Arid
DOI10.1016/j.atmosres.2016.09.003
Seasonal variation of near surface black carbon and satellite derived vertical distribution of aerosols over a semi-arid station in India
Kalluri, Raja Obul Reddy1; Gugamsetty, Balakrishnaiah1; Kotalo, Rama Gopal1; Nagireddy, Siva Kumar Reddy1; Tandule, Chakradhar Rao1; Thotli, Lokeswara Reddy1; Shaik, Nazeer Hussain1; Maraka, Vasudeva Reddy1; Rajuru, Ramakrishna Reddy1; Nair, Suresh Babu Surendran2
通讯作者Kotalo, Rama Gopal
来源期刊ATMOSPHERIC RESEARCH
ISSN0169-8095
EISSN1873-2895
出版年2017
卷号184页码:77-87
英文摘要

Extensive measurements of aerosol black carbon mass concentration (BC) and vertical profiles of atmospheric aerosols have been carried out using Aethalometer and CALIPSO level - 2 satellite data from December 2012 to November 2014 over a semi-arid station, Anantapur. We found a bimodal distribution in the mass concentrations of BC aerosols on a diurnal scale. A sharp peak was observed during morning rush hours (7:00 to 8:00 LT) almost an hour after the local sunrise. After which, a broad nocturnal peak was found during similar to 21:00 to 22:00 LT. The seasonal mean BC concentrations (Mixed layer height (M-L)) were found to be 3.45 +/- 1.44 mu g/m(3) (676 +/- 117 m), 2.55 +/- 0.85 mu g/m(3) (1215 +/- 190 m), 1.22 +/- 0.31 mu g/m(3) (1134 +/- 194 m) and 1.75 +/- 0.70 mu g/m(3) (612 +/- 135 m), during the winter, summer, monsoon and post-monsoon respectively. The vertical profiles of aerosol extinction coefficient and back scattering ratio profiles were derived from Cloud Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) showed a strong seasonal variation with aerosols mostly confined below 2 km during the post-monsoon and winter seasons whereas in the other two seasons, the aerosol layer expands beyond 6 km. Depolarization ratios (>0.2) are higher during summer and monsoon at higher altitude regions demonstrate the presence of dust particles, which contribute to the large aerosol extinction at higher levels. These results are further supported by the backward trajectory cluster analysis. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Black carbon Mixed layer height Extinction coefficient Depolarization ratio Hysplit analysis
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000390499100008
WOS关键词LIGHT-ABSORPTION MEASUREMENTS ; HIGH-ALTITUDE LOCATION ; LONG-RANGE TRANSPORT ; MICRO PULSE LIDAR ; OPTICAL-PROPERTIES ; CENTRAL HIMALAYAS ; MASS CONCENTRATIONS ; URBAN LOCATION ; DUST AEROSOLS ; MINERAL DUST
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197690
作者单位1.Sri Krishnadevaraya Univ, Dept Phys, Aerosol & Atmospher Res Lab, Anantapur 515003, Andhra Pradesh, India;
2.Vikram Sarabhai Space Ctr, Space Phys Lab, Trivandrum 695022, Kerala, India
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Kalluri, Raja Obul Reddy,Gugamsetty, Balakrishnaiah,Kotalo, Rama Gopal,et al. Seasonal variation of near surface black carbon and satellite derived vertical distribution of aerosols over a semi-arid station in India[J],2017,184:77-87.
APA Kalluri, Raja Obul Reddy.,Gugamsetty, Balakrishnaiah.,Kotalo, Rama Gopal.,Nagireddy, Siva Kumar Reddy.,Tandule, Chakradhar Rao.,...&Nair, Suresh Babu Surendran.(2017).Seasonal variation of near surface black carbon and satellite derived vertical distribution of aerosols over a semi-arid station in India.ATMOSPHERIC RESEARCH,184,77-87.
MLA Kalluri, Raja Obul Reddy,et al."Seasonal variation of near surface black carbon and satellite derived vertical distribution of aerosols over a semi-arid station in India".ATMOSPHERIC RESEARCH 184(2017):77-87.
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