Difference between revisions of "German Bavaria Elevation Models"
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[[Category: Online Data]][[Category: Digital Elevation Models]] | [[Category: Online Data]][[Category: Digital Elevation Models]] | ||
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[[Image:Bavaria-DGM.png|right|thumb|350px|Bavaria Elevation Model (DGM)]] | [[Image:Bavaria-DGM.png|right|thumb|350px|Bavaria Elevation Model (DGM)]] | ||
== Introduction == | == Introduction == | ||
| − | The elevation model for the German Bundesland of | + | The Bavaria / Bayern elevation models are digital terrain models (Digitales Geländemodelle, DGM) produced from data originally obtained from the Bayerischen Vermessungsverwaltung. The derived elevation models delivered with windPRO are at 1m, 5m, 20m and 50m resolution. The original model, named DGM1, is at 1m resolution. However, windPRO versions are also resampled by EMD to obtain a slightly coarser resolutions (5m and 20m) in order for the data to be operational for the larger areas needed in the context of wind farm analysis’. The 50m resolution model was added to windPRO in 2018 - and is still delivered for backward compability. Credit: Bayerischen Vermessungsverwaltung. |
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| + | The elevation model for the German Bundesland of Bavaria is a digital terrain model produced from data originally obtained from the 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 models are available at a maximum resolution of 1m, however, the highest resolution model in windPRO version is also resampled by EMD to obtain a 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 compability. Data made available by EMD represents the data status of early January 2023. | ||
=== Dataset Overview === | === Dataset Overview === | ||
| − | * '''Spatial Coverage:''' Bundesland of | + | * '''Spatial Coverage:''' Bundesland of Bayern |
| − | * '''Resolution:''' 1m, 5m and | + | * '''Resolution:''' 1m, 5m, 20m and 50m (in windPRO) |
* '''Data-type:''' [[:Category%3ADigital_Elevation_Models#What_type_of_elevation_model.3F_DEM.2C_DSM_and_DTM.3F|Digital Terrain Model (DTM)]] | * '''Data-type:''' [[:Category%3ADigital_Elevation_Models#What_type_of_elevation_model.3F_DEM.2C_DSM_and_DTM.3F|Digital Terrain Model (DTM)]] | ||
* '''Coordinate system''' | * '''Coordinate system''' | ||
** Horizontal: ETRS89/UTM32 (EPSG 25832) | ** Horizontal: ETRS89/UTM32 (EPSG 25832) | ||
** Vertical: N/A | ** Vertical: N/A | ||
| − | * '''Version:''' Data were downloaded in | + | * '''Version:''' Data were downloaded in early January 2022. |
* '''Accuracy:''' | * '''Accuracy:''' | ||
| − | ** ''Vertical:'' | + | ** ''Vertical:'' Not stated. However for the highest resolution 1m resolution dataset - which is based on aerial laser-scans - the vertical accuracy is verly likely in the order of ±0.2 to ±0.4m. |
** ''Horizontal:'' N/A | ** ''Horizontal:'' N/A | ||
== Usage Notes == | == 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! <br>Due to the large amounts of high-resolution elevation data and the tile-based storage system (> | + | # 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! <br>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 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 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. | # 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 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. | ||
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== License and Attribution == | == License and Attribution == | ||
| − | The data is based on open geo-data of | + | The data is based on open geo-data of Bavaria, released under a open-data policy on January 1st 2023.<br>When using the dataset, the please acknowledge the origin of the data, such as: <br> |
<pre> | <pre> | ||
| − | EMD/windPRO elevation model based on data from | + | EMD/windPRO elevation model based on data from Bayerischen Vermessungsverwaltung. |
</pre> | </pre> | ||
The usage conditions are available from this pdf from HVBG - [https://help.emd.dk/mediawiki/images/1/1e/Hessen_OpenData_AndLicense.pdf here]. | The usage conditions are available from this pdf from HVBG - [https://help.emd.dk/mediawiki/images/1/1e/Hessen_OpenData_AndLicense.pdf here]. | ||
== Acknowledgement == | == Acknowledgement == | ||
| − | * The | + | * 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 == | == External Links and Documentation == | ||
Revision as of 08:58, 10 January 2023
Introduction
The Bavaria / Bayern elevation models are digital terrain models (Digitales Geländemodelle, DGM) produced from data originally obtained from the Bayerischen Vermessungsverwaltung. The derived elevation models delivered with windPRO are at 1m, 5m, 20m and 50m resolution. The original model, named DGM1, is at 1m resolution. However, windPRO versions are also resampled by EMD to obtain a slightly coarser resolutions (5m and 20m) in order for the data to be operational for the larger areas needed in the context of wind farm analysis’. The 50m resolution model was added to windPRO in 2018 - and is still delivered for backward compability. Credit: Bayerischen Vermessungsverwaltung.
The elevation model for the German Bundesland of Bavaria is a digital terrain model produced from data originally obtained from the 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 models are available at a maximum resolution of 1m, however, the highest resolution model in windPRO version is also resampled by EMD to obtain a 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 compability. 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
- Horizontal: ETRS89/UTM32 (EPSG 25832)
- Vertical: N/A
- Version: Data were downloaded in early January 2022.
- Accuracy:
- Vertical: Not stated. However for the highest resolution 1m resolution dataset - which is based on aerial laser-scans - the vertical accuracy is verly 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 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 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 5-meter and 20-meter 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.
When using the dataset, the please acknowledge the origin of the data, such as:
EMD/windPRO elevation model based on data from Bayerischen Vermessungsverwaltung.
The usage conditions are available from this pdf from HVBG - 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.
