8 December 2006 Aerosol black carbon over Bay of Bengal, observed from an island location, Port Blair: temporal features and long-range transport
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Abstract
Continuous and near-real-time measurements of BC were made for a period of two years from the I-LARC (ISRO Laboratory for Aerosol Radiation and Chemistry) station in Port Blair as a part of the ISRO Geosphere Biosphere Programme (I-GBP). These are used to characterize BC, for the first time over the Bay of Bengal (BoB), which is surrounded by distinct landmasses having highly varying anthropogenic activities. Significantly high concentrations (~2.4 μg m-3) occur during the period September to April. During this period, BC contributes ~ 6.5 % to the composite aerosol mass concentration. The concentration and its share to the composite aerosols decrease rapidly (by a factor of >3) and remain so during the period June to August when the station is under the influence of monsoon winds coming from the Indian Ocean. Back-trajectory analyses reveal five potential advection pathways, which are seasonal in nature and have a strong influence on the BC concentrations over the island. The results and their implications will be discussed.
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K. Krishna Moorthy, K. Krishna Moorthy, S. Suresh Babu, S. Suresh Babu, } "Aerosol black carbon over Bay of Bengal, observed from an island location, Port Blair: temporal features and long-range transport", Proc. SPIE 6408, Remote Sensing of the Atmosphere and Clouds, 64080S (8 December 2006); doi: 10.1117/12.696109; https://doi.org/10.1117/12.696109
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