Acknowledgement Policy


Official documentation for citing and acknowledging PGC support (maps, imagery, etc.).

Important Information

National Science Foundation (PGC’s primary funding source) policy requires researchers to acknowledge NSF support in all publications, web pages, and media interviews.

By accepting PGC’s services, including access to data via the PGC website, users agree to cite PGC and its sponsorship by the NSF. The original source of any third-party data supplied by PGC must also be properly attributed.

Acknowledgement of PGC’s assistance provides PGC with valuable feedback and a measure of its success in the scientific community.

If you have used PGC services, including satellite imagery delivery, follow the guidelines in the “Acknowledging PGC-provided support” section below.

If you have used a map, satellite image or imagery-derived product from PGC in a publication, refer to the “Citing PGC-provided Products” section below.

Please address any questions to your PGC Primary Contact.

Public Release Approval Process for Commercial Imagery

Important! Beyond the required copyright to Maxar and acknowledgement to PGC for support, users of NextView-licensed commercial satellite imagery must request approval prior to releasing or displaying any imagery within publicly-accessible material (academic papers, posters, presentations, etc.).

The purpose and background of this approval framework can be found here and the detailed approval process can be found in the Citation and Publication Approval guide.

Required Acknowledgements

These remarks should be included in the acknowledgements section of any published work, presentation, poster, or document.

Acknowledging PGC Services (including data access)

Geospatial support for this work provided by the Polar Geospatial Center under NSF-OPP awards 1043681 and 1559691.

Acknowledging DEMs created from the ArcticDEM Project

DEMs provided by the Polar Geospatial Center under NSF-OPP awards 1043681, 1559691, and 1542736.

Acknowledging DEMs created from the REMA Project

DEMs provided by the Byrd Polar and Climate Research Center and the Polar Geospatial Center under NSF-OPP awards 1543501, 1810976, 1542736, 1559691, 1043681, 1541332, 0753663, 1548562, 1238993 and NASA award NNX10AN61G. Computer time provided through a Blue Waters Innovation Initiative. DEMs produced using data from Maxar.

Required Citations

Published dataset citations:


Porter, Claire; Morin, Paul; Howat, Ian; Noh, Myoung-Jon; Bates, Brian; Peterman, Kenneth; Keesey, Scott; Schlenk, Matthew; Gardiner, Judith; Tomko, Karen; Willis, Michael; Kelleher, Cole; Cloutier, Michael; Husby, Eric; Foga, Steven; Nakamura, Hitomi; Platson, Melisa; Wethington, Michael, Jr.; Williamson, Cathleen; Bauer, Gregory; Enos, Jeremy; Arnold, Galen; Kramer, William; Becker, Peter; Doshi, Abhijit; D’Souza, Cristelle; Cummens, Pat; Laurier, Fabien; Bojesen, Mikkel, 2018, “ArcticDEM”,, Harvard Dataverse, V1, [Date Accessed].


Howat, I. M., Porter, C., Smith, B. E., Noh, M.-J., and Morin, P.: The Reference Elevation Model of Antarctica, The Cryosphere, 13, 665-674,, 2019.


Polar Geospatial Center, 2018, “PGC Map Catalog”,, Harvard Dataverse, V1, [Map Referenced ID], [Date Accessed].

The citations below should be included as close to the product as possible (e.g figure caption) in any published work, presentation, poster, or document.

Citing PGC-created Figures and Illustrations

[Map, Figure] by [Author’s Name], Polar Geospatial Center.

Citing Existing non-PGC Maps from PGC Map Catalog

Map copyright [Authoring Organization], Accessed from Polar Geospatial Center, Reference ID: [PGC reference ID].

Citing PGC-created Figures and Illustrations Containing maxar Imagery

Imagery © [year of imagery collection] Maxar [Map, Figure] and data provided by [author’s name], Polar Geospatial Center.

Citing maxar Commercial Satellite Imagery

Imagery © [year of imagery collection] Maxar

Citing PGC-built Digital Elevation Models

DEM(s) created by the Polar Geospatial Center from Maxar imagery.

Acknowledging Graphics and Illustrations Derived from PGC DEMs (hillshades, panoramas, etc.)

DEM(s) courtesy of the Polar Geospatial Center.

You may replace the © symbol with “copyright” or “(c)” if necessary.

In the case that there are images from multiple years, use the current year.


In this Guide, we’ve covered:

  • Necessity for PGC’s Acknowledgement Policy
  • Referencing PGC support in the acknowledgements
  • Citing PGC products in publications, captions, and maps

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