Abstract
Measurements were performed in spring 2001 and 2002 to determine the characteristics of soil dust in the Chinese desert region of Dunhuang, one of the ground sites of the Asia-Pacific Regional Aerosol Characterization Experiment (ACE-Asia). The mean mass concentrations of total suspended particle matter during the spring of 2001 and 2002 were 317 μg m-3 and 307 μg m-3, respectively. Eleven dust storm events were observed with a mean aerosol concentration of 1095 μg m-3, while the non-dusty days with calm or weak wind speed had a background aerosol loading of 196 μg m-3 on average in the springtime. The main minerals detected in the aerosol samples by X-ray diffraction were illite, kaolinite, chlorite, quartz, feldspar, calcite and dolomite. Gypsum, halite and amphibole were also detected in a few samples. The mineralogical data also show that Asian dust is characterized by a kaolinite to chlorite (K/C) ratio lower than 1 whereas Saharan dust exhibits a K/C ratio larger than 2. Air mass back-trajectory analysis show that three families of pathways are associated with the aerosol particle transport to Dunhuang, but these have similar K/C ratios, which further demonstrates that the mineralogical characteristics of Asian dust are different from African dust.
| Original language | English |
|---|---|
| Pages (from-to) | 291-298 |
| Number of pages | 8 |
| Journal | Advances in Atmospheric Sciences |
| Volume | 23 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2006 Mar |
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Keywords
- Clay ratio
- Mass concentration
- Mineralogical composition
- Soil dust
ASJC Scopus subject areas
- Atmospheric Science
Cite this
Mass concentration and mineralogical characteristics of aerosol particles collected at Dunhuang during ACE-Asia. / Shen, Zhenxing; Cao, Junji; Li, Xuxiang; Okuda, Tomoaki; Wang, Yaqiang; Zhang, Xiaoye.
In: Advances in Atmospheric Sciences, Vol. 23, No. 2, 03.2006, p. 291-298.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mass concentration and mineralogical characteristics of aerosol particles collected at Dunhuang during ACE-Asia
AU - Shen, Zhenxing
AU - Cao, Junji
AU - Li, Xuxiang
AU - Okuda, Tomoaki
AU - Wang, Yaqiang
AU - Zhang, Xiaoye
PY - 2006/3
Y1 - 2006/3
N2 - Measurements were performed in spring 2001 and 2002 to determine the characteristics of soil dust in the Chinese desert region of Dunhuang, one of the ground sites of the Asia-Pacific Regional Aerosol Characterization Experiment (ACE-Asia). The mean mass concentrations of total suspended particle matter during the spring of 2001 and 2002 were 317 μg m-3 and 307 μg m-3, respectively. Eleven dust storm events were observed with a mean aerosol concentration of 1095 μg m-3, while the non-dusty days with calm or weak wind speed had a background aerosol loading of 196 μg m-3 on average in the springtime. The main minerals detected in the aerosol samples by X-ray diffraction were illite, kaolinite, chlorite, quartz, feldspar, calcite and dolomite. Gypsum, halite and amphibole were also detected in a few samples. The mineralogical data also show that Asian dust is characterized by a kaolinite to chlorite (K/C) ratio lower than 1 whereas Saharan dust exhibits a K/C ratio larger than 2. Air mass back-trajectory analysis show that three families of pathways are associated with the aerosol particle transport to Dunhuang, but these have similar K/C ratios, which further demonstrates that the mineralogical characteristics of Asian dust are different from African dust.
AB - Measurements were performed in spring 2001 and 2002 to determine the characteristics of soil dust in the Chinese desert region of Dunhuang, one of the ground sites of the Asia-Pacific Regional Aerosol Characterization Experiment (ACE-Asia). The mean mass concentrations of total suspended particle matter during the spring of 2001 and 2002 were 317 μg m-3 and 307 μg m-3, respectively. Eleven dust storm events were observed with a mean aerosol concentration of 1095 μg m-3, while the non-dusty days with calm or weak wind speed had a background aerosol loading of 196 μg m-3 on average in the springtime. The main minerals detected in the aerosol samples by X-ray diffraction were illite, kaolinite, chlorite, quartz, feldspar, calcite and dolomite. Gypsum, halite and amphibole were also detected in a few samples. The mineralogical data also show that Asian dust is characterized by a kaolinite to chlorite (K/C) ratio lower than 1 whereas Saharan dust exhibits a K/C ratio larger than 2. Air mass back-trajectory analysis show that three families of pathways are associated with the aerosol particle transport to Dunhuang, but these have similar K/C ratios, which further demonstrates that the mineralogical characteristics of Asian dust are different from African dust.
KW - Clay ratio
KW - Mass concentration
KW - Mineralogical composition
KW - Soil dust
UR - http://www.scopus.com/inward/record.url?scp=33646576874&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33646576874&partnerID=8YFLogxK
U2 - 10.1007/s00376-006-0291-z
DO - 10.1007/s00376-006-0291-z
M3 - Article
VL - 23
SP - 291
EP - 298
JO - Advances in Atmospheric Sciences
JF - Advances in Atmospheric Sciences
SN - 0256-1530
IS - 2
ER -