the duststorm in tiobet: knowledge and gaps
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The duststorm in Tiobet: knowledge and gaps. Xiang GAO Dept. Environ. Sci. & Eng., Fudan Univ. 4th Apr. 2005. Knowledge Events Chemical component Knowledge gaps Characteristics (geo., chem., etc. ) Source (causes, strength, etc.) - PowerPoint PPT PresentationTRANSCRIPT
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The duststorm in Tiobet:
knowledge and gapsXiang GAODept. Environ. Sci. & Eng., Fudan Univ.
4th Apr. 2005
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KnowledgeEvents
Chemical component
Knowledge gapsCharacteristics (geo., chem., etc. )
Source (causes, strength, etc.)
Potential to East Asia (route, strength, monitoring, etc. )
Approach
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1. KnowledgeEvents: record map
张核真 , 唐小萍 . 西藏沙尘天气发生趋势及时空分布规律 . 西藏科技 , 2003,2: 52-53+62
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1. KnowledgeEvents: hanging dune
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1. KnowledgeEvents: mountain top sand sediment
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1. KnowledgeEvents: satellite image
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1. KnowledgeChemical components
张小曳 , 沈志宝 , 张光宇 , 陈拓 , 柳海燕 . 青藏高原远源西风粉尘与黄土堆积 . 中国科学 (D 辑 ), 1996, 26(2): 147-153 (Chinese version)
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2. Knowledge gapsGeographic (spatial distribution?)
Jie Xuan, Guoliang Liu, Ke Du. Dust emission inventory in Northern China. Atmospheric Environment, 2000, 34: 4565-4570
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Chemical
2. Knowledge gaps
L.Makra, I.Borbely-Kiss, E.Koltay, Y. Chen. Enrichment of desert soil elements in Takla Makan dust aerosol. Nuclear Instruments and Methods in Physics Research B 189 (2002) 214–220
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Chemical (for source apportionment?)
2. Knowledge gaps
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Source
2. Knowledge gaps
Causes:
1. sand source? Yes, but reserves and distributing?
2. vertical transport? Not sufficient, but can be obtained
3. wind: west wind drift, but the strength?
Strength:
Frequency? area affected? and power?
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Potential to East Asia
2. Knowledge gaps
Route:eastward, but through Chengdu or Kunming or Xining?
Strength:1. how far can it affect? 2. the strength compared to northern sources?
Monitoring:1. local PM sampling siting and source apportionment 2. satellite data analysis
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3. Approach
NSFC 2005
申请人:陈立民(复旦大学)
Proposer: Limin CHEN
题目:西藏本地扬沙特征及其对东亚沙尘长距离传输的贡献研究
Title: Characteristics of Tibetan local dust storm and the contribution to long distance transportation of East Asian dust
单位:复旦大学、西藏自治区气候中心、华东师范大学
Institution: Fudan, Climate Center of Tibet, ECNU
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3. Approach
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3. Approach
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The End
Thanks!