干旱区生态环境知识资源中心(Arid): Multiyear Observations of Deposition-Mode Ice Nucleating Particles at Two High-Altitude Stations in India

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	Multiyear Observations of Deposition-Mode Ice Nucleating Particles at Two High-Altitude Stations in India
	Wagh Sandeep D; Nagare Baban; More Sanjay D; Kumar Pradeep P
来源期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
出版年	2017
卷号	34 期号:12 页码:1437-1446
英文摘要	Ice nucleating particle (INP) measurements were made at two high-altitude stations in India. Aerosols collected on filter paper at Girawali Observatory, Inter University Center for Astronomy & Astrophysics (IGO), and at the Radio Astronomy Center, Ooty (RAC), were activated in deposition mode using a thermal gradient diffusion chamber to determine the INP concentrations. The measurement campaigns at IGO were conducted during 2011, 2013 and 2014, and at RAC during 2013 and 2014. When the aerosol samples were exposed to an ice supersaturation of between 5% and 23% in the temperature range -17.6℃ to -22℃, the maximum INP number concentration at IGO and RAC was 1.0 L~(-1) and 1.6 L~(-1), respectively. A maximum correlation coefficient of 0.76 was observed between the INP number concentration and ice supersaturation. The airmass trajectories analyzed for the measurement campaigns showed that the Arabian Desert and arid regions were the main INP contributors. Elemental analysis of particles showed the presence of Na, Cl, Si, Al, Fe, Cu, Co, Cd, S, Mn and K, as well as some rare-Earth elements like Mo, Ru, La, Ce, V and Zr. When aerosols in the size range 0.5-20 m were considered, the fraction that acted as INPs was 1: 10~4 to 1: 10~6 at IGO, and 1: 10~3 to 1: 10~4 at RAC. The higher ratio of INPs to aerosols at RAC than IGO may be attributable to the presence of rare-Earth elements observed in the aerosol samples at RAC, which were absent at IGO.
英文关键词	ice nuclei diffusion chamber aerosol high-altitude observation
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6105172
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335872
作者单位	Wagh Sandeep D, Department of Atmospheric and Space Sciences, Savitribai Phule Pune University, Pune, 411007, India.; More Sanjay D, Department of Atmospheric and Space Sciences, Savitribai Phule Pune University, Pune, 411007, India.; Kumar Pradeep P, Department of Atmospheric and Space Sciences, Savitribai Phule Pune University, Pune, 411007, India.; Nagare Baban, Indian Institute of Tropical Meteorology Pashan, Pune, 411008, India.
推荐引用方式 GB/T 7714	Wagh Sandeep D,Nagare Baban,More Sanjay D,et al. Multiyear Observations of Deposition-Mode Ice Nucleating Particles at Two High-Altitude Stations in India[J],2017,34(12):1437-1446.
APA	Wagh Sandeep D,Nagare Baban,More Sanjay D,&Kumar Pradeep P.(2017).Multiyear Observations of Deposition-Mode Ice Nucleating Particles at Two High-Altitude Stations in India.Advances in Atmospheric Sciences,34(12),1437-1446.
MLA	Wagh Sandeep D,et al."Multiyear Observations of Deposition-Mode Ice Nucleating Particles at Two High-Altitude Stations in India".Advances in Atmospheric Sciences 34.12(2017):1437-1446.