Zobrazeno 1 - 10
of 5 614
pro vyhledávání: '"Greenland ice sheet"'
Autor:
Marie Bolander Jensen, Thomas Turpin-Jelfs, Martyn Tranter, Liane G. Benning, Alexandre M. Anesio
Publikováno v:
Frontiers in Geochemistry, Vol 2 (2024)
The glacier ice algae Ancylonema alaskanum and Ancylonema nordenskiöldii grow in harsh dynamic environments on bare ice surfaces. In these environments, they contribute to the continuous darkening of the ice surface, which in turn accelerates the ic
Externí odkaz:
https://doaj.org/article/da83dd786c284114bf8a8487d3aa8011
Publikováno v:
Geo-spatial Information Science, Vol 27, Iss 3, Pp 728-743 (2024)
Synectic Aperture Radar (SAR) backscatter coefficient is sensitive to glacier surface physical characteristic changes, including the states of melting and refreezing, but it is also sensitive to incidence angle variation. This study explores the capa
Externí odkaz:
https://doaj.org/article/f7218a1e19ea4caf84be046b1a973afe
Publikováno v:
Big Earth Data, Vol 8, Iss 2, Pp 231-248 (2024)
A decade-long pronounced increase in temperatures in the Arctic resulted in a global warming hotspot over the Greenland ice sheet (GrIS). Associated changes in the cryosphere were the consequence and led to a demand for monitoring glacier changes, wh
Externí odkaz:
https://doaj.org/article/91e0c78136724f49b8f486d6515b956d
Autor:
Shunan Feng, Adrien Wehrlé, Joseph Mitchell Cook, Alexandre Magno Anesio, Jason Eric Box, Liane G. Benning, Martyn Tranter
Publikováno v:
Science of Remote Sensing, Vol 9, Iss , Pp 100116- (2024)
The NASA MODIS MOD10A1 snow albedo product has enabled numerous glaciological applications. The temporal consistency of MODIS albedo is critical to obtaining reliable results from this 22-year time series. The orbit of Terra began to drift toward ear
Externí odkaz:
https://doaj.org/article/014a27004f6b4fa189315b2cc799f00c
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:
Yukihiko Onuma, Nozomu Takeuchi, Jun Uetake, Masashi Niwano, Sota Tanaka, Naoko Nagatsuka, Teruo Aoki
Publikováno v:
Journal of Glaciology, Vol 69, Pp 487-499 (2023)
Glacier phototroph blooms on the surfaces of ice sheets and glaciers cause albedo reduction, leading to increased melting rates. We observed seasonal changes in the abundance of phototrophs on the Qaanaaq Ice Cap in northwestern Greenland from June t
Externí odkaz:
https://doaj.org/article/d4d7b9a459084950983a8f150447a72c
Autor:
Shunan Feng, Joseph Mitchell Cook, Kathrin Naegeli, Alexandre Magno Anesio, Liane G. Benning, Martyn Tranter
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 1, Pp n/a-n/a (2024)
Abstract Dark (low albedo) surface ice on the Greenland Ice Sheet enhances melting and subsequent runoff, a major mass loss contributor during the ablation season. The accumulation of both biological (e.g., glacier ice algae) and abiotic (e.g., miner
Externí odkaz:
https://doaj.org/article/7bf93bf974ce4ac58eab01cc4fdace9c
Publikováno v:
Arctic, Antarctic, and Alpine Research, Vol 55, Iss 1 (2023)
Accelerated ice discharge from marine-terminating outlet glaciers accounted for ~48 percent of ice loss from Greenland between 1992 and 2018, and the northwest has been the largest source of dynamic ice loss. Here, we assess the dynamics of two neigh
Externí odkaz:
https://doaj.org/article/d78a38ce37034d66bc1c0d75bb610539
Autor:
Chudley, T. R.1,2 chudley.1@osu.edu, Christoffersen, P.1, Doyle, S. H.3, Dowling, T. P. F.4,5, Law, R.1, Schoonman, C. M.1,6, Bougamont, M.1, Hubbard, B.3
Publikováno v:
Journal of Geophysical Research. Earth Surface. Sep2021, Vol. 126 Issue 9, p1-18. 18p.
Publikováno v:
Remote Sensing, Vol 16, Iss 10, p 1673 (2024)
The occurrence of Supraglacial Lakes (SGLs) may influence the signals acquired with microwave radiometers, which may result in a degree of uncertainty when employing microwave radiometer data for the detection of surface melt. Accurate monitoring of
Externí odkaz:
https://doaj.org/article/d1c0167bb30d47f489ec727ab208c10b