All ERA5 datasets have been migrated to Zarr v3 with improved chunking. Previous dataset versions are still available, but we recommend using the new ones.
Future updates will only apply to Zarr v3 datasets, including ERA5 monthly updates.

ERA5 monthly data on pressure levels

This dataset is a Zarr mirror of ECMWF’s ERA5 monthly averaged data on pressure levels from 1940 to present.

It is designed to offer a fast, highly accessible alternative for querying ERA5 presure levels' monthly averaged data.

The dataset employs a spatio-temporal chunking scheme of 10 years × 60° latitude × 60° longitude. This corresponds to an array chunk shape of 120 (valid_time) × 240 (latitude) × 240 (longitude).

How to download the data

This Python snippet includes the token directly in the URL.

1import xarray as xr
2
3xr.open_dataset(
4    "https://edh:<your API key>@data.earthdatahub.destine.eu/era5/era5-pressure-levels-monthly-v0.zarr",
5    chunks={},
6    engine="zarr",
7)

Variables

Short NameUnitsDescription
cc
(0 - 1)

Fraction of cloud cover

ciwc
kg kg-1

Specific cloud ice water content

clwc
kg kg-1

Specific cloud liquid water content

crwc
kg kg-1

Specific rain water content

cswc
kg kg-1

Specific snow water content

d
s-1

Divergence

o3
kg kg-1

Ozone mass mixing ratio

pv
K m2 kg-1 s-1

Potential vorticity

q
kg kg-1

Specific humidity

r
%

Relative humidity

t
K

Temperature

u
m s-1

U component of wind

v
m s-1

V component of wind

vo
s-1

Vorticity (relative)

w
Pa s-1

Vertical velocity

z
m2 s-2

Geopotential

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