Zobrazeno 1 - 10
of 169
pro vyhledávání: '"T, Colgan"'
Autor:
B. Vandecrux, J. E. Box, A. P. Ahlstrøm, S. B. Andersen, N. Bayou, W. T. Colgan, N. J. Cullen, R. S. Fausto, D. Haas-Artho, A. Heilig, D. A. Houtz, P. How, I. Iosifescu Enescu, N. B. Karlsson, R. Kurup Buchholz, K. D. Mankoff, D. McGrath, N. P. Molotch, B. Perren, M. K. Revheim, A. Rutishauser, K. Sampson, M. Schneebeli, S. Starkweather, S. Steffen, J. Weber, P. J. Wright, H. J. Zwally, K. Steffen
Publikováno v:
Earth System Science Data, Vol 15, Pp 5467-5489 (2023)
The Greenland Climate Network (GC-Net) consists of 31 automatic weather stations (AWSs) at 30 sites across the Greenland Ice Sheet. The first site was initiated in 1990, and the project has operated almost continuously since 1995 under the leadership
Externí odkaz:
https://doaj.org/article/e40bde48ae4c42ada0add0b101a19ca8
Autor:
Joseph A. MacGregor, William T. Colgan, Guy J. G. Paxman, Kirsty J. Tinto, Beáta Csathó, Fiona A. Darbyshire, Mark A. Fahnestock, Thomas F. Kokfelt, Emma J. MacKie, Mathieu Morlighem, Olga V. Sergienko
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 8, Pp n/a-n/a (2024)
Abstract Present understanding of Greenland's subglacial geology is derived mostly from interpolation of geologic mapping of its ice‐free margins and unconstrained by geophysical data. Here we refine the extent of its geologic provinces by synthesi
Externí odkaz:
https://doaj.org/article/0d0ae058cfb746cdb950664ec357768e
Autor:
A. Løkkegaard, K. D. Mankoff, C. Zdanowicz, G. D. Clow, M. P. Lüthi, S. H. Doyle, H. H. Thomsen, D. Fisher, J. Harper, A. Aschwanden, B. M. Vinther, D. Dahl-Jensen, H. Zekollari, T. Meierbachtol, I. McDowell, N. Humphrey, A. Solgaard, N. B. Karlsson, S. A. Khan, B. Hills, R. Law, B. Hubbard, P. Christoffersen, M. Jacquemart, J. Seguinot, R. S. Fausto, W. T. Colgan
Publikováno v:
The Cryosphere, Vol 17, Pp 3829-3845 (2023)
Here, we present a compilation of 95 ice temperature profiles from 85 boreholes from the Greenland ice sheet and peripheral ice caps, as well as local ice caps in the Canadian Arctic. Profiles from only 31 boreholes (36 %) were previously available i
Externí odkaz:
https://doaj.org/article/1dd96eeac3344d69a9340ab907bdc9af
Autor:
J. A. MacGregor, W. Chu, W. T. Colgan, M. A. Fahnestock, D. Felikson, N. B. Karlsson, S. M. J. Nowicki, M. Studinger
Publikováno v:
The Cryosphere, Vol 16, Pp 3033-3049 (2022)
The basal thermal state (frozen or thawed) of the Greenland Ice Sheet is under-constrained due to few direct measurements, yet knowledge of this state is becoming increasingly important to interpret modern changes in ice flow. The first synthesis of
Externí odkaz:
https://doaj.org/article/bbd9306ddd004f42ab589bf09fc6579c
Autor:
Nanna B. Karlsson, Anne M. Solgaard, Kenneth D. Mankoff, Fabien Gillet-Chaulet, Joseph A. MacGregor, Jason E. Box, Michele Citterio, William T. Colgan, Signe H. Larsen, Kristian K. Kjeldsen, Niels J. Korsgaard, Douglas I. Benn, Ian J. Hewitt, Robert S. Fausto
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Melting at the base of the Greenland Ice Sheet is often disregarded as a source of quantifiable mass loss. In this study, the authors find the basal mass loss is equivalent to 8% of the ice sheet’s present imbalance, and that the loss of mass from
Externí odkaz:
https://doaj.org/article/82d1dd641a264fc68729582276cdbe59
Autor:
Joseph A. MacGregor, Mark A. Fahnestock, William T. Colgan, Nicolaj K. Larsen, Kristian K. Kjeldsen, Jeffrey M. Welker
Publikováno v:
Journal of Glaciology, Vol 66, Pp 667-684 (2020)
Each summer, surface melting of the margin of the Greenland Ice Sheet exposes a distinctive visible stratigraphy that is related to past variability in subaerial dust deposition across the accumulation zone and subsequent ice flow toward the margin.
Externí odkaz:
https://doaj.org/article/5544cfd255914d13a915138d18febefb
Autor:
B. Vandecrux, M. MacFerrin, H. Machguth, W. T. Colgan, D. van As, A. Heilig, C. M. Stevens, C. Charalampidis, R. S. Fausto, E. M. Morris, E. Mosley-Thompson, L. Koenig, L. N. Montgomery, C. Miège, S. B. Simonsen, T. Ingeman-Nielsen, J. E. Box
Publikováno v:
The Cryosphere, Vol 13, Pp 845-859 (2019)
A porous layer of multi-year snow known as firn covers the Greenland-ice-sheet interior. The firn layer buffers the ice-sheet contribution to sea-level rise by retaining a fraction of summer melt as liquid water and refrozen ice. In this study we qua
Externí odkaz:
https://doaj.org/article/eb4b8959b0aa4486b514832fee75a5f8
Publikováno v:
AAPS Open, Vol 3, Iss 1, Pp 1-10 (2017)
Abstract There has been significant growth in the use of modeling tools to accelerate development and enhance pharmaceutical quality. Among these are empirical and semi-empirical modeling of accelerated stability studies which can be used to predict
Externí odkaz:
https://doaj.org/article/96927c0f60924cf79d9d0d8faccf22fb
Autor:
M. A. Taylor, M. A. Bradford, W. Arnold, D. Takahashi, T. Colgan, V. Davis, D. Losos, J. Peccia, P. A. Raymond
Publikováno v:
Journal of Geophysical Research: Biogeosciences. 128
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47f2f2dfa98cdf4766b178ea0a3d9ce0
https://doi.org/10.1029/2022jg007271
https://doi.org/10.1029/2022jg007271
Autor:
Charalampos Charalampidis, Dirk Van As, William T. Colgan, Robert S. Fausto, Michael Macferrin, Horst Machguth
Publikováno v:
Annals of Glaciology, Vol 57, Pp 1-10 (2016)
We present in situ firn temperatures from the extreme 2012 melt season in the southwestern lower accumulation area of the Greenland ice sheet. The upper 2.5 m of snow and firn was temperate during the melt season, when vertical meltwater percolation
Externí odkaz:
https://doaj.org/article/a7dd5d0fab7840199a3c6c6c20864c13