On the representation of the Southern Ocean water masses in an ocean climate model

1998 ◽  
Vol 103 (C11) ◽  
pp. 24891-24906 ◽  
Author(s):  
Seong-Joong Kim ◽  
Achim Stössel
2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Patrick Hyder ◽  
John M. Edwards ◽  
Richard P. Allan ◽  
Helene T. Hewitt ◽  
Thomas J. Bracegirdle ◽  
...  

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Patrick Hyder ◽  
John M. Edwards ◽  
Richard P. Allan ◽  
Helene T. Hewitt ◽  
Thomas J. Bracegirdle ◽  
...  

2012 ◽  
Vol 58 (212) ◽  
pp. 1191-1200 ◽  
Author(s):  
Caixin Wang ◽  
Keguang Wang

AbstractSouthern Ocean hydrography has undergone substantial changes in recent decades, concurrent with an increase in the rate of Antarctic ice-shelf melting (AISM). We investigate the impact of increasing AISM on hydrography through a twin numerical experiment, with and without AISM, using a global coupled sea-ice/ocean climate model. The difference between these simulations gives a qualitative understanding of the impact of increasing AISM on hydrography. It is found that increasing AISM tends to freshen the surface water, warm the intermediate and deep waters, and freshen and warm the bottom water in the Southern Ocean. Such effects are consistent with the recent observed trends, suggesting that increasing AISM is likely a significant contributor to the changes in the Southern Ocean. Our analyses indicate potential positive feedback between hydrography and AISM that would amplify the effect on both Southern Ocean hydrography and Antarctic ice-shelf loss caused by external factors such as changing Southern Hemisphere winds.


1994 ◽  
Vol 1 (1) ◽  
pp. 26-30 ◽  
Author(s):  
E. S. Posmentier

Abstract. There is considerable evidence in support of Milankovic's theory that variations in high-latitude summer insolation caused by Earth orbital variations are the cause of the Pleistocene ice cycles. The enigmatic discrepancy between the spectra of Milankovic forcing and of Pleistocene climate variations is believed to be resolved by the slow, nonlinear response of ice sheets to changes in solar seasonality. An experiment with a preliminary version of a 14-region atmosphere/snow/upper ocean climate model demonstrates that the response of the ocean-atmosphere system alone to Milankovic forcing is capable of driving ice cycles with the observed spectrum. This occurs because of the highly nonlinear response of both the thermal seasons and the annual mean temperature to solar seasons, which is caused in turn by the highly nonlinear feedback between temperature and snow and sea ice.


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