CERRA
Revision as of 11:44, 27 December 2022 by Morten (talk | contribs) (→External Links and References)
Spatial domain for the CERRA mesoscale data in windPRO (we cover approx. 300km from the coastline). Image showing average wind speeds at 100m from 2012-2012 - taken from the https://www.windprospecting.com platform.
Introduction
CERRA, is a high resolution hindcast dataset provided by Copernicus. The model holds data at 5.5km resolution and covers central Europe.
Dataset Overview
- Content: Limited feature and spatial-domain subset of the CERRA mesoscale dataset
(we provide about 973.000 nodes in a distance of approx. 300km from the coastlines). - Spatial resolution: 5.5km
- Temporal resolution: Timestep 1 hour
- Coverage: See the map to the right
- Period: In windPRO: 20+ years of data from 1999-01-01 to 2021-12-31
- Update schedule: Unknown (but is is our expectation that data is updated with a 3-4 month of delay from current date, due to ERA5 availability and computational demands).
We will update this dataset when more recent data becomes available.
Usage Notes
Dataset Parameters
A total of 80 parameters are available from the CERRA mesoscale data-subset in windPRO.
| Parameter | Unit | Description | Type |
|---|---|---|---|
| time | UTC time stamp (YYYY-MM-DD HH:MM) | ||
| wSpeed.x | m/s | Wind speeds at different heights above ground (x). Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| wDir.x | deg | Wind directions at different heights above ground (x). Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| sqrtTKE.x | m/s | Wind speed given as standard deviation in m/s. Derived from the turbulent kinetic energy (TKE) at different heights above ground (x). Use with caution, and avoid use for site assessment and loads as variability is underestimated. Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| press.x | Pa | Pressure at different heights above ground (x). Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| temp.x | celcius | Temperature at different heights above ground (x). Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| rh.x | % | Relative humidity at different heights above ground (x). Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| cloudWater.x | mg/kg | Cloud water content at different heights above ground (x). Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| cloudIce.x | mg/kg | Cloud icing content at different heights above ground (x). Heights (x): 15,50,75,100,150,200,300,500m |
Instantaneous |
| wSpeed.10 | m/s | Wind speeds at 10m. | Instantaneous |
| wDir.10 | deg | Wind direction at 10m. | Instantaneous |
| wGust.10 | deg | Wind gust at 10m. | Instantaneous |
| temp.2 | celcius | Temperatures at 2m | Instantaneous |
| rh.2 | % | Relative humidity at 2m | Instantaneous |
| psfc | Pa | Pressure at site | Instantaneous |
| msl | Pa | Pressure at mean sea level | Instantaneous |
| z0 | m | Rougnhess length | Instantaneous |
| totalCloudCover | % | Total cloud cover in atmosphere | 1h Average |
| totPrecip | kg/m^2 | Total Precipitation at surface | 1h Accumulated |
| sensHeatFlux | w/m2 | Sensible Heat Flux at surface | Instantaneous |
| momFluxU | N m**-2 | Instantaneous northward turbulent surface stress | Instantaneous |
| momFluxV | N m**-2 | Instantaneous eastward turbulent surface stress | Instantaneous |
| zust | m/s | U-star (friction velocity) | Instantaneous |
| ssr | w/m2 | Surface net solar radiation | 1h Accumulated |
| ssrc | w/m2 | Surface net solar radiation, clear sky | 1h Accumulated |
| ssrd | w/m2 | Surface solar radiation downwards | 1h Accumulated |
License and Attribution
Source: Distribution through EMD and windPRO - EMD International A/S, 2022. License: NLOD 2.0 and CC-BY-40.
Required windPRO License and Modules
This dataset can be accessed from the most recent version of windPRO given that you hold an active service agreement and a license to the following modules:
- BASIS
- METEO