Blar i Geophysical Institute på forfatter "Polyakov, Igor V."
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Arctic tidal current atlas
Baumann, Till Martin; Polyakov, Igor V.; Padman, Laurie; Danielson, Seth L.; Fer, Ilker; Janout, Markus; Williams, William; Pnyushkov, Andrey V. (Journal article; Peer reviewed, 2020)Tidal and wind-driven near-inertial currents play a vital role in the changing Arctic climate and the marine ecosystems. We compiled 429 available moored current observations taken over the last two decades throughout the ... -
Intensification of Near‐Surface Currents and Shear in the Eastern Arctic Ocean
Polyakov, Igor V.; Rippeth, Tom; Fer, Ilker; Baumann, Till Martin; Carmack, Eddy C.; Ivanov, Vladimir V.; Janout, Markus; Padman, Laurie; Pnyushkov, A.V.; Rember, Robert (Journal article; Peer reviewed, 2020)A 15‐year (2004–2018) record of mooring observations from the upper 50 m of the ocean in the eastern Eurasian Basin reveals increased current speeds and vertical shear, associated with an increasing coupling between wind, ... -
One more step toward a warmer Arctic
Polyakov, Igor V.; Beszczynska-Möller, Agnieszka; Carmack, Eddy C.; Dmitreko, Igor A.; Fahrbach, E.; Frolov, Ivan E.; Gerdes, Rüdiger; Hansen, Edmond; Holfort, Jürgen; Ivanov, Vladimir V.; Johnson, Mark A.; Karcher, Michael; Kauker, Frank; Morison, James; Orvik, Kjell Arild; Schauer, Ursula; Simmons, Harper L.; Skagseth, Øystein; Sokolov, Vladimir T.; Steele, Michael; Timokhov, Leonid A.; Walsh, David; Walsh, John E. (Peer reviewed; Journal article, 2005-09-09)This study was motivated by a strong warming signal seen in mooring-based and oceanographic survey data collected in 2004 in the Eurasian Basin of the Arctic Ocean. The source of this and earlier Arctic Ocean changes lies ... -
A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century
Pnyushkov, A.V.; Polyakov, Igor V.; Alekseev, G.V.; Ashik, I.M.; Baumann, Till Martin; Carmack, E.; Ivanov, Vladimir; Rember, Robert (Journal article; Peer reviewed, 2021)Mooring observations in the eastern Eurasian Basin of the Arctic Ocean showed that mean 2013–2018 along-slope volume and heat (calculated relative to the freezing temperature) transports in the upper 800 m were 4.8 ± 0.1 ... -
Towards quantifying the increasing role of oceanic heat in sea ice loss in the new Arctic
Carmack, Eddy; Polyakov, Igor V.; Padman, Laurie; Fer, Ilker; Hunke, Elizabeth Clare; Hutchings, Jennifer J.; Jackson, Jennifer M.; Kelley, Daǹ E.; Kwok, Ronald; Layton, Chantelle; Melling, Humfrey; Perovich, Donald K.; Persson, Ola G.; Ruddick, Barry; Timmermans, Mary Louise E.; Toole, John M.; Ross, Tetjana; Vavrus, Steve J.; Winsor, Peter R. (Peer reviewed; Journal article, 2015)The loss of Arctic sea ice has emerged as a leading signal of global warming. This, together with acknowledged impacts on other components of the Earth system, has led to the term “the new Arctic.” Global coupled climate ... -
Vertical structure of recent arctic warming from observed data and reanalysis products
Alexeev, V. A.; Esau, Igor N.; Polyakov, Igor V.; Byam, S. J.; Sorokina, Svetlana (Peer reviewed; Journal article, 2012-03)Spatiotemporal patterns of recent (1979–2008) air temperature trends are evaluated using three reanalysis datasets and radiosonde data. Our analysis demonstrates large discrepancies between the reanalysis datasets, possibly ... -
Weakening of Cold Halocline Layer Exposes Sea Ice to Oceanic Heat in the Eastern Arctic Ocean
Polyakov, Igor V.; Rippeth, Tom; Fer, Ilker; Alkire, Matthew B.; Carmack, Eddy; Ingvaldsen, Randi Brunvær; Ivanov, Vladimir V.; Janout, Markus; Lind, Sigrid; Padman, Laurie; Pnyushkov, Andrey V.; Rember, Robert (Journal article; Peer reviewed, 2020)A 15-yr duration record of mooring observations from the eastern (>70°E) Eurasian Basin (EB) of the Arctic Ocean is used to show and quantify the recently increased oceanic heat flux from intermediate-depth (~150–900 m) ...