Yet not, the low latitudes was basically never assume all values more comfortable than just expose on the Eocene [ Sexton et al
Sea surface temperature (SST) proxies suggest that during the Eocene, the high latitudes were significantly warmer than present, approaching or even exceeding temperatures seen in the modern tropics [ Bijl et al., 2009 ; Hollis et al., 2009 ; Liu et al., 2009 ; Bijl et al., 2010 ]. , 2006 ; Lear et al., 2008 ; Keating-Bitonti et al., 2011 ], suggesting that there was a much reduced latitudinal temperature gradient [ Huber, 2008 ; Bijl et al., 2009 ]. During glacial conditions, the surface high latitudes show cooling [ Jouzel et al., 2007 ], with this cooling also extending to low latitudes, suggesting that there were additional feedbacks on the climate system, such as CO2 feedbacks, in addition to orbital driven forcing [ Herbert et al., 2010 ; Rohling et al., 2012 ].
For the past 50 Ma there are also major tectonic alter, such as the uplift of your own Himalayas pursuing the accident away from India having Asia, the opening of one’s Drake and you will Tasman verses, additionally the closure of your own Panama seaway, with all the had an influence on the weather system [ Zachos ainsi que al., 2001 ].
Surface temperature is pertaining to sea-level with their control to your the level of freeze kept for the land and you may thanks to thermal extension. Sea-level reaction to temperatures pressuring for the past 0.5 Ma might have been examined using proxy studies away from ice cores, ocean sediments, and you may traditional corals [ Rohling ainsi que al., 2009 ; Siddall mais aussi al., 2010a , 2010b ].