A circumpolar gravest empirical mode for the Southern Ocean hydrography
نویسندگان
چکیده
منابع مشابه
Circumpolar response of Southern Ocean eddy activity to a change in the Southern Annular Mode
[1] Analysis of satellite altimeter data reveals anomalously high Eddy Kinetic Energy (EKE) in the Antarctic Circumpolar Current (ACC) during the period 2000–2002. Around 2–3 years earlier (1998), the circumpolar eastward wind stress (as quantified by the Southern Annular Mode; SAM) showed a significant positive peak, and we have shown previously that the ACC peaked around 1998 in response. An ...
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We present new Holocene and glacial dO data measured on planktonic foraminifera Neogloboquadrina pachyderma and benthic foraminifera Cibicidoides species from the Atlantic and Pacific sectors of the Southern Ocean in order to better understand its glacial hydrography. Combined with previously published data, the latitudinal dO distributions of these foraminifera show no appreciable difference d...
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The Antarctic circumpolar wave (ACW) is a nominal 4-yr climate signal in the ocean–atmosphere system in the Southern Ocean, propagating eastward at an average speed of 6–8 cm s21, composed of two waves taking approximately 8 years to circle the globe. The ACW is characterized by a persistent phase relationship between warm (cool) sea surface temperature (SST) anomalies and poleward (equatorward...
متن کاملOn the Relationship of the Circumpolar Current to Southern Hemisphere Winds in Coarse-Resolution Ocean Models
The response of the Circumpolar Current to changing winds has been the subject of much debate. To date most theories of the current have tried to predict the transport using various forms of momentum balance. This paper argues that it is also important to consider thermodynamic as well as dynamic balances. Within largescale general circulation models, increasing eastward winds within the Southe...
متن کاملMean dynamic topography in the Southern Ocean: Evaluating Antarctic Circumpolar Current transport
[1] Mean Dynamic Ocean Topography (MDT) is the difference between the timeaveraged sea surface height and the geoid. Combining sea level and geoid measurements, which are both attained primarily by satellite, is complicated by ocean variability and differences in resolved spatial scales. Accurate knowledge of the MDT is particularly difficult in the Southern Ocean as this region is characterize...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Oceans
سال: 2001
ISSN: 0148-0227
DOI: 10.1029/2000jc900112