Articles | Volume 25, issue 9
https://doi.org/10.5194/hess-25-4917-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-25-4917-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A 10 km North American precipitation and land-surface reanalysis based on the GEM atmospheric model
Nicolas Gasset
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Milena Dimitrijevic
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Marco Carrera
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Bernard Bilodeau
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Ryan Muncaster
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Étienne Gaborit
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Guy Roy
Meteorological Service of Canada, Environment and Climate Change Canada, Dorval, QC, Canada
Nedka Pentcheva
Meteorological Service of Canada, Environment and Climate Change Canada, Dorval, QC, Canada
Maxim Bulat
Meteorological Service of Canada, Environment and Climate Change Canada, Dorval, QC, Canada
Xihong Wang
Meteorological Service of Canada, Environment and Climate Change Canada, Dorval, QC, Canada
Radenko Pavlovic
Meteorological Service of Canada, Environment and Climate Change Canada, Dorval, QC, Canada
Franck Lespinas
Meteorological Service of Canada, Environment and Climate Change Canada, Dorval, QC, Canada
Dikra Khedhaouiria
Meteorological Research Division, Environment and Climate Change Canada, Dorval, QC, Canada
Juliane Mai
Civil and Environmental Engineering, University of Waterloo, Waterloo, ON, Canada
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Latest update: 10 Jul 2025
Short summary
In this paper, we highlight the importance of including land-data assimilation as well as offline precipitation analysis components in a regional reanalysis system. We also document the performance of the first multidecadal 10 km reanalysis performed with the GEM atmospheric model that can be used for seamless land-surface and hydrological modelling in North America. It is of particular interest for transboundary basins, as existing datasets often show discontinuities at the border.
In this paper, we highlight the importance of including land-data assimilation as well as...