This confluence page provides a data catalogue for the SUMMIT 1.4 km NDJF seasonal run performed on the Oak Ridge supercomputer, which serves as a prototype dataset for the Destination Earth project.

Temporal resolution

The output is at 3 hourly resolution. For the purposes of this sample, steps [0, 3, 6, 9, 12, 15, 18, 21, 24, 27] have been made available. The run start date and time is 2018-11-01, 00:00:00.

More model steps and output variables will be made available in due course.

Spatial resolution

The output is provided on one of two types of horizontal grid, both of which correspond to approximately 1.4 km horizontal resolution:

• O8000: ECMWF octahedral (reduced) Gaussian grid with 8000 latitude lines between the pole and equator (global)
• T_CO7999: ECMWF spherical harmonics with 7999 spectral components (global)

The grid type for each group of parameters is specified below.

To mirror the output resolution of the HRES and retrieve data at T_CO1279, O1280 or 0.1° x 0.1° lat/long grid, the data on the T_CO7999 grid can be truncated and/or regridded. This is achieved using the following keywords:

• 'truncation' : '1279'

• 'grid' : 'O1280'

• 'grid' : '0.1/0.1'

This will improve the download time of the spectral data but reduce the resolution of the data.

Output fields

Surface fields

The parameters at surface level are provided on the O8000 grid and are as follows:

Model level fields

The parameters on model levels (1 to 137; with model level 137 representing the lowest height), on the O8000 grid are as follows:

The parameters on model levels (1 to 137; with model level 137 representing the lowest height), on the T_CO7999 grid are as follows:

Pressure level fields

The parameters on pressure levels (1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000), on the O8000 grid are as follows:

The parameters on pressure levels (1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000), on the T_CO7999 grid are as follows: