---
title: DYAMOND Winter
---
(dyamond-winter)=
# DYAMOND Winter

**Simulation Period:**  
20 January 2020 - 1 March 2020

with 10 day spin-up period and 30 days analysis period

**Field Experiment:**  
Aligns with the [EUREC4a field study](http://eurec4a.eu/).

**Experiment:**  
Global atmosphere-only and coupled atmosphere-ocean models with a storm resolving grid spacing of 5 km or less.  
Detailed information can be found in the [DYAMOND Winter protocol (pdf)](dyamond-2nd-phase-the-winter-experimental-protocol.pdf).

Initial data for 20 Jan 2020 and SST + Sea ice boundary data is [available from DKRZ](https://swiftbrowser.dkrz.de/public/dkrz_ee0fb9db-31e9-4c9e-87eb-eaeead11bed1/DYAMOND_PHASE2/), or from ECMWF using  [this request file](DYAMOND2-MARS-request_initialdata).

## Participating models and description
The following models have participated in DYAMOND Winter:
```{toctree}
:maxdepth: 1
:glob:

Models/description/*
```

## Grid information

```{admonition} Grid information
For several models, the grid information is not included in the output. Instead it can be found in a `grid.nc` file. You can find this grid file in the `frequency` directory `fx/` of the directory structure of the data.
Use `get_dyamond_winter MODEL.*grid` to search for the grid file if needed. See the {ref}`dyamond-library` page for more information on how to get the data.
```


To associate data with the grid information, `cdo` will need a `-setgrid,GRIDFILENAME`, e.g.

```bash
cdo -sellonlatbox,0,20,40,60 -setgrid,GRIDFILENAME INFILE OUTFILE
```

## Getting the data

Since the DYAMOND data sets form hundreds of terabytes of data, only parts are available on disk.  
See the [DYAMOND data library](dyamond-library) page for instructions on how to get access to the data.

## Working with the data

You are most invited to use our systems for analyzing the data (instead of copying them around).  
Our post-processing project 1153 has some compute resources that can be used for analysis scripts.  
Therefore, we recommend to store project data under `/work/bb1153/<user-id>/` and use the temporary storage in your scratch folder `/scratch/*/<user-id>` for processing of large data sets.  
For more information about the Levante file system, its quotas and backups, see [The file systems of Levante (docs.dkrz.de)](https://docs.dkrz.de/doc/levante/file-systems.html).

For model and run descriptions see [Participating models and description](#participating-models-and-description) above.