Sen, A. and Ahammed, Y. N. and Arya, B. C. and Banerjee, T. and Begam, G. Reshma and Baruah, B. P. and Chatterjee, A. and Choudhuri, A. K. and Dhir, A. and Das, T. and Dhyani, P. P. and Deb, N. C. and Gadi, R. and Gauns, M. and Ghosh, S. K. and Gupta, A. and Sharma, K. C. and Khan, A. H. and Kumari, K. M. and Kumar, M. and Kumar, A. and Kuniya, J. C. and Lakhani, A. and Meena, R. K. and Mahapatra, P. S. and Naqvi, S. W. A. and Singh, D. P. and Pal, S. and Panda, S. and Rohtash, - and Saikia, J. and Saikia, P. and Sharma, A. and Sharma, P. and Saxena, M. and Shenoy, D. M. and Vachaspati, C. Viswanatha and Sharma, S. K. and Mandal, T. K. (2014) Atmospheric Fine and Coarse Mode Aerosols at Different Environments of India and the Bay of Bengal During Winter-2014: Implications of a Coordinated Campaign. Mapan, 29 (4). pp. 273-284. ISSN 0970-3950

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In this paper, we present mass concentrations of particulate matter [PM2.5, PM10 size fractions and total suspended particulates (TSP)] measured simultaneously over land stations (Kullu, Patiala, Delhi, Ajmer, Agra, Lucknow, Varanasi, Giridih, Kolkata, Darjeeling, Jorhat, Itanagar, Imphal, Bhubaneswar, and Kadapa), mostly distributed across the Indo-Gangetic plain (IGP) of India as well as in the marine atmosphere over Bay of Bengal (BoB) in the period from 20 January to 3 February, 2014. The main objective of this study was to quantify the continental outflow of particulates (PM2.5, PM10 and TSP) from IGP and associated regions into the BoB along with low level north-east wind flow during winter monsoon period. The present study provides a glimpse of the aerosol loading over the IGP region. During this campaign, the highest average PM2.5 (187.8 +/- 36.5 mu g m(-3), range 125.6-256.2 mu g m(-3)), PM10 (272.6 +/- 102.9 mu g m(-3), range 147.6-520.1 mu g m(-3)) and TSP (325.0 +/- 71.5 mu g m(-3), range 220.4-536.6 mu g m(-3)) mass concentrations were recorded at Varanasi, Kolkata and Lucknow over middle and lower IGP regions. The PM2.5 (average 41.3 +/- 11.9 mu g m(-3); range 15.0-54.4 mu g m(-3)), PM10 (average 53.9 +/- 18.9 mu g m(-3); range 30.1-82.1 mu g m(-3)) and TSP (average 78.8 +/- 29.7 mu g m(-3); range 49.1-184.5 mu g m(-3)) loading over BoB were found to be comparable to land stations and suggests possible continental outflow. Over the continental region, the highest PM2.5/PM10 ratio was recorded at Delhi (0.87). The PM2.5/PM10 ratio over BoB (0.77) was found to be quite high and comparable to Varanasi (0.80) and Agra (0.79).

Item Type: Article
Additional Information: Copyright for this article belongs to M/S Springer Verlag.
Subjects: Instruments/ Instrumentation
Depositing User: Dr. Rajpal Walke
Date Deposited: 11 Sep 2015 11:26
Last Modified: 11 Sep 2015 11:26

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