Results 171 to 180 of about 24,572,978 (199)
Some of the next articles are maybe not open access.
CryoSat-2 Ocean Altimetry Assessment
2016CryoSat-2 was launched April 2010 and has been monitoring the Earth’s cryosphere and oceans since with unprecedented accuracy and precision by an ice-dedicated altimeter capable of measuring in LRM, SAR and SARin mode. In this paper we validate CryoSat-2 LRM, RDSAR, IOP and GOP ocean data and assess their quality in comparison with other altimeters by ...
Naeije, Marc, Schrama, Ernst
openaire +1 more source
A demonstration of the potential of Cryosat-2 to contribute to mesoscale observation
Advances in Space Research, 2012Abstract Cryosat-2 was designed for its primary scientific objectives, i.e. for cryosphere science. As far as oceanography is concerned, various mission design choices make it less accurate than missions designed to comply with ocean surface topography requirements such as Jason-2 or ENVISAT.
G. Dibarboure +4 more
openaire +1 more source
Validation of the extended CryoSat-2 ocean data products
2017Operational marine products from CryoSat-2, generated by a dedicated processor, have been available since April 2014. Here we present some results of a verification and scientific validation of the Geophysical Ocean Products (GOP), which have consolidated orbits and are available 30 days after acquisition.
Cipollini, Paolo +5 more
openaire +1 more source
Precision orbit determination performance for CryoSat-2
Advances in Space Research, 2018Abstract In this paper we discuss our efforts to perform precision orbit determination (POD) of CryoSat-2 which depends on Doppler and satellite laser ranging tracking data. A dynamic orbit model is set-up and the residuals between the model and the tracking data is evaluated. The average r.m.s. of the 10 s averaged Doppler tracking pass residuals is
openaire +3 more sources
Improved retrieval of sea ice thickness from SMOS and CryoSat-2
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015We investigate the potential of a synergetic combination of data from ESA's SMOS and CryoSat-2 mission for sea ice thickness retrieval. SMOS and CryoSat-2 provide complementary information because of their different spatio-temporal sampling and resolution, and because of the complementary uncertainty due to the fundamental difference of the radiometric
Lars Kaleschke +5 more
openaire +2 more sources
Cryosat-2: Impact of Mission Resuscitation on Data System
SpaceOps 2010 Conference, 2010In October 2005, a launcher failure ended the CryoSat mission before that a single bit could be processed by the Ground Segment. Since the future of the mission was not known a formal close-down of the activities, including the documentation and all systems was performed, ensuring consolidation of pending issues and configuration control of all the ...
Damiano Guerrucci +3 more
openaire +1 more source
Orbit accuracy at the 12th year anniversary of Cryosat-2 mission
2022For the CryoSat-2 mission precision orbit determination (POD) is performed with the DORIS system and satellite laser ranging. The POD method requires that there are accurate models to describe the accelerations acting on the satellite. The importance of dynamic models increases when the tracking data is not continuously available; due to the 725 km ...
Schrama, Ernst, Visser, Pieter
openaire +1 more source
Cryosat-2 altimetry of BC Coastal Mountain glaciers
Remote Sensing Letters, 2016ABSTRACTCryosat-2 altimetry, for the period July 2010 to January 2016, shows widespread melting of glaciers in the southern part of the British Columbia (BC) Coastal Mountain range in western Canada. The Interferometric Radar Altimeter on Cryosat-2 is in synthetic aperture mode in this area, recording elevations of suitably-sloping targets out to about
openaire +1 more source
Measuring the Pitch of CryoSat-2 Using the SAR Mode of the SIRAL Altimeter
IEEE Geoscience and Remote Sensing Letters, 2014This letter describes the retrieval of the pitch of the CryoSat-2 satellite from the full bit rate (FBR) SAR mode data that are collected over the ocean by the SAR/Interferometric Radar Altimeter (SIRAL). Starting with the FBR SAR mode data, we form beams at the forward and backward look angles with respect to the nadir direction.
Natalia Galin +4 more
openaire +1 more source
Calibration of the CryoSat-2 Interferometer and Measurement of Across-Track Ocean Slope
IEEE Transactions on Geoscience and Remote Sensing, 2013This paper describes the calibration of the CryoSat-2 interferometer, whose principal purpose is to accurately measure the height of the Antarctic and Greenland ice sheets. A sequence of CryoSat-2 data acquisitions over the tropical and midlatitude oceans were obtained between June and September 2010, from the SIRAL “A” and redundant SIRAL “B” radars ...
Natalia Galin +5 more
openaire +1 more source