Search for the Little Ice Age in Southern Ocean Sea-Ice Records
نویسندگان
چکیده
منابع مشابه
Little Ice Age
Volume 1, The Earth system: physical and chemical dimensions of global environmental change, pp 504–509
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The end of winter stratification within the cold cyclonic trough of the Weddell gyre near 60øS between 5øE and the Greenwich meridian is resolved with the Mikhail Somov data set. The temperature maximum of the Weddell Deep Water (WDW) is, for the most part, less than 0.5øC, but warmer cells of WDW are found. These warm WDW cells have temperature, salinity, and oxygen properties similar to the W...
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The Southern Ocean regulates the ocean's biological sequestration of CO2 and is widely suspected to underpin much of the ice age decline in atmospheric CO2 concentration, but the specific changes in the region are debated. Although more complete drawdown of surface nutrients by phytoplankton during the ice ages is supported by some sediment core-based measurements, the use of different proxies ...
متن کاملAntarctic Ice Sheet fertilises the Southern Ocean
Southern Ocean (SO) marine primary productivity (PP) is strongly influenced by the availability of iron in surface waters, which is thought to exert a significant control upon atmospheric CO2 concentrations on glacial/interglacial timescales. The zone bordering the Antarctic Ice Sheet exhibits high PP and seasonal plankton blooms in response to light and variations in iron availability. The sou...
متن کاملThe Impact of Southern Ocean Sea Ice in a Global Ocean Model
Most of the Southern Ocean (SO) is marginally stably stratified and thus prone to enhanced convection and possibly bottom-water formation whenever the upper ocean is cooled or made more saline by ice formation. Sea ice modifies the heat and freshwater fluxes, which in turn constitute a critical surface condition in this sensitive region of intense vertical exchange. The authors investigate the ...
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 1990
ISSN: 0260-3055,1727-5644
DOI: 10.1017/s0260305500008624