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| Robson, Jon; Sutton, Rowan T.; Archibald, Alex; Cooper, Fenwick; Christensen, Matthew; Gray, Lesley J.; Holliday, N. Penny; Macintosh, Claire; Mcmillan, Malcolm; Moat, Ben; Russo, Maria; Tilling, Rachel; Carslaw, Ken; Desbruyeres, Damien; Embury, Owen; Feltham, Daniel L.; Grosvenor, Daniel P.; Josey, Simon; King, Brian; Lewis, Alastair; Mccarthy, Gerard D.; Merchant, Chris; New, Adrian L.; O'Reilly, Christopher H.; Osprey, Scott M.; Read, Katie; Scaife, Adam; Shepherd, Andrew; Sinha, Bablu; Smeed, David; Smith, Doug; Ridout, Andrew; Woollings, Tim; Yang, Mingxi. |
| Major changes are occurring across the North Atlantic climate system, including in the atmosphere, ocean and cryosphere, and many observed changes are unprecedented in instrumental records. As the changes in the North Atlantic directly affect the climate and air quality of the surrounding continents, it is important to fully understand how and why the changes are taking place, not least to predict how the region will change in the future. To this end, this article characterizes the recent observed changes in the North Atlantic region, especially in the period 2005–2016, across many different aspects of the system including: atmospheric circulation; atmospheric composition; clouds and aerosols; ocean circulation and properties; and the cryosphere. Recent... |
| Tipo: Text |
Palavras-chave: Atmosphere; Atmospheric composition; Cryosphere; Observations; Ocean; North atlantic. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56606/58298.pdf |
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| Huthnance, John M.; Coelho, Henrique; Griffiths, Colin R.; Knight, Philip J.; Rees, Andrew P.; Sinha, Bablu; Vangriesheim, Annick; White, Martin; Chatwin, Paul G.. |
| The physical context for ocean margin exchange at Goban Spur is described. Observations adjacent to, prior to and during the Ocean Margin EXchange (OMEX) project of 1993-1996 are used. They include currents measured on moorings, drogued-buoy tracks; temperature and other data from CTD profiles, especially as indicators of vertical mixing; evidence from models, particularly for turbulence causing vertical mixing. These data are combined in estimates of (seasonally dependent) mean flow, tidal currents, other current variability, exchange and mixing over the main cross-slope section studied in OMEX and in nearby and contrasted locations (aided by the use of earlier and adjacent measurements). Causative physical processes are discussed: potentially northward... |
| Tipo: Text |
Palavras-chave: Estimation; Physical process; Tidal current; Mixing; Ocean margin exchange; Physical oceanography. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-740.pdf |
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| Sinha, Bablu; Sévellec, Florian; Robson, Jon; Nurser, George. |
| Global surface warming since 1850 consisted of a series of slowdowns (hiatus) followed by surges. Knowledge of a mechanism to explain how this occurs would aid development and testing of interannual to decadal climate forecasts. In this paper a global climate model is forced to adopt an ocean state corresponding to a hiatus (with negative Interdecadal Pacific Oscillation, IPO, and other surface features typical of a hiatus) by artificially increasing the background diffusivity for a decade before restoring it to its normal value and allowing the model to evolve freely. This causes the model to develop a decadal surge which overshoots equilibrium (resulting in a positive IPO state) leaving behind a modified, warmer climate for decades. Water mass... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00624/73629/73066.pdf |
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