Showing papers in "Polar Science in 2018"

TL;DR: In this paper, the spectral-band ratio indices were developed using Landsat-8 and ASTER bands and proposed for Antarctic environments to map spectral signatures of snow/ice, iron oxide/hydroxide minerals, Al-OH-bearing and Fe, Mg-OH and CO3 mineral zones, and quartz-rich felsic and mafic-to-ultramafic lithological units.

TL;DR: In this article, the authors analyzed and critically summarized facts and impacts of cloudburst events through compilation of hydrometeorological records and analysis of available data in the Indian Himalayan Region (IHR).

TL;DR: In this paper, the authors show two stationary temperature/geopotential height patterns where warmer Arctic temperatures have reinforced existing tropospheric jet stream wave amplitudes over North America: a Greenland/Baffin Block pattern during December 2010 and an Alaska Ridge Pattern during December 2017.

TL;DR: In this article, the average increase in temperature is the most prominent change in Antarctic Peninsula region and the Antarctic plant growth is largely limited to the coastal areas of Sub- and Maritime Antarctic regions.

TL;DR: The natural products discovered, isolated and characterized from the organisms found in the polar (Arctic and Antarctic) regions are described to illustrate the tremendous potential of the polar organisms as a source of new therapeutic agents for infectious and lifestyle associated diseases.

TL;DR: In this paper, the authors examined microbial succession along a chronosequence twice with a 10-year interval in a High Arctic glacier foreland and found that the largest shift in community structure over 10 years was observed in the newly exposed sites after deglaciation.

TL;DR: In this article, the role of black carbon (BC) deposition in darkening the polar snow in different sunlit seasons and estimated the scavenging ratio of BC over both the poles from simultaneous measurements of atmospheric and snow deposited BC concentrations.

TL;DR: In this paper, the authors assess the precipitation and surface air temperature (SAT) of Antarctica (90 oS to 60 oS) using 49 Coupled Model Intercomparison Project phase 5 (CMIP5) global climate models and the European Centre for Medium-range Weather Forecasts “Interim” reanalysis (ERA-Interim); the National Centers for Environmental Prediction Climate Forecast System Reanalysis (CFSR); the Japan Meteorological Agency 55-year Reanalysis(JRA-55); and the Modern Era Retrospective-analysis for Research and

TL;DR: By using SatGravRET2014 gravito-topography model, based also on satellite GRACE and GOCE data, the authors computed and plotted the gravity disturbances, the Marussi tensor of the second derivatives of the disturbing potential, the gravity invariants and their specific ratio, the strike angle and the virtual deformations for the Lake Vostok (LV) area in Antarctica.

TL;DR: A review of up-to-date diatom-based reconstruction methods applicable for paleoceanographic research for the northern North Atlantic and Arctic regions, and discuss the knowledge gaps in the Arctic research can be solved by diatom applications as mentioned in this paper.

TL;DR: In this article, the authors present a novel and useful analytical technique to identify risk factors and calculate risk share proportions in the prospective Arctic shipping strategic alliance, an alliance formed by shipping companies, using the combination of interpretive structural modeling (ISM) and fuzzy analytic network process (F-ANP).

TL;DR: In this paper, the authors computed teleseismic receiver functions for 10 broadband stations in the Bransfield Basin to obtain robust constraints on the lithospheric structure and crustal thickness of the BB, as well as the AP and SSI.

TL;DR: In this paper, the role of sea ice in the biogeochemical cycling of trace metals is investigated and the geochemical behaviour of trace metal and their accumulation into sea ice, dissolved (D, dissolved) is explained.

TL;DR: In this article, the past environmental changes in and around Ny-Alesund, Svalbard, Arctic Region were analyzed using 20 sediment samples of a 1'm deep trench.

TL;DR: In this paper, the spatial distribution of benthic foraminiferal morpho-groups has been documented from the Kongsfjorden-Krossfjordens, to assess its environmental significance.

TL;DR: In this article, the authors investigated the predictability of the 2012 Great Arctic Cyclone (AC12) that exhibited a minimum central pressure of 964hPa on 6 August 2012, using five medium-range ensemble forecasts.

TL;DR: In this article, three sediment cores collected from GL-1, V-1(Vetehiya) and L-6 lakes of Schirmacher Oasis, East Antarctica were studied for sediment components (sand, silt, clay, total organic carbon, total nitrogen, TOC/TN ratio and biogenic silica), major elements (Aluminium, Iron and Manganese) and trace metals (Chromium, Zinc, Lead, Cobalt, Cadmium and Nickel).

TL;DR: In this article, the authors reviewed the progress of India's scientific research in polar meteorology and presented the analysis of 25 years meteorological data collected at Maitri station for the period 1991-2015.

TL;DR: In this paper, the authors used satellite-derived sea-ice concentration data and reanalysis shortwave radiation data to estimate solar heating in summer in the Chukchi Sea using in-situ data obtained by the R/V Mirai and NCEP-CFSR/CFSv2.

TL;DR: In this article, the role of sedimentary processes in the lake of Schirmacher Oasis (SO), East Antarctica and their periodicities to understand the forcing mechanism responsible for the regional climate variations was discussed.

TL;DR: In this article, the authors compare energy balance (EB) and temperature index (TI) snow/ice melt methods for glacio-hydrological modeling in the Alps, and show that the EB melt model performs better if driven with correct meteorological data sets from catchment-representative stations.

TL;DR: In this article, the authors reported the first time the presence of larval stages (zoea II) of C. bairdi far from its northern limit of the distribution, in the south of St. Lawrence Island during 1991, and even crossing the Bering Strait into the Chukchi Sea during 1992.

TL;DR: Schirmacher Oasis is an emergent isolated landmass, surrounded on all sides by ice, occurring along the Princess Astrid Coast in central Dronning Maud Land, East Antarctica as discussed by the authors.

TL;DR: In this paper, a series of experiments were carried out to test the actual air velocity required to move ice cores and ice chips with different sizes and clearances between the ice core and the inner wall of the pipe, and the minimum air volume requirements with different borehole depths in ice core drilling with air reverse circulation were confirmed.

TL;DR: In this paper, a set of tiles placed on the shore of Potter Cove, 25 de Mayo (King George) Island were colonized with a limpet Nacella concinna, which was removed from the tiles to characterize the extracellular mucilage, carry out floristic determination and perform grazing experiments with the limpet.

TL;DR: In this article, the authors used AMS 14C dates and geomorphic features for the reconstruction of palaeoclimate in the Ny-Alesund region, which is characterised by diversified surface processes which carve the landscape and exhibits variable and complex landforms.

TL;DR: In this article, the authors constrain the depositional age of these sedimentary rocks to test models relating to the timing of the closure of the Mozambique Ocean, the southern segment of the EAO, since Tonian time.

TL;DR: In this paper, surface sediment samples from Kongsfjorden were analysed for polycyclic aromatic hydrocarbons (PAHs) to understand their source and process responsible for their deposition in the sediment.

TL;DR: In this article, a short sediment core has been collected from two fjord system Krossfjorden and Kongfjords, located between Lat: 78° 50′ to 79° 30' N and Long: 11° −13° E in the west coast of Svalbard (Arctic Ocean).

TL;DR: In this paper, the authors investigated the source of sediments and depositional processes of surface sediments along the Prydz Bay through grain size, organic carbon, nitrogen, phosphorus, calcium carbonate and metal concentration.