1) heavy dust storm
特强沙尘暴
1.
Based on FY-2 infrared images and the reanalysis data for six hours of NCEP(1°×1°),the heavy dust storm process occurred on 13 April 2007 in the middle west part of Hexi corridor is analyzed,particularly the cloud head of the descending jet was tracked and the gravitational instability,conditional symmetric instability and conditional instability are diagnosed in detail.
2007年4月13日在河西走廊中西部发生了特强沙尘暴,极大风速25m/s,最小能见度50m。
2.
Based on the past research works we theoretically analyzed the formation mechanism of heavy dust storm and discussed the action of atmospheric strong advection to heavy dust storm (black wind).
在总结过去研究结果的基础上,对特强沙尘暴的发生机制进行了进一步的理论分析,探讨了大气强对流对特强沙尘暴(黑风)形成的作用;从物理上系统解释了特强沙尘暴天气的沙尘壁特征;概述了特强沙尘暴的大气沙尘粒子尺度和垂直分布;定性评估了沙尘暴的直接和间接、短期和长期气候效应;最后,还讨论了沙尘暴研究中存在的一些关键科学问题。
2) severe sandstorm
特强沙尘暴
1.
In this paper the heavy sandstorms are that whose shortest visibility is less than 500 m, and the severe sandstorms less than 200 m.
从陕西1954—2003年所有沙尘暴记录所对应的3次或4次定时能见度观测资料中挑出最小能见度小于500m的作为强沙尘暴记录,小于200m的作为特强沙尘暴记录。
3) heavy and extra-heavy sandstorm
强和特强沙尘暴
1.
During a year,sandstorm,heavy and extra-heavy sandstorm happened frequently in March,April and May in spring,and among them,it happened most frequently in April.
在一年内,沙尘暴、强和特强沙尘暴集中出现在春季的3~5月份,4月份最多,沙尘暴下旬相对集中,上、下旬是大、小范围强和特强沙尘暴易发时段。
4) strong dust storm
强沙尘暴
1.
A medium-range synoptic analysis of Strong dust storm on 12 April 2000;
“4.12”强沙尘暴天气中期分析
2.
In this paper,the dustfall characteristics during the period from April to June and the strong dust storm events in a zone sheltered by 24-year-old artificially afforested forest of Populus simonii for sand fixation over the Horqin Sandland are studied by measuring some parameters of dustfall at some field stationed observation sites.
采用野外定位实测法,连续两年对科尔沁沙地24龄人工固沙杨树(Populussimonii)林庇护区内4～6月份及强沙尘暴事件中的降尘特征进行了观测研究。
3.
By using the reanalysis data of NCEP(1°×1°),the dry intrusion characteristic of a strong dust storm process occurred in the Hexi Corridor from April 9 to 10,2006 was analyzed.
使用NCEP(1°×1°)每天4次的再分析资料对2006年4月9~10日发生在甘肃省河西走廊的一次强沙尘暴天气进行了诊断分析。
5) strong sandstorm
强沙尘暴
1.
This paper researched the characteristics and causes of strong sandstorms invading the middle area of Gansu through analyzing the weather system by using the high and surface data from 1970 to 2006.
利用1970—2006年甘肃中部13个县(市)的21例沙尘暴天气过程的各时次高空和地面资料,通过分析沙尘暴过程的影响系统,来研究甘肃中部近年来强沙尘暴天气频繁入侵的成因及特点。
2.
The strong sandstorm and cold wave weather process were occurred from the west toward the east in Hetian area during Apr.
2006年4月9日20时开始,和田地区自西向东出现了强沙尘暴、寒潮天气过程。
3.
The high-circumfluent pattern of strong sandstorm in Gansu province from 1995 to 2002 was analyzed by using the high and surface meteorological data.
利用探空、地面资料分析了1955—2002年甘肃省发生强沙尘暴天气的环流特征,揭示出甘肃沙尘暴天气的5种环流类型:冷锋后偏西型、强锋区下动量下传型、冷高压南部型、热低压前部型和河西小槽型的平均环流场特征。
6) severe dust storms
强沙尘暴
1.
For summer clustering severe dust storms.
文章利用我国科学家自主研发的GRAPES-DAM沙尘气溶胶模式对2005年7月一次罕见的影响河西走廊地区的群发性强沙尘暴进行了数值模拟,对夏季小概率强沙尘暴灾害天气的可预报性进行了个例研究。
2.
Using gridded upper-air and surface wind data extracted from the NCEP/DOE reanalysis-2 project and the time series of severe dust storms occurred over northern China in spring from 1979 to 2002,the relationship between the severe dust storm frequency and the Asian tropospheric wind field is examined.
利用1979~2002年中国北方春季典型强沙尘暴日数序列和亚洲地区等压面及地面以上10 m高度风场资料,分析了北方春季强沙尘暴活动与同期各层风场的关系。
补充资料：沙尘暴也有益处
沙尘暴并非一无是处，它所携带的大量沙尘不仅使我国北方得以免受酸雨之苦，而且对韩日两国的酸雨也起到显著的抑制作用。
近年频发的沙尘暴给人们的生活带来不小的影响，它不但危害我国的环境质量，而且波及韩国、日本等东亚地区。但科学家的研究表明，沙尘暴也并非一无是处，它所携带的大量沙尘可以起到抑制我国北方和韩日两国的酸雨的作用。中国科学院大气物理研究所的科学家说，来自亚洲内陆地区的沙尘含有碱性物质，可以中和大气中造成酸雨的酸性物质。专家运用数值模式，量化了沙尘输送对于东亚酸雨分布的影响，结果表明：沙尘及其土壤粒子的中和作用可使中国北方和日韩两国的降水酸性减小。
近年频发的沙尘暴给人们的生活带来不小的影响，它不但危害我国的环境质量，而且波及韩国、日本等东亚地区。但科学家的研究表明，沙尘暴也并非一无是处，它所携带的大量沙尘可以起到抑制我国北方和韩日两国的酸雨的作用。中国科学院大气物理研究所的科学家说，来自亚洲内陆地区的沙尘含有碱性物质，可以中和大气中造成酸雨的酸性物质。专家运用数值模式，量化了沙尘输送对于东亚酸雨分布的影响，结果表明：沙尘及其土壤粒子的中和作用可使中国北方和日韩两国的降水酸性减小。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条