Vijith, V and Vinayachandran, PN and Webber, BGM and Matthews, AJ and George, JV and Kannaujia, VK and Lotliker, AA and Amol, P (2020) Closing the sea surface mixed layer temperature budget from in situ observations alone: Operation Advection during BoBBLE. In: Scientific Reports, 10 (1).
|
PDF
sci_rep_10-01_2020.pdf - Published Version Download (1MB) | Preview |
|
|
PDF
41598_2020_63320_MOESM1_ESM.pdf - Published Supplemental Material Download (145kB) | Preview |
Abstract
Sea surface temperature (SST) is a fundamental driver of tropical weather systems such as monsoon rainfall and tropical cyclones. However, understanding of the factors that control SST variability is lacking, especially during the monsoons when in situ observations are sparse. Here we use a ground-breaking observational approach to determine the controls on the SST variability in the southern Bay of Bengal. We achieve this through the first full closure of the ocean mixed layer energy budget derived entirely from in situ observations during the Bay of Bengal Boundary Layer Experiment (BoBBLE). Locally measured horizontal advection and entrainment contribute more significantly than expected to SST evolution and thus oceanic variability during the observation period. These processes are poorly resolved by state-of-the-art climate models, which may contribute to poor representation of monsoon rainfall variability. The novel techniques presented here provide a blueprint for future observational experiments to quantify the mixed layer heat budget on longer time scales and to evaluate these processes in models. © 2020, The Author(s).
| Item Type: | Journal Article |
|---|---|
| Publication: | Scientific Reports |
| Publisher: | NATURE PUBLISHING GROUP |
| Additional Information: | The copyright of this article belongs to NATURE PUBLISHING GROUP |
| Department/Centre: | Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences |
| Date Deposited: | 11 Aug 2020 07:06 |
| Last Modified: | 11 Aug 2020 07:06 |
| URI: | http://eprints.iisc.ac.in/id/eprint/65339 |
Actions (login required)
 |
View Item |
