evaluation of temperature anomalies in Mazandaran province. The data used in this study have been considered on a daily basis for the statistical period from 1971 to 2010 including two maximum and minimumm environmental data groups from 24 meteorological stations on land, pressure data at sea level and 500 hecto-pascal along the axis 52.5 ° east. In this study, the positive deviations in temperature continuing up to eleven days are considered as an indicator of temperature anomalies. The results of this study showed that the frequency of temperature anomalies in the province stations did not show significant differences. Also it is showed that the large-scale temperature anomalies are controlled by climatic factors outside the control of the local scale.However abnormality repetition, especially in maximum temperatures at the mountain stations has partially been more than coastal stations and the plains of the province. For this purpose, the relationship between abnormalities was evaluated with the index. And it was found that the estimated index in the studied region had high correlation with the province temperature anomalies. In addition, the anomaly change by Mann-Kendall test showed a significant increase in the frequency of abnormalities occurring in most stations.

Selection of suitable location at city for special work is a main topic for program civil program and spatial organization. Between different locations at cities, mosque is a holy and religious location that connect religious and cultural and social and economic relations together at city that has main effect on the other civil usages and their benefits that totally for civil development. The study survived to location’s spatial pattern by GIS software based on methods of spatial statistics and was used different methods of spatial statistics such analysis dendrogram, central mean, standard distance and hot spots. Also, by looking at the maps and information obtained from these analyzes, we find that the central part of the research boundary is the concentration of the population and the number of mosques more than the other areas. The results of this research show that the eastern and western parts of the area have the highest priority for the construction and placement of the mosque, while the legal and functional scope of the surrounding mosques is also considered and maintained. It is important to take into account the routes to the current mosques and the mosques to be foreseen and to be built, which should be considered by the planner as one of the main priorities in the field of placement.

Selection of suitable location at city for special work is a main topic for program civil program and spatial organization. Between different locations at cities, mosque is a holy and religious location that connect religious and cultural and social and economic relations together at city that has main effect on the other civil usages and their benefits that totally for civil development. The study survived to location’s spatial pattern by GIS software based on methods of spatial statistics and was used different methods of spatial statistics such analysis dendrogram, central mean, standard distance and hot spots. Also, by looking at the maps and information obtained from these analyzes, we find that the central part of the research boundary is the concentration of the population and the number of mosques more than the other areas. The results of this research show that the eastern and western parts of the area have the highest priority for the construction and placement of the mosque, while the legal and functional scope of the surrounding mosques is also considered and maintained. It is important to take into account the routes to the current mosques and the mosques to be foreseen and to be built, which should be considered by the planner as one of the main priorities in the field of placement.