EMD-WRF On-Demand

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Illustration of a EMD-Wrf Dataset in the windprospeting.com portal

Introduction

This pages holds the list of parameters available for datasets originating from the EMD-WRF On-Demand Services - either as a time-series product or as a custom-area run from a user-defined area.
You can find more information about the services at the following links:

  1. Time-Series - On-Demand - for 'virtual met-masts'
  2. Spatial Areas - On-Demand - for time-series within a larger domain and spatial climatic data

There is also a webinar describing the content of the different EMD-Mesoscale Services - it is accessible from the EMD-Youtube Channel:

How to Order?

To get pointwise-timeseries data, you need meso-credits (one credit is worth one month of data). Credits can be ordered here:

To get meso-data for your own user-defined area, please select the area within the 'ordering' section of windPROSPECTING, then we will send you a quote:

Note:
In order to access windPROSPECTING, use either windPRO (from the 'Data' drop-down-menu) or make a 'demo'-user.
You are also very welcome to contact our sales department on email: sales@emd.dk.

Set of Standard Dataset Parameters

A large quantity of useful parameters are available directly in WindPRO to aid in your analysis.
The different parameters in each On-Demand dataset is shown in the list below.

Table: Overview of Standard EMD-WRF On-Demand Dataset Parameters (3 km grid).
Parameter Unit Description Type
time UTC time stamp
psfc Pa Pressure at site Instantaneous
msl Pa Pressure at mean sea level Instantaneous
wSpeed.x m/s Wind speeds at different physical levels (x).
Heights (x): 10m, 25m, 50m, 75m, 100m, 150m, 200m
Instantaneous
wDir.x deg Wind speeds at different physical levels (x).
Heights (x): 10m, 25m, 50m, 75m, 100m, 150m, 200m
Instantaneous
wSpeed.0-30mb m/s Wind speeds at pressure level 0-30mb. Instantaneous
wDir.0-30mb deg Wind speeds at pressure levels 0-30mb. Instantaneous
wSpeed.850hpa m/s Wind speeds at pressure level 850hPa. Instantaneous
wDir.850hpa deg Wind speeds at pressure levels 850hPa. Instantaneous
temperature.x celcius Temperatures at different heights (x)
Heights (x): 2m and 100m
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
snowDepth m Show depth (if present) Instantaneous
vis.s m Visibility at surface Instantaneous
sensHeatFlux.s w/m2 Sensible Heat Flux at surface Instantaneous
totPrecip.s kg/m^2 Total Precipitation at surface 1h Accumulated
downShortWaveFlux.s w/m2 Downward shortwave irradiance at surface 1h Average
totalCloudCover.a % Total cloud cover in atmosphere 1h Average
convCloudCover.a % Convective cloud cover in atmosphere 1h Average
Data below this line are not shown in a default import of EMD-WRF On-Demand data, but can be made available by clicking on the "+" button in the lower left corner of the import table.
4LFTX K N/A
rmol 1/m Inverse Monin-Obukhov-Length [1]
znt m Rougnhess length
sqrtTKE.x m/s Wind speed given as standard deviation in m/s. Derived from the turbulent kinetic energy (TKE).
Results available in different physical levels.
Heights (x): 10m, 25m, 50m, 75m, 100m, 150m, 200m
Instantaneous
cloudWater.100 kg/kg Parameter intended for estimating probability of icing.[2] Instantaneous
cloudIce.100 kg/m^2 Parameter intended for estimating probability of icing.[2] Instantaneous


Attribution

If data from this data-service is used within any private or public disseminations, then EMD and its data providers must be acknowledged.

Source: 
EMD-WRF On-Demand - Copyright (C) - EMD International A/S, 2019. Distribution through EMD and windPRO.
This service relies on the following data-providers: 
ERA5: Which is being developed through the Copernicus Climate Change Service (C3S) with data processing and distribution for ERA5 is carried out by ECMWF. 
ERA-Iterim: Is being developed through the European Centre for Medium-Range Weather Forecasts (ECMWF). 
MERRA-2: The Global Modeling and Assimilation Office of NASA (GMAO) for the MERRA-analysis and the GES DISC for the dissemination of MERRA. 
CFS/CFSR: NOAA / National Centers for Environmental Prediction (NCEP)

Footnotes

  1. It is still being investigated whether this inverse Monin-Obukhov-Length can be used for stability clasification.
  2. 2.0 2.1 CloudWater and cloudIcing values are extracted directly from the WRF meso-scale model and are normal output parameters of the same run as the other parameters (wind, temperature etc.). They are controlled by the WRF microphysics scheme for which Ferrier was used. For further information, please access the numerous internet resources about WRF use. EMD has not done any validation on the parameters, so they are provided as is.