German Bavaria Elevation Models
Introduction
The elevation models for the German Bundesland of Bayern (Bavaria) are digital terrain models (DTM/DGMs) produced from official and open geodata. The 1m grid resolution source data is produced and delivered by the Bayerischen Vermessungsverwaltung. Four elevation models are delivered with windPRO: 1m, 5m, 20m and 50m grid resolutions. The original model is available at a maximum resolution of 1m, however, the models for windPRO are also resampled by EMD to obtain slightly coarser resolutions: 5m and 20m. This is done in order for the data to be operational for the larger domains needed in the context of wind farm analysis and wind flow modelling. The 1m grid resolution data is intended for photomontage modelling. The 50m resolution model was added to windPRO in 2018 - and is still delivered for backward compatibility. Data made available by EMD represents the data status of early January 2023.
Dataset Overview
- Spatial Coverage: Bundesland of Bayern
- Resolution: 1m, 5m, 20m and 50m (in windPRO)
- Data-type: Digital Terrain Model (DTM)
- Coordinate system - in original data
- Horizontal (for 1m, 5m and 20m grid resolution): ETRS89/UTM32 (EPSG 25832)
- Horizontal (for 50m grid resolution): Gauss-Kruger - Zone 3 (EPSG 31468)
- Vertical: N/A
- Version: Data were downloaded in early January 2023.
- Accuracy:
- Vertical: Not stated. However, for the highest resolution 1m grid dataset (based on aerial laser-scans) the vertical accuracy is very likely in the order of ±0.2 to ±0.4m.
- Horizontal: N/A
Usage Notes
- Download and processing time is in the order of (a few) minutes for the high-resolutions dataset (1m and 5m grid) - so please be patient!
Due to the large amounts of high-resolution elevation data and the tile-based storage system (>70000 tiles each 1km x 1km), you will experience that downloading the data for a site may last a few minutes. If this is a problem for you, please consider downloading 'smaller' areas or downloading the coarser 20m or 50m resolution data. - Please note that for the 1-meter grid - the downloaded area is limited to 5 km x 5 km to keep the files at a usable size. For the 5-meter grid - the downloaded area is limited to 20 km x 20 km. The data within the elevation object may be extended with coarser data for a bigger area if needed.
Availability from within WindPRO
The data are available directly from within windPRO in 1m, 5m, 20m and 50m grid resolution. The data can be accessed from the online-services in the following objects:
- Line Object (with purpose to height contour lines)
- Elevation Grid Object
License and Attribution
The data is based on open geo-data of Bavaria, released under a open-data policy on January 1st 2023 (CC-BY-40).
When using the dataset, the please acknowledge the origin of the data, such as:
EMD/windPRO elevation model based on data from Bayerischen Vermessungsverwaltung. Source: Bayerische Vermessungsverwaltung – www.geodaten.bayern.de
The usage conditions are available from this page from the Bavarian Surveying Administration (in German language) - here.
Acknowledgement
- The Bayerischen Vermessungsverwaltung are thanked for producing this digital elevation dataset – and disseminating it in the public domain and thus for aiding the development of renewable energy and wind energy in particular.
External Links and Documentation
- Site with description of the elevation model (in German language) - HERE
- Info and license for the 50m grid data from 2018 for Bavaria (Bayern) - HERE - in German Language
