Browsing Geophysical Institute by Journals "Geophysical Research Letters"
Now showing items 21-40 of 41
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Mean structure and seasonality of the Norwegian Atlantic Front Current along the Mohn Ridge from repeated glider transects
(Peer reviewed; Journal article, 2019)The poleward flow of Atlantic Water in the Nordic Seas forms the upper limb of the meridional overturning circulation driving an important heat transport. The Norwegian Atlantic Front Current along the Mohn Ridge between ... -
Mechanisms underlying recent Arctic atlantification
(Journal article; Peer reviewed, 2020-06-20)Recent warming and reduced sea ice concentrations in the Atlantic sector of the Arctic Ocean are the main signatures of ongoing Arctic “Atlantification.” The mechanisms driving the warming trends are nevertheless still ... -
Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea
(Journal article; Peer reviewed, 2020)Understanding changes in Antarctic ice shelf basal melting is a major challenge for predicting future sea level. Currently, warm Circumpolar Deep Water surrounding Antarctica has limited access to the Weddell Sea continental ... -
On effect of wave breaking on short wind waves
(Peer reviewed; Journal article, 2004-10)The paper presents an attempt to estimate short wave generation by wave breaking. A breaking wave crest disturbs the surface and generates sub-surface turbulence. The locally disturbed area further disperses and feeds short ... -
Predictable Variations of the Carbon Sinks and Atmospheric CO2 Growth in a Multi-Model Framework
(Journal article; Peer reviewed, 2021)Inter-annual to decadal variability in the strength of the land and ocean carbon sinks impede accurate predictions of year-to-year atmospheric carbon dioxide (CO2) growth rate. Such information is crucial to verify the ... -
Recent and future changes of the Arctic sea-ice cover
(Peer reviewed; Journal article, 2008)The present and future state of the Arctic sea ice cover is explored using new observations and a coupled one dimensional air–sea–ice model. Updated satellite observations of Fram Strait ice-area export show an increase ... -
The Role of Mid-latitude Westerly Jet in the Impacts of November Ural Blocking on Early-Winter Warmer Arctic-Colder Eurasia Pattern
(Journal article; Peer reviewed, 2022)Based on statistical analysis using observations and idealized model simulations, previous studies have revealed the potential response of early-winter atmospheric circulation and temperature anomalies to November Ural ... -
Sea ice velocity in the Fram Strait monitored by moored instruments
(Peer reviewed; Journal article, 2003-10-04)The Fram Strait sea ice velocity was measured by means of a new method using moored Doppler Current Meters in the period 1996–2000. Almost 3 years of ice velocity observations near 79N 5W are analyzed. The average southward ... -
The Seasonal and Regional Transition to an Ice-Free Arctic
(Journal article; Peer reviewed, 2021)The Arctic sea ice cover is currently retreating and will continue its retreat in a warming world. However, the loss of sea ice is neither regionally nor seasonally uniform. Here, we present the first regional and seasonal ... -
Seasonal Outflow of Ice Shelf Water Across the Front of the Filchner Ice Shelf, Weddell Sea, Antarctica
(Peer reviewed; Journal article, 2018-04)The ice shelf water (ISW) found in the Filchner Trough, located in the southern Weddell Sea, Antarctica, is climatically important; it descends into the deep Weddell Sea contributing to bottom water formation, and it blocks ... -
Snow-Atmosphere Humidity Exchange at the Ice Sheet Surface Alters Annual Mean Climate Signals in Ice Core Records
(Journal article; Peer reviewed, 2023)Surface processes alter the water stable isotope signal of the surface snow after deposition. However, it remains an open question to which extent surface post-depositional processes should be considered when inferring ... -
Supercooled Southern Ocean Waters
(Journal article; Peer reviewed, 2020)In cold polar waters, temperatures sometimes drop below the freezing point, a process referred to as supercooling. However, observational challenges in polar regions limit our understanding of the spatial and temporal ... -
Surface-Forced Variability in the Nordic Seas Overturning Circulation and Overflows
(Journal article; Peer reviewed, 2023)Water mass transformation in the Nordic Seas and the associated overflow of dense waters across the Greenland-Scotland Ridge (GSR) acts to maintain the lower limb of the Atlantic meridional overturning circulation. Here, ... -
Tidally Forced Lee Waves Drive Turbulent Mixing Along the Arctic Ocean Margins
(Journal article; Peer reviewed, 2020)In the Arctic Ocean, limited measurements indicate that the strongest mixing below the atmospherically forced surface mixed layer occurs where tidal currents are strong. However, mechanisms of energy conversion from tides ... -
Time Scales and Sources of European Temperature Variability
(Peer reviewed; Journal article, 2018-04)Skillful predictions of continental climate would be of great practical benefit for society and stakeholders. It nevertheless remains fundamentally unresolved to what extent climate is predictable, for what features, at ... -
Towards a more saline North Atlantic and a fresher Arctic under global warming
(Peer reviewed; Journal article, 2006-11-14)Most atmosphere-ocean general circulation models (GCMs) forced with increasing greenhouse gas concentrations predict enhanced atmospheric moisture transports to the high northern latitudes. Together with melting of Arctic ... -
Tropical Atmospheric Response of Atlantic Niños to Changes in the Ocean Background State
(Journal article; Peer reviewed, 2023)Since the 1970s, Atlantic Niños during boreal summer have been linked to Pacific La Niñas the following winter. Earlier studies have explained the appearance of the Atlantic-Pacific teleconnection with changing Atlantic ... -
Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models
(Journal article; Peer reviewed, 2021)The ocean heat transport from the North Atlantic to the Barents Sea impacts the sea ice extent and the energy budget of the Arctic. The analyzed climate models from the fifth (CMIP5) and sixth Coupled Model Intercomparison ... -
Warm Circumpolar Deep Water at the Western Getz Ice Shelf Front, Antarctica
(Peer reviewed; Journal article, 2019-01-04)The Getz Ice Shelf is one of the largest sources of fresh water from ice shelf basal melt in Antarctica. We present new observations from three moorings west of Siple Island 2016–2018. All moorings show a persistent flow ... -
Wind and wave extremes over the world oceans from very large ensembles
(Peer reviewed; Journal article, 2014-07)Global return values of marine wind speed and significant wave height are estimated from very large aggregates of archived ensemble forecasts at +240 h lead time. Long lead time ensures that the forecasts represent independent ...