Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
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 |
推荐引用方式 GB/T 7714 | 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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