Spatial and temporal variability of solar penetration depths in the Bay of Bengal and its impact on sea surface temperature (SST) during the summer monsoon

Giddings, Jack; Heywood, Karen J.; Matthews, Adrian J.; Joshi, Manoj M.; Webber, Benjamin G. M.; Sanchez-Franks, Alejandra; King, Brian A.; Vinayachandran, Puthenveettil N.

doi:https://doi.org/10.5194/os-17-871-2021

Articles | Volume 17, issue 4

https://doi.org/10.5194/os-17-871-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-17-871-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 4

Research article

|

06 Jul 2021

Research article |

| 06 Jul 2021

Spatial and temporal variability of solar penetration depths in the Bay of Bengal and its impact on sea surface temperature (SST) during the summer monsoon

Jack Giddings, Karen J. Heywood, Adrian J. Matthews, Manoj M. Joshi, Benjamin G. M. Webber, Alejandra Sanchez-Franks, Brian A. King, and Puthenveettil N. Vinayachandran

Data sets

ESA Ocean Colour Climate Change Initiative (Ocean_Colour_cci): Version 3.1 Data S. Sathyendranath, M. Grant, R. J. W. Brewin, C. Brockmann, V. Brotas, A. Chuprin, R. Doerffer, M. Dowell, A. Farman, S. Groom, T. Jackson, H. Krasemann, S. Lavender, V. Martinez Vicente, C. Mazeran, F. Mélin, T. S. Moore, D. Müller, T. Platt, P. Regner, S. Roy, F. Steinmetz, J. Swinton, A. Valente, M. Zühlke, D. Antoine, R. Arnone, W. M. Balch, K. Barker, R. Barlow, S. Bélanger, J.-F. Berthon, Ş. Beşiktepe, V. E. Brando, E. Canuti, F. Chavez, H. Claustre, R. Crout, G. Feldman, B. Franz, R. Frouin, C. García-Soto, S. W. Gibb, R. Gould, S. Hooker, M. Kahru, H. Klein, S. Kratzer, H. Loisel, D. McKee, B. G. Mitchell, T. Moisan, F. Muller-Karger, L. O'Dowd, M. Ondrusek, A. J. Poulton, M. Repecaud, T. Smyth, H. M. Sosik, M. Taberner, M. Twardowski, K. Voss, J. Werdell, M. Wernand, and G. Zibordi https://doi.org/10.5285/9c334fbe6d424a708cf3c4cf0c6a53f5

DT all-sat-merged Global Ocean Gridded SSALTO/DUACS Sea Surface Height L4 product and derived variables SSALTO/Duacs https://www.aviso.altimetry.fr/en/home.html

Marine Environment Monitoring Service Copernicus https://marine.copernicus.eu/

Argo float data and metadata from Global Data Assembly Centre (Argo GDAC) Argo https://doi.org/10.17882/42182

British Oceanographic Data Centre, OceanGlider Data Assembly Centre BODC https://www.bodc.ac.uk/data/bodc_database/gliders/

Short summary

Little is known about the impact of chlorophyll on SST in the Bay of Bengal (BoB). Solar irradiance measured by an ocean glider and three Argo floats is used to determine the effect of chlorophyll on BoB SST during the 2016 summer monsoon. The Southwest Monsoon Current has high chlorophyll concentrations (∼0.5 mg m⁻³) and shallow solar penetration depths (∼14 m). Ocean mixed layer model simulations show that SST increases by 0.35°C per month, with the potential to influence monsoon rainfall.