沙尘

PEN薄带在沙尘环境中磨粒磨损分形特征研究

Fractal Characteristics of Abrasive Wear of PEN Tape in Sand Dust Environment

应用MODIS数据研究沙尘信息定量化方法探讨

Discuss on Quantitative Method Study of Sand-dust Information Using MODIS Data

2000&2002年沙尘现象对北京大气中PM（10）质量浓度的影响评估

Effect of Sand-Dust on the Concentration of Atmospheric PM_ ( 10 ) in Beijing during 2000 to 2002

分析表明，预报系统不仅能定性预报沙尘天气的空间分布与时间演变，而且能定量预报沙尘源地、大气中的沙尘浓度、沙尘的输送以及沉降。Air（初三适用）

Analysis shows that the system not only can quantitatively predicate the spatial distribution and temporal change of the dust , but also the source , density in the air , transfer and deposition .

土壤风沙尘和扬尘中含量最高的元素为Al，煤烟尘中含量最高的元素为EC，钢铁尘中含量最高的元素为Fe，建筑水泥尘中含量最高的元素为Ca。

The maximum content in these dusts were Al in soil dust , EC in coal dust , Fe in steel dust and Ca in cement dust .

PI薄带在沙尘环境中的平均磨损率比在无沙尘环境中的平均磨损率高出4个数量级。

The mean wear rate of PI tape in the sand dust environment is about 4 orders higher than that in the clean air environment .

沙尘源区AVHRR数据地表温度时序变化与沙尘干量TSP数据的对比分析&以2001年春季北方强沙尘过程为例

COMPARISON ANALYSIS OF AVHRR LST DATA AND TSP DATA IN DUST SOURCES REGION & A Case Study During Strong Dust Storm of Spring-Summer in 2001

对中国气象局兰州干旱气象研究所业务化运行的沙尘模式&GRAPESSDM的业务化过程、预报效果及其预报中发现的现象进行了总结。

The operational flow , prediction effects and some problems occurring in the prediction of GRAPES_SDM which is running in IAM are summarized .

根据Mie散射理论用数值法研究了沙尘粒子对大气红外辐射的散射、消光和吸收效率，揭示了不同粒径的沙尘粒子在不同红外辐射波段消光和吸收的特点。

In this paper , the scattering , extinction and absorption efficiency of sand dust is investigated for the infrared radiation in atmosphere on the basis of the Mie theory .

然而，还有一些关键问题尚待解决，例如Bodélé盆地释放这样巨量的沙尘已经维持了多长时间，以及它还能继续多久。

Key questions remain , such as for how long the area has emitted such a huge amount of dust , and how long it will continue .

利用AVL公司提供的商用软件EXCITEDESIGNER计算低气压和沙尘对发动机主轴承和连杆大端轴承工作性能的耦合影响。

The coupling influence of sand-and-dust and low environment pressure on the main bearing and big end one of engine was calculated by the use of the commercial software EXCITE Designer from AVL Company .

就阿拉善地区增多的沙尘天气，政府、国际国内NGO、科学家、专业团体、当地农牧民等多个群体，展开了各种项目。

On the sand dust weather increasing in the A-La-Shan area , the government , international and domestic NGO , the scientists , the professional organization , the local herdsman has taken many projects .

接下来，USGS的调查人员也说明了这种真菌和其他生物如何受到浓密的沙尘云所保护，因而能在始自非洲的长途旅行中存活下来。

USGS investigators then showed how the Aspergillus fungus and other organisms could survive the long trip from Africa protected by dense clouds of dust .

图论在大气化学模式计算和灵敏度分析等中的应用利用STEM－II三维区域尺度大气化学模式，研究了1994年3月1日至14日东亚地区春季沙尘气溶胶对硫化物输送和沉降的影响。

The impact of spring-time mineral aerosols on the transport and deposition of sulfur in East Asia during the period of March 1 through March 14 , 1994 is studied using a three-dimensional regional-scale atmospheric chemistry model ( STEM-II model ) coupled with the mineral dust processes .

利用NCEP再分析资料以及台站观测资料，对可能影响2003年春季我国北方地区沙尘天气异常的气候与环境背景进行了分析。

By using NCEP reanalysis data and station observational data , the climatic and environmental background which may be responsible for the weak spring sandstorm activities for 2003 has been investigated .

沙尘与非沙尘PM2.5都能抑制细胞间通讯，GJIC可能为颗粒物的毒性机制之一。

The composition of PM_ 2.5 from both sources can inhibit GJIC , suggesting decreasing GJIC may be related to the biological mechanisms of toxicity caused by PM_ 2.5 .

结果表明：经过沙尘磨粒磨损的PEN薄带表面形貌表现出二重分形特征，沙尘粒子的犁沟和切削磨损及PEN材料的微观断裂是引起大尺度和小尺度区间分形特征的主要机理。

It is suggested that worn surface of PEN tape by sand dust particles showed bi-fractal characteristics . Ploughing and cutting by sand particles and micro-fracture were found to be the two main mechanisms for each fractal characteristics in large and small scale .

利用NCEP分析资料和常规气象观测资料对造成2006年3月9&10日华北大范围强沙尘天气，产生大风的蒙古气旋快速发展过程进行了分析。

Based on the NCEP-NCAR data and the observational data on March 9-10 , 2006 , a diagnostic analysis is conducted for the development of Mongolia cyclone inducing the severe dust storm .

沙尘天气对黄海海域TSP浓度和沉降通量的贡献表现为从西到东递减，对气溶胶沉降通量的影响主要集中在较大粒径段的颗粒。

The contributions of dust weather to the concentrations and deposition fluxes of TSP reduced with longitude from west to east , and the impact of dust weather on the deposition fluxes of aerosols mainly focused on those of the large particles .

土壤尘的季节平均浓度从夏季逐步上升，至次年春季达到最高（211μg·m-3），表明春季频繁发生的沙尘天气对土壤尘细粒子有重要贡献。

Soil dust concentration increased from a low level in summer to the peak value ( 21 1 μ g · m - 3 ) in spring , suggesting that frequent dust events made a significant contribution to fine soil dust .

另外笔者认为AOD与水平能见度之比值能够较全面地考虑水平和垂直两个方向的要素变化，衡量沙尘天气强度更具有合理意义，值得更深一步的探讨。

In addition , the authors considered that the ratio of AOD to visibility could roundly reflect the factor change in both horizontal and vertical directions , so it was reasonable to measure the intensity of dusty weather .

应用场发射扫描电子显微镜和X射线能谱仪，研究了2005年4月北京市区2次典型沙尘天气PM10样品中矿物单颗粒的形貌、数量-粒度分布和化学组成。

Field emission scanning electron microscopy ( FESEM ) and energy dispersive X-ray spectrometry ( EDX ) were used to obtain the morphology , number-size distribution and chemical compositions of individual mineral particles collected during the two dust storm episodes in April 2005 in Beijing .

定义了使用EPTOMS气溶胶指数定量描述沙尘天气强度的指标体系，并对1998年3&4月间发生的沙尘天气的强度及其演变进行了详细的分析。

The indicator system applying EP / TOMS aerosol index to quantitatively describe the intensity of dust storm was put forward . The intensity and evolution of dust storms that happened during March to April , 1998 , were analyzed in detail .

公元747年，希沙姆宫被埋葬在沙尘之下，直到巴勒斯坦考古学家D.C.Baramki于1934年开始对它进行挖掘工作它才得以重见天日，不幸的是，历史学家们表示担心，100年之内这个古迹可能就会消失了。

Hisham 's Palace was buried underneath the sand in A.D. 747 and remained there until Palestinian archeologist D.C. Baramki began excavating it in 1934 . Sadly , historians fear that the site might not be around in as few as 100 years .

利用AOT和FMF对气溶胶类型进行了划分，得到海洋型、沙尘型、城市/工业型、大陆型、生物燃烧型五种气溶胶类型，并分别描述了各气溶胶类型的分布特征和季节变化。

Then five types of aerosol , marine type , dust type , urban / industry type , continental type and biomass type , are classified using AOT and FMF , and the details of the five kinds of aerosol are described .

结果表明：近地表0.1m处收集到的沙尘物质主要来自于近地表跃移的沙粒，随着高度的增加，降尘中细沙成分越来越少，粉沙成分越来越大。

The results are as follows : the falling sand-dust of 0.1 m height near surface is mainly from saltation matter , the fine sand compositions of falling dust are fewer and the powder sand elements are more .

该文通过对1978年以来的TOMS气溶胶指数分析，揭示出我国北方地区沙尘气溶胶的时空分布特征和长期演变规律，并结合地面辐射资料分析了沙尘气溶胶对太阳辐射的影响。

Based on the analysis of TOMS historical aerosol index data , the spatial and temporal distribution and its trends are studied carefully . The influence on solar radiation of dust aerosol is analyzed using the meteorological observation of radiation and TOMS aerosol index .

把沙尘、黑碳和有机碳的AAEs代入三波段方程中，从而估计出它们的光学特征，并把这些结果同GOCART模式结果和外场实验结果作比较。

Then we put the dust , black carbon , and organic carbon AAEs in the three wavelengths equations , to estimate their optical properties , and to compare the results with GOCART model results and field campaigns observations .

色度分析在沙尘气溶胶成分分析中的应用

The use of color index in analyzing deposited dust in Lanzhou

典型干旱区沙尘气溶胶光学厚度及粒度谱分布的初步分析

Aerosol Optical Thickness and Particle Size Distributions in Typical Arid Region