Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/gmd-2017-116
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Model description paper
01 Jun 2017
Review status
This discussion paper is under review for the journal Geoscientific Model Development (GMD).
Online dynamical downscaling of temperature and precipitation within the iLOVECLIM model (version 1.1)
Aurélien Quiquet1, Didier M. Roche1,2, Christophe Dumas1, and Didier Paillard1 1Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
2Earth and Climate Cluster, Faculty of Earth and Life Sciences, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
Abstract. In this paper, we present the inclusion of an online dynamical downscaling of heat and moisture within the model of intermediate complexity iLOVECLIM v1.1. We describe the followed methodology to generate temperature and precipitation fields on a 40 km × 40 km Cartesian grid of the Northern Hemisphere from the T21 native atmospheric model grid. Our scheme is non grid-specific and conserves energy and moisture. We show that we are able to generate a high resolution field which presents a spatial variability in better agreement with the observations compared to the standard model. Whilst the large-scale model biases are not corrected, for selected model parameters, the downscaling can induce a better overall performance compared to the standard version on both the high-resolution grid and on the native grid. Foreseen applications of this new model feature includes ice sheet model coupling and high-resolution land surface model.

Citation: Quiquet, A., Roche, D. M., Dumas, C., and Paillard, D.: Online dynamical downscaling of temperature and precipitation within the iLOVECLIM model (version 1.1), Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2017-116, in review, 2017.
Aurélien Quiquet et al.
Aurélien Quiquet et al.
Aurélien Quiquet et al.

Viewed

Total article views: 270 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
202 58 10 270 4 19

Views and downloads (calculated since 01 Jun 2017)

Cumulative views and downloads (calculated since 01 Jun 2017)

Viewed (geographical distribution)

Total article views: 270 (including HTML, PDF, and XML)

Thereof 270 with geography defined and 0 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 26 Jul 2017
Publications Copernicus
Download
Short summary
Earth system models of intermediate complexity have generally a simplified model physics and a coarse model resolution. In this work we present the inclusion of an online dynamical downscaling of temperature and precipitation in such a model. This downscaling explicitly takes into account sub-grid topography. With this new model functionality we are able to simulate temperature and precipitation on a 40 km grid for the whole Northern Hemisphere from the native model resolution.
Earth system models of intermediate complexity have generally a simplified model physics and a...
Share