Antarctic sea ice extent during the Holocene reconstructed from inland ice core evidence

2008 ◽  
Vol 113 (D15) ◽  
Author(s):  
Yoshinori Iizuka ◽  
Takeo Hondoh ◽  
Yoshiyuki Fujii
Keyword(s):  
Sea Ice ◽  
Ice Core ◽  
Sea Ice Extent ◽  
The Holocene ◽  
Antarctic Sea Ice ◽  
Inland Ice

scholarly journals An emerging technique: multi-ice-core multi-parameter correlations with Antarctic sea-ice extent

2011 ◽  
Vol 52 (57) ◽  
pp. 347-354 ◽  
Author(s):  
Sharon B. Sneed ◽  
Paul A. Mayewski ◽  
Daniel A. Dixon
Keyword(s):  
Sea Ice ◽  
Ice Core ◽  
Chemical Species ◽  
Ice Cores ◽  
Initial Step ◽  
Single Species ◽  
Parameter Study ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice ◽  
Siple Dome

AbstractUsing results stemming from the International Trans-Antarctic Scientific Expedition (ITASE) ice-core array plus data from ice cores from the South Pole and Siple Dome we investigate the use of sodium (Na+), non-sea-salt sulfate (nssSO42–) and methylsulfonate (MS–) as proxies for Antarctic sea-ice extent (SIE). Maximum and mean annual chemistry concentrations for these three species correlate significantly with maximum, mean and minimum annual SIE, offering more information and clarification than single ice-core and single species approaches. Significant correlations greater than 90% exist between Na+ and maximum SIE; nssSO42– with minimum and mean SIE; and MS– with mean SIE. Correlations with SIE within large geographic regions are in the same direction for all ice-core sites for Na+ and nssSO42– but not MS–. All ice cores display an SIE correlation with nssSO42– and MS–, but not all correlate with Na+. This multi-core multi-parameter study provides the initial step in determining which chemical species can be used reliably and in which regions as a building block for embedding other ice-core records. Once established, the resulting temporal and spatial matrix can be used to relate ice extents, atmospheric patterns, biological productivity and site conditions.

scholarly journals An ice-core record of Antarctic sea-ice extent in the southern Indian Ocean for the past 300 years

2015 ◽  
Vol 56 (69) ◽  
pp. 451-455 ◽  
Author(s):  
C. Xiao ◽  
T. Dou ◽  
S.B. Sneed ◽  
R. Li ◽  
I. Allison
Keyword(s):  
Indian Ocean ◽  
Sea Ice ◽  
Ice Core ◽  
Ice Age ◽  
Southern Indian Ocean ◽  
The Arctic ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice ◽  
Ice Core Record ◽  
Decadal Variations

AbstractThe differing response of ice extent in the Arctic and Antarctic to global average temperature change, over approximately the last three decades, highlights the importance of reconstructing long-term sea-ice history. Here, using high-resolution ice-core records of methane-sulfonate (MS–) from the East Antarctic ice sheet in Princess Elizabeth Land, we reconstruct southern Indian Ocean sea-ice extent (SIE) for the sector 62–92° E for the period AD 1708–2000. Annual MS– concentration positively correlates in this sector with satellite-derived SIE for the period 1979–2000 (r2 = 0.25, P < 0.02). The 293 year MS– record of proxy SIE shows multi-decadal variations, with large decreases occurring in two warm intervals during the Little Ice Age, and during the 1940s. It is very likely that the global temperature is the controlling factor of Antarctic sea-ice variation at the centennial scale, although there has been a change in phase between them in recent decades.

scholarly journals A record of Antarctic sea ice extent in the Southern Indian Ocean for the past 300 yr and its relationship with global mean temperature

2013 ◽  
Vol 7 (4) ◽  
pp. 3611-3625 ◽  
Author(s):  
C. Xiao ◽  
R. Li ◽  
S. B. Sneed ◽  
T. Dou ◽  
I. Allison
Keyword(s):  
Indian Ocean ◽  
Sea Ice ◽  
Temperature Change ◽  
Ice Core ◽  
Southern Annular Mode ◽  
Ice Age ◽  
Southern Indian Ocean ◽  
The Arctic ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice

Abstract. The differing response of ice extent in the Arctic and Antarctic to global average temperature change, over approximately the last three decades, highlights the importance of reconstructing long-term sea ice history. Here, using high-resolution ice core records of methanesulfonate (MS−) from the East Antarctic Ice Sheet in Princess Elizabeth Land, we reconstruct southern Indian Ocean sea ice extent (SIE) for the sector 70° E–100° E for the period 1708–2000 A.D. Annual MS− concentration positively correlates in this sector with satellite-derived SIE for the period 1973–2000 (P < 0.05). The 293 yr MS− record of proxy SIE shows multi-decadal variations, with large decreases occurring in two warm intervals during the Little Ice Age, and during the 1940s. However, after the 1980s there is a change in phase between Antarctic SIE and global temperature change, with both increasing. This paradox is probably attributable to the strong anomaly in the Southern Annular Mode (SAM) in the recent three decades.

scholarly journals Interaction between Antarctic sea ice and synoptic activity in the circumpolar trough: implications for ice-core interpretation

2011 ◽  
Vol 52 (57) ◽  
pp. 9-17 ◽  
Author(s):  
Elisabeth Schlosser ◽  
Jordan G. Powers ◽  
Michael G. Duda ◽  
Kevin W. Manning
Keyword(s):  
Sea Ice ◽  
Meteorological Data ◽  
Ice Core ◽  
Ice Cores ◽  
Southern Annular Mode ◽  
Atmospheric Conditions ◽  
Sea Ice Concentration ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice ◽  
Precipitation Seasonality

AbstractInteractions between Antarctic sea ice and synoptic activity in the circumpolar trough have been investigated using meteorological data from European Centre for Medium-Range Weather Forecasts (ECMWF) Interim Re-analysis and sea-ice data from passive-microwave measurements. Total Antarctic sea-ice extent does not show large interannual variations. However, large differences are observed on a regional/monthly scale, depending on prevailing winds and currents, and thus on the prevailing synoptic situations. the sea-ice edge is also a preferred region for cyclogenesis due to the strong meridional temperature gradient (high baroclinicity) in that area. the motivation for this study was to gain a better understanding of the interaction between sea-ice extent and the general atmospheric flow, particularly the frequency of warm-air intrusions into the interior of the Antarctic continent, since this influences precipitation seasonality and must be taken into account for a correct climatic interpretation of ice cores. Two case studies of extraordinary sea-ice concentration anomalies in relation to the prevailing atmospheric conditions are presented. However, both strong positive and negative anomalies can be related to warm biases in ice cores (indicated by stable-isotope ratios), especially in connection with the negative phase of the Southern Annular Mode.

scholarly journals Covariation of Sea ice and methanesulphonic acid in Wilhelm II Land, East Antarctica

2006 ◽  
Vol 44 ◽  
pp. 429-432 ◽  
Author(s):  
Annette F.M. Foster ◽  
Mark A.J. Curran ◽  
Barbara T. Smith ◽  
Tas D. Van Ommen ◽  
Vin I. Morgan
Keyword(s):  
Sea Ice ◽  
Marine Ecosystem ◽  
Ice Core ◽  
Coastal Region ◽  
East Antarctica ◽  
Supporting Evidence ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice ◽  
Sea Ice Decline ◽  
Local Law

AbstractSea ice plays an important role in ocean–atmosphere heat exchange, global albedo and the marine ecosystem. Knowledge of variation in Sea-ice extent is essential in order to understand past climates, and to model possible future climate Scenarios. This paper presents results from a Short firn core Spanning 15 years collected from near Mount Brown, Wilhelm II Land, East Antarctica. Variations of methanesulphonic acid (MSA) at Mount Brown were positively correlated with Sea-ice extent from the coastal region Surrounding Mount Brown (60–120˚ E) and from around the entire Antarctic coast (0–360˚ E). Previous results from Law Dome identified this MSA–sea-ice relationship and proposed it as an Antarctic Sea-ice proxy (Curran and others, 2003), with the Strongest results found for the local Law Dome region. Our data provide Supporting evidence for the Law Dome proxy (at another Site in East Antarctica), but a deeper Mount Brown ice core is required to confirm the Sea-ice decline Suggested by Curran and others (2003). Results also indicate that this deeper record may also provide a more circum-Antarctic Sea-ice proxy.

Multi-decadal trends in Antarctic sea-ice extent driven by ENSO–SAM over the last 2,000 years

2021 ◽  
Vol 14 (3) ◽  
pp. 156-160
Author(s):  
Xavier Crosta ◽  
Johan Etourneau ◽  
Lisa C. Orme ◽  
Quentin Dalaiden ◽  
Philippine Campagne ◽  
...  
Keyword(s):  
Sea Ice ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice

Large-Scale Variations in Observed Antarctic Sea Ice Extent and Associated Atmospheric Circulation

1981 ◽  
Vol 109 (11) ◽  
pp. 2323-2336 ◽  
Author(s):  
D. J. Cavalieri ◽  
C. L. Parkinson
Keyword(s):  
Sea Ice ◽  
Atmospheric Circulation ◽  
Large Scale ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice

scholarly journals The Amundsen Sea Low: Variability, Change, and Impact on Antarctic Climate

2016 ◽  
Vol 97 (1) ◽  
pp. 111-121 ◽  
Author(s):  
M. N. Raphael ◽  
G. J. Marshall ◽  
J. Turner ◽  
R. L. Fogt ◽  
D. Schneider ◽  
...  
Keyword(s):  
Sea Ice ◽  
Climate Model ◽  
Ross Sea ◽  
Ice Core ◽  
Meridional Wind ◽  
West Antarctica ◽  
Sea Ice Extent ◽  
Amundsen Sea ◽  
West Antarctic ◽  
Climate Model Simulations

Abstract The Amundsen Sea low (ASL) is a climatological low pressure center that exerts considerable influence on the climate of West Antarctica. Its potential to explain important recent changes in Antarctic climate, for example, in temperature and sea ice extent, means that it has become the focus of an increasing number of studies. Here, the authors summarize the current understanding of the ASL, using reanalysis datasets to analyze recent variability and trends, as well as ice-core chemistry and climate model projections, to examine past and future changes in the ASL, respectively. The ASL has deepened in recent decades, affecting the climate through its influence on the regional meridional wind field, which controls the advection of moisture and heat into the continent. Deepening of the ASL in spring is consistent with observed West Antarctic warming and greater sea ice extent in the Ross Sea. Climate model simulations for recent decades indicate that this deepening is mediated by tropical variability while climate model projections through the twenty-first century suggest that the ASL will deepen in some seasons in response to greenhouse gas concentration increases.

Large-scale numerical model of antarctic sea ice extent variations

2016 ◽  
Vol 41 (4) ◽  
pp. 276-284
Author(s):  
A. N. Chetyrbotskii
Keyword(s):  
Numerical Model ◽  
Sea Ice ◽  
Large Scale ◽  
Sea Ice Extent ◽  
Antarctic Sea Ice
Sign in / Sign up

Export Citation Format

Share Document