Poland Elevation Model

Coverage of the Poland DTM - here shown as polygons for the about 65000 tiles each 2.2km x 2.35km forming the DTM.

Note: This dataset is currently (2021-12-30) being integrated into windPRO.

Introduction

The Poland Elevation Model is a digital terrain model released from the Head Office of Geodesy and Cartography (Główny Urząd Geodezji i Kartografii, GUGiK), Poland. The dataset is an accurate digital terrain model (DTM) developed as a part of a multi-year data-collection process - with the DTM in windPRO holding data from years 2010-2018. The dataset is primarily made from airborne laser-scans and stereoscopic measurements. The original data is stored as a 1m grid - and in approximately 64000 individual tiles - each sized 2.2km x 2.35km. Two Polish elevation models are delivered with windPRO: one at 5m resolution and one at 20m resolution. As the original model is available at resolution of 1.0m, however, the highest resolution model in windPRO version is resampled by EMD to obtain a slightly coarser resolution - 5m. 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 resampling is made based on 1m data using a bi-linear interpolation algorithm. Data made available by EMD represents the data status of December 2021.

Dataset Overview

• Spatial Coverage: Poland
• Resolution: 5m and 20 m in windPRO (original data in 1.0m grid resolution)
• Data-type: Digital Terrain Model (DTM)
• Coordinate systems:
  • Horizontal: Poland CS92 / ETRS89 - EPSG:2180
  • Vertical: PL-KRON86-NH
• Version: Data downloaded in December 2021
• Accuracy:
  • The accuracy depends on the data-source and have not been explicitly stated. However, typical accuracies are less than 0.3-0.5m for LiDAR data and less than 1.0m-3.0m for stereo-correlation data.

Availability from within WindPRO

The data are available directly from within windPRO in 5m 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

Acknowledgement

• The Head Office of Geodesy and Cartography (Główny Urząd Geodezji i Kartografii, GUGiK) and the Polish public are thanked for producing this digital elevation dataset – and disseminating it in the public domain and thus for aiding the development of renewable energy.

External Links

1. Description of the elevation model - at the Head Office of Geodesy and Cartography (Główny Urząd Geodezji i Kartografii, GUGiK) - HERE
2. Polish geodata portal (with a lot of nice geodata) - HERE