干旱区生态环境知识资源中心(Arid): The characterization of Taklamakan dust properties using a multiwavelength Raman polarization lidar in Kashi, China

Arid

DOI	10.5194/acp-20-13817-2020
	The characterization of Taklamakan dust properties using a multiwavelength Raman polarization lidar in Kashi, China
	Hu, Qiaoyun; Wang, Haofei; Goloub, Philippe; Li, Zhengqiang; Veselovskii, Igor; Podvin, Thierry; Li, Kaitao; Korenskiy, Mikhail
通讯作者	Wang, HF
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
EISSN	1680-7324
出版年	2020
卷号	20 期号:22 页码:13817-13834
英文摘要	The Taklamakan desert is an important dust source for the global atmospheric dust budget and a cause of the dust weather in East Asia. The characterization of Taklamakan dust in the source region is still very limited. To fill this gap, the DAO (dust aerosol observation) was conducted in April 2019 in Kashi, China. The Kashi site is about 150 km from the western rim of the Taklamakan desert and is strongly impacted by desert dust aerosols, especially in spring time, i.e., April and May. According to sun-sky photometer measurements, the aerosol optical depth (at 500 nm) varied in the range of 0.07-4.70, and the Angstrom exponent (between 440 and 870 nm) in the range of 0.0-0.8 in April 2019. In this study, we provide the first profiling of the 2 alpha + 3 beta + 3 delta parameters of Taklamakan dust based on a multiwavelength Mie-Raman polarization lidar. For Taklamakan dust, the Angstrom exponent related to the extinction coefficient (EAE, between 355 and 532 nm) is about 0.01 +/- 0.30, and the lidar ratio is found to be 45 +/- 7 sr (51 +/- 8-56 +/- 8 sr) at 532 (355) nm. The particle linear depolarization ratios (PLDRs) are about 0.28-0.32 +/- 0.07 at 355 nm, 0.36 +/- 0.05 at 532 nm and 0.31 +/- 0.05 at 1064 nm. Both lidar ratios and depolarization ratios are higher than the typical values of Central Asian dust in the literature. The difference is probably linked to the fact that observations in the DAO campaign were collected close to the dust source; therefore, there is a large fraction of coarse-mode and giant particles (radius > 20 mu m) in the Taklamakan dust. Apart from dust, fine particles coming from local anthropogenic emissions and long-range transported aerosols are also non-negligible aerosol components. The signatures of pollution emerge when dust concentration decreases. The polluted dust (defined by PLDR532 <= 0.30 and EAE(355-532) >= 0.20) is featured with reduced PLDRs and enhanced EAE(355-532) compared to Taklamakan dust. The mean PLDRs of polluted dust generally distributed in the range of 0.20-0.30. Due to the complexity of the nature of the involved pollutants and their mixing state with dust, the lidar ratios exhibit larger variabilities compared to those of dust. The study provides the first reference of novel characteristics of Taklamakan dust measured by Mie-Raman polarization lidar. The data could contribute to complementing the dust model and improving the accuracy of climate modeling.
类型	Article
语种	英语
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000589919600002
WOS关键词	SPECTRAL-RESOLUTION LIDAR ; SAHARAN DUST ; OPTICAL-PROPERTIES ; DEPOLARIZATION-RATIO ; TAKLIMAKAN DESERT ; MINERAL DUST ; PARTICLE PROPERTIES ; AFRICAN DUST ; AEROSOL ; TRANSPORT
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327537
作者单位	[Hu, Qiaoyun; Goloub, Philippe; Podvin, Thierry] Univ Lille, CNRS, UMR 8518 LOA Lab Opt Atmospher, F-59000 Lille, France; [Wang, Haofei; Li, Zhengqiang; Li, Kaitao] Chinese Acad Sci, Aerosp Informat Res Inst, State Environm Protect Key Lab Satellite Remote S, Beijing 100094, Peoples R China; [Veselovskii, Igor; Korenskiy, Mikhail] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia; [Wang, Haofei] Univ Chinese Acad Sci, Beijing 100101, Peoples R China; [Wang, Haofei] Natl Satellite Meteorol Ctr, Key Lab Radiometr Calibrat & Validat Environm Sat, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Hu, Qiaoyun,Wang, Haofei,Goloub, Philippe,et al. The characterization of Taklamakan dust properties using a multiwavelength Raman polarization lidar in Kashi, China[J],2020,20(22):13817-13834.
APA	Hu, Qiaoyun.,Wang, Haofei.,Goloub, Philippe.,Li, Zhengqiang.,Veselovskii, Igor.,...&Korenskiy, Mikhail.(2020).The characterization of Taklamakan dust properties using a multiwavelength Raman polarization lidar in Kashi, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(22),13817-13834.
MLA	Hu, Qiaoyun,et al."The characterization of Taklamakan dust properties using a multiwavelength Raman polarization lidar in Kashi, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.22(2020):13817-13834.