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Simulated variations of eolian dust from inner Asian deserts at the mid-Pliocene, last glacial maximum, and present day: contributions from the regional tectonic uplift and global climate change
Shi, ZG (Shi, Zhengguo)[1]; Liu, XD (Liu, Xiaodong)[1]; An, ZS (An, Zhisheng)[1]; Yi, BQ (Yi, Bingqi)[2]; Yang, P (Yang, Ping)[2]; Mahowald, N (Mahowald, Natalie)[3]
2011-12-30
Source PublicationCLIMATE DYNAMICS
Volume37Issue:11-12Pages:2289-2301
Subtype期刊论文
AbstractNorthern Tibetan Plateau uplift and global climate change are regarded as two important factors responsible for a remarkable increase in dust concentration originating from inner Asian deserts during the Pliocene-Pleistocene period. Dust cycles during the mid-Pliocene, last glacial maximum (LGM), and present day are simulated with a global climate model, based on reconstructed dust source scenarios, to evaluate the relative contributions of the two factors to the increment of dust sedimentation fluxes. In the focused downwind regions of the Chinese Loess Plateau/North Pacific, the model generally produces a light eolian dust mass accumulation rate (MAR) of 7.1/0.28 g/cm(2)/kyr during the mid-Pliocene, a heavier MAR of 11.6/0.87 g/cm(2)/kyr at present, and the heaviest MAR of 24.5/1.15 g/cm(2)/kyr during the LGM. Our results are in good agreement with marine and terrestrial observations. These MAR increases can be attributed to both regional tectonic uplift and global climate change. Comparatively, the climatic factors, including the ice sheet and sea surface temperature changes, have modulated the regional surface wind field and controlled the intensity of sedimentation flux over the Loess Plateau. The impact of the Tibetan Plateau uplift, which increased the areas of inland deserts, is more important over the North Pacific. The dust MAR has been widely used in previous studies as an indicator of inland Asian aridity; however, based on the present results, the interpretation needs to be considered with greater caution that the MAR is actually not only controlled by the source areas but the surface wind velocity.
KeywordAsian dust Tibetan Plateau uplift Climate change Pliocene Paleoclimate simulation
DOI10.1007/s00382-011-1078-1
Indexed BySCI
Language英语
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10263
Collection古环境研究室
Affiliation1.State Key Laboratory of Loess Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, 10 Fenghui South Road, 710075 Xi’an, China;
2.Texas A&M University, College Station, TX, USA;
3.Cornell University, Ithaca, NY, USA
Recommended Citation
GB/T 7714
Shi, ZG ,Liu, XD ,An, ZS ,et al. Simulated variations of eolian dust from inner Asian deserts at the mid-Pliocene, last glacial maximum, and present day: contributions from the regional tectonic uplift and global climate change[J]. CLIMATE DYNAMICS,2011,37(11-12):2289-2301.
APA Shi, ZG ,Liu, XD ,An, ZS ,Yi, BQ ,Yang, P ,&Mahowald, N .(2011).Simulated variations of eolian dust from inner Asian deserts at the mid-Pliocene, last glacial maximum, and present day: contributions from the regional tectonic uplift and global climate change.CLIMATE DYNAMICS,37(11-12),2289-2301.
MLA Shi, ZG ,et al."Simulated variations of eolian dust from inner Asian deserts at the mid-Pliocene, last glacial maximum, and present day: contributions from the regional tectonic uplift and global climate change".CLIMATE DYNAMICS 37.11-12(2011):2289-2301.
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