Results 21 to 30 of about 14,771 (237)

Data-Driven Calibration Algorithm and Pre-Launch Performance Simulations for the SWOT Mission

Remote Sensing, 2022
The Surface Water and Ocean Topography (SWOT) mission will be affected by various sources of systematic errors, which are correlated in space and in time. Their amplitude before calibration might be as large as tens of centimeters, i.e., able to dominate
Gérald Dibarboure, Clément Ubelmann, Benjamin Flamant, Frédéric Briol, Eva Peral, Geoffroy Bracher, Oscar Vergara, Yannice Faugère, François Soulat, Nicolas Picot   +9 more
doaj   +1 more source

Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel [PDF]

, 2013
From 1994 to 2011, instruments measuring ocean currents (Acoustic Doppler Current Profilers; ADCPs) have been moored on a section crossing the Faroe–Shetland Channel.
K. M. Larsen, B. Berx, S. Østerhus, Larsen, K. M., Berx, Barbara, Osterhus, S., Hansen, Bogi, Jochumsen, K., Sherwin, Toby, B. Hansen, Larsen, Karin Margretha, Berx, B., T. Sherwin, Hansen, B., Østerhus, Svein, K. Jochumsen, Jochumsen, Kerstin, Sherwin, T.   +17 more
core   +1 more source

Sentinel-3A SRAL Global Statistical Assessment and Cross-Calibration with Jason-3

Remote Sensing, 2019
The Sentinel-3A satellite, equipped with Synthetic Aperture Radar (SAR) Altimeter (SRAL) instrument to derive sea surface height, significant wave height and surface wind speed over the global ocean, was launched on 16 February 2016.
Jungang Yang, Jie Zhang, Changying Wang
doaj   +1 more source

Evaluating the Retreat, Arrest, and Regrowth of Crane Glacier Against Marine Ice Cliff Process Models

Geophysical Research Letters, 2023
The fastest projected rates of sea level rise appear in models which include “the marine ice cliff instability (MICI),” a hypothesized but mostly unobserved process defined by rapid fracture and wastage of terminal ice cliffs that outpaces viscous ...
C. Needell, N. Holschuh
doaj   +1 more source

Validation of airborne and satellite altimetry data by Arctic Trucks citizen science

GEUS Bulletin, 2021
The elevation of ice sheets changes due to climate change, and satellite altimetry is the preferred tool for measuring ice sheet-wide height changes. In situ validation is needed to ensure the quality of the observed elevation changes, but the cost often
Andreas Stokholm, Sine M. Hvidegaard, Rene Forsberg, Sebastian B. Simonsen   +3 more
doaj   +1 more source

Satellite mapping of the Antarctic gravity field

Annals of Geophysics, 1999
The production and analysis of the Antarctic digital magnetic anomaly map will be greatly aided by complementary gravity data. They help to constrain thickness variations of the crust and related magnetic effects that may be used for correcting long ...
J. W. Kim, A. J. Anderson, J. H. Kim, D. R. Roman, R. R. B. von Frese   +4 more
doaj   +1 more source

Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry

Geophysical Research Letters, 2023
Snow depth on sea ice is an Essential Climate Variable and a major source of uncertainty in satellite altimetry‐derived sea ice thickness. During winter of the MOSAiC Expedition, the “KuKa” dual‐frequency, fully polarized Ku‐ and Ka‐band radar was ...
Rosemary Willatt, Julienne C. Stroeve, Vishnu Nandan, Thomas Newman, Robbie Mallett, Stefan Hendricks, Robert Ricker, James Mead, Polona Itkin, Rasmus Tonboe, David N. Wagner, Gunnar Spreen, Glen Liston, Martin Schneebeli, Daniela Krampe, Michel Tsamados, Oguz Demir, Jeremy Wilkinson, Matthias Jaggi, Lu Zhou, Marcus Huntemann, Ian A. Raphael, Arttu Jutila, Marc Oggier   +23 more
doaj   +1 more source

CryoSat Long-Term Ocean Data Analysis and Validation: Final Words on GOP Baseline-C

Remote Sensing, 2023
ESA’s Earth explorer mission CryoSat-2 has an ice-monitoring objective, but it has proven to also be a valuable source of observations for measuring impacts of climate change over oceans.
Marc Naeije, Alessandro Di Bella, Teresa Geminale, Pieter Visser   +3 more
doaj   +1 more source

Reconstructing Large- and Mesoscale Dynamics in the Black Sea Region from Satellite Imagery and Altimetry Data—A Comparison of Two Methods

Remote Sensing, 2018
Two remote sensing methods, satellite altimetry and 4D-Var assimilation of satellite imagery, are used to compute surface velocity fields in the Black Sea region.
Arseny Kubryakov, Evgeny Plotnikov, Sergey Stanichny   +2 more
doaj   +1 more source

Using Sea Level to Determine the Strength, Structure and Variability of the Cape Horn Current

Geophysical Research Letters, 2023
The Cape Horn Current (CHC) is one of the components of the Antarctic Circumpolar Current system that enables it to fulfill its crucial role as a conduit between ocean basins.
Qi Zheng, Rory Bingham, Oliver Andrews
doaj   +1 more source