Results 21 to 30 of about 606,839 (276)

Canadian forest fires, Icelandic volcanoes and increased local dust observed in six shallow Greenland firn cores [PDF]

Climate of the Past, 2022
Greenland ice cores provide information about past climate. Few impurity records covering the past 2 decades exist from Greenland. Here we present results from six firn cores obtained during a 426 km long northern Greenland traverse made in 2015 between ...
H. A. Kjær, P. Zens, S. Black, S. Black, K. H. Lund, A. Svensson, P. Vallelonga, P. Vallelonga   +7 more
doaj   +1 more source

The anatomy of past abrupt warmings recorded in Greenland ice

Nature Communications, 2021
Palaeodata resolution and dating limit the study of the sequence of changes across Earth during past abrupt warmings. Here, the authors show tight decadal-scale coupling between Greenland climate, North Atlantic sea ice and atmospheric circulation during
E. Capron, S. O. Rasmussen, T. J. Popp, T. Erhardt, H. Fischer, A. Landais, J. B. Pedro, G. Vettoretti, A. Grinsted, V. Gkinis, B. Vaughn, A. Svensson, B. M. Vinther, J. W. C. White   +13 more
doaj   +1 more source

Factors controlling the bifurcation structure of sea ice retreat [PDF]

, 2012
The contrast in surface albedo between sea ice and open ocean suggests the possibility of an unstable climate state flanked by two separate stable climate states. Previous studies using idealized single-column models and comprehensive climate models have
Eisenman, Ian
core   +1 more source

Response of Pacific-sector Antarctic ice shelves to the El Niño/Southern Oscillation. [PDF]

, 2018
Satellite observations over the past two decades have revealed increasing loss of grounded ice in West Antarctica, associated with floating ice shelves that have been thinning.
Adusumilli, S, Fricker, HA, Howard, S, Padman, L, Paolo, FS, Siegfried, MR   +5 more
core   +1 more source

The impact of a seasonally ice free Arctic Ocean on the temperature, precipitation and surface mass balance of Svalbard [PDF]

, 2012
The observed decline in summer sea ice extent since the 1970s is predicted to continue until the Arctic Ocean is seasonally ice free during the 21st Century. This will lead to a much perturbed Arctic climate with large changes in ocean surface energy flux.
Bamber, Jonathan L, Day, Jonathan J, Kohler, Jack, Valdes, Paul J   +3 more
core   +2 more sources

Measurement report: Comprehensive seasonal study of the composition and sources of submicron aerosol during the JULIAC campaign in Germany [PDF]

Atmospheric Chemistry and Physics
The seasonal variations of aerosol sources and their atmospheric evolution are investigated using observations from the year-long JULIAC (Jülich Atmospheric Chemistry Project) campaign (January–November 2019) in Jülich, Germany.
L. Liu, L. Liu, T. Hohaus, A. Hofzumahaus, F. Holland, H. Fuchs, H. Fuchs, R. Tillmann, B. Bohn, S. Andres, Z. Tan, Z. Tan, F. Rohrer, V. A. Karydis, V. Vardhan, V. Vardhan, P. Franke, A. C. Lange, A. Novelli, B. Winter, C. Cho, C. Cho, I. Gensch, S. Wedel, A. Wahner, A. Kiendler-Scharr   +25 more
doaj   +1 more source

An optimization-based approach to track the Asian summer monsoon anticyclone across daily and interannual variability [PDF]

Atmospheric Chemistry and Physics
The definition of the boundary of the Asian summer monsoon anticyclone (ASMA) in the upper troposphere-lower stratosphere (UTLS) (350–410 K) is a known challenge that highly impacts the information about the anticyclone's behavior and affects the results
O. Kachula, B. Vogel, G. Günther, R. Müller   +3 more
doaj   +1 more source

Temperature-dependent rate coefficients for the reactions of OH radicals with selected alkanes, aromatic compounds, and monoterpenes [PDF]

Atmospheric Chemistry and Physics
The rate coefficients of the reaction of hydroxyl radicals (OH) with 12 different volatile organic compounds (VOCs), namely methane, ethane, propane, n-butane, methyl vinyl ketone (MVK), γ-terpinene, Δ3-carene, myrcene, toluene, o-xylene, m-xylene, and ...
F. Berg, A. Novelli, R. Dubus, A. Hofzumahaus, F. Holland, A. Wahner, H. Fuchs, H. Fuchs   +7 more
doaj   +1 more source

Melt regimes, internal stratigraphy, and flow dynamics of three glaciers in the Alaska Range [PDF]

, 2012
We used ground-penetrating radar (GPR), GPS and glaciochemistry to evaluate melt regimes and ice depths, important variables for mass-balance and ice-volume studies, of Upper Yentna Glacier, Upper Kahiltna Glacier and the Mount Hunter ice divide, Alaska.
Arcone, Steven, Campbell, Seth, Introne, Douglas, Kreutz, K, Osterberg, Erich, Volkening, Kevin, Wake, Cameron P, Winski, Dominic   +7 more
core   +2 more sources

The lapse rate and the cold point tropopause in the Asian Summer Monsoon anticyclone [PDF]

Atmospheric Chemistry and Physics
Tropospheric and stratospheric airmasses are separated by the tropopause. Here we investigate the lapse rate tropopause and the cold point tropopause in the Asian summer monsoon anticyclone (ASMA) based on high-altitude airborne measurements in summer ...
R. Müller, B. Vogel, M. Krämer, C. Rolf, N. Spelten, F. Ravegnani   +5 more
doaj   +1 more source