Difference between revisions of "CERRA"

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{| class="wikitable"
 
{| class="wikitable"
−
|+ align="bottom"|Table: Overview of CERRA Dataset Parameters in windPRO (5.5km grid).
+
|+ align="bottom"|Table: Overview of CERRA Dataset Parameters (5.5 km grid).
−
!Parameter(s)
+
!Parameter
 +
!Unit
 
!Description
 
!Description
−
!Unit
+
!Type
 +
|-
 +
|time
 +
|
 +
|UTC time stamp (YYYY-MM-DD HH:MM)
 +
|
 +
|-
 +
|wSpeed.x
 +
|m/s
 +
|Wind speeds at different heights above ground (x).<br>Heights (x): 15,50,75,100,150,200,300,500m
 +
|Instantaneous
 +
|-
 +
|wDir.x
 +
|deg
 +
|Wind directions at different heights above ground (x).<br>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. <br>Heights (x): 15,50,75,100,150,200,300,500m
 +
|Instantaneous
 
|-
 
|-
−
|time
+
|press.x
−
|UTC time stamp
+
|Pa
−
|YYYY-MM-DD HH:MM
+
|Pressure at different heights above ground (x).<br>Heights (x): 15,50,75,100,150,200,300,500m
 +
|Instantaneous
 
|-
 
|-
−
|temp.2m
+
|temp.x
−
|Temperature in 2m height
+
|celcius
−
|degC
+
|Temperature at different heights above ground (x).<br>Heights (x): 15,50,75,100,150,200,300,500m
 +
|Instantaneous
 
|-
 
|-
−
|rh.2m
+
|rh.x
−
|Relative humidity in 2m height
 
 
|%
 
|%
 +
|Relative humidity at different heights above ground (x).<br>Heights (x): 15,50,75,100,150,200,300,500m
 +
|Instantaneous
 
|-
 
|-
−
|press.2m
+
|cloudWater.x
−
|Surface air pressure
+
|mg/kg
−
|Pa
+
|Cloud water content at different heights above ground (x).<br>Heights (x): 15,50,75,100,150,200,300,500m
 +
|Instantaneous
 
|-
 
|-
−
|gust.10m
+
|cloudIce.x
−
|Wind gust (maximum wind) in 10m agl
+
|mg/kg
−
|m/s
+
|Cloud icing content at different heights above ground (x).<br>Heights (x): 15,50,75,100,150,200,300,500m
 +
|Instantaneous
 
|-
 
|-
−
|ws.10m, ws.20m, ws.50m, ws.100m, ws.250m, ws.500m
+
|wSpeed.10
−
|Wind speed in 10m, 20m, 50m, 100m, 250m and 500m agl
 
 
|m/s
 
|m/s
 +
|Wind speeds at 10m.
 +
|Instantaneous
 
|-
 
|-
−
|wdir.10m, wdir.20m, wdir.50m, wdir.100m, wdir.250m, wdir.500m
+
|wDir.10
−
|Wind direction in 10m, 20m, 50m, 100m, 250m and 500m agl
 
 
|deg
 
|deg
 +
|Wind direction at 10m.
 +
|Instantaneous
 
|-
 
|-
−
|precipAcc
+
|wGust.10
−
|Accumulated total precipitation
+
|deg
−
|kg/m2/h
+
|Wind gust at 10m.
 +
|Instantaneous
 
|-
 
|-
−
|snowAcc
+
|temp.2
−
|Total accumulated solid precipitation (snow+graupel+hail)
+
|celcius
−
|kg/m2/h
+
|Temperatures at 2m
 +
|Instantaneous
 
|-
 
|-
−
|lwcss
+
|rh.2
−
|Snow Water Equivivalent (SWE)
+
|%
−
|kg/m2/h
+
|Relative humidity at 2m
 +
|Instantaneous
 
|-
 
|-
−
|PBL
+
|psfc
−
|Planetary boundary layer height
+
|Pa
 +
|Pressure at site
 +
|Instantaneous
 +
|-
 +
|msl
 +
|Pa
 +
|Pressure at mean sea level
 +
|Instantaneous
 +
|-
 +
|waterTemp
 +
|celcius
 +
|Water temperature
 +
|Instantaneous
 +
|-
 +
|soilTemp.0-10cm
 +
|celcius
 +
|The temperature in the upper 10 cm of the soil
 +
|Instantaneous
 +
|-
 +
|relHumidity.2
 +
|%
 +
|Relative humidity in height 2m above ground level
 +
|Instantaneous
 +
|-
 +
|z0
 
|m
 
|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
 +
|-
 +
|zust
 +
|m/s
 +
|U-start (friction velocity)
 +
|Instantaneous
 
|}
 
|}
 
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Revision as of 14:22, 25 October 2022

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
    (source data dates back to 1984 from Norwegian Meteorological Institute)
  • 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.

Table: Overview of CERRA Dataset Parameters (5.5 km grid).
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
waterTemp celcius Water temperature Instantaneous
soilTemp.0-10cm celcius The temperature in the upper 10 cm of the soil Instantaneous
relHumidity.2 % Relative humidity in height 2m above ground 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
zust m/s U-start (friction velocity) Instantaneous

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

External Links and References

Acknowledgement and Credits

Retrieved from "http://help.emd.dk/mediawiki/index.php?title=CERRA&oldid=14688"