Results 91 to 100 of about 7,958 (231)

Carbon Isotope Constraints on the Deglacial CO2 Rise from Ice Cores [PDF]

, 2012
The stable carbon isotope ratio of atmospheric CO2 (d13Catm) is a key parameter in deciphering past carbon cycle changes. Here we present d13Catm data for the past 24,000 years derived from three independent records from two Antarctic ice cores.
Chappellaz, J., Elsig, J., Fischer, Hubertus, Joos, F., Köhler, P., Leuenberger, D., Leuenberger, M., Lourantou, A., Schmitt, Jochen, Schneider, R., Stocker, T. F.   +10 more
core   +1 more source

Titan's Plains Revealed: Evidence for a Layered Surface

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Undifferentiated plains are the most common terrain type on Titan, yet their composition and geologic history remain poorly understood. To better characterize their physical properties, we combined Cassini RADAR measurements from nadir altimetry and side‐looking SAR modes. We analyzed these data using radar backscatter models, finding that the
A. Fine, V. Poggiali, D. Lalich, A. Hayes   +3 more
wiley   +1 more source

Characteristics of modern atmospheric dust deposition in snow on the Penny Ice Cap, Baffin Island, Arctic Canada [PDF]

, 1998
We evaluated the concentration, size and distribution of insoluble dust microparticles in snowpits on the Penny Ice Cap (PIC), Baffin Island, to define (1) the characteristics of modern atmospheric dust deposition at the site, (2) the relative ...
Wake, Cameron P, Zdanowicz, Christian, Zielinski, Gregory A   +2 more
core   +2 more sources

Subglacial Topography of Coats Land Records Post‐Gondwanan Landscape Evolution and Early Ice‐Sheet Behavior in East Antarctica

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract The East Antarctic Ice Sheet (EAIS) formed circa 34 million years ago and now contains an ice volume equivalent to ∼52 m of global sea‐level rise. Although the EAIS is approximately in balance today, there is substantial uncertainty regarding the sensitivity of sectors underlain by low‐lying bed topography to future climate and ocean warming ...
Guy J. G. Paxman, Tom A. Jordan, Michael J. Bentley, David Small, Stewart S. R. Jamieson, Daniel Steinhage   +5 more
wiley   +1 more source

Relationships between synoptic-scale transport and interannual variability of inorganic cations in surface snow at Summit, Greenland: 1992-1996 [PDF]

, 2001
To fully utilize the long-term chemical records retrieved from central Greenland ice cores, specific relationships between atmospheric circulation and the variability of chemical species in the records need to be better understood. This research examines
Dibb, Jack E., Kahl, D W, Keim, Barry D, Slater, J F   +3 more
core   +1 more source

Increased Glacier Melt Across Millennia to Hours Enhances Erosion and Sediment Export Processes

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract Glacial erosion and sediment evacuation are key in shaping polar and mountain landscapes and influencing downstream ecological and social systems. The glacier dynamics and hydrology responsible for these processes are closely linked to hydrological and climatic (hydro‐climatic) conditions.
Ian Delaney, Audrey Margirier, Marjolein Gevers, Matt Jenkin, Tancrède Leger, Ivan Vergara, Julien Seguinot, Guillaume Jouvet, Alan Robert Alexander Aitken, Stuart Lane, Frédéric Herman, Georgina E. King   +11 more
wiley   +1 more source

Constraining the Stratospheric Sulfate Budget in Global Models: Insights From In Situ OCS Measurements During 2023 SABRE and Comparison With Satellite, Balloon and Surface Data

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract In situ carbonyl sulfide (OCS) measurements from the Stratospheric Aerosol processes, Budget and Radiative Effects (SABRE) 2023 airborne campaign are used to evaluate the sulfate budget in the Arctic stratosphere during boreal winter. The strong correspondence between these measurements and remote retrievals from the Atmospheric Chemistry ...
Colin Gurganus, Ewa M. Bednarz, Andrew Rollins, Eleanor Waxman, Eric Ray, Eric Hintsa, Fred Moore, David Nance, Brad Hall, Stephen A. Montzka, Isaac Vimont, Joshua P. Schwarz, Samantha DeLone, Steve Ciciora, Sophie Abou‐Rizk, Jun Zhang, Troy Thornberry   +16 more
wiley   +1 more source

Snow accumulation, surface height change, and firn densification at Summit, Greenland: Insights from 2 years of in situ observation [PDF]

, 2004
Weekly measurements of surface height change were made at an accumulation forest of 100 stakes at Summit, Greenland, over a 2-year period (17 August 2000 to 8 August 2002).
Dibb, Jack E., Fahnestock, Mark
core   +2 more sources

Unexpectedly High Accumulation Rates in the 2022 Mt. Logan Ice Core Reveal Warm‐Season Drivers of Precipitation Variability

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.
Abstract Ice cores from Mt. Logan, the second highest peak in North America located in the St. Elias mountains in southwest Yukon, Canada, have provided conflicting accumulation records, thus the hydroclimate response to changing atmospheric conditions in the highest elevation regions is not well constrained.
Kira M. Holland, Alison S. Criscitiello, Joseph R. McConnell, Bradley R. Markle, Hanaa A. K. Yousif, Emma Skelton, Sophia M. Wensman, Britta J. L. Jensen, Dominic A. Winski, Seth W. Campbell, Nathan J. Chellman   +10 more
wiley   +1 more source

Altimetry, gravimetry, GPS and viscoelastic modeling data for the joint inversion for glacial isostatic adjustment in Antarctica (ESA STSE Project REGINA) [PDF]

, 2018
The poorly known correction for the ongoing deformation of the solid Earth caused by glacial isostatic adjustment (GIA) is a major uncertainty in determining the mass balance of the Antarctic ice sheet from measurements of satellite gravimetry and to a ...
A. Horvath, A. Martín-Español, B. Wouters, E. J. Petrie, H. Konrad, H. Konrad, I. Sasgen, J. L. Bamber, M. Horwath, M. R. Drinkwater, P. J. Clarke, R. Pail, T. Wilson, V. Klemann   +13 more
core   +4 more sources