Results 31 to 40 of about 5,289,640 (239)

Reconstruction of historical surface mass balance, 1984–2017 from GreenTrACS multi-offset ground-penetrating radar

Journal of Glaciology, 2021
We present continuous estimates of snow and firn density, layer depth and accumulation from a multi-channel, multi-offset, ground-penetrating radar traverse.
Tate G. Meehan, H. P. Marshall, John H. Bradford, Robert L. Hawley, Thomas B. Overly, Gabriel Lewis, Karina Graeter, Erich Osterberg, Forrest McCarthy   +8 more
doaj   +1 more source

Estimating Greenland surface melt is hampered by melt induced dampening of temperature variability

Journal of Glaciology, 2018
The positive degree-day (PDD) model provides a particularly simple approach to estimate surface melt from land ice based solely on air temperature. Here, we use a climate and snow pack simulation of the Greenland ice sheet (Modèle Atmosphérique Régional,
UTA KREBS-KANZOW, PAUL GIERZ, GERRIT LOHMANN   +2 more
doaj   +1 more source

A minimal model for reconstructing interannual mass balance variability of glaciers in the European Alps [PDF]

The Cryosphere, 2012
We present a minimal model of the glacier surface mass balance. The model relies solely on monthly precipitation and air temperatures as forcing. We first train the model individually for 15 glaciers with existing mass balance measurements.
B. Marzeion, M. Hofer, A. H. Jarosch, G. Kaser, T. Mölg   +4 more
doaj   +1 more source

Mass balance of Trambau Glacier, Rolwaling region, Nepal Himalaya: in-situ observations, long-term reconstruction and mass-balance sensitivity

Journal of Glaciology, 2019
We conducted a mass-balance study of debris-free Trambau Glacier in the Rolwaling region, Nepal Himalaya, which is accessible to 6000 m a.s.l., to better understand mass-balance processes and the effect of precipitation on these processes on high ...
SOJIRO SUNAKO, KOJI FUJITA, AKIKO SAKAI, RIJAN B. KAYASTHA   +3 more
doaj   +1 more source

Reconstructing the mass balance of Brewster Glacier, New Zealand, using MODIS-derived glacier-wide albedo [PDF]

The Cryosphere, 2016
In New Zealand, direct measurements of mass balance are sparse due to the inaccessibility of glaciers in the Southern Alps and the logistical difficulties associated with maintaining a mass balance record.
P. Sirguey, H. Still, N. J. Cullen, M. Dumont, Y. Arnaud, J. P. Conway   +5 more
doaj   +1 more source

Surface mass balance modelling of the Juneau Icefield highlights the potential for rapid ice loss by the mid-21st century

Journal of Glaciology
Plateau icefields are large stores of fresh water, preconditioned to enhanced mass loss due to their gently sloping accumulation areas. Accurate modelling of their mass balance is therefore crucial for sea-level rise projections. Here, we use the COupled
Ryan Nicholas Ing, Jeremy Charles Ely, Julie Margaret Jones, Bethan Joan Davies   +3 more
doaj   +1 more source

An 11-year record of mass balance of Brewster Glacier, New Zealand, determined using a geostatistical approach

Journal of Glaciology, 2017
Recognising the scarcity of glacier mass-balance data in the Southern Hemisphere, a mass-balance measurement programme was started at Brewster Glacier in the Southern Alps of New Zealand in 2004.
NICOLAS J. CULLEN, BRIAN ANDERSON, PASCAL SIRGUEY, DOROTHEA STUMM, ANDREW MACKINTOSH, JONATHAN P. CONWAY, HUW J. HORGAN, RUZICA DADIC, SEAN J. FITZSIMONS, ANDREW LORREY   +9 more
doaj   +1 more source

Reconstruction of Past Glacier Changes with an Ice-Flow Glacier Model: Proof of Concept and Validation

Frontiers in Earth Science, 2021
Estimations of global glacier mass changes over the course of the 20th century require automated initialization methods, allowing the reconstruction of past glacier states from limited information. In a previous study, we developed a method to initialize
Julia Eis, Larissa van der Laan, Fabien Maussion, Ben Marzeion, Ben Marzeion   +4 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source