Nth and Sth Hemispheres on a Bi-POLAR SEE SAW

Bi polar sea saw Nth and sth hemispheres

bi polar sea saw nth and sth hemisphere

Bipolar Seesaw

The Bipolar Seesaw concept describes the antiphasing of Greenland and Antarctic temperature changes along with Dansgaard Oeschger climatic oscillations and Heinrich Events during the last glacial period. Sudden changes in the Thermohaline Circulation affect the polar climate in both hemispheres through changes in the south – northward heat transport. Once freshwater influx in the North Atlantic turns down the Thermohaline Circulation, the northern hemisphere cools down while the southern hemisphere and tropics heat up. Once the deep-water formation turns on again, the meridional heat transfer resumes, and the northern hemisphere warms while the southern hemisphere looses heat


Knutti, R., Flückiger, J., Stocker, T.F. and Timmermann, A., 2004. Strong hemispheric coupling of glacial climate through freshwater discharge and ocean circulation. Nature, 430, 851-856.



6 comments on “Nth and Sth Hemispheres on a Bi-POLAR SEE SAW

  1. Tallbloke blog is running a post on this topic currently April 2014

    Here are a few links on this topic l have copied from posters

    thanks ‘jaime’

    ‘gail coombs’
    Do not forget the other paper on the Bi-polar seesaw. Can we predict the duration of an interglacial?
    P. C. Tzedakis, E.W. Wolff, L. C. Skinner, V. Brovkin, D. A. Hodell, J. F. McManus, and D. Raynaud

    And WUWT discussion:

  2. Broecker [2001] argues that the thermohaline circulation flip-flops may be responsible for the 1500 year cycles in ice-rafted debris in the northern North Atlantic, which has been found by Bond et al. [1997].
    The concept of meridional deep-ocean circulation controlled by high-latitudinal deepwater sources in two hemispheres is the foundation of the Stommel-Arons theory [Stommel et al., 1958; Stommel and Arons, 1960].
    Broecker [2000] argues that 200 years may be needed to reduce the density of the sea surface waters in one hemisphere to the point when the hemispheres change the role and the conveyor flip-flops.

  3. Research from KOREA

    Identifying opposite patterns of climate change between the middle latitude areas of the Northern and Southern Hemispheres

    Korean research team revealed conflicting climate change patterns between the middle latitude areas of the Northern and Southern Hemispheres in relation to glacial and interglacial cycles which have been puzzled for the past 60 years.

    □ Doctor Kyoung-nam Jo from the Quaternary Geology Department of the Korea Institute of Geoscience and Mineral Resources(KIGAM) revealed a clue for solving the riddle of past global climate change in his paper titled ‘Mid-latitudinal interhemispheric hydrologic seesaw over the past 550,000 years’ which was featured in the journal|s_name|s_subject|&strSearchWord=&intSeq=16793

  4. Some evidence here from a graph produced by BOB TISDALE

    It shows the Northern hemisphere and southern hemisphere oceans warming at substantially different rates. (Graph boundary since 2004 !)

    “Figure 1 presents the NODC vertically averaged temperatures anomalies, for the depths of 0-2000 meters, for the 1st quarter of 2005 through the 2nd quarter of 2014.

    Since the 1st quarter of 2005, the oceans of the Southern Hemisphere for the depths of 0-2000 meters have warmed at a rate of about +0.05 deg C/decade, based on the linear trend. On the other hand, the linear trend for the Northern Hemisphere oceans is considerably less, warming at a rate that’s about 10% of the Southern Hemisphere rate.


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