Abstract
According to the World Meteorological Organization (WMO), dust storms are the result of strong atmospheric turbulence near the surface that results in the removal of large volumes of soil particles and their entry into the atmosphere, reducing horizontal visibility to less than 1000 meters. Dust storms are always known as one of the natural hazards that affect various sectors such as health, agriculture, transportation, etc. and have very wide consequences, especially reduced soil fertility, damage to crops, drying of cover. A 43-year estimate of Asian dust emissions shows that climate has the greatest impact on dust emissions and the occurrence of dust storms compared to the desertification process. Climate change has a significant impact on the frequency and severity of dust storms. Finding a relationship between pressure distribution, maximum temperature and wind can help predict the impact of future climate change or the frequency and severity of dust storms in the future. Therefore, by examining the potential changes in the distribution of pressure, temperature and wind speed, it can be predicted that the region is likely to be affected by more severe storms or if they will occur with less intensity. Therefore, it is necessary to study the phenomena related to dust and to identify the areas of active origin of dust production and to study the strategies to deal with and prevent it in the affected areas. Identifying major areas of dust emissions will, to some extent, make it possible to estimate the amount of dust emissions in response to environmental conditions in these areas by focusing on critical areas. With such knowledge, it is possible to modify dust models and the effects of climate change on future dust emissions can be assessed. Also, by examining the relationship between climatic parameters affecting the occurrence of this phenomenon, the dust situation can be investigated by considering different scenarios of climate change, which requires comprehensive and long-term statistical studies of climate variables. In fact, by examining the impact of climate change on dust production, it will be possible to estimate the dust emission situation in response to changes in these parameters and environmental conditions by focusing on these areas. The persistence of the dust phenomenon has an effective role in the incidence of diseases, its destructive effects, the persistence of air pollution and the reduction of the radiation budget. Frequency analysis and prediction of the occurrence of long-term delays in the study area is of great importance. Also, identifying areas with dust days with high durability is very effective in managing adverse effects.
Speaker:
Tayebe Mesbahzadeh is Associate Prof. at University of Tehran and Member of Desert Net International (DNI), a scientific network for international research on desertification. She got B.sc in soil science M.Sc. in Desert Management Ph.D. in Combating of desertification. Main research interests are wind erosion, geomorphology, climate change, sedimentology.
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