Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Andrew Shepherd"'
Autor:
Isobel R. Lawrence, Noel Gourmelen, Paul Tepes, Peter Nienow, Livia Jakob, Ines Otosaka, Andrew Shepherd, Thomas Slater, Lin Gilbert
Publikováno v:
The Cryosphere, Vol 15, Pp 233-246 (2021)
Slater, T, Lawrence, I R, Otosaka, I N, Shepherd, A, Gourmelen, N, Jakob, L, Tepes, P, Gilbert, L & Nienow, P 2021, ' Review Article: Earth’s ice imbalance ', Cryosphere . https://doi.org/10.5194/tc-15-233-2021
Slater, T, Lawrence, I R, Otosaka, I N, Shepherd, A, Gourmelen, N, Jakob, L, Tepes, P, Gilbert, L & Nienow, P 2021, ' Review Article: Earth’s ice imbalance ', Cryosphere . https://doi.org/10.5194/tc-15-233-2021
We combine satellite observations and numerical models to show that Earth lost 28 trillion tonnes of ice between 1994 and 2017. Arctic sea ice (7.6 trillion tonnes), Antarctic ice shelves (6.5 trillion tonnes), mountain glaciers (6.1 trillion tonnes)
Autor:
Ines Otosaka, Thomas W. K. Armitage, Andrew Shepherd, Robert J. Arthern, Thomas Slater, Malcolm McMillan
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 57:9633-9642
Changes in firn properties affect the shape of pulse-limited radar altimeter echoes acquired over the polar ice sheets. We apply a waveform deconvolution model to CryoSat-2 low-resolution mode echoes to determine the depth distribution of radar backs
About a third of Greenland’s total ice losses come from the Northwest sector, a sector that includes a large number of marine-terminating outlet glaciers, which have all experienced widespread retreat triggered by ocean-induced melting. Here, we de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5200884cca6777c6ce066e44ea48b06
https://doi.org/10.5194/egusphere-egu21-2480
https://doi.org/10.5194/egusphere-egu21-2480
Seasonal changes in the elevation of the Greenland Ice Sheet below the equilibrium line altitude are driven by ice dynamics and fluctuations in surface melting and snowfall accumulation. Here, we use CryoSat-2 altimetry to estimate summer and winter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03dcd11b9ecb2391b5ff155ffb92f98d
https://doi.org/10.5194/egusphere-egu2020-13288
https://doi.org/10.5194/egusphere-egu2020-13288
Publikováno v:
Remote Sensing, Vol 10, Iss 12, p 1878 (2018)
Remote Sensing; Volume 10; Issue 12; Pages: 1878
Remote Sensing; Volume 10; Issue 12; Pages: 1878
Land-terminating sectors of the Greenland ice sheet flow faster in summer after surface meltwater reaches the subglacial drainage system. Speedup occurs when the subglacial drainage system becomes saturated, leading to a reduction in the effective pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::781fa2fbf4847bca0d4d616411ddbb39
https://eprints.whiterose.ac.uk/139243/1/remotesensing-10-01878.pdf
https://eprints.whiterose.ac.uk/139243/1/remotesensing-10-01878.pdf
Autor:
Brice Noël, Alan Muir, Stefan R. M. Ligtenberg, Lin Gilbert, Malcolm McMillan, Andreas Groh, Anna E. Hogg, Peter Kuipers Munneke, Kate Briggs, Andrew Shepherd, Amber Leeson, Michiel R. van den Broeke, Thomas W. K. Armitage, Willem Jan van de Berg, Martin Horwath
Publikováno v:
Geophysical Research Letters. 43:7002-7010
We map recent Greenland Ice Sheet elevation change at high spatial (5 km) and temporal (monthly) resolution using CryoSat-2 altimetry. After correcting for the impact of changing snowpack properties associated with unprecedented surface melting in 20
Autor:
Roderik S. W. van de Wal, Joseph H. Kennedy, Andy Aschwanden, Sophie Nowicki, Tamsin L. Edwards, Reinhard Calov, Jonathan M. Gregory, Ralf Greve, Helene Seroussi, Heiko Goelzer, Eric Larour, Andrew Shepherd, Nicholas R. Golledge, Angelika Humbert, Frank Pattyn, Sainan Sun, Martin Rückamp, Philippe Huybrechts, Ayako Abe-Ouchi, Florian Ziemen, Victoria Lee, Nicole Schlegel, Matthew Beckley, Fuyuki Saito, Antony J. Payne, William H. Lipscomb, Olivier Gagliardini, Fabien Gillet-Chaulet, Mathieu Morlighem, Sébastien Le clec'h, Christian Rodehacke
Publikováno v:
The Cryosphere
The Cryosphere, Copernicus 2018, 12 (4), pp.1433-1460. 〈10.5194/tc-12-1433-2018〉
The cryosphere, vol 12, iss 4
Cryosphere
The Cryosphere, Copernicus 2018, 12 (4), pp.1433-1460. ⟨10.5194/tc-12-1433-2018⟩
The Cryosphere, 2018, 12 (4), pp.1433-1460. ⟨10.5194/tc-12-1433-2018⟩
The Cryosphere, 12 (4). pp. 1433-1460.
The Cryosphere, Copernicus 2018, 12 (4), pp.1433-1460. 〈10.5194/tc-12-1433-2018〉
The cryosphere, vol 12, iss 4
Cryosphere
The Cryosphere, Copernicus 2018, 12 (4), pp.1433-1460. ⟨10.5194/tc-12-1433-2018⟩
The Cryosphere, 2018, 12 (4), pp.1433-1460. ⟨10.5194/tc-12-1433-2018⟩
The Cryosphere, 12 (4). pp. 1433-1460.
Earlier large-scale Greenland ice sheet sea-level projections (e.g. those run during the ice2sea and SeaRISE initiatives) have shown that ice sheet initial conditions have a large effect on the projections and give rise to important uncertainties. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2faa67fb28320f3da2e03fff471f671c
https://hal.archives-ouvertes.fr/hal-01806753
https://hal.archives-ouvertes.fr/hal-01806753
Autor:
Roderik Lindenbergh, K. Khvorostovsky, Francesca Ticconi, René Forsberg, Alan Muir, Thomas Flament, Nadege Pie, R. T. W. L. Hurkmans, Brian Gunter, Andrew Shepherd, Joanna Fredenslund Levinsen, Marcel Kleinherenbrink, Geir Moholdt, Louise Sandberg Sørensen, Denis Felikson
Publikováno v:
International Journal of Remote Sensing. 36:551-573
For more than two decades, radar altimetry missions have provided continuous elevation estimates of the Greenland ice sheet (GrIS). Here, we propose a method for using such data to estimate ice-sheet-wide surface elevation changes (SECs). The final d
Autor:
Ian M. Howat, Eric Rignot, Amber Leeson, Mathieu Morlighem, Kate Briggs, Xavier Fettweis, Andrew Shepherd
Publikováno v:
Nature Climate Change. 5:51-55
Supraglacial lakes (SGLs) form annually on the Greenland ice sheet and, when they drain, their discharge enhances ice-sheet flow by lubricating the base and potentially by warming the ice. Today, SGLs tend to form within the ablation zone, where enha
Publikováno v:
Hogg, A, Shepherd, A, Gourmelen, N & Engdahl, M 2016, ' Grounding line migration from 1992 to 2011 on Petermann Glacier, North-West Greenland ', Journal of Glaciology . https://doi.org/10.1017/jog.2016.83
We use satellite radar interferometry to investigate changes in the location of the Petermann Glacier grounding line between 1992 and 2011. The grounding line location was identified in 17 quadruple-difference interferograms produced from European Re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b05e977467fcb2ae385cadedfca4ade
https://eprints.whiterose.ac.uk/109695/1/div-class-title-grounding-line-migration-from-1992-to-2011-on-petermann-glacier-north-west-greenland-div.pdf
https://eprints.whiterose.ac.uk/109695/1/div-class-title-grounding-line-migration-from-1992-to-2011-on-petermann-glacier-north-west-greenland-div.pdf