Search Results - "R. Hudson, Stephen"

Improved Performance of ERA5 in Arctic Gateway Relative to Four Global Atmospheric Reanalyses by Graham, Robert M., Hudson, Stephen R., Maturilli, Marion

“…Here we evaluate five atmospheric reanalyses in an Arctic gateway during late summer. The reanalyses include ERA5, ERA‐Interim, Japanese 55 year Re‐Analysis…”
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Increasing frequency and duration of Arctic winter warming events by Graham, Robert M., Cohen, Lana, Petty, Alek A., Boisvert, Linette N., Rinke, Annette, Hudson, Stephen R., Nicolaus, Marcel, Granskog, Mats A.

“…Near‐surface air temperatures close to 0°C were observed in situ over sea ice in the central Arctic during the last three winter seasons. Here we use in situ…”
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Meteorological conditions in a thinner Arctic sea ice regime from winter to summer during the Norwegian Young Sea Ice expedition (N‐ICE2015) by Cohen, Lana, Hudson, Stephen R., Walden, Von P., Graham, Robert M., Granskog, Mats A.

“…Atmospheric measurements were made over Arctic sea ice north of Svalbard from winter to early summer (January–June) 2015 during the Norwegian Young Sea Ice…”
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Leads in Arctic pack ice enable early phytoplankton blooms below snow-covered sea ice by Assmy, Philipp, Fernández-Méndez, Mar, Duarte, Pedro, Meyer, Amelie, Randelhoff, Achim, Mundy, Christopher J., Olsen, Lasse M., Kauko, Hanna M., Bailey, Allison, Chierici, Melissa, Cohen, Lana, Doulgeris, Anthony P., Ehn, Jens K., Fransson, Agneta, Gerland, Sebastian, Hop, Haakon, Hudson, Stephen R., Hughes, Nick, Itkin, Polona, Johnsen, Geir, King, Jennifer A., Koch, Boris P., Koenig, Zoe, Kwasniewski, Slawomir, Laney, Samuel R., Nicolaus, Marcel, Pavlov, Alexey K., Polashenski, Christopher M., Provost, Christine, Rösel, Anja, Sandbu, Marthe, Spreen, Gunnar, Smedsrud, Lars H., Sundfjord, Arild, Taskjelle, Torbjørn, Tatarek, Agnieszka, Wiktor, Jozef, Wagner, Penelope M., Wold, Anette, Steen, Harald, Granskog, Mats A.

“…The Arctic icescape is rapidly transforming from a thicker multiyear ice cover to a thinner and largely seasonal first-year ice cover with significant…”
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A comparison of the two Arctic atmospheric winter states observed during N‐ICE2015 and SHEBA by Graham, Robert M., Rinke, Annette, Cohen, Lana, Hudson, Stephen R., Walden, Von P., Granskog, Mats A., Dorn, Wolfgang, Kayser, Markus, Maturilli, Marion

“…Winter time atmospheric observations from the 2015 Norwegian young sea‐ICE campaign (N‐ICE2015) are compared with data from the 1997–1998 Surface Heat Budget…”
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Winter storms accelerate the demise of sea ice in the Atlantic sector of the Arctic Ocean by Graham, Robert M., Itkin, Polona, Meyer, Amelie, Sundfjord, Arild, Spreen, Gunnar, Smedsrud, Lars H., Liston, Glen E., Cheng, Bin, Cohen, Lana, Divine, Dmitry, Fer, Ilker, Fransson, Agneta, Gerland, Sebastian, Haapala, Jari, Hudson, Stephen R., Johansson, A. Malin, King, Jennifer, Merkouriadi, Ioanna, Peterson, Algot K., Provost, Christine, Randelhoff, Achim, Rinke, Annette, Rösel, Anja, Sennéchael, Nathalie, Walden, Von P., Duarte, Pedro, Assmy, Philipp, Steen, Harald, Granskog, Mats A.

“…A large retreat of sea-ice in the ‘stormy’ Atlantic Sector of the Arctic Ocean has become evident through a series of record minima for the winter maximum…”
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Effect of frequent winter warming events (storms) and snow on sea-ice growth – a case from the Atlantic sector of the Arctic Ocean during the N-ICE2015 campaign by Merkouriadi, Ioanna, Cheng, Bin, Hudson, Stephen R., Granskog, Mats A.

“…We examine the relative effect of warming events (storms) and snow cover on thermodynamic growth of Arctic sea ice in winter. We use a 1-D snow and ice…”
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Floating ice-algal aggregates below melting arctic sea ice by Assmy, Philipp, Ehn, Jens K, Fernández-Méndez, Mar, Hop, Haakon, Katlein, Christian, Sundfjord, Arild, Bluhm, Katrin, Daase, Malin, Engel, Anja, Fransson, Agneta, Granskog, Mats A, Hudson, Stephen R, Kristiansen, Svein, Nicolaus, Marcel, Peeken, Ilka, Renner, Angelika H H, Spreen, Gunnar, Tatarek, Agnieszka, Wiktor, Jozef

“…During two consecutive cruises to the Eastern Central Arctic in late summer 2012, we observed floating algal aggregates in the melt-water layer below and…”
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Seasonality of spectral albedo and transmittance as observed in the Arctic Transpolar Drift in 2007 by Nicolaus, Marcel, Gerland, Sebastian, Hudson, Stephen R., Hanson, Susanne, Haapala, Jari, Perovich, Donald K.

“…The first continuous and high temporal resolution record of spectral albedo and transmittance of snow and sea ice in the Arctic Ocean over an entire summer…”
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Spectral bidirectional reflectance of Antarctic snow: Measurements and parameterization by Hudson, Stephen R., Warren, Stephen G., Brandt, Richard E., Grenfell, Thomas C., Six, Delphine

“…The bidirectional reflectance distribution function (BRDF) of snow was measured from a 32‐m tower at Dome C, at latitude 75°S on the East Antarctic Plateau…”
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Photogrammetric retrieval and analysis of small scale sea ice topography during summer melt by Divine, Dmitry V., Pedersen, Christina A., Karlsen, Tor Ivan, Aas, Harald Faste, A. Granskog, Mats, R. Hudson, Stephen, Gerland, Sebastian

“…The paper presents a setup for photogrammetric retrievals of small scale sea ice surface topography using low-altitude aerial imagery. The setup features two…”
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A modern concept for autonomous and continuous measurements of spectral albedo and transmittance of sea ice by Nicolaus, Marcel, Hudson, Stephen R., Gerland, Sebastian, Munderloh, Karin

“…Time series of irradiance data measured on sea ice with high temporal and spectral resolution are needed for advancing studies of atmosphere–ice–ocean…”
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A Look at the Surface-Based Temperature Inversion on the Antarctic Plateau by Hudson, Stephen R., Brandt, Richard E.

“…Data from radiosondes, towers, and a thermistor string are used to characterize the temperature inversion at two stations: the Amundsen-Scott Station at the…”
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Antarctic Blue Ice Areas are hydrologically active, nutrient rich and contain microbially diverse cryoconite holes by Nowak, Aga, Isaksson, Elisabeth, Sunde, Øyvind, Elvevold, Synnøve, Sandven, Håkon, Moholdt, Geir, Hudson, Stephen R., Urset, Anne, Edwards, Arwyn, Rassner, Sara M. E., Pearce, David, Hamre, Børge, Hodson, Andrew

“…Antarctica is the coldest, windiest and least inhabited place on Earth. One of its most enigmatic regions is scoured by katabatic winds blue ice that covers…”
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The importance of vertical resolution in sea ice algae production models by Duarte, Pedro, Assmy, Philipp, Hop, Haakon, Spreen, Gunnar, Gerland, Sebastian, Hudson, Stephen R.

“…In this study an ice-algal mathematical model is used to resolve the vertical fine structure of sea ice with ice algae, and results are compared to simulations…”
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A new approach to meteorological observations on remote polar glaciers using open-source internet of things technologies by Filhol, Simon, Lefeuvre, Pierre-Marie, Ibañez, Juan David, Hulth, John, Hudson, Stephen R., Gallet, Jean-Charles, Schuler, Thomas Vikhamar, Burkhart, John F.

“…Key regions of the world lack sufficient infrastructure to collect geophysical observations, often due to logistical challenges such as difficult accessibility…”
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The seeding of ice algal blooms in Arctic pack ice: The multiyear ice seed repository hypothesis by Olsen, Lasse M., Laney, Samuel R., Duarte, Pedro, Kauko, Hanna M., Fernández‐Méndez, Mar, Mundy, Christopher J., Rösel, Anja, Meyer, Amelie, Itkin, Polona, Cohen, Lana, Peeken, Ilka, Tatarek, Agnieszka, Róźańska‐Pluta, Magdalena, Wiktor, Józef, Taskjelle, Torbjørn, Pavlov, Alexey K., Hudson, Stephen R., Granskog, Mats A., Hop, Haakon, Assmy, Philipp

“…During the Norwegian young sea ICE expedition (N‐ICE2015) from January to June 2015 the pack ice in the Arctic Ocean north of Svalbard was studied during four…”
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Windows in Arctic sea ice: Light transmission and ice algae in a refrozen lead by Kauko, Hanna M., Taskjelle, Torbjørn, Assmy, Philipp, Pavlov, Alexey K., Mundy, C. J., Duarte, Pedro, Fernández‐Méndez, Mar, Olsen, Lasse M., Hudson, Stephen R., Johnsen, Geir, Elliott, Ashley, Wang, Feiyue, Granskog, Mats A.

“…The Arctic Ocean is rapidly changing from thicker multiyear to thinner first‐year ice cover, with significant consequences for radiative transfer through the…”
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Science Outreach Using Social Media: OCEANOGRAPHY FROM THE LAB TO THE PUBLIC by Meyer, Amelie, Pavlov, Alexey K., Rösel, Anja, Negrel, Jean, Itkin, Polona, Cohen, Lana, King, Jennifer, Gerland, Sebastian, Hudson, Stephen R., de Steur, Laura, Dodd, Paul A., Crews, Laura, Bratrein, Marius, Granskog, Mats A., Cobbing, Nick

“…Communication is a key aspect of a scientist's work. Part of their mandate is to communicate findings not only to the research community, through…”
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An explanation for the effect of clouds over snow on the top-of-atmosphere bidirectional reflectance by Hudson, Stephen R., Warren, Stephen G.

“…It has been a long‐standing puzzle why clouds, which should interact with solar radiation similarly to a thin layer of snow, have such a dramatic effect on the…”
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