Results 41 to 50 of about 531 (138)

Measurements and Analysis of Light Non‐Methane Hydrocarbon Mole Fractions in 1982–1987 at Six Remote Sites Along the Pacific Rim

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.
Abstract Atmospheric non‐methane hydrocarbons (NMHCs) are important trace species with anthropogenic and natural sources including fugitive emissions from fossil fuel mining and distribution, biomass burning, biofuel combustion, and biogenic emissions from microbes and plants.
A. M. Smith, C. L. Butenhoff, M. A. K. Khalil, A. L. Rice   +3 more
wiley   +1 more source

Revealing firn structure at Dome A region in East Antarctica using cultural seismic noise [PDF]

The Cryosphere
Antarctica is mostly covered by snow, firn, and glacier ice, and the transformation from snow to firn and glacier ice influences energy transfer and material transport in polar regions.
Z. Song, Z. Song, Y. Pan, Y. Pan, J. Li, J. Li, H. Peng, H. Peng, Y. Wang, Y. Wang, Y. Yang, Y. Yang, K. Lu, X. Tang, X. Tang, X. Zhang, X. Zhang, X. Zhang   +17 more
doaj   +1 more source

A synthetic study of acoustic full waveform inversion to improve seismic modelling of firn

Annals of Glaciology, 2022
The density structure of firn has implications for hydrological and climate modelling and for ice shelf stability. The firn structure can be evaluated from depth models of seismic velocity, widely obtained with Herglotz-Wiechert inversion (HWI), an ...
Emma Pearce, Adam D. Booth, Sebastian Rost, Paul Sava, Tuğrul Konuk, Alex Brisbourne, Bryn Hubbard, Ian Jones   +7 more
doaj   +1 more source

A Regional Intercomparison of Ice Sheet Mass Balance Estimates of the Northwest Greenland Ice Sheet

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Changes in ice sheet mass manifest as changes in ice flow, ice thickness, and gravitational attraction. These parameters can be measured from space and used to track Greenland's contribution to sea level rise independently from each other. While an excellent level of agreement between these satellite techniques has been demonstrated at the ice
Inès N. Otosaka, Andrew Shepherd, Andreas Groh, Thorben Döhne, Xavier Fettweis, Brice Noël   +5 more
wiley   +1 more source

Climatic and insolation control on the high-resolution total air content in the NGRIP ice core [PDF]

Climate of the Past, 2016
Because the total air content (TAC) of polar ice is directly affected by the atmospheric pressure and temperature, its record in polar ice cores was initially considered as a proxy for past ice sheet elevation changes. However, the Antarctic ice core TAC
O. Eicher, M. Baumgartner, A. Schilt, J. Schmitt, J. Schwander, T. F. Stocker, H. Fischer   +6 more
doaj   +1 more source

Hot water drilling in the firn layer of Greenland's percolation zone

Annals of Glaciology, 2021
The intermixed thermal and structural framework of cold firn, water-saturated firn and ice layers in Greenland's percolation zone can be challenging to penetrate with core drills.
Neil Humphrey, Joel Harper, Toby Meierbachtol   +2 more
doaj   +1 more source

A Causal Examination of the Solar Influence on Holocene Climate

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Variations in Total Solar Irradiance (TSI) have long been hypothesized to influence global mean surface temperature (GMST) on multidecadal to millennial timescales, but empirical evidence has remained elusive. Here, we explore the link between solar variability and climate over the pre‐industrial Holocene, when anthropogenic influences were ...
Jordan P. Landers, Julien Emile‐Geay, Alexander K. James, Stephan B. Munch, Deborah Khider, Edouard Bard   +5 more
wiley   +1 more source

Toward an Improved Understanding of the Antarctic Coastal Zone and Its Contribution to Future Global Sea Level

Reviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract Understanding the coastal zone of the Antarctic Ice Sheet (AIS), where it interacts with the Southern Ocean and warmer air masses, is crucial for predicting Antarctica's influence on the global climate and sea level. This region has multiple tipping mechanisms that could trigger large, rapid, and potentially irreversible changes in the AIS ...
Kenichi Matsuoka, Geir Moholdt, Jennifer F. Arthur, Julien A. Bodart, Xiangbin Cui, Fausto Ferraccioli, René Forsberg, Vikram Goel, Tom A. Jordan, Felicity S. McCormack, Ruth Mottram, Hamish D. Pritchard, Calvin Shackleton, Kirsty J. Tinto, Fredrik Boberg, Marie G. P. Cavitte, Reinhard Drews, Pierre Dutrieux, Jörg Ebbing, Olaf Eisen, Hannes Eisermann, Alex S. Gardner, Chad A. Greene, Nicholas Holschuh, Stewart S. R. Jamieson, Byeong‐Hoon Kim, Naomi Krauzig, Bernd Kulessa, Carlton Leuschen, Jilu Li, Lu Li, Jonas Liebsch, Joseph A. MacGregor, Emma MacKie, Anirudha Mahagaonkar, Joséphine Maton, Mathieu Morlighem, Francisco Navarro, Peter D. Neff, Inès N. Otosaka, Frank Pattyn, Antonia Ruppel, Rebecca J. Sanderson, Hélène Seroussi, Andrew Shepherd, Matthew R. Siegfried, Thomas Slater, Arjen P. Stroeven, Michael Studinger, Thomas Teisberg, Ryan A. Venturelli, Jeremy P. Winberry, Chen Zhao, Lu An, Jonathan L. Bamber, Robin E. Bell, Robert G. Bingham, Johanna Brehmer‐Moltmann, Graeme Eagles, Jamin Greenbaum, Jorn Gronset, Won Sang Lee, Emmanuel Le Meur, Lenneke M. Jong, Katrin Lindbäck, Sven Lidström, Mareen Lösing, Masahiro Minowa, Mayuri Pandey, Yogesh Ray, Mirko Scheinert, Dustin M. Schroeder, Thorsten Seehaus, Kaian Shahateet, Daniel Steinhage, Xueyuan Tang, Drew Taylor, Hannah Verboncoeur, Junjun Yang, Duncan A. Young   +79 more
wiley   +1 more source

Air reverse circulation at the hole bottom in ice-core drilling

Journal of Glaciology, 2019
Ice-core drilling to depths of 200–300 m is an important part of research studies concerned with paleoclimate reconstruction and anthropogenic climate change. However, conventional drilling methods face difficulties due to firn permeability.
ZHENGYI HU, PAVEL TALALAY, ZHICHUAN ZHENG, PINLU CAO, GUITAO SHI, YUANSHENG LI, XIAOPENG FAN, HONGMEI MA   +7 more
doaj   +1 more source

Climate Models Accurately Predict Ocean‐Going Meltwater Runoff From the Northwest Greenland Ice Sheet

Water Resources Research, Volume 62, Issue 9, September 2026.
Abstract Climatic surface mass balance (SMB) meltwater runoff models are used to estimate current and future Greenland Ice Sheet sea level contributions. However, comparisons between SMB model runoff and in situ proglacial river discharge observations show large discrepancies.
S. E. Esenther, L. C. Smith, A. Lewinter, C. Onclin, A. L. Boghosian, Å. K. Rennermalm, D. Petersen, L. C. Andrews   +7 more
wiley   +1 more source