Secular variability and 200-year diploar [sic] oscillations in an atmospheric circulation over East Antarctica / B. Delmonte, J.R. Petit, V. Maggi.

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035 ## ‡aSPRI-175611
040 ## ‡aUkCU-P‡beng‡eaacr
100 1# ‡aDelmonte, B.
245 10 ‡aSecular variability and 200-year diploar [sic] oscillations in an atmospheric circulation over East Antarctica /‡cB. Delmonte, J.R. Petit, V. Maggi.
246 3# ‡aSecular variability and 200-year dipolar oscillations in an atmospheric circulation over East Antarctica
260 ## ‡a[S.l.] :‡b[s.n.],‡c2006.
300 ## ‡ap. 5-7 :‡bill., diags.
500 ## ‡aCLIVAR Exchanges : newsletter of the Climate Variability and Predictability Programme. Vol. 11(1) :5-7 (2006).
520 3# ‡aRecent dust investigation of ice cores from Dome C and Vostok station, East Antarctica, allowed depiction of secular and multi-secular modes of dust size and atmospheric circulation variability during most of Holocene. After 800-1,000-year-long dust minimum occurring before Holocene onset, both ice core records display short-term variability superposed on main Holocene decreasing trend, with significant secular-scale periodical modes of variability and interesting common periodicity around 200 years, usually associated with variability of DeVries cycle of solar activity. Out-of-phase changes between the two sites suggest that asymmetric or dipolar mode of variability was operating over East Antarctica during most of Holocene. Discusses possible pseudo-oscillator role of Southern Ocean system, with 200-year band of variability in atmospheric dust size records representing final expression of ocean-atmosphere amplification of solar forcing at secular periodicities, influencing sea surface temperature, sea ice extent, and climatological position of highs and lows.
650 07 ‡a551.58 -- Climatology.‡2udc
650 07 ‡a551.32 -- Glaciology.‡2udc
650 07 ‡a551.321.2 -- Snow and ice, methods of sampling, excavating, drilling, etc.‡2udc
650 07 ‡a622.14 -- Core sampling, ice and snow.‡2udc
650 07 ‡a551.324.84 -- Land ice, impurities.‡2udc
650 07 ‡a551.510.42 -- Atmospheric impurities, dust and aerosols.‡2udc
650 07 ‡a551.583 -- Climatic changes.‡2udc
650 07 ‡a551.794 -- Holocene.‡2udc
650 07 ‡a551.465.7 -- Oceanography, energy budget.‡2udc
650 07 ‡a523.9 -- Sun and solar physics.‡2udc
650 07 ‡aD -- Atmospheric sciences.‡2local
651 #7 ‡a(*7) -- Antarctic regions.‡2udc
651 #7 ‡a(*7.3) -- East Antarctica.‡2udc
651 #7 ‡a(*80) -- Southern Ocean.‡2udc
700 1# ‡aPetit, J. R.
700 1# ‡aMaggi, V.
773 0# ‡7nnas ‡tCLIVAR Exchanges : newsletter of the Climate Variability and Predictability Programme. ‡gVol. 11(1) (2006) ‡wSPRI-170381
916 ## ‡a2006/06/20 -- HS
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20240416 ‡bHS