Mechanism of Interannual Cross‐Equatorial Overturning Anomalies in the Pacific Ocean
| Autor: | Devanarayana R. M. Rao, Neil F. Tandon |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
0207 environmental engineering 02 engineering and technology Sea-surface height Oceanography 01 natural sciences Pacific ocean Physics::Geophysics Sea surface temperature Geophysics 13. Climate action Space and Planetary Science Geochemistry and Petrology Climatology Physics::Space Physics Earth and Planetary Sciences (miscellaneous) Astrophysics::Solar and Stellar Astrophysics Thermohaline circulation 14. Life underwater 020701 environmental engineering Physics::Atmospheric and Oceanic Physics 0105 earth and related environmental sciences |
| Zdroj: | Journal of Geophysical Research: Oceans. 126 |
| ISSN: | 2169-9291 2169-9275 |
| DOI: | 10.1029/2021jc017509 |
| Popis: | Recent evidence shows that the variability of meridional overturning circulation (MOC) in the Indian and Pacific Oceans (PMOC) is characterized by a prominent deep cross-equatorial cell (CEC) spanning the tropics between 20S and 20N, but the mechanism responsible for this CEC is not understood. Using version 4.2 of the Estimating the Circulation and Climate of the Ocean (ECCO) state estimate, our investigation shows the mechanism responsible for CEC can be conceptualized by following mechanistic chain: 1) Anomalous winds produce equatorially antisymmetric anomalies of zonal mean sea surface temperature (SST) in the Pacific Ocean, 2) These temperature anomalies generate equatorially antisymmetric anomalies of sea surface height (SSH), 3) The SSH anomalies generate a cross-equatorial flow in the upper Pacific Ocean, and 4) This anomalous cross-equatorial flow in the upper layers drives compensating circulation in the deep Pacific. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text