Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay. / Stenseng, Lars; Andersen, Ole Baltazar.

In: Advances in Space Research, Vol. 50, No. 8, 2012, p. 1158-1163.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

APA

CBE

MLA

Vancouver

Author

Stenseng, Lars; Andersen, Ole Baltazar / Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay.

In: Advances in Space Research, Vol. 50, No. 8, 2012, p. 1158-1163.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{5924abbf99b64bcba80b6a78eea015f9,
title = "Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay",
keywords = "CryoSat-2, Retracking, Gravity field, Ocean, Sea-ice",
publisher = "Pergamon",
author = "Lars Stenseng and Andersen, {Ole Baltazar}",
year = "2012",
doi = "10.1016/j.asr.2012.02.029",
volume = "50",
number = "8",
pages = "1158--1163",
journal = "Advances in Space Research",
issn = "0273-1177",

}

RIS

TY - JOUR

T1 - Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay

A1 - Stenseng,Lars

A1 - Andersen,Ole Baltazar

AU - Stenseng,Lars

AU - Andersen,Ole Baltazar

PB - Pergamon

PY - 2012

Y1 - 2012

N2 - A number of geophysical phenomenons in the open ocean are still unresolved by conventional altimetry, but could be resolved through the potential improvements offered by Synthetic Aperture Radar (SAR), also called Delay-Doppler, altimetry. The SAR altimeter offers the following benefits with respect to conventional satellite altimetry: factor of 20 improvements in the along-track resolution, the along-track footprint length which does not vary with wave height (sea state), and improved precision in sea surface height measurements<br/>or sea surface slope measurements. In this paper these improvements are studied with respect to retrieval of short wavelength geophysical signal related to mainly bathymetric features. In an analysis of simulated data it was found that the combination of upward continuation from the sea bottom and smoothing of the altimeter observations meant that the best recovery of geophysical signal was achieved from measurements averaged to 5 Hz, rather than the simulated 20 Hz full resolution data. A first validation of these theoretical modelling results with respect to resolution and noise is presented using various CryoSat-2 data, and evaluated against conventional radar altimeter data from the older ERS-1 Geodetic Missions.

AB - A number of geophysical phenomenons in the open ocean are still unresolved by conventional altimetry, but could be resolved through the potential improvements offered by Synthetic Aperture Radar (SAR), also called Delay-Doppler, altimetry. The SAR altimeter offers the following benefits with respect to conventional satellite altimetry: factor of 20 improvements in the along-track resolution, the along-track footprint length which does not vary with wave height (sea state), and improved precision in sea surface height measurements<br/>or sea surface slope measurements. In this paper these improvements are studied with respect to retrieval of short wavelength geophysical signal related to mainly bathymetric features. In an analysis of simulated data it was found that the combination of upward continuation from the sea bottom and smoothing of the altimeter observations meant that the best recovery of geophysical signal was achieved from measurements averaged to 5 Hz, rather than the simulated 20 Hz full resolution data. A first validation of these theoretical modelling results with respect to resolution and noise is presented using various CryoSat-2 data, and evaluated against conventional radar altimeter data from the older ERS-1 Geodetic Missions.

KW - CryoSat-2

KW - Retracking

KW - Gravity field

KW - Ocean

KW - Sea-ice

U2 - 10.1016/j.asr.2012.02.029

DO - 10.1016/j.asr.2012.02.029

JO - Advances in Space Research

JF - Advances in Space Research

SN - 0273-1177

IS - 8

VL - 50

SP - 1158

EP - 1163

ER -