Cited by 83Meteorological Phenomena and SimulationsClimate variability and modelsAtmospheric aerosols and clouds

Process‐Based Climate Model Development Harnessing Machine Learning: II. Model Calibration From Single Column to Global

Open access
Hourdin, Frédéric, Williamson, Daniel, Rio, Catherine, Couvreux, Fleur, Roehrig, Romain, Villefranque, Najda, Musat, Ionela, Fairhead, Laurent +2 more·2021·Journal of Advances in Modeling Earth Systems

Published version of a preprint

Abstract

We demonstrate a new approach for climate model tuning in a realistic situation. Our approach, the mathematical foundations and technical details of which are given in Part I, systematically uses a single‐column configuration of a global atmospheric model on test cases for which reference large‐eddy‐simulations are available. The space of free parameters is sampled running the single‐column model from which metrics are estimated in the full parameter space using emulators. The parameter space is then reduced by retaining only the values for which the emulated metrics match large eddy simulations within a given tolerance to error. The approach is applied to the 6A version of the LMDZ model which results from a long investment in the development of physics parameterizations and by‐hand tuning. The boundary layer is revisited by increasing the vertical resolution and varying parameters that were kept fixed so far, which improves the representation of clouds at process scale. The approach allows us to automatically reach a tuning of this modified configuration as good as that of the 6A version. We show how this approach helps accelerate the introduction of new parameterizations. It allows us to maintain the physical foundations of the model and to ensure that the improvement of global metrics is obtained for a reasonable behavior at process level, reducing the risk of error compensations that may arise from over‐fitting some climate metrics. That is, we get things right for the right reasons.

Integrity signals

Registry

Crossref · 10.1029/2020ms002225

Cites

43 of 43 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The targets of the by-hand tuning of IPSL-6A were translated into 14 scalar metrics, 11 for TOA radiative fluxes and 3 for rainfall distribution.

    “Following a previous study (45), the targets of the by-hand tuning of the IPSL-6A configuration were translated into 14 scalar metrics. Among them, 11 relate to annual mean top-of-atmosphere (TOA) radiative fluxes, taking averages over the globe or specific regions and decomposing between solar and thermal radiation or clear sky fluxes and radiative effect of clouds, while three metrics relate to”
  • Preconditioning by a multi-wave tuning of a single-column version of the model against explicit high-resolution simulations of cloud scenes may significantly accelerate the tuning process.

    “We showed in another study how preconditioning by a multi-wave tuning of a single-column version of the model against explicit high-resolution simulations of cloud scenes may significantly accelerate the tuning process (25, 45).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Hourdin, F., Williamson, D., Rio, C., Couvreux, F., Roehrig, R., Villefranque, N., Musat, I., Fairhead, L., Diallo, F. B., & Volodina, V.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • University of Exeter (GB)
  • The Alan Turing Institute (GB)
Corresponding author
Hourdin, Frédéric
Venue
Journal of Advances in Modeling Earth Systems
Published
2021-06
Volume
13
Issue
6
Pages
e2020MS002225
ISSN
1942-2466 (ISSN-L)
OpenAlex
W3047510468
Cited by
83
References
43
Citations by year
2026: 6 · 2025: 10 · 2024: 15 · 2023: 18 · 2022: 21 · 2021: 12 · 2020: 1
FWCI
4.25
Type
journal article
Language
en
Open access
Locations
  • Journal of Advances in Modeling Earth Systems (publishedVersion, cc-by-nc-nd)
  • HAL (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Alan Turing Institute (N510129)
  • Agence Nationale de la Recherche (ANR-16-CE01-0010)
  • Centre National de la Recherche Scientifique
  • Grand Équipement National De Calcul Intensif
  • Engineering and Physical Sciences Research Council (N510129, EP/N510129/1)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
Keywords
climate model tuning, model calibration, single-column model, surrogate models, emulator, parameter space reduction, large eddy simulation, boundary layer parameterization, cloud representation, physics parameterization, error compensation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review