sand dust atmosphere
2020-07-06T22:07:23+00:00
沙尘大气电磁波多重散射及衰减 物理学报
For the sand and dust storms in Tengger desert and the blowing sand and dust atmosphere in north China, the attenuations at 93 GHz are analysed In Tengger desert, the 2023年11月3日 Sand and dust storms usually occur when strong winds lift large amounts of sand and dust from bare, dry soils into the atmosphere Over the last decade, Sand and Dust Storms World Meteorological Organization2022年12月30日 Sucking sand and dust into the turbine engine will cause erosion of the engine and performance degradation which may lead to flight accident In order to Impact of sand and dust storms on aviation safety
沙尘大气物理约束方程研究
Ideal analysis of the equations shows the following findings: (1) the density of the sanddust atmosphere is bigger than that of the pure atmosphere, which will reduce the velocities of 2022年6月15日 Sand and dust storms (SDS) is a powerful natural disaster, derived from and driven by synoptic systems, such as cyclone, frontal forcing, upperlevel cutoff low Impact of sand and dust storms on the atmospheric 2021年2月17日 Dustsand storms do not originate in China alone and they do not stop at the Chinese borders While China has made fruitful efforts in controlling desertification, Dustsand storms in China: disastrous effects and mitigation strategies
Evolution Characteristics of SandDust Weather
Based on the identification methods and several characteristic quantities (including duration and impact range) of sanddust processes defined in the Operational Regulations of Monitoring and Evaluation for Regional 2023年10月30日 The mass of sulfate particles in the atmosphere decreases much faster than dust, such that the global columnintegrated mass of sulfur is reduced to about two Chicxulub impact winter sustained by fine silicate dust2008年8月25日 Sand/dust storm processes in Northeast Asia and associated largescale circulations Centre for Atmosphere Watch and Services (CAWAS), Chinese Academy of Meteorological Sciences, China Meteorological Administration (CMA), Beijing , China C H Zhou × Centre for Atmosphere Watch and Services (CAWAS), Chinese Academy ACP Metrics Sand/dust storm processes in Northeast Asia
Atmosphere Free FullText The Indirect Impact
2021年3月6日 Changes in atmospheric dust loads have a major impact on the global climate system through geophysical processes or biochemical cycles [1,2,3,4,5,6,7,8,9]Climate change, especially the change in 2012年5月29日 The clouds in turn keep the long wave radiations from the earth within the atmosphere Sand and dust storms have local and global effects on climate changes, while climatic changes in turn can change the position and intensity of dust sources in the world Table 1 shows global statistics on SDS based on (Ginoux et al 2001) There exists an A review of techniques and technologies for sand and dust 2021年12月14日 Abstract Partially due to global climate change, sand and dust storms (SDSs) have occurred more and more frequently, yet a detailed measurement of SDS events at different heights is still lacking Here we provide a highfrequency observation from the Qingtu Lake Observation Array (QLOA), China The wind and dust information were ESSD Highfrequency observation during sand and dust
Aerobiology and the global transport of desert dust
2006年11月1日 Dust clouds generated by storm activity over arid lands can result in soil particulates being transported to altitudes >5 km [1]The Sahara–Sahel region of Africa is the largest source of aerosolized soil dust on Earth, contributing as much as one billion metric tons of dust yr −1 to the global atmosphere [2]Deserts continuously discharge dust, but it 2017年8月26日 of sand and dust aerosols was injected into the atmosphere under certain specific weather backgrounds annually The particles suspended in the atmosphere driven by sand and dust storms have significant impacts on atmospheric environment [1], transportation, marine ecology (eg deposition in the ocean) [2], and acid rain nucleation A newgeneration sand and dust storm forecasting 2023年2月20日 徐冉, 张碧辉, 安林昌, 李雷, 迟茜元, 江琪 2000~2021年中国沙尘传输路径特征及气象成因分析 [J] 中国环境科学, 2023, 43 (9): 44504458 XU Ran, ZHANG Bihui, AN Linchang, LI Lei, CHI Xiyuan, JIANG Qi Analysis of sand and dust storm transport paths characteristics and meteorological causes in China from 2000 2000~2021年中国沙尘传输路径特征及气象成因分析
Performance Evaluation of FSO Communications under SandDust
However, the performance of an FSO system is dependent on atmospheric conditions, particularly in the presence of aerosols (eg, fog, smoke, sanddust, and water vapour) which result in scattering and absorption effects [ 3 – 5 ] Combined with aerosols, sanddust particles may cause serious transmission interruption2023年1月16日 The dust event from 12 January to 17 January 2021 (“112 event”) is the first dust process in 2021 and the earliest dust event in the last two decades The dust event from 14 to 18 March 2021 (“315 event”) was the strongest dust storm in the past decade Distribution, transport, and impact on urban air quality of these two typical dust events Atmosphere Free FullText Distribution, Transport, and 2021年7月15日 Barren ground and sites with low coverage by vegetation (eg, dunes, soil surfaces, dry lakes, and riverbeds) are the main source areas of sand and dust storms (SDS) The understanding of causes, processes (abrasion, deflation, transport, deposition), and influencing factors of sandy and dusty particles moving by wind both in the boundary JRFM Free FullText Causes and Effects of Sand and Dust
dust National Geographic Society
2023年10月19日 Dust is a collection of microscopic particles of material Dust is heavy enough to see and light enough to be carried by the wind Dust can be made up of pollen, bacteria, smoke, ash, salt crystals from 2022年1月1日 1 Introduction Sand and dust storms are atmospheric phenomena occurring in arid and semiarid regions of the world They are usually formed by strong pressure gradients from cyclones resulting in a drastic increase in wind flow over a large area (Zhao and Zhao, 2006; Titos et al, 2017; Francis et al, 2018; She et al, Characteristics of the severe March 2021 Gobi Desert dust 2017年3月13日 Atmospheric aerosols play an important role in Earth's radiative balance Mineral dust, which is the most abundant aerosol by mass, is lofted into the atmosphere when strong surface winds pass Warming or cooling dust? Nature Geoscience
Sand and Dust Storm Warning Advisory and Assessment System
2 天之前 Sand and Dust Storm Warning Advisory and Assessment System SDSWAS enhances the ability of countries to deliver timely, quality sand and dust storm forecasts, observations, information and knowledge to users through an international partnership of research and operational communities2022年5月9日 Objective The quality of captured images tends to yellowish color distortion, reduced contrast, and detailed information loss in the sand dust atmosphere due to the suspended particles derived incident light absorption and scattering The issues of 沙尘图像色彩恢复及增强卷积神经网络2016年5月5日 For the sand and dust storms in Tengger desert and the blowing sand and dust atmosphere in north China, the attenuations at 93 GHz are analysed In Tengger desert, the attenuation and the multiple Multiple scattering and attenuation for electromagnetic
胡非中国科学院大学UCAS SEP 教育业务接入平台
2018年12月31日 （196） 2000—2002年沙尘现象对北京大气中PM10质量浓度的影响评估, Effect of SandDust on the Concentration of Atmospheric PM10 in Beijing during 2000 to 2002, 环境科学研究, 2004, 第 2 作者2022年9月20日 The biggest sanddust storm from Mongolia in the past decade swept across northern China on March 15, 2021 Before this sudden outbreak, the number of sanddust storms in northern China had been decreasing for 50 years Wind and sand resources are the two key elements for sanddust storms to occur With an a Environmental Stronger winds increase the sanddust storm risk in northern 2020年11月6日 Marking the start of the United Nations Decade of Ocean Science for Sustainable Development (2021–2030), this report explores the impacts of sand and dust storms on oceans—their ecosystem functions, goods and services—which are potentially numerous and wideranging Sand and dust storms thus warrant continued careful New report explores the impact of sand and dust storms
Atmosphere Free FullText Satellite Monitoring
2021年3月15日 Sand and dust storms are severe environmental issues and air pollution events occurring in arid and semiarid regions of the world [1,2]In northeast Asia, deserts and sandy lands distributed in Mongolia 2013年11月25日 The research results have very important reference value for quantitative study of the influence of aerosol on atmosphere physics and chemistry process and monitoring of sanddust weather and air pollution of this area 1 Introduction Sand dust aerosol, originated from arid and semiarid region of China, is the main component of Observation Study on the Size Distribution of Sand Dust Aerosol 2023年1月26日 Dust storms are atmospheric phenomena caused by wind erosion in deserts and scrublands, which raise dust particles from the surface and transport them miles away depending on meteorological conditions (Shahsavani et al, 2020)These events are responsible for largescale transport of particulate matter (Argyropoulos et al, 2020) that Impact of sand and dust storms on tropospheric parameter
Sand/dust storm processes in Northeast Asia and
2020年7月31日 teractions and influences between sand/dust storm and climate (Zhang et al, 2002) It is found that Asian sand/dust originated from the desert area by surface wind in Asia is transported through westerly jet stream aloft to a long distance that includes North Pacific and North America Although changes in atmospheric dust concentrations 2022年8月22日 Using 30 years of satellite observations, two sand and dust storms (SDS) source locations (hotspots) were detected on the southern side of the Mesopotamian Flood Plain Around 40 million people in the region are affected by the two hotspots, including populations in Iraq, Iran, Kuwait, Saudi Arabia, Qatar, Bahrain, and Emirates Both Atmosphere Free FullText A Success Story in Controlling Sand 2023年7月12日 In some regions, in fact, the number of sand and dust particles in the atmosphere had doubled between 1900 and 2000 This trend has continued as humancaused climate change continues to worsen A global concern The rising concerns led the UN General Assembly to proclaim 12 July 2023 the firstever International Day of UN issues global alert to combat severe sand and dust storms
Newly identified climatically and environmentally
2021年12月17日 50 character The environmental and climatic effects of dust on clouds and climat ic fee dbacks, atmospheric chemistry, marine environment, and cryosphere atmosphere feedbacks at high latitudes are discussed , and regional scale modelling of dust atmospheric transport from potential Arctic dust sources is demonstrated 2023年9月5日 The difference in meteorological factors (such as weather phenomena, wind speed, and visibility) of sand–dust weather between China and Mongolia from 2011 to 2021 was analyzed using meteorological observational data and international exchange of meteorological observation data Additionally, consistency analysis was performed by Analysis and Research on the Differences in Observed Data of Sand–Dust 2023年1月31日 Climaterelated hazards such as sand and dust storms (SDS) have various impacts on human health, socioeconomy, environment, and agroecosystems Iran has been severely affected by domestic and external SDS during the last two decades Considering the fragile economy of Iran’s rural areas and the strong dependence of livelihood on Atmosphere Free FullText Assessment of Rural Vulnerability to Sand
Sources, Drivers, and Impacts of Sand and Dust Storms: A
2023年3月1日 The occurrence of sand and dust stormsSand and dust storms (SDS) has become a common phenomenon at a global scale belowcloud (via rain drop scavenging of atmospheric dust particles) Coarsegrained dust particles (larger than 2 μm) are generally removed from the atmosphere through dry deposition, whereas finegrained particles are 2023年10月19日 Dust is a collection of microscopic particles of material Dust is heavy enough to see and light enough to be carried by the wind Dust can be made up of pollen, bacteria, smoke, ash, salt crystals from dust National Geographic Society2018年12月31日 （196） 2000—2002年沙尘现象对北京大气中PM10质量浓度的影响评估, Effect of SandDust on the Concentration of Atmospheric PM10 in Beijing during 2000 to 2002, 环境科学研究, 2004, 第 2 作者胡非中国科学院大学UCAS SEP 教育业务接入平台
Atmosphere Free FullText Coupling Effects of
2022年10月6日 The coupling effects of sandstorm and dust from coal bases themselves can have a major impact on the atmospheric environment as well as on human health The typical coal resource city of Wuhai in 2022年5月27日 Distribution of vegetation across the geographical area is also responsible for the occurrence of sand and dust storm in that area The sand and dust storms are frequent in plain area with sparse vegetation, and these features allow winds to build momentum to produce stronger winds that drive more dust into the atmosphere 632 Nature of Sand and Dust Storm in South Asian Region2019年9月15日 Sand/dust weather is a kind of disastrous event, which brings harmful impacts on environment and human activities (Zhou et al, 1996; Ge et al, 2016; Lee and Sohn, 2011) Atmospheric dust dynamics in southern Central Asia: Implications for buildup of Tajikistan loess sediments Atmospheric Research, Volume 229, 2019, pp 7485Changes of the relationship between spring sand dust
Atmosphere Free FullText A Possible Linkage between Dust
2021年1月29日 Yellow sand, or Hwangsa in Korean, is a frequent meteorological phenomenon in which sand dust is suspended in the air and gradually falls to the surface []Although an artificial factor (eg, urbanization) may affect dust emission in northeast Asia [2,3], the yellow sand is mainly related to atmospheric circulation changesDust events 2014年1月8日 沙尘天气过程研究中，起沙过程是沙尘传输和沉降的基础，沙尘模式中的起沙参数化方案决定了能否准确模拟和预报沙尘天气。试验观测和数值模拟是研究起沙过程的重要途径。基于风蚀起沙的物理机制，总结了起沙机制和起沙特征的研究成果，介绍了风蚀起沙的主要影响因子，回顾了起沙关键参数 沙尘天气过程起沙特征的观测试验和参数化研究进展2022年1月1日 1 Introduction Sand and dust storms are atmospheric phenomena occurring in arid and semiarid regions of the world They are usually formed by strong pressure gradients from cyclones resulting in a drastic increase in wind flow over a large area (Zhao and Zhao, 2006; Titos et al, 2017; Francis et al, 2018; She et al, Characteristics of the severe March 2021 Gobi Desert dust
A scheme to detect the intensity of dusty weather by
2023年2月10日 Therefore, the detection of sand and dust weather is necessary to issue sand and dust weather warnings, to reduce the harm of sand and dust storms to the human being (AlHemoud et al, Retrieval of vertical structure of raindrop size distribution from equatorial atmosphere radar and boundary layer radar EmergSciJ, 6 (2022), pp 4484592008年8月25日 Sand/dust storm processes in Northeast Asia and associated largescale circulations Centre for Atmosphere Watch and Services (CAWAS), Chinese Academy of Meteorological Sciences, China Meteorological Administration (CMA), Beijing , China C H Zhou × Centre for Atmosphere Watch and Services (CAWAS), Chinese Academy ACP Metrics Sand/dust storm processes in Northeast Asia 2021年3月6日 Changes in atmospheric dust loads have a major impact on the global climate system through geophysical processes or biochemical cycles [1,2,3,4,5,6,7,8,9]Climate change, especially the change in Atmosphere Free FullText The Indirect Impact
A review of techniques and technologies for sand and dust
2012年5月29日 The clouds in turn keep the long wave radiations from the earth within the atmosphere Sand and dust storms have local and global effects on climate changes, while climatic changes in turn can change the position and intensity of dust sources in the world Table 1 shows global statistics on SDS based on (Ginoux et al 2001) There exists an 2021年12月14日 Abstract Partially due to global climate change, sand and dust storms (SDSs) have occurred more and more frequently, yet a detailed measurement of SDS events at different heights is still lacking Here we provide a highfrequency observation from the Qingtu Lake Observation Array (QLOA), China The wind and dust information were ESSD Highfrequency observation during sand and dust 2006年11月1日 Dust clouds generated by storm activity over arid lands can result in soil particulates being transported to altitudes >5 km [1]The Sahara–Sahel region of Africa is the largest source of aerosolized soil dust on Earth, contributing as much as one billion metric tons of dust yr −1 to the global atmosphere [2]Deserts continuously discharge dust, but it Aerobiology and the global transport of desert dust
A newgeneration sand and dust storm forecasting
2017年8月26日 of sand and dust aerosols was injected into the atmosphere under certain specific weather backgrounds annually The particles suspended in the atmosphere driven by sand and dust storms have significant impacts on atmospheric environment [1], transportation, marine ecology (eg deposition in the ocean) [2], and acid rain nucleation 2023年2月20日 徐冉, 张碧辉, 安林昌, 李雷, 迟茜元, 江琪 2000~2021年中国沙尘传输路径特征及气象成因分析 [J] 中国环境科学, 2023, 43 (9): 44504458 XU Ran, ZHANG Bihui, AN Linchang, LI Lei, CHI Xiyuan, JIANG Qi Analysis of sand and dust storm transport paths characteristics and meteorological causes in China from 2000 2000~2021年中国沙尘传输路径特征及气象成因分析However, the performance of an FSO system is dependent on atmospheric conditions, particularly in the presence of aerosols (eg, fog, smoke, sanddust, and water vapour) which result in scattering and absorption effects [ 3 – 5 ] Combined with aerosols, sanddust particles may cause serious transmission interruptionPerformance Evaluation of FSO Communications under SandDust
Atmosphere Free FullText Distribution, Transport, and
2023年1月16日 The dust event from 12 January to 17 January 2021 (“112 event”) is the first dust process in 2021 and the earliest dust event in the last two decades The dust event from 14 to 18 March 2021 (“315 event”) was the strongest dust storm in the past decade Distribution, transport, and impact on urban air quality of these two typical dust events 2021年7月15日 Barren ground and sites with low coverage by vegetation (eg, dunes, soil surfaces, dry lakes, and riverbeds) are the main source areas of sand and dust storms (SDS) The understanding of causes, processes (abrasion, deflation, transport, deposition), and influencing factors of sandy and dusty particles moving by wind both in the boundary JRFM Free FullText Causes and Effects of Sand and Dust