EMD-WRF South Korea (ERA-Interim)

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EMD-WRF South Korea is a high resolution mesoscale dataset modelled and provided by EMD International A/S. The dataset covers South Korea and parts of Japan and North Korea.

Note: This data-set requires an additional license (see below).

Dataset Description

The mesoscale model is run at a spatial resolution of 0.029°x0.029°, approximately 3x3 km, with hourly temporal resolution. ERA Interim data from ECMWF (http://www.ecmwf.int) are the global boundary data. The timespan of the data is back to 1994 up until latest available boundary data (see below on Release Schedule). Data access is via WindPRO’s user friendly interface to on-line data and payment of an annual subscription fee.

Release Schedule

Data are updated monthly with an approximate 3 months delay defined by ERA Interims availability. Before contacting support because of delays in the release schedule, please check ERA interims availability on the ERA availability page. EMD-WRF South Korea data cannot be computed before ERA interim data is available.

When downloading the most recent data, please note that the last day of the last month will be missing until the next month is added. This is because in order to compute a full day of data, the 24:00h (or 0:00 of following day) time stamp is required, but the last time stamp of a month in ERA interim data is 18:00 h.

Required modules/licenses

To access the EMD-WRF South Korea mesoscale data the following licenses/modules are required in your WindPRO setup:

  • Basis
  • EMD-WRF South Korea

When the license fee is paid, then you have access to the full data-set without further cost. The cost is available from the price-list on the EMD-homepage. Downloading of data is unrestricted for licenced users, however a "fair use" policy applies. Unlicenced users may download three months of data from any point, however multiple downloads are not allowed from the same point.

Model Domain

The model domain for EMD-WRF South Korea is shown in the figure below.

Illustration of the data coverage of the EMD-WRF South Korea dataset

Dataset Parameters

A large quantity of useful parameters are available directly in WindPRO to aid your analysis. The different parameters in the EMD-WRF South Korea dataset that are available from within WindPRO are shown in the table below.

Table: Overview of EMD-WRF South Korea Dataset Parameters (3 km grid).
Parameter Unit Description Type
time UTC time stamp
psfc hPa Pressure at site Instantaneous
msl hPa 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
wDir.x deg Wind speeds at different physical levels (x).
Heights (x): 10m, 25m, 50m, 75m, 100m, 150m, 200m
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
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/s Total Precipitation at surface 1h Average
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 South Korea data, but can be made available by clicking on the "+" button in the lower left corner of the import table.
rmol 1/m Reverse 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
cloudWater.100 </ref>[2] kg/kg Parameter intended for estimating probability of icing. Instantaneous
cloudIce.100 </ref>[2] kg/m^2 Parameter intended for estimating probability of icing. Instantaneous


  1. It is still being investigated whether this reverse 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.