C3S ECMWF - ERA5-Land

The resolution enhancement for daily surface temperature: typical climate model 2°x2°, ERA5 0.25°x0.25 and ERA-Land 0.1°x0.1°. Credit: Copernicus Climate Change Service/ECMWF

The ERA5-Land is a reanalysis dataset consistent with atmospheric data from the ERA5 reanalysis from 1950 onward. The ERA5-Land is produced by the European Center for Medium Range Weather Forecast (ECMWF) and distributed by the Copernicus Climate Change Service (C3S).

The ERA5-Land dataset provides global, hourly, historic and high-resolution (9 km) land-focused information for a more accurate representation of water and energy cycles. ERA5-Land is updated monthly with a delay of about three months relatively to actual date.

Technical Background

“Climate reanalyses combine past observations with models to generate consistent time series of multiple climate variables. Reanalyses are among the most-used datasets in the geophysical sciences. They provide a comprehensive description of the observed climate as it has evolved during recent decades, on 3D grids at sub-daily intervals.“ Copenicus Climate Change Services

ECMWF short introductions to numerical weather prediction can be found in the following articles:

• Climate Reanalysis

• Data Assimilation

• Modeling and Prediction

Downloading Dataset

Copernicus Climate Data Store (CDS): You can access the ERA5-Land dataset via the Climate Data Store ERA5-Land hourly data from 1981 to present page.

ERA5T dataset used in Pyro-Risks Training

from pyro_risks.datasets import ERA5Land
era_land = ERA5Land()

Datasets Descriptions

DATA DESCRIPTION
Data type	Gridded
Horizontal coverage	Global
Horizontal resolution	0.1°x0.1°; Native resolution is 9 km.
Vertical coverage	From 2 m above the surface level, to a soil depth of 289 cm.
Vertical resolution	4 levels of the ECMWF surface model: Layer 1: 0 -7cm, Layer 2: 7 -28cm, Layer 3: 28-100cm, Layer 4: 100-289cm Some parameters are defined at 2 m over the surface.
Temporal coverage	January 1981 to present
Temporal resolution	Hourly
File format	GRIB
Update frequency	Monthly with a delay of about three months relatively to actual date.

Full description of the dataset variables is available on the Copernicus Climate Data Store ERA5-Land hourly data from 1981 to present page. Further descriptions on the ERA5-Land dataset can be found in the ECMWF ERA5-Land online documentation.

Acknowledgments

We acknowledge the use of data generated using Copernicus Climate Change Service information 2020.