The deep-ocean heat uptake in transient climate change
Abstract in HTML and technical report in PDF available on the Massachusetts Institute of Technology Joint Program on the Science and Policy of Global Change Website. (http://mit.edu/globalchange/www/)
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| Language: | eng |
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MIT Joint Program on the Science and Policy of Global Change
2003
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| Online Access: | http://mit.edu/globalchange/www/abstracts.html#a88 http://hdl.handle.net/1721.1/3556 |
| _version_ | 1811080726031892480 |
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| author2 | Huang, Boyin. |
| author_facet | Huang, Boyin. |
| collection | MIT |
| description | Abstract in HTML and technical report in PDF available on the Massachusetts Institute of Technology Joint Program on the Science and Policy of Global Change Website. (http://mit.edu/globalchange/www/) |
| first_indexed | 2024-09-23T11:35:47Z |
| id | mit-1721.1/3556 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T11:35:47Z |
| publishDate | 2003 |
| publisher | MIT Joint Program on the Science and Policy of Global Change |
| record_format | dspace |
| spelling | mit-1721.1/35562019-04-10T09:30:10Z The deep-ocean heat uptake in transient climate change DOHU in transient climate change Huang, Boyin. Stone, Peter H. Sokolov, Andrei P. Kamenkovich, Igor V. QC981.8.C5.M58 no.88 Abstract in HTML and technical report in PDF available on the Massachusetts Institute of Technology Joint Program on the Science and Policy of Global Change Website. (http://mit.edu/globalchange/www/) Includes bibliographical references (p. 20-23). The deep-ocean heat uptake (DOHU) in transient climate changes is studied using an ocean general circulation model (OGCM) and its adjoint. The model configuration consists of idealized Pacific and Atlantic basins. The model is forced with the anomalies of surface heat and freshwater fluxes from a global warming scenario with a coupled model using the same ocean configuration. In the scenario CO₂ concentration increases 1% per year. The heat uptake calculated from the coupled model and from the adjoint are virtually identical, showing that the heat uptake by the OGCM is a linear process. After 70 years the ocean heat uptake is almost evenly distributed within the layers above 200 m, between 200 and 700 m, and below 700 m (about 20 x 10^22 J in each). The effect of anomalous surface fresh water flux on the DOHU is negligible. Analysis of CMIP-2 data for the same global warming scenario shows that qualitatively similar results apply to coupled atmosphere-ocean GCMs. The penetration of surface heat flux to the deep ocean in our OGCM occurs mainly in the North Atlantic and the Southern Ocean, since both the sensitivity of DOHU to the surface heat flux and the magnitude of anomalous surface heat flux are large in these two regions. The DOHU relies on the reduction of convection and Gent-McWilliams mixing in the North Atlantic, and the reduction of Gent-McWilliams mixing in the Southern Ocean. 2003-10-24T14:55:41Z 2003-10-24T14:55:41Z 2002-09 no. 88 http://mit.edu/globalchange/www/abstracts.html#a88 http://hdl.handle.net/1721.1/3556 eng Report no. 88 http://mit.edu/globalchange/www/abstracts.html#a88 33 p. 1054701 bytes application/pdf application/pdf MIT Joint Program on the Science and Policy of Global Change |
| spellingShingle | QC981.8.C5.M58 no.88 The deep-ocean heat uptake in transient climate change |
| title | The deep-ocean heat uptake in transient climate change |
| title_full | The deep-ocean heat uptake in transient climate change |
| title_fullStr | The deep-ocean heat uptake in transient climate change |
| title_full_unstemmed | The deep-ocean heat uptake in transient climate change |
| title_short | The deep-ocean heat uptake in transient climate change |
| title_sort | deep ocean heat uptake in transient climate change |
| topic | QC981.8.C5.M58 no.88 |
| url | http://mit.edu/globalchange/www/abstracts.html#a88 http://hdl.handle.net/1721.1/3556 |