J
Johannes Röhrs
Researcher at Norwegian Meteorological Institute
Publications - 35
Citations - 913
Johannes Röhrs is an academic researcher from Norwegian Meteorological Institute. The author has contributed to research in topics: Stokes drift & Ocean current. The author has an hindex of 13, co-authored 31 publications receiving 634 citations. Previous affiliations of Johannes Röhrs include University of Hamburg.
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OpenDrift v1.0: a generic framework for trajectory modelling
TL;DR: OpenDrift is an open-source Python-based framework for Lagrangian particle modelling under development at the Norwegian Meteorological Institute, and is designed for flexibility, and researchers may easily adapt or write modules for their specific purpose.
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Observation-based evaluation of surface wave effects on currents and trajectory forecasts
Johannes Röhrs,Kai Håkon Christensen,Lars Robert Hole,Göran Broström,Magnus Drivdal,Svein Sundby +5 more
TL;DR: In this paper, the effects of surface waves on ocean currents and drifter trajectories were investigated using in situ observations. And the authors concluded that adding wave effects in ocean model systems is likely to increase predictability of surface drifter trajectory.
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Measurement and modeling of oil slick transport
Cathleen E. Jones,Knut-Frode Dagestad,Øyvind Breivik,Benjamin Holt,Johannes Röhrs,Kai Håkon Christensen,Martine M. Espeseth,Camilla Brekke,Stine Skrunes +8 more
TL;DR: In this article, a controlled release experiment was conducted in the North Sea in June 2015, during which mineral oil emulsions of different volumetric oil fractions and a look-alike biogenic oil were released and allowed to develop naturally.
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An algorithm to detect sea ice leads by using AMSR-E passive microwave imagery
Johannes Röhrs,Lars Kaleschke +1 more
TL;DR: In this article, the authors used passive microwave imagery from the Advanced Microwave Scanning Radiometer- Earth Observation System (AMSR-E) to detect leads wider than 3 km in the entire Arctic Ocean.
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The effect of vertical mixing on the horizontal drift of oil spills
Johannes Röhrs,Knut-Frode Dagestad,Helene Asbjørnsen,Tor Nordam,Tor Nordam,Jørgen Skancke,Cathleen E. Jones,Camilla Brekke +7 more
TL;DR: In this article, the authors investigated the 3D development of a marine oil spill on the ocean surface and in the water column using numerical model simulations, including wave entrainment of oil, two alternative formulations for the droplet size and turbulent mixing.