Search Results - "Langen, Peter L."

Past perspectives on the present era of abrupt Arctic climate change by Jansen, Eystein, Christensen, Jens Hesselbjerg, Dokken, Trond, Nisancioglu, Kerim H., Vinther, Bo M., Capron, Emilie, Guo, Chuncheng, Jensen, Mari F., Langen, Peter L., Pedersen, Rasmus A., Yang, Shuting, Bentsen, Mats, Kjær, Helle A., Sadatzki, Henrik, Sessford, Evangeline, Stendel, Martin

“…Abrupt climate change is a striking feature of many climate records, particularly the warming events in Greenland ice cores. These abrupt and high-amplitude…”
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The Impact of Regional Arctic Sea Ice Loss on Atmospheric Circulation and the NAO by Pedersen, Rasmus A., Cvijanovic, Ivana, Langen, Peter L., Vinther, Bo M.

“…Reduction of the Arctic sea ice cover can affect the atmospheric circulation and thus impact the climate beyond the Arctic. The atmospheric response may,…”
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The implication of nonradiative energy fluxes dominating Greenland ice sheet exceptional ablation area surface melt in 2012 by Fausto, Robert S., As, Dirk, Box, Jason E., Colgan, William, Langen, Peter L., Mottram, Ruth H.

“…During two exceptionally large July 2012 multiday Greenland ice sheet melt episodes, nonradiative energy fluxes (sensible, latent, rain, and subsurface…”
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Algae Drive Enhanced Darkening of Bare Ice on the Greenland Ice Sheet by Stibal, Marek, Box, Jason E., Cameron, Karen A., Langen, Peter L., Yallop, Marian L., Mottram, Ruth H., Khan, Alia L., Molotch, Noah P., Chrismas, Nathan A. M., Calì Quaglia, Filippo, Remias, Daniel, Smeets, C. J. P. Paul, Broeke, Michiel R., Ryan, Jonathan C., Hubbard, Alun, Tranter, Martyn, As, Dirk, Ahlstrøm, Andreas P.

“…Surface ablation of the Greenland ice sheet is amplified by surface darkening caused by light‐absorbing impurities such as mineral dust, black carbon, and…”
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The last interglacial climate: comparing direct and indirect impacts of insolation changes by Pedersen, Rasmus A., Langen, Peter L., Vinther, Bo M.

“…The last interglacial climate was influenced by substantial changes in the annual insolation cycle that led to a warmer climate state with pronounced high…”
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Separation of Contributions from Radiative Feedbacks to Polar Amplification on an Aquaplanet by Langen, Peter L., Graversen, Rune Grand, Mauritsen, Thorsten

“…When climate is forced by a doubling of CO₂, a number of feedback processes are induced, such as changes of water vapor, clouds, and surface albedo. Here the…”
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Outlet glacier flow response to surface melt: based on analysis of a high-resolution satellite data set by Larsen, Signe H., Ahlstrøm, Andreas P., Karlsson, Nanna B., Kusk, Anders, Langen, Peter L., Hvidberg, Christine S.

“…The dynamics of the Greenland Ice Sheet are affected by surface meltwater reaching the base of the ice, altering ice contact with the bedrock. Lack of…”
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Dynamic simulations of Vatnajökull ice cap from 1980 to 2300 by Schmidt, Louise Steffensen, Ađalgeirsdóttir, Guðfinna, Pálsson, Finnur, Langen, Peter L., Guđmundsson, Sverrir, Björnsson, Helgi

“…Abstract Like most ice caps and glaciers worldwide, Icelandic glaciers are retreating in a warming climate. Here, the evolution of Vatnajökull ice cap,…”
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Asynchronous behavior of outlet glaciers feeding Godthåbsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland by MOTYKA, ROMAN J., CASSOTTO, RYAN, TRUFFER, MARTIN, KJELDSEN, KRISTIAN K., VAN AS, DIRK, KORSGAARD, NIELS J., FAHNESTOCK, MARK, HOWAT, IAN, LANGEN, PETER L., MORTENSEN, JOHN, LENNERT, KUNUK, RYSGAARD, SØREN

“…We assess ice loss and velocity changes between 1985 and 2014 of three tidewater and five-land terminating glaciers in Godthåbsfjord (Nuup Kangerlua),…”
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The firn meltwater Retention Model Intercomparison Project (RetMIP): evaluation of nine firn models at four weather station sites on the Greenland ice sheet by Vandecrux, Baptiste, Mottram, Ruth, Langen, Peter L, Fausto, Robert S, Olesen, Martin, Stevens, C. Max, Verjans, Vincent, Leeson, Amber, Ligtenberg, Stefan, Kuipers Munneke, Peter, Marchenko, Sergey, van Pelt, Ward, Meyer, Colin R, Simonsen, Sebastian B, Heilig, Achim, Samimi, Samira, Marshall, Shawn, Machguth, Horst, MacFerrin, Michael, Niwano, Masashi, Miller, Olivia, Voss, Clifford I, Box, Jason E

“…Perennial snow, or firn, covers 80 % of the Greenland ice sheet and has the capacity to retain surface meltwater, influencing the ice sheet mass balance and…”
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Polar amplification as a preferred response in an idealized aquaplanet GCM by LANGEN, Peter L, ALEXEEV, Vladimir A

“…An aquaplanet atmospheric general circulation model (GCM) coupled to a mixed layer ocean is analyzed in terms of its polar amplified surface temperature…”
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Towards quantifying the glacial runoff signal in the freshwater input to Tyrolerfjord-Young Sound, NE Greenland by Citterio, Michele, Sejr, Mikael K., Langen, Peter L., Mottram, Ruth H., Abermann, Jakob, Larsen, Signe Hillerup, Skov, Kirstine, Lund, Magnus

“…Terrestrial freshwater runoff strongly influences physical and biogeochemical processes at the fjord scale and can have global impacts when considered at the…”
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The dynamic range of poleward energy transport in an atmospheric general circulation model by Caballero, Rodrigo, Langen, Peter L.

“…Understanding the reasons for which current climate models fail to reproduce the low equator‐to‐pole temperature gradient of past warm periods is among the…”
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Abrupt shift in the observed runoff from the southwestern Greenland ice sheet by Ahlstrøm, Andreas P, Petersen, Dorthe, Langen, Peter L, Citterio, Michele, Box, Jason E

“…The recent decades of accelerating mass loss of the Greenland ice sheet have arisen from an increase in both surface meltwater runoff and ice flow discharge…”
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Sensitivity of Glacier Runoff to Winter Snow Thickness Investigated for Vatnajökull Ice Cap, Iceland, Using Numerical Models and Observations by Schmidt, Louise, Langen, Peter, Aðalgeirsdóttir, Guðfinna, Pálsson, Finnur, Guðmundsson, Sverrir, Gunnarsson, Andri

“…Several simulations of the surface climate and energy balance of Vatnajökull ice cap, Iceland, are used to estimate the glacier runoff for the period 1980–2015…”
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Response in atmospheric circulation and sources of Greenland precipitation to glacial boundary conditions by Langen, Peter L, Vinther, Bo M

“…The response in northern hemisphere atmospheric circulation and the resulting changes in moisture sources for Greenland precipitation to glacial boundary…”
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Polar Amplification in CCSM4: Contributions from the Lapse Rate and Surface Albedo Feedbacks by Graversen, Rune G., Langen, Peter L., Mauritsen, Thorsten

“…A vertically nonuniform warming of the troposphere yields a lapse rate feedback by altering the infrared irradiance to space relative to that of a vertically…”
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Application of PROMICE Q‐Transect in Situ Accumulation and Ablation Measurements (2000–2017) to Constrain Mass Balance at the Southern Tip of the Greenland Ice Sheet by Hermann, Mauro, Box, Jason E., Fausto, Robert S., Colgan, William T., Langen, Peter L., Mottram, Ruth, Wuite, Jan, Noël, Brice, Broeke, Michiel R., As, Dirk

“…With nine southern Greenland ice sheet ablation area locations, the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) “Q‐transect” is a source of…”
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Inflated Uncertainty in Multimodel‐Based Regional Climate Projections by Madsen, Marianne Sloth, Langen, Peter L., Boberg, Fredrik, Christensen, Jens Hesselbjerg

“…Multimodel ensembles are widely analyzed to estimate the range of future regional climate change projections. For an ensemble of climate models, the result is…”
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The future of tundra carbon storage in Greenland – Sensitivity to climate and plant trait changes by López-Blanco, Efrén, Langen, Peter L., Williams, Mathew, Christensen, Jens Hesselbjerg, Boberg, Fredrik, Langley, Kirsty, Christensen, Torben Røjle

“…The continuous change in observed key indicators such as increasing nitrogen deposition, temperatures and precipitation will have marked but uncertain…”
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