Results 91 to 100 of about 190,113 (342)

Extending monitoring with sediment archive approaches: Comparison of biomonitoring, metabarcoding, and biomarkers to assess past phytoplankton dynamics

Limnology and Oceanography: Methods, EarlyView.
Abstract Sedimentary archives can provide valuable insights into the study of anthropogenic impacts on marine and limnic ecosystems over centennial and millennial timescales, potentially extending the temporal breadth of observation‐based biomonitoring.
Juliane Romahn, Alexandra Schmidt, Jérôme Kaiser, Damian Baranski, Helge W. Arz, Laura S. Epp, Anke Kremp, Miklós Bálint   +7 more
wiley   +1 more source

Simulated Antarctic sea ice expansion reconciles climate model with observation

npj Climate and Atmospheric Science
Observations reveal Antarctic sea ice expansion and Southern Ocean surface cooling trends from 1979 to 2014, whereas climate models mostly simulate the opposite. Here I use historical ensemble simulations with multiple climate models to show that sea-ice
Wei Liu
doaj   +1 more source

Spatial-temporal variations of one-year ice in Antarctic different regions, 1988–2020

Ecological Indicators, 2023
In order to increase the comparability of Antarctic sea ice changes, we proposed a new method to quantitatively assess the spatial–temporal variation characteristics of Antarctic one-year ice based on daily Antarctic sea ice concentration data provided ...
Xingdong Wang, Hailong Zhou, Mingzhu Ji
doaj  

Multi-year spatial distribution of Antarctic sea ice (1988 - 2017)

Terrestrial, Atmospheric and Oceanic Sciences, 2021
In this study, we used daily sea-ice concentration data from the National Snow and Ice Data Center from 1988 to 2017 to investigate the spatial distribution of Antarctic sea ice by calculating the annual mean sea-ice concentration and multi-year sea ice ...
Xingdong Wang, Shuhui Yang, Zhankai Wu
doaj   +1 more source

Informativeness (information-bearing) of factors forming interannual variability of the Barents Sea and its individual areas ice coveren

Российская Арктика, 2023
The various combinations of factors that form an interannual variability of ice coveren in the western, northeastern and southeastern parts of the Barents Sea were analysed for the period 1950 ̶ 2022. The co-phased cyclic fluctuations between the Barents
Lis N.A., Cherniavskaia E.A., Mironov E.U., Timokhov L.A., Egorova E.S.   +4 more
doaj   +1 more source

The seasonality of Antarctic sea ice trends [PDF]

Geophysical Research Letters, 2014
AbstractAntarctic sea ice is experiencing a weak overall increase in area that is the residual of opposing regional trends. This study considers their seasonal pattern. In addition to traditional ice concentration and total ice area, temporal derivatives of these quantities are investigated (“intensification” and “expansion,” respectively).
openaire   +3 more sources

Active Layer Warming and Thickening on CALM‐S JGM, James Ross Island, in the Period 2013/14–2022/23

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The Circumpolar Active Layer Monitoring‐South (CALM‐S) site was established near the Johann Gregor Mendel (JGM) research station on James Ross Island in February 2014. The CALM‐S JGM grid, measuring 80 × 70 m, encompasses two distinct lithological units: a Holocene marine terrace (covering approximately 75% of the grid) and Cretaceous ...
Filip Hrbáček, Michaela Kňažková, Kamil Láska, Lucia Kaplan Pastíriková   +3 more
wiley   +1 more source

ENSO’s impact on linear and nonlinear predictability of Antarctic sea ice

npj Climate and Atmospheric Science
While the influence of ENSO on Antarctic sea ice variability is well-known, its role in sea ice predictability, both linear and nonlinear, remains unexplored.
Yunhe Wang, Xiaojun Yuan, Yibin Ren, Xiaofeng Li, Arnold L. Gordon   +4 more
doaj   +1 more source

The Association of Antarctic Sea Ice with the Subantarctic Mode and Antarctic Intermediate Waters during the Last Deglaciation

Proceedings, 2023
The Southern Ocean waters exchange freshwater, nutrients, carbon, heat, and salt to the Equator and influence the global carbon budget. Therefore, it is essential to understand the variations in Southern Ocean circulation during the last deglacial period
Gagan Mandal, Shih-Yu Lee, Jia-Yuh Yu
doaj   +1 more source

Antarctic bedrock topography uncertainty and ice sheet stability [PDF]

, 2015
All Rights Reserved. Antarctic bedrock elevation estimates have uncertainties exceeding 1km in certain regions. Bedrock elevation, particularly where the bedrock is below sea level and bordering the ocean, can have a large impact on ice sheet stability ...
Bassis, Collins, Cook, D. Pollard, DeConto, Dowsett, E. Gasson, Fretwell, Gladstone, Gomez, Holland, Mercer, Miller, Naish, Naish, Nick, Pal, Pattyn, Pollard, Pollard, Pollard, Pritchard, R. DeConto, Raymo, Schoof, Seki, Sun, Thompon, Weertman, Wilson, Young   +30 more
core   +2 more sources