The Impact of Barrier Layers on Arabian Sea Surface Temperature Variability
Abstract Barrier layers (BLs) in the Arabian Sea may lead to increased mixed layer (ML) warming or cooling relative to non‐BL conditions, depending on differences in ML properties and atmospheric forcing. We use 13 years of profiling float data from the Arabian Sea to identify when and where each im...
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| Format: | Article |
| Language: | English |
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Wiley
2020-02-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2019GL085290 |
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| _version_ | 1850135329060683776 |
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| author | Rosalind Echols Stephen C. Riser |
| author_facet | Rosalind Echols Stephen C. Riser |
| author_sort | Rosalind Echols |
| collection | DOAJ |
| description | Abstract Barrier layers (BLs) in the Arabian Sea may lead to increased mixed layer (ML) warming or cooling relative to non‐BL conditions, depending on differences in ML properties and atmospheric forcing. We use 13 years of profiling float data from the Arabian Sea to identify when and where each impact is likely based on analysis of the ML temperature tendency. We use a novel method based on the vertical spice profile to identify BLs and their characteristics. BLs are most likely to increase warming during the northeast monsoon, owing to temperature inversions, preceding the development of the miniwarm pool and onset of the southwest monsoon. This effect is nonuniform and is counteracted in some regions by increased penetration of solar radiation below the shallower ML associated with BL. Relative rates of cooling increase in the presence of BL during the southwest monsoon; intermonsoon periods show little net effect from BL. |
| format | Article |
| id | doaj-art-87dad16da3b54632a1cc88d9b0cda00c |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2020-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-87dad16da3b54632a1cc88d9b0cda00c2025-08-20T02:31:27ZengWileyGeophysical Research Letters0094-82761944-80072020-02-01473n/an/a10.1029/2019GL085290The Impact of Barrier Layers on Arabian Sea Surface Temperature VariabilityRosalind Echols0Stephen C. Riser1School of Oceanography University of Washington Seattle WA USASchool of Oceanography University of Washington Seattle WA USAAbstract Barrier layers (BLs) in the Arabian Sea may lead to increased mixed layer (ML) warming or cooling relative to non‐BL conditions, depending on differences in ML properties and atmospheric forcing. We use 13 years of profiling float data from the Arabian Sea to identify when and where each impact is likely based on analysis of the ML temperature tendency. We use a novel method based on the vertical spice profile to identify BLs and their characteristics. BLs are most likely to increase warming during the northeast monsoon, owing to temperature inversions, preceding the development of the miniwarm pool and onset of the southwest monsoon. This effect is nonuniform and is counteracted in some regions by increased penetration of solar radiation below the shallower ML associated with BL. Relative rates of cooling increase in the presence of BL during the southwest monsoon; intermonsoon periods show little net effect from BL.https://doi.org/10.1029/2019GL085290mixed layerbarrier layerArabian Seaair–sea interaction |
| spellingShingle | Rosalind Echols Stephen C. Riser The Impact of Barrier Layers on Arabian Sea Surface Temperature Variability Geophysical Research Letters mixed layer barrier layer Arabian Sea air–sea interaction |
| title | The Impact of Barrier Layers on Arabian Sea Surface Temperature Variability |
| title_full | The Impact of Barrier Layers on Arabian Sea Surface Temperature Variability |
| title_fullStr | The Impact of Barrier Layers on Arabian Sea Surface Temperature Variability |
| title_full_unstemmed | The Impact of Barrier Layers on Arabian Sea Surface Temperature Variability |
| title_short | The Impact of Barrier Layers on Arabian Sea Surface Temperature Variability |
| title_sort | impact of barrier layers on arabian sea surface temperature variability |
| topic | mixed layer barrier layer Arabian Sea air–sea interaction |
| url | https://doi.org/10.1029/2019GL085290 |
| work_keys_str_mv | AT rosalindechols theimpactofbarrierlayersonarabianseasurfacetemperaturevariability AT stephencriser theimpactofbarrierlayersonarabianseasurfacetemperaturevariability AT rosalindechols impactofbarrierlayersonarabianseasurfacetemperaturevariability AT stephencriser impactofbarrierlayersonarabianseasurfacetemperaturevariability |