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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/tc-2019-303
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2019-303
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: brief communication 03 Feb 2020

Submitted as: brief communication | 03 Feb 2020

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This preprint is currently under review for the journal TC.

Brief Communication: Update on the GPS Reflection Technique for Measuring Snow Accumulation in Greenland

Kristine M. Larson1, Michael MacFerrin2, and Thomas Nylen3 Kristine M. Larson et al.
  • 1Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO, 80309-0429, USA
  • 2CIRES, University of Colorado, Boulder, CO 80309-0216, USA
  • 3UNAVCO, 6350 Nautilus Drive, Boulder, CO 80301, USA

Abstract. GPS Interferometric Reflectometry (GPS-IR) is a technique that can be used to measure snow accumulation on ice sheets. The footprint of the method (~ 1000 m^2) is larger than many other in situ methods. A long-term comparison with hand-measurements yielded an accuracy assessment of 2 cm. Depending on the placement of the GPS antenna, these data are also sensitive to firn density. The purpose of this short note is to make public GPS-IR measurements of snow accumulation for four sites in Greenland, compare these records with in situ sensors, and to make available open source GPS-IR software to the cryosphere community.

Kristine M. Larson et al.

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Status: open (until 30 Mar 2020)
Status: open (until 30 Mar 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Kristine M. Larson et al.

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Latest update: 23 Feb 2020
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Short summary
Reflected GPS signals can be used to measure snow accumulation. The GPS method is accurate and has a footprint that is larger than many other methods. This short note makes available nine years of daily snow accumulation measurements from Greenland that were derived from reflected GPS signals. It also provides information about open source software that the cryosphere community can use to analyze other datasets.
Reflected GPS signals can be used to measure snow accumulation. The GPS method is accurate and...
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