Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Stephen F. Ackley"'
Autor:
Mansi Joshi, Alberto M. Mestas-Nuñez, Stephen F. Ackley, Stefanie Arndt, Grant J. Macdonald, Christian Haas
Publikováno v:
Remote Sensing, Vol 16, Iss 20, p 3909 (2024)
The sea ice extent in the Weddell Sea exhibited a positive trend from the start of satellite observations in 1978 until 2016 but has shown a decreasing trend since then. This study analyzes seasonal and interannual variations in sea ice thickness usi
Externí odkaz:
https://doaj.org/article/19bdf073772a4de68685f268f7cb564b
Publikováno v:
Annals of Glaciology, Vol 61, Pp 369-378 (2020)
The widespread occurrence of snow-ice formation on the pack ice plays a critical role in the mass balance of Antarctic sea ice. The stable isotope composition, ice texture and salinity of eight ice cores, obtained from the Amundsen Sea during the Ode
Externí odkaz:
https://doaj.org/article/3a931fff1d3f448ba4479a4d4bce529a
Autor:
Liuxi Tian, Hongjie Xie, Stephen F. Ackley, Jiakui Tang, Alberto M. Mestas-Nuñez, Xianwei Wang
Publikováno v:
Annals of Glaciology, Vol 61, Pp 24-39 (2020)
NASA's Operation IceBridge mission flew over the Ross Sea, Antarctica (20 and 27 November 2013) and collected data with Airborne Topographic Mapper (ATM) and Digital Mapping System (DMS). Using the DMS and reflectivity of ATM L1B, leads are detected
Externí odkaz:
https://doaj.org/article/97e67fc1e9a6418ebc139d1f605b482a
Publikováno v:
Remote Sensing, Vol 13, Iss 16, p 3277 (2021)
NASA’s ICESat-2 has been providing sea ice freeboard measurements across the polar regions since October 2018. In spite of the outstanding spatial resolution and precision of ICESat-2, the spatial sparsity of the data can be a critical issue for se
Externí odkaz:
https://doaj.org/article/ede76dd26d0946d78579f1a928bbb2d1
Publikováno v:
Remote Sensing, Vol 12, Iss 22, p 3732 (2020)
The measurement of sea ice elevation above sea level or the “freeboard” depends upon an accurate retrieval of the local sea level. The local sea level has been previously retrieved from altimetry data alone by the lowest elevation method, where t
Externí odkaz:
https://doaj.org/article/94ea0f9c8dd346f3b4f28bb6fd5256a3
Autor:
Liuxi Tian, Hongjie Xie, Stephen F. Ackley, Kirsty J. Tinto, Robin E. Bell, Christopher J. Zappa, Yongli Gao, Alberto M. Mestas-Nuñez
Publikováno v:
Remote Sensing, Vol 12, Iss 14, p 2226 (2020)
As part of the Polynyas and Ice Production in the Ross Sea (PIPERS) project, the IcePod system onboard the LC-130 aircraft based at McMurdo Station was flown over the Ross Sea, Antarctica in November 2016 and 2017, with the purpose of repeating the s
Externí odkaz:
https://doaj.org/article/00983c87de95424a889aaf75af941730
Publikováno v:
Remote Sensing, Vol 12, Iss 9, p 1484 (2020)
High sea ice production (SIP) generates high-salinity water, thus, influencing the global thermohaline circulation. Estimation from passive microwave data and heat flux models have indicated that the Ross Ice Shelf polynya (RISP) may be the highest S
Externí odkaz:
https://doaj.org/article/6ca8577c7dcb474c8a8e10f6e53a33c5
Autor:
François Fripiat, Klaus M. Meiners, Martin Vancoppenolle, Stathys Papadimitriou, David N. Thomas, Stephen F. Ackley, Kevin R. Arrigo, Gauthier Carnat, Stefano Cozzi, Bruno Delille, Gerhard S. Dieckmann, Robert B. Dunbar, Agneta Fransson, Gerhard Kattner, Hilary Kennedy, Delphine Lannuzel, David R. Munro, Daiki Nomura, Janne-Markus Rintala, Véronique Schoemann, Jacqueline Stefels, Nadja Steiner, Jean-Louis Tison
Publikováno v:
Elementa: Science of the Anthropocene, Vol 5 (2017)
Antarctic pack ice is inhabited by a diverse and active microbial community reliant on nutrients for growth. Seeking patterns and overlooked processes, we performed a large-scale compilation of macro-nutrient data (hereafter termed nutrients) in Anta
Externí odkaz:
https://doaj.org/article/b24837a7f55b4e87a5683ca6f6ee4fd9
Autor:
Gauthier Carnat, Frédéric Brabant, Isabelle Dumont, Martin Vancoppenolle, Stephen F. Ackley, Chris Fritsen, Bruno Delille, Jean-Louis Tison
Publikováno v:
Elementa: Science of the Anthropocene (2016)
Abstract Temporal changes in the concentration profiles of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), and dimethylsulfoxide (DMSO) were measured in pack ice from the Bellingshausen Sea (Antarctica) during the winter-spring transition o
Externí odkaz:
https://doaj.org/article/751f6cb241534c5ca3b0dd32de06b06a
Polynyas are key sites of ice production during the winter and are important sites of biological activity and carbon sequestration during the summer. The Amundsen Sea Polynya (ASP) is the fourth largest Antarctic polynya, has recorded the highest pri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcabce30684dc3be0827c7b4fa3d2a8f
https://tc.copernicus.org/articles/17/457/2023/
https://tc.copernicus.org/articles/17/457/2023/
