نتایج جستجو برای: introduction dust storms

تعداد نتایج: 424222  

   Dust phenomenon is a natural occurrence that occurs widespread in arid and semi-arid regions of the world, especially in the sub-equatorial latitudes. This phenomenon is among the greatest environmental problems in the world. The release of this destructive climatic phenomenon in a scattered manner in the atmosphere varies in size, time and concentration. Since this phenomenon is influenced...

2010
D. P. Mulholland

Introduction: Atmospheric dust is one of the key constituents of the Martian atmosphere, and variations in dust loading can have a profound effect on the development of the mean circulation [1], and affect ice cloud formation [2] and other aspects of the climate system. While parameterisations for predicting rates of dust emission from the surface are now an important part of Martian general ci...

B. Attaeian D. Akhzari M. Bashir Gonbad S. Haghighi

Water scarcity is one of the factors limiting plant growth and development. More than onethird of the global terrestrial ecosystems is located in arid and semi-arid regions. The mostimportant limiting factor for plant growth is water shortage. Drought could significantlychange the natural vegetation cover. Rainfall reduction in Iraq, Turkey and Syria hasreduced vegetation cover so that dust sto...

2013
Haosheng Mu Shinji Otani Masato Shinoda Yae Yokoyama Kazunari Onishi Takenobu Hosoda Mikizo Okamoto Youichi Kurozawa

BACKGROUND Every spring, windblown dust storms damage human health and cause many domestic animal deaths in Mongolia. In particular, mass livestock death results in severe, direct economic loss to inhabitants. However, there is little empirical evidence to demonstrate the long-term effects of dust storm, especially in terms of health-related quality of life (HRQoL) secondary to livestock loss. ...

Journal: :تحقیقات جغرافیایی 0
بهرام نجف پور گروه جغرافیا دانشگاه پیام نور

abstract in recent years, dust storm in western part of iran, especially fars province, caused various problems for people. the aim of this research is the identification of circulation patterns producing dust storms over fars province. for this purpose, firstly the code number 6 of current weather at 12 gmt belongs to 8 synoptic stations during the statistical period of 1992-2003 has been extr...

Iranchr('39')s location on the arid world belt, the occurrence of climate change and global warming and the increased in human interference have resulted in dust storms phenomenon in the western and southwestern parts of the country, especially in Khuzestan province. The present study has been aimed at investigating the existing water resources of the province for the watering operation of the ...

ژورنال: ژئوفیزیک ایران 2020
Abbasali Dadashi-Roudbari Alireza Shakiba Mahmoud Ahmadi,

The research results indicated that wet and dry dust deposition is a function of geographical characteristics. The seasonal wet and dry dust deposition and Fine Particles (PM 2.5) correlation in Iran with elevation, latitude and longitude results that the maximum correlation belongs to height, followed by latitude and longitude; meanwhile height and latitude are strongly and reversely correlate...

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One of the powerful tools in dust storms analysis that have recently found extensive application is atmospheric-chemistry numerical modeling. Spatial and temporal distribution of Middle Eastern dust for a severe dust event during 4-8 July 2009 was analyzed by Weather Research and Forecasting with Chemistry (WRF/Chem) model simulations and remote sensing observations. The HYSPLIT model is applie...

Natural resources play a fundamental role in the economy of country and create the situation to achieve the goals of sustainable society, these valuable resources have to be conserved  and used with care. Destroying the forests and rangelands will lead to a dark future full of poverty, starvation and environmental pollution. Forests and rangelands play a considerable role in reducing air pollut...

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