Harald Johnsen
Adjunct Professor / Earth Observation
Anis Elyouncha,
Leif E. B. Eriksson,
Harald Johnsen
:
Direct Comparison of Sea Surface Velocity Estimated From Sentinel-1 and TanDEM-X SAR Data
Henning Heiberg-Andersen,
Heidi Hindberg,
Jørn Havås Mæland,
Harald Johnsen,
Torleif Lothe,
Leonid Vasilyev
:
Comparison of Simulated Offshore Wind Farm Wakes and SAR Images
Artem Moiseev,
Johnny Andre Johannessen,
Harald Johnsen
:
Towards Retrieving Reliable Ocean Surface Currents in the Coastal Zone From the Sentinel-1 Doppler Shift Observations
Journal of Geophysical Research (JGR): Oceans 05. May 2022 DOI
Mathias Tollinger,
Rune Graversen,
Harald Johnsen
:
High-resolution polar low winds obtained from unsupervised sar wind retrieval
Artem Moiseev,
Harald Johnsen,
Morten Wergeland Hansen,
Johnny Andre Johannessen
:
Evaluation of Radial Ocean Surface Currents Derived From Sentinel-1 IW Doppler Shift Using Coastal Radar and Lagrangian Surface Drifter Observations
Journal of Geophysical Research (JGR): Space Physics 2020 DOI
Artem Moiseev,
Harald Johnsen,
Johnny Andre Johannessen,
Fabrice Collard,
Gilles Guitton
:
On removal of sea state contribution to Sentinel-1 Doppler shift for retrieving reliable ocean surface current
Journal of Geophysical Research (JGR): Oceans 26. August 2020 DOI
Fabrice Ardhuin,
Peter Brandt,
Lucile Gaultier,
Craig James Donlon,
Alessandro Battaglia,
Francois Boy
et al.:
SKIM, a Candidate Satellite Mission Exploring Global Ocean Currents and Waves
Dennis Monteban,
Raed Lubbad,
Harald Johnsen
:
Sentinel-1 sar observations of peak wavelength and dominant wave direction in the marginal ice zone of the barents sea
Proceedings - International Conference on Port and Ocean Engineering under Arctic Conditions 2019 ARKIV
Harald Johnsen,
Geir Engen,
Vegard Nilsen
:
A Novel Approach to SAR Ocean Wind Retrieval
IEEE Transactions on Geoscience and Remote Sensing 2019 DOI
Dennis Monteban,
Harald Johnsen,
Raed Lubbad
:
Spatiotemporal observations of wave dispersion within sea ice using Sentinel-1 SAR TOPS mode
Journal of Geophysical Research (JGR): Oceans 2019 DOI
Christine Gommenginger,
Bertrand Chapron,
Andy Hogg,
Christian Buckingham,
Baylor Fox-Kemper,
Leif A Eriksson
et al.:
SEASTAR: A Mission to Study Ocean Submesoscale Dynamics and Small-Scale Atmosphere-Ocean Processes in Coastal, Shelf and Polar Seas
Frontiers in Marine Science 2019 DOI
Morten Wergeland Hansen,
Harald Johnsen,
Jeong-Won Park,
Geir Engen
:
A new look at Envisat ASAR range Doppler shift retrieval with the aim of reprocessing ten years of level-0 data
VDE Verlag GmbH 2018
Thomas Kræmer,
Harald Johnsen,
Camilla Brekke,
Geir Engen
:
Comparing SAR based short time-lag cross-correlation and Doppler derived sea ice drift velocities
Said Faozi,
Harald Johnsen,
Frédéric Nouguier,
Bertrand Chapron,
Geir Engen
:
Onto a skewness approach to the generalized curvature ocean surface scattering model
IEEE Transactions on Geoscience and Remote Sensing 2017 DOI
Valentina Boccia,
Erik De Witte,
Josep Roselló,
Michel Tossaint,
Craig J. Donlon,
Klaus. Scipal
et al.:
StereoSAR: A multi-static SAR mission concept to enhance Sentinel-1 capabilities for measuring ocean dynamics
Proceedings of SPIE, the International Society for Optical Engineering 2017 DOI
Harald Johnsen,
Vegard Nilsen,
Geir Engen,
Alexis A. Mouche,
Fabrice Collard
:
Ocean Doppler anomaly and ocean surface current from Sentinel 1 tops mode.
IEEE International Geoscience and Remote Sensing Symposium proceedings 2016 DOI
Nuno Almeida,
Nuno Catarino,
Antonio Gutiérrez,
Nuno Grosso,
João Andrade,
Hervé Caumont
et al.:
SENSYF experience on integration of EO services in a generic, cloud-based EO exploitation platform
ESA SP 2016
Faozi Said,
Harald Johnsen,
Bertrand Chapron,
Geir Engen
:
An ocean wind Doppler model based on the
generalized curvature ocean surface scattering
model
IEEE Transactions on Geoscience and Remote Sensing 2015 DOI
Thomas Kræmer,
Harald Johnsen,
Camilla Brekke
:
Emulating sentinel-1 Doppler radial ice drift measurements using envisat ASAR data
Faozi Said,
Harald Johnsen
:
Ocean Surface Wind Retrieval From Dual-Polarized SAR Data Using the Polarization Residual Doppler Frequency
IEEE Transactions on Geoscience and Remote Sensing 28. February 2014 DOI
Thomas Kræmer,
Harald Johnsen,
Camilla Brekke
:
Improving Doppler frequency estimation from Envisat data
D. Giudici,
A. Villa,
L. Recchia,
A. M. Guarnieri,
Harald Johnsen,
P. Meadows
et al.:
Long term PS-Cal analysis of ERS and ASAR data and comparison to other calibration techniques.
VDE Verlag GmbH 2014 DATA
Geir Engen,
Harald Johnsen,
Yngvar Larsen
:
Sentinel-1 Geophysical Doppler Product - Performance and Application
VDE Verlag GmbH 2014 DATA
Faozi Said,
Harald Johnsen
:
Sea surface wind retrieval using both normalized radar cross-section and polarization residual Doppler frequency from TerraSAR-X data
Geir Engen,
Harald Johnsen
:
High-precision Doppler estimation for ocean applications
ESA SP 2012
Fabrice Collard,
L Aouf,
Harald Johnsen
:
Wave mode processing algorithms, product validation and assimilation. Wave retrievals and applications - White Paper
ESA SP 2012
Harald Johnsen,
Fabrice Collard
:
SAR wave processing – improvements towards Sentinel-1 mission
ESA SP 2012 FULLTEKST
Faozi Said,
Harald Johnsen
:
Assessment of ocean wind retrieval from dual-polarized x-band SAR data
Harald Johnsen,
Geir Engen,
Guitton Gilles
:
Sea surface polarization ratio from Envisat ASAR AP Data
IEEE Transactions on Geoscience and Remote Sensing 2008 DOI
Harald Johnsen
:
Assessment of calibrated Sentinel-1 OCN RVL products
NORCE Norwegian Research Centre 2022
Morten Wergeland Hansen,
Harald Johnsen,
Jeong-Won Park,
Geir Engen
:
A new look at Envisat ASAR range Doppler shift retrieval with the aim of reprocessing ten years of level-0 data
2018
Harald Johnsen
:
Scientific Assessment of TSCV Retrievals from Stereo-SAR – A critical Review. (4/2018)
2018
Harald Johnsen
:
Ocean Current from Space Radars - challenges and opportunities
2018
Harald Johnsen
:
Ocean Current from Sentinel-1 Doppler
2018
Vegard Nilsen,
Harald Johnsen,
Geir Engen
:
A novel approach to SAR ocean wind retrieval
2018
Morten Wergeland Hansen,
Harald Johnsen,
Geir Engen,
Jeong-Won Park,
Artem Moiseev
:
Improved knowledge of high latitude ocean circulation with Synthetic Aperture Radar (ISAR)
ESA-PRODEX-ISAR FINAL REPORT
2018
Morten Wergeland Hansen,
Harald Johnsen,
Geir Engen,
Jan Even Øie Nilsen
:
Improved measurement of sea surface velocity from synthetic aperture radar
2017 SAMMENDRAG
Harald Johnsen,
Geir Engen
:
Doppler shifts retrieval from Sentinel 1 - Status and Way Forward
2017 PROSJEKT
Valentina Boccia,
Erik De Witte,
Josep Rosello,
Michel Tossaint,
Craig J. Donlon,
Klaus. Scipal
et al.:
A multi-static SAR mission concept enhancing Sentinel-1 capability in
surface current dynamics retrieval
2017
Morten Wergeland Hansen,
Jeong-Won Park,
Harald Johnsen,
Geir Engen
:
Improved measurement of sea surface velocity from synthetic aperture radar
2017
Morten Wergeland Hansen,
Geir Engen,
Harald Johnsen,
Johnny Andre Johannessen,
Anton Korosov
:
Improved measurements of sea surface velocity from Envisat ASAR and Sentinel-1
2016
Harald Johnsen
:
Ocean Currents and Sentinel 1
2015
Yngvar Larsen,
Harald Johnsen,
Petar Marinkovic,
Andrew Hooper,
Tim Wright,
Pablo González
et al.:
InSARap at a glance - Team B
2014
Yngvar Larsen,
Harald Johnsen,
Petar Marinkovic,
Andrew Hooper,
Tim Wright,
Pablo González
et al.:
Sentinel-1 for InSAR based scientific applications
2014
Yngvar Larsen,
Harald Johnsen,
Petar Marinkovic,
Andrew Hooper,
Tim Wright,
Pablo González
et al.:
Sentinel-1 TOPS - technical challenges (and opportunities)
2014
Harald Johnsen,
Fabrice Collard
:
ERS Wave mission reprocessing – QC support - Envisat mission extension support: Assessment of WV Product Quality after Orbit Change. (1/2014)
2014
Harald Johnsen,
Geir Engen
:
SAR Doppler for Ocean Current Measurement - processing requirements and performance
2013
Eirik Malnes,
Harald Johnsen,
Hanne H Christiansen,
Wesley R. Farnsworth
:
Backscatter Sensitivity Analysis Using TerraSAR-X Data
2013
yngvar Larsen,
Eirik Malnes,
Harald Johnsen,
Tom Rune Lauknes,
Markus Eckerstorfer
:
TerraSAR-X data used for monitoring snow water equivalent and permafrost on Svalbard
2013
N. Miranda,
B. Rosich,
P.J. Meadows,
K. Haria,
D. Small,
A. Schubert
et al.:
THE ENVISAT ASAR MISSION: A LOOK BACK AT 10 YEARS OF OPERATION
2013
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