Temporal asymmetry in aerosol optical characteristics: A case study at a high-altitude station, Hanle, in Ladakh region

被引：10

作者：

Ningombam, Shantikumar S. ^{[1
]}

Bagare, S. P. ^{[1
]}

Srivastava, A. K. ^{[2
]}

Kanawade, V. P. ^{[3
]}

Singh, Rajendra B. ^{[1
]}

Padhy, Sangita K. ^{[1
]}

机构：

[1] Indian Inst Astrophys, 2nd Block Koramangala, Bangalore 560034, Karnataka, India

[2] Indian Inst Trop Meteorol, New Delhi Branch, New Delhi 110060, India

[3] Indian Inst Technol, Dept Civil Engn, Kanpur 208016, Uttar Pradesh, India

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2014年 / 121卷

关键词：

Aerosol optical depth; New-particle formation; Desert-dust; Gaseous precursors; Background aerosols; MANORA PEAK; ASIAN DUST; DEPTH; VARIABILITY; SEASON; OZONE; SITE;

D O I：

10.1016/j.jastp.2014.10.012

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Diurnal features of aerosol optical depth (ACID) at a high-altitude station, Hanle (4500 m amsl) in the western Himalayas, were studied using direct/diffuse solar irradiance measurement from a Sky-radiometer (Prede) during October 2007 to December 2010. The study reveals a diurnal asymmetry in the measured aerosol characteristics, with three types of diurnal variation in AOD. Among them, Types I and II are prominent during pre-monsoon, while Type III dominates during post-monsoon. Type I appears to be associated with new-particle formation process from gaseous precursors, in addition to the combination of anthropogenic and desert-dust aerosols, probably brought by the prevailing westerly/south-westerly winds during the pre-monsoon season. The diurnal feature of the Type II may be attributed by the transported desert-dust aerosols brought by the prevailing winds. Further, Type III may be associated with the aged background aerosols over the region, pertaining to a small contribution from gaseous precursors. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：123 / 131

页数：9

共 34 条

[1]

Babu S.S., 2011, J GEOPHYS RES, V116, P1984

[2] Aerosol optical properties at Mt. Waliguan Observatory, China [J].

Che, Huizheng ;

Wang, Yaqiang ;

Sun, Junying .

ATMOSPHERIC ENVIRONMENT, 2011, 45 (33) :6004-6009

[3] Aerosol optical properties at Nam Co, a remote site in central Tibetan Plateau [J].

Cong, Zhiyuan ;

Kang, Shichang ;

Smirnov, Alexander ;

Holben, Brent .

ATMOSPHERIC RESEARCH, 2009, 92 (01) :42-48

[4]

Draxler RR, 1998, AUST METEOROL MAG, V47, P295

[5] Enhanced pre-monsoon warming over the Himalayan-Gangetic region from 1979 to 2007 [J].

Gautam, R. ;

Hsu, N. C. ;

Lau, K. -M. ;

Tsay, S. -C. ;

Kafatos, M. .

GEOPHYSICAL RESEARCH LETTERS, 2009, 36

[6] Sunphotometry of the 2006-2007 aerosol optical/radiative properties at the Himalayan Nepal Climate Observatory-Pyramid (5079 m a.s.l.) [J].

Gobbi, G. P. ;

Angelini, F. ;

Bonasoni, P. ;

Verza, G. P. ;

Marinoni, A. ;

Barnaba, F. .

ATMOSPHERIC CHEMISTRY AND PHYSICS, 2010, 10 (22) :11209-11221

[7] An emerging ground-based aerosol climatology:: Aerosol optical depth from AERONET [J].

Holben, BN ;

Tanré, D ;

Smirnov, A ;

Eck, TF ;

Slutsker, I ;

Abuhassan, N ;

Newcomb, WW ;

Schafer, JS ;

Chatenet, B ;

Lavenu, F ;

Kaufman, YJ ;

Castle, JV ;

Setzer, A ;

Markham, B ;

Clark, D ;

Frouin, R ;

Halthore, R ;

Karnieli, A ;

O'Neill, NT ;

Pietras, C ;

Pinker, RT ;

Voss, K ;

Zibordi, G .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2001, 106 (D11) :12067-12097

[8]

Justice CO., 2002, REMOTE SENS ENVIRON, V83, P244262

[9] Will aerosol measurements from Terra and Aqua polar orbiting satellites represent the daily aerosol abundance and properties? [J].

Kaufman, YJ ;

Holben, BN ;

Tanré, D ;

Slutsker, I ;

Smirnov, A ;

Eck, TF .

GEOPHYSICAL RESEARCH LETTERS, 2000, 27 (23) :3861-3864

[10] An Algorithm to Screen Cloud-Affected Data for Sky Radiometer Data Analysis [J].

Khatri, Pradeep ;

Takamura, Tamio .

JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN, 2009, 87 (01) :189-204

← 1 2 3 4 →