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2021
1 Tollinger, Mathias; Graversen, Rune; Johnsen, Harald.
High-resolution polar low winds obtained from unsupervised sar wind retrieval. Remote Sensing 2021 ;Volum 13.(22) s. -
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2020
2 Moiseev, Artem; Johnsen, Harald; Hansen, Morten Wergeland; Johannessen, Johnny Andre.
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 ;Volum 125:e2019JC015743.(4) s. 1-18
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3 Moiseev, Artem; Johnsen, Harald; Johannessen, Johnny Andre; Collard, Fabrice; Guitton, Gilles.
On removal of sea state contribution to Sentinel-1 Doppler shift for retrieving reliable ocean surface current. Journal of Geophysical Research (JGR): Oceans 2020 ;Volum 125:e2020JC016288.(9) s. 1-13
NERSC NORCE UiB Untitled
 
2019
4 Ardhuin, Fabrice; Brandt, Peter; Gaultier, Lucile; Donlon, Craig James; Battaglia, Alessandro; Boy, Francois; Casal, Tania; Chapron, Bertrand; Collard, Fabrice; Cravatte, Sophie; Delouis, Jean-Marc; De Witte, Erik; Dibarboure, Gerald; Engen, Geir; Johnsen, Harald; Lique, Camille; López-Dekker, Paco; Maes, Christophe; Martin, Adrien; Marie, Louis; Menemenlis, Dimitris; Nouguier, Frederic; Peureux, Charles; Rampal, Pierre; Ressler, Gerhard; Rio, Marie-Helene; Rommen, Bjorn; Shutler, Jamie D.; Suess, Martin; Tsamados, Michel; Van Sebille, Erik; Ubelmann, Clement; Van den Oever, Martin; Stammer, Detlef.
SKIM, a Candidate Satellite Mission Exploring Global Ocean Currents and Waves. Frontiers in Marine Science 2019 ;Volum 6.(209) s. -
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5 Gommenginger, Christine; Chapron, Bertrand; Hogg, Andy; Buckingham, Christian; Fox-Kemper, Baylor; Eriksson, Leif A; Soulat, Francois; Ubelmann, Clement; Ocampo-Torres, Francisco; Buongiorno Nardelli, Bruno; Griffin, David; López-Dekker, Paco; Knudsen, Per; Andersen, Ole; Stenseng, Lars; Stapleton, Neil; Perrie, William; Violante-Carvalho, Nelson; Schulz-Stellenfleth, Johannes; Woolf, David; Isern-Fontanet, Jordi; Ardhuin, Fabrice; Klein, Patrice; Mouche, Alexis; Pascual, Ananda; Capet, Xavier; Hauser, Danièle; Stoffelen, Ad; Morrow, Rosemary; Aouf, Lotfi; Breivik, Øyvind; Fu, Lee-Lueng; Johannessen, Johnny Andre; Aksenov, Yevgeny; Bricheno, Lucy; Hirschi, Joel; Martin, Adrien C. H; Martin, Adrian P.; Nurser, George; Polton, Jeff; Johnsen, Harald; Wolf, Judith; Soloviev, Alexander; Jacobs, Gregg A.; Collard, Fabrice; Groom, Steve; Kudryavtsev, Vladimir; Wilkin, John; Navarro, Víctor; Babanin, Alex; Martin, Matthew; Siddorn, John; Saulter, Andrew; Rippeth, Tom; Emery, Bill; Maximenko, Nikolai; Romeiser, Roland; Graber, Hans; Azcarate, Aida Alvera; Hughes, Chris W.; Vandemark, Doug; Da Silva, Jose; van Leeuwen, Peter Jan; Naveira-Garabato, Alberto; Gemmrich, Johannes; Mahadevan, Amala; Marquez, Jose; Munro, Yvonne; Doody, Sam; Geoff, Burbidge.
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 ;Volum 6.(457)
MET NERSC UiB UiT Untitled
 
6 Johnsen, Harald; Engen, Geir; Nilsen, Vegard.
A Novel Approach to SAR Ocean Wind Retrieval. IEEE Transactions on Geoscience and Remote Sensing 2019 ;Volum 57.(19) s. 6986-6995
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7 Monteban, Dennis; Johnsen, Harald; Lubbad, Raed.
Spatiotemporal observations of wave dispersion within sea ice using Sentinel-1 SAR TOPS mode. Journal of Geophysical Research (JGR): Oceans 2019 ;Volum 124.(12) s. 8522-8537
NORCE NTNU Untitled
 
8 Monteban, Dennis; Lubbad, Raed; Johnsen, Harald.
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 ;Volum 2019-June.
NORCE NTNU Untitled
 
2018
9 Hansen, Morten Wergeland; Johnsen, Harald; Engen, Geir; Park, Jeong-Won; Moiseev, Artem.
Improved knowledge of high latitude ocean circulation with Synthetic Aperture Radar (ISAR) ESA-PRODEX-ISAR FINAL REPORT. Bergen: Nansen Senter for Miljø og Fjernmåling 2018 70 s. NERSC Technical Report(397)
NERSC NORCE UiT Untitled
 
10 Hansen, Morten Wergeland; Johnsen, Harald; Park, Jeong-Won; Engen, Geir.
A new look at Envisat ASAR range Doppler shift retrieval with the aim of reprocessing ten years of level-0 data. I: EUSAR 2018; 12th European Conference on Synthetic Aperture Radar. VDE Verlag GmbH 2018 ISBN 978-3-8007-4636-1. s. 1423-1428
NERSC NORCE Untitled
 
11 Hansen, Morten Wergeland; Johnsen, Harald; Park, Jeong-Won; Engen, Geir.
A new look at Envisat ASAR range Doppler shift retrieval with the aim of reprocessing ten years of level-0 data. EUSAR 2018 - 12th European Conference on Synthetic Aperture Radar; 2018-06-04 - 2018-06-07
NERSC NORCE UiT Untitled
 
12 Johnsen, Harald.
Ocean Current from Sentinel-1 Doppler. Chalmers Seminar 2018; 2018-12-07 - 2018-12-07
UiT Untitled
 
13 Johnsen, Harald.
Ocean Current from Space Radars - challenges and opportunities. CIRFA Seminar; 2018-09-13 - 2018-09-13
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14 Johnsen, Harald.
Scientific Assessment of TSCV Retrievals from Stereo-SAR – A critical Review. (4/2018). Tromsø: Norut 2018 (ISBN 978-82-7492-403-1) 28 s.
NORCE Untitled
 
15 Nilsen, Vegard; Johnsen, Harald; Engen, Geir.
A novel approach to SAR ocean wind retrieval. SEASAR2018, 7-10 May,2018, ESRIN,Frascati; 2018-05-07 - 2018-05-10
NORCE UiT Untitled
 
2017
16 Boccia, Valentina; De Witte, Erik; Roselló, Josep; Tossaint, Michel; Donlon, Craig J.; Scipal, Klaus.; Burbidge, Geoff; Johnsen, Harald; Fois, Franco; Engen, Geir; Bibby, David.
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 ;Volum 10423.
NORCE Untitled
 
17 Boccia, Valentina; Witte, Erik De; Rosello, Josep; Tossaint, Michel; Donlon, Craig J.; Scipal, Klaus.; Burbidge, Geoff; Johnsen, Harald; Engen, Geir.
A multi-static SAR mission concept enhancing Sentinel-1 capability in surface current dynamics retrieval. SPIE Remote Sensing 2017, 11-14 Sep., Warsaw, Poland; 2017-09-11 - 2017-09-13
NORCE UiT Untitled
 
18 Faozi, Said; Johnsen, Harald; Nouguier, Frédéric; Chapron, Bertrand; Engen, Geir.
Onto a skewness approach to the generalized curvature ocean surface scattering model. IEEE Transactions on Geoscience and Remote Sensing 2017 ;Volum 55.(10) s. 5843-5853
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19 Hansen, Morten Wergeland; Johnsen, Harald; Engen, Geir; Nilsen, Jan Even Øie.
Improved measurement of sea surface velocity from synthetic aperture radar. EGU General Assembly; 2017-04-24 - 2017-04-28
NERSC NORCE UiB UiT Untitled
 
20 Hansen, Morten Wergeland; Park, Jeong-Won; Johnsen, Harald; Engen, Geir.
Improved measurement of sea surface velocity from synthetic aperture radar. EuroGOOS International Conference: Operational Oceanography serving sustainable marine development; 2017-10-03 - 2017-10-05
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21 Johnsen, Harald; Engen, Geir.
Doppler shifts retrieval from Sentinel 1 - Status and Way Forward. GlobCurrent Workshop, 21-23 March 2017, ESA/ESRIN, Frascati, Italy; 2017-03-21 - 2017-03-23
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22 Kræmer, Thomas; Johnsen, Harald; Brekke, Camilla; Engen, Geir.
Comparing SAR based short time-lag cross-correlation and Doppler derived sea ice drift velocities. IEEE Transactions on Geoscience and Remote Sensing 2017 ;Volum 56.(4) s. 1898-1908
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2016
23 Almeida, Nuno; Catarino, Nuno; Gutiérrez, Antonio; Grosso, Nuno; Andrade, João; Caumont, Hervé; Gonçalves, Pedro; Villa, Guillermo; Mangin, Antoine; Serra, Romain; Johnsen, Harald; Grydeland, Tom; Emsley, Stephen; Jauch, Eduardo; Moreno, Jose; Ruiz, Antonio.
SENSYF experience on integration of EO services in a generic, cloud-based EO exploitation platform. ESA SP 2016 ;Volum SP-740. s. 1-5
NORCE Untitled
 
24 Hansen, Morten Wergeland; Engen, Geir; Johnsen, Harald; Johannessen, Johnny Andre; Korosov, Anton.
Improved measurements of sea surface velocity from Envisat ASAR and Sentinel-1. ESA Living Planet Symposium; 2016-05-09 - 2016-05-13
NERSC NORCE UiB Untitled
 
25 Johnsen, Harald; Nilsen, Vegard; Engen, Geir; Mouche, Alexis A.; Collard, Fabrice.
Ocean Doppler anomaly and ocean surface current from Sentinel 1 tops mode.. IEEE International Geoscience and Remote Sensing Symposium proceedings 2016 s. 3993-3996
NORCE Untitled
 
2015
26 Johnsen, Harald.
Ocean Currents and Sentinel 1. Ocean Current Workshop, 2-3 Nov 2015; 2015-11-02 - 2015-11-03
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27 Kræmer, Thomas; Johnsen, Harald; Brekke, Camilla.
Emulating sentinel-1 Doppler radial ice drift measurements using envisat ASAR data. IEEE Transactions on Geoscience and Remote Sensing 2015 ;Volum 53.(12) s. 6407-6418
NORCE UiT Untitled
 
28 Said, Faozi; Johnsen, Harald; Chapron, Bertrand; Engen, Geir.
An ocean wind Doppler model based on the generalized curvature ocean surface scattering model. IEEE Transactions on Geoscience and Remote Sensing 2015 ;Volum 53.(12) s. 6632-6638
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2014
29 Larsen, Yngvar; Johnsen, Harald; Marinkovic, Petar; Hooper, Andrew; Wright, Tim; González, Pablo; Perski, Zbigniew; Dehls, John F..
InSARap at a glance - Team B. INSARAP - Technical Workshop on Sentinel-1 TOPS Interferometry; 2014-12-10 - 2014-12-11
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30 Larsen, Yngvar; Johnsen, Harald; Marinkovic, Petar; Hooper, Andrew; Wright, Tim; González, Pablo; Perski, Zbigniew; Dehls, John F..
Sentinel-1 for InSAR based scientific applications. INSARAP - Technical Workshop on Sentinel-1 TOPS Interferometry; 2014-12-10 - 2014-12-11
NGU NORCE UiT Untitled
 
31 Larsen, Yngvar; Johnsen, Harald; Marinkovic, Petar; Hooper, Andrew; Wright, Tim; González, Pablo; Perski, Zbigniew; Dehls, John F..
Sentinel-1 TOPS - technical challenges (and opportunities). INSARAP - Technical Workshop on Sentinel-1 TOPS Interferometry; 2014-12-10 - 2014-12-11
NGU NORCE UiT Untitled
 
32 Engen, Geir; Johnsen, Harald; Larsen, Yngvar.
Sentinel-1 Geophysical Doppler Product - Performance and Application. I: EUSAR 2014; 10th European Conference on Synthetic Aperture Radar; Proceedings of. VDE Verlag GmbH 2014 ISBN 978-3-8007-3607-2. s. -
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33 Giudici, D.; Villa, A.; Recchia, L.; Guarnieri, A. M.; Johnsen, Harald; Meadows, P.; Mouche, A.; Miranda, N.; Ottavianelli, Giuseppe.
Long term PS-Cal analysis of ERS and ASAR data and comparison to other calibration techniques.. I: EUSAR 2014; 10th European Conference on Synthetic Aperture Radar; Proceedings of. VDE Verlag GmbH 2014 ISBN 978-3-8007-3607-2. s. 1-4
NORCE Untitled
 
34 Johnsen, Harald; Collard, Fabrice.
ERS Wave mission reprocessing – QC support - Envisat mission extension support: Assessment of WV Product Quality after Orbit Change. (1/2014). Tromsø: Norut 2014 (ISBN 978-82-7492-279-2) 12 s.
NORCE Untitled
 
35 Kræmer, Thomas; Johnsen, Harald; Brekke, Camilla.
Improving Doppler frequency estimation from Envisat data. IEEE International Geoscience and Remote Sensing Symposium proceedings 2014 s. 1124-1127
UiT Untitled
 
36 Said, Faozi; Johnsen, Harald.
Ocean Surface Wind Retrieval From Dual-Polarized SAR Data Using the Polarization Residual Doppler Frequency. IEEE Transactions on Geoscience and Remote Sensing 2014 ;Volum 52.(7) s. 3980-3990
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2013
37 Johnsen, Harald; Engen, Geir.
SAR Doppler for Ocean Current Measurement - processing requirements and performance. Ocean Current Workshop, 6-8 May 2013, ESTEC; 2013-05-06 - 2013-05-08
NORCE UiT Untitled
 
38 Larsen, yngvar; Malnes, Eirik; Johnsen, Harald; Lauknes, Tom Rune; Eckerstorfer, Markus.
TerraSAR-X data used for monitoring snow water equivalent and permafrost on Svalbard. 5. TerraSAR-X Science Team Meeting; 2013-06-10 - 2013-06-14
NORCE Untitled
 
39 Malnes, Eirik; Johnsen, Harald; Christiansen, Hanne H; Farnsworth, Wesley R..
Backscatter Sensitivity Analysis Using TerraSAR-X Data. Living Planet Symposium - 2013; 2013-09-09 - 2013-09-13
NORCE UiT UNIS Untitled
 
40 Miranda, N.; Rosich, B.; Meadows, P.J.; Haria, K.; Small, D.; Schubert, A.; Lavalle, M.; Collard, F.; Johnsen, Harald; Monti Guarnieri, A.; D´Aria, D..
THE ENVISAT ASAR MISSION: A LOOK BACK AT 10 YEARS OF OPERATION. Living Planet Symposium - 2013; 2013-09-09 - 2013-09-13
UiT Untitled
 
2012
41 Collard, Fabrice; Aouf, L; Johnsen, Harald.
Wave mode processing algorithms, product validation and assimilation. Wave retrievals and applications - White Paper. ESA SP 2012
NORCE Untitled
 
42 Engen, Geir; Johnsen, Harald.
High-precision Doppler estimation for ocean applications. ESA SP 2012 s. 1-17
NORCE Untitled
 
43 Johnsen, Harald; Collard, Fabrice.
SAR wave processing – improvements towards Sentinel-1 mission. ESA SP 2012
NORCE Untitled
 
44 Said, Faozi; Johnsen, Harald.
Assessment of ocean wind retrieval from dual-polarized x-band SAR data. I: 9th European Conference on Synthetic Aperture Radar, Electronic Proceedings, 23-26 April 2012, Nürnberg, Germany. VDE Verlag GmbH 2012 ISBN 978-3-8007-3404-7. s. 653-656
NORCE UiT Untitled
 
45 Said, Faozi; Johnsen, Harald.
Sea surface wind retrieval using both normalized radar cross-section and polarization residual Doppler frequency from TerraSAR-X data. I: Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International. IEEE conference proceedings 2012 ISBN 978-1-4673-1159-5. s. 2063-2066
NORCE UiT Untitled
 
2008
46 Johnsen, Harald; Engen, Geir; Gilles, Guitton.
Sea surface polarization ratio from Envisat ASAR AP Data. IEEE Transactions on Geoscience and Remote Sensing 2008 ;Volum 46.(11) Suppl. 1 s. 3637-3646
NORCE UiT Untitled
 
2006
47 Engen, Geir; Johnsen, Harald; Pedersen, Ida Friestad; Elfouhaily, Tanos.
Curvature Effects in Ocean Surface Scattering. IEEE Transactions on Antennas and Propagation 2006 ;Volum 54.(5) s. 1370-1379
NORCE UiO UiT Untitled
 
2003
48 Amlien, Jostein; Johnsen, Harald.
Oversikt over tilgjengelige satellittdata relevant or kryosfæren (KryoNor1 WP 1100). Oslo: Norsk Regnesentral 2003 NR-notat(SAMBA/08/03)
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49 Rognes, Anders; Amlien, Jostein; Johnsen, Harald; Solberg, Rune.
Kostnytteanalyse (KryoNor1 WP1300). Oslo: Norsk Regnesentral 2003 NR-notat(SAMBA/10/03)
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2000
50 Alteren, Gro; Solheim, Inger; Johnsen, Harald; Buanes, Arild, NORUT Samfunn.
Markedsundersøkelse romjordteknologi. Tromsø: Norut Informasjonsteknologi 2000 40 s.
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