Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Andrew Shepherd"'
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
Autor:
Andrew Shepherd, Jamie T. Mullins
Publikováno v:
Environmental Pollution. 253:1030-1037
Objectives Evaluate the relationship between arthritis diagnosis in those over 50 and exposure to extreme air pollution in utero or infancy ( Methods Compare rates of arthritis diagnosis between groups that experienced differential air pollution expo
Autor:
Andrew Shepherd, Vidya Diwakar
Publikováno v:
World Development. 151:105611
The objectives of this research are to identify the difference between sustained and temporary poverty escapes for policy and program design, based on research in Bangladesh, Cambodia, Ethiopia, Kenya, Malawi, Nepal, Niger, the Philippines, Rwanda, T
Autor:
E. Maestroni, Michele Scagliola, Andrew Shepherd, Tania Casal, Tommaso Parrinello, Stefano Badessi, Malcolm Davidson, Marco Fornari, Jerome Bouffard
Publikováno v:
Advances in Space Research. 62:1178-1190
CryoSat-2 is a satellite of the European Space Agency that was launched in April 2010. It is intended to monitor changes in the thickness of the marine ice, floating in the polar oceans, and to measure variations in the thickness of the vast ice shee
Autor:
Andrew Shepherd, Alan Muir, Steven Baker, Albert Garcia-Mondejar, Luca Foresta, Monica Roca, Mark R. Drinkwater, Maria-José Escorihuela, Noel Gourmelen
Publikováno v:
Gourmelen, N, Escorihuela, M, Shepherd, A, Foresta, L, Muir, A, Garcia-Mondejar, A, Roca, M, Baker, S & Drinkwater, M R 2018, ' CryoSat-2 swath interferometric altimetry for mapping ice elevation and elevation change ', Advances in Space Research, vol. 62, no. 6, pp. 1226-1242 . https://doi.org/10.1016/j.asr.2017.11.014
For more than 25 years, satellite radar altimetry has provided continuous information on the state of the cryosphere and on its contribution to global sea-level rise. The technique typically delivers maps of ice-sheet elevation and elevation change w
Autor:
Noel Gourmelen, Michel Tsamados, Andrew Shepherd, Peter Nienow, Paul Tepes, Flora Weissgerber
Publikováno v:
Tepes, P, Gourmelen, N, Nienow, P, Tsamados, M, Shepherd, A & Weissgerber, F 2021, ' Changes in elevation and mass of Arctic glaciers and ice caps, 2010-2017 ', Remote Sensing of Environment, vol. 261, 112481 . https://doi.org/10.1016/j.rse.2021.112481
Arctic glaciers and ice caps (GIC) are losing mass rapidly, and this process is expected to continue during the 21st century owing to polar amplification of climate warming. Here, we use seven years of CryoSat-2 swath interferometric altimetry to tra
Autor:
Finnur Pálsson, Aud Venke Sundal, Noel Gourmelen, Sang-Wan Kim, Andrew Shepherd, Helgi Björnsson, J. Park
Publikováno v:
Gourmelen, N, Kim, S W, Shepherd, A, Park, J W, Sundal, A V, Björnsson, H & Pálsson, F 2011, ' Ice velocity determined using conventional and multiple-aperture InSAR ', Earth and Planetary Science Letters, vol. 307, no. 1-2, pp. 156-160 . https://doi.org/10.1016/j.epsl.2011.04.026
We combine conventional Interferometric Synthetic Aperture Radar (InSAR) and Multiple Aperture InSAR (MAI) to determine the ice surface velocity on the Langjokull and Hofsjokull ice caps in Iceland in 1994. This approach allows the velocity of the 20
Publikováno v:
Earth and Planetary Science Letters. 302:423-428
We use interferometric synthetic aperture radar observations recorded in a land-terminating sector of western Greenland to characterise the ice sheet surface hydrology and to quantify spatial variations in the seasonality of ice sheet flow. Our data
Publikováno v:
Earth and Planetary Science Letters. 262:484-492
A survey of supra-glacial lakes on the western margin of the Greenland Ice Sheet reveals a seasonally-driven hydrological system, culminating in widespread lake drainage in late summer. We used satellite imagery to study the evolution of 292 lakes ac