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Published on: October 16, 2018
High spatial resolution elevation change dataset derived from ICESat-2 crossover points on the Tibetan Plateau
Tengfei Chen1,2,3,4, Jian Wang1,5, Tao Che1,5
1Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
A new dataset of elevation changes on the Tibetan Plateau was created using ICESat-2 crossover points. This high-resolution data reliably tracks topography changes, crucial for understanding climate and water resources.
Area of Science:
- Geosciences
- Remote Sensing
- Cryosphere Science
Background:
- Tibetan Plateau elevation changes impact topography, climate, and water resources.
- Existing elevation change products have limitations in spatial coverage and resolution.
- High-resolution elevation data is needed for accurate environmental monitoring.
Purpose of the Study:
- To develop an algorithm for extracting ICESat-2 crossover points data on the Tibetan Plateau.
- To create a high-density dataset of elevation changes.
- To validate the dataset's reliability for monitoring Tibetan Plateau elevation dynamics.
Main Methods:
- Utilized the Ice, Cloud, and land Elevation Satellite 2 (ICESat-2) crossover points dataset.
- Developed a novel algorithm to process ICESat-2 data for the Tibetan Plateau.
- Formed a dataset with a density of 2.015 groups/km², each representing ~17m diameter elevation change.
Main Results:
- Successfully generated a high-density ICESat-2 crossover points dataset for the Tibetan Plateau.
- Demonstrated the reliability of the derived elevation changes by comparing with glacier and lake studies.
- The dataset provides refined, high-spatial-resolution elevation change information.
Conclusions:
- The ICESat-2 crossover points dataset offers a valuable resource for studying Tibetan Plateau elevation changes.
- This dataset enhances understanding of topography, climate, and water resource dynamics.
- It serves as crucial validation data for high-precision, high-resolution elevation change studies.
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