Browsing NORCE vitenarkiv by Author "Johnsen, Harald"
Now showing items 1-8 of 8
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Assessment of calibrated Sentinel-1 OCN RVL products
Johnsen, Harald (Research report, 2022)The accuracy and precision of the calibrated DC frequency of S1 WV and IW acquisitions are assessed using data acquired over both land and ocean areas. Data from the period of 1st of May 2019 until 30th of April 2020 are ... -
Emulating sentinel-1 Doppler radial ice drift measurements using envisat ASAR data
Kræmer, Thomas; Johnsen, Harald; Brekke, Camilla (Peer reviewed; Journal article, 2015) -
ERS Wave mission reprocessing – QC support - Envisat mission extension support: Assessment of WV Product Quality after Orbit Change. (1/2014)
Johnsen, Harald; Collard, Fabrice (Research report, 2014) -
Harmony Phase 0/A
Johnsen, Harald (Research report, 2019)This technical note provides some general considerations on the geophysical requirements of the Harmony L2 Ocean products and their implications to the mission requirements. Section 2 gives an overview of the geophysical ... -
S1 + CS Feasibility Study - Assessment of wind/wave/current retrieval methodology. (20/2016)
Johnsen, Harald (Report, 2016)This work is done as part of a CCN related to the S1+CS study performed by Airbus Defence & Space for the European Space Agency. The document gives a high-level description of possible wind/wave/current retrieval ... -
Scientific Assessment of TSCV - Retrieval from Stereo-Sar-Retrieval Algorithm
Johnsen, Harald (Research report, 2019)In this technical note we provide a detailed description of ocean current retrieval algorithm to be applied in the end-toend performance simulator. The retrieval algorithm is based on the forward and retrieval models ... -
Scientific Assessment of TSCV Retrievals from Stereo-SAR – A critical Review. (4/2018)
Johnsen, Harald (Research report, 2018) -
Sentinel-1 sar observations of peak wavelength and dominant wave direction in the marginal ice zone of the barents sea
Monteban, Dennis; Lubbad, Raed; Johnsen, Harald (Peer reviewed; Journal article, 2019)Synthetic aperture radar (SAR) has proven to be a very important source of data in the Polar regions because it covers large areas continuously, independent of the weather and time of day. In this study, we make use of ...