scholarly journals MONITORING OF THE WATER-ICE ECOSYSTEM IN THE ANTARCTIC COASTAL AREA ON MATERIALS OF THE RAE-64

2019 ◽  
Vol 47 (1) ◽  
pp. 223-224
Author(s):  
I.A. Melnikov
Keyword(s):  
Southern Ocean ◽  
Sea Ice ◽  
Coastal Area ◽  
International Polar Year ◽  
Water Ice ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
International Polar ◽  
The Antarctic

During the seasonal work of the Russian Antarctic expedition (RAE-64) in the Nella fjord at the continental station “Progress” (Prydz Bay, Eastern Antarctica), the monitoring of the water-ice ecological system has been carried out here annually since the International polar year (2007). The purpose of monitoring is to show the role of sea ice biota in the global biosphere processes of the Southern ocean.

scholarly journals MONITORING OF THE NELLA FJORD WATER-ICE ECOSYSTEM (PRUDS BAY, EAST ANTARCTIC): SEASON RAE-65

2020 ◽  
Vol 48 (2) ◽  
pp. 163-165
Author(s):  
I. A. Melnikov
Keyword(s):  
Southern Ocean ◽  
Sea Ice ◽  
East Antarctica ◽  
Water Ice ◽  
Project Assessment ◽  
Antarctic Sea Ice ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
The Antarctic

During the seasonal work of the Russian Antarctic expedition (RAE-65), the monitoring of the water-ice ecological system was conducted in the Nella fjord (Prude Bay, East Antarctica). This monitoring is conducted annually since the IPY in 2007 in frames of the project “Assessment of the ecology of the Antarctic sea ice zone” (“Krial”) (Melnikov, 2020). The purpose of the monitoring is the assessment of the role of water-ice biota in global biosphere processes in the Southern Ocean.

scholarly journals Education and outreach by the Antarctic Treaty Parties, Observers and Experts under the framework of the Antarctic Treaty Consultative Meetings

Polar Record ◽  
2018 ◽  
Vol 55 (4) ◽  
pp. 241-244 ◽  
Author(s):  
José C. Xavier ◽  
Dragomir Mateev ◽  
Linda Capper ◽  
Annick Wilmotte ◽  
David W. H. Walton
Keyword(s):  
International Union ◽  
International Polar Year ◽  
Daily Lives ◽  
Educational Value ◽  
International Polar ◽  
Antarctic Research ◽  
Antarctic Treaty ◽  
Education And Outreach ◽  
The Antarctic

AbstractThe development of formal discourse about education and outreach within the Antarctic Treaty Consultative Meetings (ATCM), and the influence of major international activities in this field, are described. This study reflects on the ATCM Parties’ approach to implementing the ambition of the Protocol on Environmental Protection to the Antarctic Treaty Article 6.1.a, to promote the educational value of Antarctica and its environment, and examines the role of workshops and expert groups within the Scientific Committee on Antarctic Research (SCAR), the International Union for the Conservation of Nature (IUCN), and the Council of Managers of National Antarctic Programmes. These early initiatives, which emerged in the 1990s, were a prelude to the development and implementation of a large number of International Polar Year (IPY) education and outreach programmes. The establishment of an Antarctic Treaty System Intersessional Contact Group, and an online forum on education and outreach during the 2015 ATCM in Bulgaria, is a legacy of IPY and is the next step in fostering collaboration to engage people around the world in the importance and relevance of Antarctica to our daily lives.

Antarctic meteorology and climatology: an unfolding story of discovery

2005 ◽  
Vol 32 (2) ◽  
pp. 316-333 ◽  
Author(s):  
Malcolm Walker
Keyword(s):  
Southern Ocean ◽  
Telecommunication Networks ◽  
World War ◽  
International Polar Year ◽  
International Geophysical Year ◽  
International Polar ◽  
Antarctic Continent ◽  
Meteorological Observations ◽  
Strong Winds ◽  
The Antarctic

Early explorers and sealers took home from the Southern Ocean tales of tempests, huge waves and massive icebergs. Many recorded in their logbooks and narratives observations of wind, weather and sea state. Meteorological measurements were made on some early voyages but were often of doubtful quality. Not until the 1840s were reliable meteorological observations made near the Antarctic continent. During the First International Polar Year, observations were made near Cape Horn and on South Georgia. From 1899 onwards, bases were established on the Antarctic continent and meteorological observing programmes organized. Extremely strong winds were discovered. Data sets of climatological value became available and data from aloft were obtained. After the First World War, wireless telegraphy was used increasingly to broadcast observations from ships and shore bases to distant analysis centres. During the Second International Polar Year, thousands of meteorological observations were made aboard ships on the Southern Ocean. After the Second World War, the pace of progress quickened, especially during the International Geophysical Year. Research stations and the International Antarctic Analysis Centre were established. Weather satellites, automatic weather stations, global telecommunication networks and powerful computers revolutionized Antarctic meteorology and climatology.

scholarly journals Dielectric permittivity of snow measured along the route traversed in the Japanese–Swedish Antarctic Expedition 2007/08

2010 ◽  
Vol 51 (55) ◽  
pp. 9-15 ◽  
Author(s):  
Shin Sugiyama ◽  
Hiroyuki Enomoto ◽  
Shuji Fujita ◽  
Kotaro Fukui ◽  
Fumio Nakazawa ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Austral Summer ◽  
Mixture Theory ◽  
Snow Layer ◽  
International Polar Year ◽  
Transmission Line Resonator ◽  
Antarctic Expedition ◽  
International Polar ◽  
Joint Contribution ◽  
The Antarctic

AbstractAs a joint contribution of Japan and Sweden to the International Polar Year 2007–09, a field expedition between Syowa and Wasa stations in East Antarctica was carried out in the 2007/08 austral summer season. Along the 2800 km long expedition route, the dielectric permittivity of the upper 1 m snow layer was measured at intervals of approximately 50 km using a snow fork, a parallel-wire transmission-line resonator. More than 2000 measurements were performed under carefully calibrated conditions, mostly in the interior of Antarctica. The permittivity ε′ was a function of snow density as in previous studies on dry snow, but the values were significantly smaller than those reported before. In the light of the dielectric mixture theory, the relatively smaller ε′ obtained in this study can be attributed to the snow structures characteristic in the studied region. Our data suggest that the permittivity of snow in the Antarctic interior is significantly affected by weak bonding between snow grains, which is due to depth-hoar formation in the extremely low-temperature conditions.

Last Glacial Maximum Antarctic sea ice linked with global mean ocean temperature: evidence from PMIP3, PMIP4 and MIROC-4m simulations

2021 ◽  
Author(s):  
Tristan Vadsaria ◽  
Sam Sherriff-Tadano ◽  
Ayako Abe-Ouchi ◽  
Takashi Obase ◽  
Wing-Le Chan ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Sea Ice ◽  
Last Glacial Maximum ◽  
Ocean Circulation ◽  
Glacial Maximum ◽  
Ocean Temperature ◽  
Sea Ice Extent ◽  
Last Glacial ◽  
Antarctic Sea Ice ◽  
The Antarctic

<p>Southern Ocean sea ice and oceanic fronts are known to play an important role on the climate system, carbon cycles, bottom ocean circulation, and Antarctic ice sheet. However, many models of the previous Past-climate Model Intercomparison Project (PMIP) underestimated sea-ice extent (SIE) for the Last Glacial Maximum (LGM)(Roche et al., 2012; Marzocchi and Jensen, 2017), mainly because of surface bias (Flato et al., 2013) that may have an impact on mean ocean temperature (MOT). Indeed, recent studies further suggest an important link between Southern Ocean sea ice and mean ocean temperature (Ferrari et al., 2014; Bereiter et al., 2018 among others). Misrepresent the Antarctic sea-ice extent could highly impact deep ocean circulation, the heat transport and thus the MOT. In this study, we will stress the relationship between the distribution of Antarctic sea-ice extent and the MOT through the analysis of the PMIP3 and PMIP4 exercise and by using a set of MIROC models. To date, the latest version of MIROC improve its representation of the LGM Antarctic sea-ice extent, affecting the deep circulation and the MOT distribution (Sherriff-Tadano et al., under review).</p><p>Our results show that available PMIP4 models have an overall improvement in term of LGM sea-ice extent compared to PMIP3, associated to colder deep and bottom ocean temperature. Focusing on MIROC (4m) models, we show that models accounting for Southern Ocean sea-surface temperature (SST) bias correction reproduce an Antarctic sea-ice extent, 2D-distribution, and seasonal amplitude in good agreement with proxy-based data. Finally, using PMIP-MIROC analyze, we show that it exists a relationship between the maximum SIE and the MOT, modulated by the Antarctic intermediate and bottom waters.</p>

2. The physical environment

2021 ◽  
pp. 14-38
Author(s):  
Klaus Dodds ◽  
Jamie Woodward
Keyword(s):  
Sea Ice ◽  
Physical Environment ◽  
Greenland Ice Sheet ◽  
The Arctic ◽  
Far North ◽  
Sea Ice Decline ◽  
Antarctic Continent ◽  
Polar Opposite ◽  
The Antarctic

‘The physical environment’ describes the Arctic as the polar opposite of the Antarctic continent as it is an ocean semi-enclosed by land. The rocks of the Arctic record key periods in Earth history. The Arctic environment has had an interesting path of evolution. Why is the Arctic cold today? The polar latitudes actually receive less solar energy than the rest of the Earth's surface. What is the key role of sea ice in the Arctic climate system? How does sea ice decline impact upon the Arctic Ocean? The Greenland ice sheet, high latitude glaciers, and the importance of permafrost in the far north are also important topics related to the physical environment.

Origins of the Russian Antarctic expedition: 1819–1821

Polar Record ◽  
2012 ◽  
Vol 49 (2) ◽  
pp. 180-192 ◽  
Author(s):  
Erki Tammiksaar ◽  
Tarmo Kiik
Keyword(s):  
Russian Literature ◽  
Russian Empire ◽  
Russian Government ◽  
The Real ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
Antarctic Continent ◽  
The Difference ◽  
The Russian Empire ◽  
The Antarctic

ABSTRACTIn 1819, the Russian government launched two expeditions: the first squadron of two ships departed to explore the southern polar areas, and the second set out for the northern polar areas. The expedition to the southern polar areas took place under the command of Fabian Gottlieb von Bellingshausen. Up to the present day, very little information is available, from the Russian literature, about the initiator and main goals of the expedition. At the same time, the travels and main results of the expedition have been widely popularised, but not necessarily accurately, in Russian as well as in English. On the basis of recently discovered documents, this article attempts to establish who the initiator of these Russian expeditions was, how the expeditions were prepared, and whether the main tasks of the expeditions were realised. The conclusion is that Jean-Baptiste Prevost de Sansac, Marquis de Traversay was the initiator of the Russian Antarctic expedition, not the Russian navigators Adam Johan von Krusenstern, Otto von Kotzebue, Gavrila A. Sarychev or Vasilii M. Golovnin as stated in Soviet publications. The real aim of the expedition was to discover the Antarctic continent which would have added glory to de Traversay as well as to Emperor Alexander I and, in a wider sense, also to the Russian empire. All dates are given according to the old style calendar. The difference with the new style calendar is 12 days.

scholarly journals Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System, Version 5 (GEOS-5)

2016 ◽  
Vol 29 (9) ◽  
pp. 3199-3218 ◽  
Author(s):  
Feng Li ◽  
Yury V. Vikhliaev ◽  
Paul A. Newman ◽  
Steven Pawson ◽  
Judith Perlwitz ◽  
...  
Keyword(s):  
Climate Change ◽  
Southern Ocean ◽  
Sea Ice ◽  
Ozone Depletion ◽  
Stratospheric Ozone ◽  
Meridional Overturning Circulation ◽  
Stratospheric Chemistry ◽  
Earth Observing System ◽  
Antarctic Sea Ice ◽  
The Antarctic

Abstract Stratospheric ozone depletion plays a major role in driving climate change in the Southern Hemisphere. To date, many climate models prescribe the stratospheric ozone layer’s evolution using monthly and zonally averaged ozone fields. However, the prescribed ozone underestimates Antarctic ozone depletion and lacks zonal asymmetries. This study investigates the impact of using interactive stratospheric chemistry instead of prescribed ozone on climate change simulations of the Antarctic and Southern Ocean. Two sets of 1960–2010 ensemble transient simulations are conducted with the coupled ocean version of the Goddard Earth Observing System Model, version 5: one with interactive stratospheric chemistry and the other with prescribed ozone derived from the same interactive simulations. The model’s climatology is evaluated using observations and reanalysis. Comparison of the 1979–2010 climate trends between these two simulations reveals that interactive chemistry has important effects on climate change not only in the Antarctic stratosphere, troposphere, and surface, but also in the Southern Ocean and Antarctic sea ice. Interactive chemistry causes stronger Antarctic lower stratosphere cooling and circumpolar westerly acceleration during November–January. It enhances stratosphere–troposphere coupling and leads to significantly larger tropospheric and surface westerly changes. The significantly stronger surface wind stress trends cause larger increases of the Southern Ocean meridional overturning circulation, leading to year-round stronger ocean warming near the surface and enhanced Antarctic sea ice decrease.

Bird and mammal life recorded during the Antarctic drift of SY Aurora, 1915–16

Polar Record ◽  
1990 ◽  
Vol 26 (159) ◽  
pp. 277-288 ◽  
Author(s):  
P. D. Shaughnessy
Keyword(s):  
Southern Ocean ◽  
Ross Sea ◽  
Killer Whales ◽  
Food Items ◽  
Emperor Penguins ◽  
Sea Birds ◽  
Pack Ice ◽  
Antarctic Expedition ◽  
The Antarctic ◽  
Blue Whales

AbstractAfter landing the Ross Sea shore party of Shackleton's Imperial Trans-Antarctic Expedition at Cape Evans, McMurdo Sound, SY Aurora drifted for 313 days between May 1915 and March 1916 in the pack iceof the Ross Sea and Southern Ocean. During the drift A. H. Ninnis maintained observations of the fauna. He was out hunting on the pack ice on at least 86 days to augment the ship's slender provisions, taking 289 penguins, 10 other sea birds and 20 seals. He sighted whales on at least 15 days, including killer whales in July and August and four large whales, possibly blue whales, in November. He also noted birds returning south for the breeding season in spring, progress of moult in emperor penguins, pupping of crabeater and leopard seals, and food items of several seals and seabirds. Most of his report is presented here, edited to improve its readability and remove abbreviations; the text is preceded by a brief summary of the fauna seen and followed by footnotes on some of his observations.

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