ERA5 hourly data on single levels, ocean-wave fields

Here we propose a subset of ERA5 data for ocean-wave quantities belonging to ERA5 hourly data on single levels. The data are available from 1940 until the last closed month and updated monthly and are regridded to a regular lat-lon grid of 0.5 degrees.

They are presented as a zarr archive optimised for time analysis.

How to access

It's required to before running the code snippet below.

1import xarray as xr
2
3xr.open_dataset(
4    "https://data.earthdatahub.destine.eu/era5/reanalysis-era5-single-levels-ocean-v0.zarr",
5    storage_options={"client_kwargs":{"trust_env":True}},
6    chunks={},
7    engine="zarr",
8)
9

Variables

Short Name	Units	Description
cdww	dimensionless	Coefficient of drag with waves
dwi	degrees	10 metre wind direction
mp2	s	Mean zero-crossing wave period
mwd	Degree true	Mean wave direction
mwp	s	Mean wave period
pp1d	s	Peak wave period
rhoao	kg m^-3	Air density over the oceans
swh	m	Significant height of combined wind waves and swell
wind	m s^-1	10 metre wind speed
hmax	m	Envelop-maximum individual wave height
mdts	degrees	Mean direction of total swell
mdww	degrees	Mean direction of wind waves
mp1	s	Mean wave period based on first moment
mpts	s	Mean period of total swell
mpww	s	Mean period of wind waves
msqs	dimensionless	Mean square slope of waves
mwd1	degrees	Mean wave direction of first swell partition
mwd2	degrees	Mean wave direction of second swell partition
mwd3	degrees	Mean wave direction of third swell partition
mwp1	s	Mean wave period of first swell partition
mwp2	s	Mean wave period of second swell partition
mwp3	s	Mean wave period of third swell partition
p1ps	s	Mean wave period based on first moment for swell
p1ww	s	Mean wave period based on first moment for wind waves
p2ps	s	Mean wave period based on second moment for swell
p2ww	s	Mean wave period based on second moment for wind waves
phiaw	Numeric	Normalized energy flux into waves
phioc	Numeric	Normalized energy flux into ocean
tauoc	Numeric	Normalized stress into ocean
wmb	m	Model bathymetry
wstar	m s^-1	Free convective velocity over the oceans
dwps	radians	Wave spectral directional width for swell
dwww	radians	Wave spectral directional width for wind waves
shts	m	Significant height of total swell
shww	m	Significant height of wind waves
swh1	m	Significant wave height of first swell partition
swh2	m	Significant wave height of second swell partition
swh3	m	Significant wave height of third swell partition
tmax	s	Period corresponding to maximum individual wave height
wdw	radians	Wave spectral directional width
wsk	dimensionless	Wave spectral kurtosis
wsp	dimensionless	Wave spectral peakedness
wss	Numeric	Wave Spectral Skewness