EMD-WRF On-Demand and Custom-Area

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:

• EMD-WRF Mesocale On-Demand - Time Series

extracted when running the EMD-WRF On-Demand Services is Middle East is a high resolution mesoscale dataset modelled and provided by EMD International A/S. The data set covers mainland Turkey, Armenia, Azerbaijan, parts of Georgia, Cyprys, Jordan, Israel, Palestinian Territories, Lebanon and North-East Egypt. The model domain for EMD-WRF Middle East is shown in the figure to the right.

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, and with hourly temporal resolution. ERA Interim data from ECMWF (http://www.ecmwf.int) is the global boundary data. The timespan of the data is back to 1994 and up until the latest available boundary data (see below for the Release Schedule). Data access is via WindPRO’s user friendly interface to on-line data and requires payment of an annual subscription fee.

Release Schedule

Data is updated monthly with approximately 3 months delay defined by ERA Interim's availability. Before contacting support because of delays in the release schedule, please check ERA interim's availability on the ERA availability page. EMD-WRF Middle East 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 the following day) time stamp is required, but the last time stamp of a month in ERA interim data is 18:00 h.

Validation

The model-setup has been validated through various internal investigations on masts spatially distributed in the modelling area.
The findings (the correlations) are summarized in the datasheet available (here).

In addition to the EMD-validations, the EMD-WRF modelling setup has been evaluated in a number of external benchmarks.
We have a separate EMD-WRF Benchmark Wiki-Page that holds links to those investigations.

Dataset Parameters

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

Table: Overview of EMD-WRF Middle East 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	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/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 Middle East 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
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.	Instantaneous
cloudIce.100	kg/m^2	Parameter intended for estimating probability of icing.	Instantaneous

Required Modules/Licenses

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

• Basis
• METEO
• EMD-WRF Middle East

When the license fee is paid, you then have access to the full dataset without further cost. The price 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.