Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2014.05.007 |
Application of a satellite-based aridity index in dust source regions of northeast Asia | |
Kimura, Reiji1; Moriyama, Masao2 | |
通讯作者 | Kimura, Reiji |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2014 |
卷号 | 109页码:31-38 |
英文摘要 | A modified temperature-vegetation dryness index based on land-surface temperature was used to represent land-surface aridity in northeast Asia. Past results indicated that saltation activity and dust emission did not often occur in northeast Asia when soil water content was greater than 4% and normalized soil water content was greater than 0.2. The threshold value of the modified temperature-vegetation dryness index for dust emissions was assumed to be 0.8 when the normalized soil water content was 0.2. However, a detailed grid of meteorological data is needed to predict the modified temperature-vegetation dryness index; therefore, large-scale use is presently difficult. A new satellite-based aridity index using day/night land-surface temperature differences has been introduced and tested to represent the modified temperature-vegetation dryness index. The satellite-based aridity index was 0.03 when the modified temperature-vegetation dryness index was 0.8, which is the threshold for dust emissions. The relationship between coverage of satellite-based aridity index values greater than 0.03 in the target area (35 degrees N-45 degrees N and 100 degrees E-115 degrees E) and Asian dust events over Japan was analyzed for 2000-2011. Results indicated that coverage of satellite-based aridity-index values greater than 0.03 significantly affects Asian dust events over Japan (R-2 = 0.4117, p < 0.05). (C) 2014 Elsevier Ltd. All rights reserved. |
英文关键词 | Arid regions Asian dust Land-surface temperature Northeast Asia Remote sensing |
类型 | Article |
语种 | 英语 |
国家 | Japan |
收录类别 | SCI-E |
WOS记录号 | WOS:000340017700005 |
WOS关键词 | LOESS PLATEAU ; PARTICULATE-POLLUTION ; SOIL-MOISTURE ; WIND EROSION ; SURFACE SOIL ; LAND-COVER ; CHINA ; STORMS ; JAPAN ; EVAPOTRANSPIRATION |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183036 |
作者单位 | 1.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan; 2.Nagasaki Univ, Grad Sch Engn, Nagasaki 8528521, Japan |
推荐引用方式 GB/T 7714 | Kimura, Reiji,Moriyama, Masao. Application of a satellite-based aridity index in dust source regions of northeast Asia[J],2014,109:31-38. |
APA | Kimura, Reiji,&Moriyama, Masao.(2014).Application of a satellite-based aridity index in dust source regions of northeast Asia.JOURNAL OF ARID ENVIRONMENTS,109,31-38. |
MLA | Kimura, Reiji,et al."Application of a satellite-based aridity index in dust source regions of northeast Asia".JOURNAL OF ARID ENVIRONMENTS 109(2014):31-38. |
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