ERA5

ERA5 is the fifth generation of ECMWF atmospheric reanalysis of the global climate, produced by the Copernicus Climate Change Service (C3S). It provides hourly estimates of atmospheric, land, and oceanic climate variables from 1990 to present.

Data Access

• Global coverage at 0.25° resolution (720x1440 grid)

• Hourly temporal resolution

• Real-time data access via REST API

ERA5 data is available with approximately 5-7 days delay from the present.

Technical Specifications

Available Weather Parameters

ERA5 uses standardized variable naming conventions. For full details on the naming structure, see Weather Variable Naming.

Code	API Name	Description	Units
2t	air_temperature_at_height_level_2m	Air temperature at 2m	Kelvin
2d	dew_point_temperature_at_height_level_2m	Dew point temperature at 2m	Kelvin
sp	surface_air_pressure	Surface Pressure	Pa
msl	air_pressure_at_mean_sea_level	Mean Sea-level Pressure	Pa
skt	surface_temperature	Surface Temperature	Kelvin
10si	wind_speed_at_height_level_10m	Horizontal wind speed at 10m	m s⁻¹
10wdir	wind_direction_at_height_level_10m	Horizontal wind direction at 10m	Degrees true
100si	wind_speed_at_height_level_100m	Horizontal wind speed at 100m	m s⁻¹
100wdir	wind_direction_at_height_level_100m	Horizontal wind direction at 100m	Degrees true
10fg	wind_speed_of_gust_at_height_level_10m_max	Maximum wind gust at 10m	m s⁻¹
tcc	cloud_area_fraction_at_entire_atmosphere	Total Cloud Cover	%
lcc	cloud_area_fraction_at_entire_atmosphere_low_type	Low Cloud Cover	%
mcc	cloud_area_fraction_at_entire_atmosphere_medium_type	Medium Cloud Cover	%
hcc	cloud_area_fraction_at_entire_atmosphere_high_type	High Cloud Cover	%
ssrd	surface_downwelling_shortwave_flux_sum_1h	Surface solar downward irradiance	J m⁻²
fdir	surface_direct_downwelling_shortwave_flux_sum_1h	Direct solar radiation at the surface	J m⁻²
ssr	surface_net_downward_shortwave_flux_sum_1h	Net surface solar radiation	J m⁻²
tp	precipitation_amount_sum_1h	Total Precipitation	mm m⁻²
ptype	predominant_precipitation_type_at_surface	Precipitation Type	categorical
cape	atmosphere_convective_available_potential_energy	CAPE	J kg⁻¹
sst	sea_surface_temperature	Sea Surface Temperature	Kelvin

Data Availability

Dataset	Spatial Extent	Temporal Extent
ERA5	Global, 0.25° resolution (720x1440 grid)	1990-01-01 - today