A global product of 150-m urban building height based on spaceborne lidar
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View abstract on PubMed
Summary
This summary is machine-generated.A new global urban building height dataset (150m resolution) was created using GEDI lidar and satellite data. This dataset offers detailed 3D urban structure information for diverse scientific research.
Area Of Science
- Geosciences
- Remote Sensing
- Urban Studies
Background
- Urban building height is a critical 3D structural feature with broad applications.
- Generating high-resolution, global datasets of recent urban building heights is challenging.
Purpose Of The Study
- To develop a 150-meter resolution global urban building height dataset around 2020.
- To improve the spatial detail and flexibility of urban height data.
Main Methods
- Combined spaceborne lidar (GEDI) with multi-source satellite data (Landsat-8, Sentinel-2, Sentinel-1) and topographic data.
- Validated GEDI-estimated building heights against reference data (r=0.81, RMSE=3.58m).
- Assessed the mapping product's performance against reference data (r=0.71, RMSE=4.73m).
Main Results
- A 150m global urban building height dataset for ~2020 was produced.
- The dataset exhibits high accuracy, with GEDI samples showing strong correlation with reference data.
- The mapping product demonstrates good performance and captures spatial heterogeneity effectively.
Conclusions
- The new dataset provides unprecedented spatial resolution and detail for urban studies.
- Its flexible update mechanism using GEDI samples enhances its utility.
- This product will significantly advance research in environmental, ecological, and social sciences.
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