Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

ECLand: The ECMWF Land Surface Modelling System

Version 1 : Received: 17 April 2021 / Approved: 19 April 2021 / Online: 19 April 2021 (13:23:53 CEST)

A peer-reviewed article of this Preprint also exists.

Boussetta, S.; Balsamo, G.; Arduini, G.; Dutra, E.; McNorton, J.; Choulga, M.; Agustí-Panareda, A.; Beljaars, A.; Wedi, N.; Munõz-Sabater, J.; de Rosnay, P.; Sandu, I.; Hadade, I.; Carver, G.; Mazzetti, C.; Prudhomme, C.; Yamazaki, D.; Zsoter, E. ECLand: The ECMWF Land Surface Modelling System. Atmosphere 2021, 12, 723. Boussetta, S.; Balsamo, G.; Arduini, G.; Dutra, E.; McNorton, J.; Choulga, M.; Agustí-Panareda, A.; Beljaars, A.; Wedi, N.; Munõz-Sabater, J.; de Rosnay, P.; Sandu, I.; Hadade, I.; Carver, G.; Mazzetti, C.; Prudhomme, C.; Yamazaki, D.; Zsoter, E. ECLand: The ECMWF Land Surface Modelling System. Atmosphere 2021, 12, 723.

Journal reference: Atmosphere 2021, 12, 723
DOI: 10.3390/atmos12060723

Abstract

The land-surface developments of the European Centre for Medium-range Weather Forecasts (ECMWF) are based on the Carbon-Hydrology Tiled Scheme for Surface Exchanges over Land (CHTESSEL) and form an integral part of the Integrated Forecasting System (IFS), supporting a wide range of global weather, climate and environmental applications. In order to structure, coordinate and focus future developments and benefit from international collaboration in new areas, a flexible system named ECLand which would facilitates modular extensions to support numerical weather prediction (NWP) and society-relevant operational services, e.g. Copernicus, is presented . This paper introduces recent examples of novel ECLand developments on (i) vegetation, (ii) snow, (iii) soil, (iv) open water/lake (v) river/inundation, and (vi) urban areas. The developments are evaluated separately with long-range, atmosphere-forced surface offline simulations, and coupled land-atmosphere-ocean experiments. This illustrates the benchmark criteria for assessing both, process fidelity with regards to land surface fluxes and reservoirs of the water-energy-carbon exchange on the one hand, and on the other hand the requirements of ECMWF’s NWP, climate and atmospheric composition monitoring services using an Earth system assimilation prediction framework.

Keywords

Land-surface modelling system; hydrology; carbon; surface energy balance; open water; snow

Subject

EARTH SCIENCES, Atmospheric Science

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