Penetrative radiative flux in the Bay of Bengal

dc.contributor.author Lotliker, Aneesh
dc.contributor.author Omand, Melissa M.
dc.contributor.author Lucas, Andrew J.
dc.contributor.author Laney, Samuel R.
dc.contributor.author Mahadevan, Amala
dc.contributor.author Ravichandran, M.
dc.date.accessioned 2016-09-08T17:56:20Z
dc.date.available 2016-09-08T17:56:20Z
dc.date.issued 2016-06
dc.description Author Posting. © The Oceanography Society, 2016. This article is posted here by permission of The Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 29, no. 2 (2016): 214–221, doi:10.5670/oceanog.2016.53. en_US
dc.description.abstract The Bay of Bengal (BoB), a semi-enclosed basin in the northern Indian Ocean, is a complex region with large freshwater inputs and strong vertical stratification that result in a shallow, spatially variable mixed layer. With the exception of shortwave insolation, the air-sea heat exchange occurs at the sea surface and is vertically redistributed by mixing and advection. Strongly stratified, shallow mixed layers inhibit vertical mixing, and the penetration of solar radiation through the base of the mixed layer can lead to redistribution of upper-ocean heat. This paper compiles observations of hyperspectral downwelling irradiance (Ed) from 67 profiles collected during six research cruises in the BoB that span a broad range of regions and seasons between 2009 and 2014. We report attenuation length scales computed using double and single exponential models and quantify the penetration of radiative flux below the mixed layer depth (Qpen). We then evaluate estimates of Qpen obtained from published chlorophyll-based models and compare them to our observations. We find that the largest penetrative heat flux (up to 40% of the incident Ed) occurs near 16°N where the mixed layers are shallow and the water is optically clear. en_US
dc.description.sponsorship AAL acknowledges funding of the Ocean Mixing and Monsoon (OMM) and SATellite Coastal and Oceanographic REsearch (SATCORE) programs by the Ministry of Earth Sciences, government of India. MMO was supported by the Office of Naval Researchfunded Coastal and Submesoscale Process Studies for Air-Sea Interactions Regional Initiative (ASIRI) in the Bay of Bengal. en_US
dc.identifier.citation Oceanography 29, no. 2 (2016): 214–221 en_US
dc.identifier.doi 10.5670/oceanog.2016.53
dc.identifier.uri https://hdl.handle.net/1912/8300
dc.language.iso en_US en_US
dc.publisher The Oceanography Society en_US
dc.relation.uri https://doi.org/10.5670/oceanog.2016.53
dc.title Penetrative radiative flux in the Bay of Bengal en_US
dc.type Article en_US
dspace.entity.type Publication
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