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30 Research products, page 1 of 3

  • European Marine Science
  • Publications
  • Other research products
  • English
  • Nonlinear Processes in Geophysics (NPG)

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  • Publication . Article . Review . Other literature type . 2022
    Open Access English
    Authors: 
    B. Dubrulle; B. Dubrulle; F. Daviaud; D. Faranda; D. Faranda; D. Faranda; L. Marié; B. Saint-Michel;
    Publisher: HAL CCSD
    Country: France
    Project: ANR | EXPLOIT (ANR-16-CE06-0006)

    According to everyone's experience, predicting the weather reliably over more than 8 d seems an impossible task for our best weather agencies. At the same time, politicians and citizens are asking scientists for climate projections several decades into the future to gui...

  • Open Access English
    Authors: 
    Achim Wirth; Bertrand Chapron;
    Publisher: Copernicus Publications
    Country: France

    Abstract. Ocean dynamics is predominantly driven by the shear stress between the atmospheric winds and ocean currents. The mechanical power input to the ocean is fluctuating in space and time and the atmospheric wind sometimes decelerates the ocean currents. Building on...

  • Open Access English
    Authors: 
    Raphaël Hébert; Kira Rehfeld; Thomas Laepple;
    Project: EC | SPACE (716092), EC | GlacialLegacy (772852)

    Abstract. Characterizing the variability across timescales is important for understanding the underlying dynamics of the Earth system. It remains challenging to do so from palaeoclimate archives since they are more often than not irregular, and traditional methods for p...

  • Publication . Article . Other literature type . 2021
    Open Access English
    Authors: 
    Juan M. Restrepo; Alex Ayet; Luigi Cavaleri;
    Publisher: Copernicus Publications
    Country: France

    Abstract. We make a physical–mathematical analysis of the implications that the presence of a large number of tiny bubbles may have, when present, on the thin upper layer of the sea. In our oceanographic example, the bubbles are due to intense rain. It was found that th...

  • Open Access English
    Authors: 
    Raphael Hébert; Kira Rehfeld; Thomas Laepple;
    Project: EC | SPACE (716092), EC | GlacialLegacy (772852)

    Abstract. Characterizing the variability across timescales is important to understand the underlying dynamics of the Earth system. It remains challenging to do so from paleoclimate archives since they are more than often irregular and traditional methods to produce time...

  • Open Access English
    Authors: 
    João H. Bettencourt; Vincent Rossi; Lionel Renault; Peter H. Haynes; Yves Morel; Véronique Garçon;
    Publisher: Copernicus Publications
    Countries: France, United Kingdom

    Abstract. We apply a coupled modelling system composed of a state-of-the-art hydrodynamical model and a low-complexity biogeochemical model to an idealized Iberian Peninsula upwelling system to identify the main drivers of dissolved-oxygen variability and to study its r...

  • Open Access English
    Authors: 
    Fei Lu; Nils Weitzel; Adam H. Monahan;
    Country: Germany
    Project: NSF | Data-Driven Stochastic Mo... (1821211), NSERC

    Abstract. While nonlinear stochastic partial differential equations arise naturally in spatiotemporal modeling, inference for such systems often faces two major challenges: sparse noisy data and ill-posedness of the inverse problem of parameter estimation. To overcome t...

  • Publication . Article . Other literature type . 2018 . Embargo End Date: 29 Nov 2016
    Open Access English
    Authors: 
    Rahel Vortmeyer-Kley; Ulf Gräwe; Ulrike Feudel;
    Publisher: Göttingen : Copernicus GmbH
    Country: Germany

    Abstract. Since eddies play a major role in the dynamics of oceanic flows, it is of great interest to detect them and gain information about their tracks, their lifetimes and their shapes. We present a Lagrangian descriptor based on the modulus of vorticity to construct...

  • Publication . Research . Other literature type . Article . 2018
    Open Access English
    Authors: 
    Kira Rehfeld; Norbert Marwan; Jobst Heitzig; Jürgen Kurths;
    Publisher: Copernicus Publications
    Country: Germany

    Geoscientific measurements often provide time series with irregular time sampling, requiring either data reconstruction (interpolation) or sophisticated methods to handle irregular sampling. We compare the linear interpolation technique and different approaches for anal...

  • Open Access English
    Authors: 
    Inga Monika Koszalka; L. Ceballos; Annalisa Bracco;
    Country: Germany
    Project: NSF | Collaborative Research: N... (0928495)

    The role played by wind-forced anticyclones in the vertical transport and mixing at the ocean mesoscale is investigated with a primitive-equation numerical model in an idealized configuration. The focus of this work is to determine how the stratification impacts such tr...