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The DYAMOND Initiative

Simulation examples of the DYAMOND Initiative

Figure: Simulation examples of the DYAMOND initiative, phase 0 (simulated day Aug 4th 2016). Can you tell which one is observation? By clicking on the image you can get a larger version (attention 20 MB)



  • The Initial atmospheric state for DYAMOND Phase 2 is available from DKRZ now.
  • The experimental protocol for the second set of DYAMOND experiments by Daniel Klocke, Tomoki Miyakawa, et al. is available online.
  • From 19 to 21 June 2019, the second DYAMOND Workshop and Hackathon took place at Atrium Hotel, Mainz, Germany.
  • From 20 to 21 August 2018, scientists and programmers met for the first joint DYAMOND Hackathon. It was dealing with methods and techniques for the analysis of global, cloud-resolving simulations within the project DYAMOND.

 Further news are published within our Newsletter of ESiWACE and ESiWACE2.



DYAMOND stands for DYnamics of the Atmospheric general circulation Modeled On Non-hydrostatic Domains. This initiative project describes a framework for the intercomparison of an emerging class of atmospheric circulation models that, through their resolution of the major modes of atmospheric heat transport, endeavor to represent the most important scales of the full three-dimensional fluid dynamics of the atmospheric circulation.

The idea of DYAMOND arose in October 2017 and started as a joint initiative between the Max Planck Institute for Meteorology (MPI-M, Bjorn Stevens) and University of Tokyo (Masaki Satoh). Further impulse was given through the involvement of US participants (Chris Bretherton, University of Washington), the support of Deutscher Wetterdienst (DWD) through the Hans Ertel Centre for Weather Research (HErZ) project (Daniel Klocke). Within the scope of the ESiWACE project, the German Climate Computing Center (DKRZ) agreed to host the output and serve as an analysis hub for the community (Joachim Biercamp, Philipp Neumann).

DYAMOND addresses two main questions:

  • How sensitive are the simulations to a particular implementation?
  • What are performance and analysis bottle necks associated with global storm-resolving models?

Due to the joint interest in high-resolution simulations, ESiWACE strongly supports and interacts with DYAMOND.


Phase 0

The DYAMOND protocol (pdf) specifies a simulation of forty days and forty nights, beginning at 1 August 2016, using global models with a storm resolving grid spacing of 5 km or less. As initial and boundary data, daily sea-surface temperatures as well as global meteorological analysis taken from the European Center for Medium Range Weather Forecasts (ECMWF) are provided. The DYAMOND protocol was kept as simple as possible to encourage participation and ensure a fast turn-around.
Nine different groups from six national entities across three continents submitted results and demonstrated that such simulations are nowadays doable.

Participating models are listed below along with the models' main scientific/technical contact.

Model Contact Person

Ryosuke Shibuya


Initial Data  for 1 August 2016
A IFS grib file with initial data for 1 August 2016 is provided here. To process the data, you may use cdo or eccodes.
A NetCDF file, basically equivalent with the grib input, is provided here.
Alternatively, the initial data can be directly retrieved from the MARS database at ECMWF using this request.
Data for Sea Surface Temperature and Sea Ice
IFS data (7 day means) are provided here.


Phase 2

The experimental protocol for a second set of experiments under northern Hemisphere winter conditions.

A IFS grib file with initial data for 20 Jan 2020 is available from DKRZ. To process the data, you may use cdo or eccodes.
A NetCDF file, basically equivalent with the grib input (cdo -f nc copy), is provided at the same location as the grb.
Alternatively, the initial data can be directly retrieved from the MARS database at ECMWF with this request file.

General contact

To scope out details on the work, interested groups please contact the .

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