About

The UMD Coincident Data Discovery Engine (powered by NSF EarthCube ICESpark) allows users to search for Earth observation data from multiple satellite missions that intersect a user-defined region of interest. The platform supports Landsat 7/8/9, Sentinel-1/2/3, ICESat-2, SWOT, NISAR, and PlanetScope. Users can filter by time range, maximum cloud cover, and maximum land percentage, and can search for coincident (intersecting) data between two sources.

Documentation: See the Wiki tab for a user guide, data source details, the API reference, and the FAQ.

Citation:
Wang, R., Xie, Y., Du, L., Yu, J., Duncan, K., Farrell, S., Li, Z., & Chai, K. (2025). Coincident Data Discovery Engine: A Portal for Global-Scale Cross-Platform Satellite Data Search. Proceedings of the 33rd ACM International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL), 860–863.
Link to paper

@inproceedings{wang2025coincident,
                title={Coincident Data Discovery Engine: A Portal for Global-Scale Cross-Platform Satellite Data Search},
                author={Wang, Ruichen and Xie, Yiqun and Du, Leo and Yu, Jia and Duncan, Kyle and Farrell, Sin{\'e}ad and Li, Zhili and Chai, Kangyang},
                booktitle={Proceedings of the 33rd ACM International Conference on Advances in Geographic Information Systems},
                pages={860--863},
                year={2025}
              }

Acknowledgement:
Ruichen Wang, Yiqun Xie, Leo Du, Kyle Duncan, Sinéad Farrell, Zhili Li, and Kangyang Chai are supported in part by the U.S. National Science Foundation (NSF) under Grant Nos. 2126474, 2147195, 2425844, and 2530610.

Feedback: Please give us feedback using this link .

Currently supported data sources:

• Individual product search:
• Landsat 7 Collection 2
• Landsat 8 Collection 2
• Landsat 9 Collection 2
• Sentinel-1 GRD
• Sentinel-2 MSI L2A
• Sentinel-3 OLCI
• ICESat-2 ATL segments
• SWOT L2 HR Raster
• NISAR (provisional products)
• PlanetScope


• Intersection (coincident) products:
• Available pairs are shown in the data source combination matrix — click the Matrix button next to the data source dropdown in the Search tab.
• New combinations become available automatically as data packages are ingested.

Searching Filters

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