Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Andrew Shepherd"'
Autor:
Andreas Groh, Martin Horwath, Alexander Horvath, Rakia Meister, Louise Sandberg Sørensen, Valentina R. Barletta, René Forsberg, Bert Wouters, Pavel Ditmar, Jiangjun Ran, Roland Klees, Xiaoli Su, Kun Shang, Junyi Guo, C. K. Shum, Ernst Schrama, Andrew Shepherd
Publikováno v:
Geosciences, Vol 9, Iss 10, p 415 (2019)
Satellite gravimetry data acquired by the Gravity Recovery and Climate Experiment (GRACE) allows to derive the temporal evolution in ice mass for both the Antarctic Ice Sheet (AIS) and the Greenland Ice Sheet (GIS). Various algorithms have been used
Externí odkaz:
https://doaj.org/article/f9fb39d2d47d4e1ea19e3e29a0e0a350
Publikováno v:
The Cryosphere, Vol 15, Pp 3861-3876 (2021)
Icebergs account for half of all ice loss from Antarctica and, once released, present a hazard to maritime operations. Their melting leads to a redistribution of cold fresh water around the Southern Ocean which, in turn, influences water circulation,
Autor:
Alan Muir, Julienne Stroeve, Thomas W. K. Armitage, Isobel Lawrence, Michel Tsamados, Andrew Shepherd, Andy Ridout, Salvatore Dinardo, R. Tilling
Publikováno v:
Advances in Space Research. 68:711-723
In February 2016 and April 2018 the European Space Agency launched the Sentinel-3A and 3B satellites respectively, as part of the European Commission’s multi-satellite Copernicus Programme. Here we process Sentinel-3A waveform data to estimate Arct
Publikováno v:
Advances in Space Research. 68:724-731
Over the past two decades, Antarctic ice shelves have retreated, thinned and suffered catastrophic collapse. In this study we extended the 25-year long record of ice shelf thickness change in Antarctica, from 2010 to 2017. In the Amundsen Sea Sector
Icebergs impact the physical and biological properties of the ocean along their drift trajectory by releasing cold fresh meltwater and nutrients. This facilitates sea ice formation, fosters biological production and influences the local ocean circula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d04f810b7ec2099b6fbd7754213397b0
https://www.sciencedirect.com/science/article/pii/S0034425721005757
https://www.sciencedirect.com/science/article/pii/S0034425721005757
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:
Noel Gourmelen, Andrew Shepherd, Maria Jose Escorihuela, S. Plummer, Albert Garcia-Mondejar, Monica Roca
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 16:1839-1843
Swath mode processing of CryoSat-2 Synthetic Aperture Radar Interferometric (SARIn) mode has been used to monitor elevation of areas with complex topography such as over ice sheet and ice cap margins. Swath processing relies on an accurate measure of
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
Autor:
Andy Ridout, Andrew Shepherd, Kaitlin Hill, Lettie A. Roach, Colin T. Guider, R. Tilling, Christopher Horvat, Cecilia M. Bitz, Baylor Fox-Kemper
Publikováno v:
The Cryosphere, Vol 13, Pp 2869-2885 (2019)
In sea-ice-covered areas, the sea ice floe size distribution (FSD) plays an important role in many processes affecting the coupled sea-ice-ocean-atmosphere system. Observations of the FSD are spare – traditionally taken via a pain-staking analysis
Publikováno v:
Journal of Geophysical Research: Oceans. 124:7473-7485