Monitoring Ice Sheet Melt and Refreeze Using Active Microwave Measurements

Thomas Nagler*, Jan Wuite, Helmut Rott, Stefan Scheiblauer, Anna Puggaard, Diego Fernàndez Prieto

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The time-varying areal extent and duration of surface melt on ice sheets are important parameters for climate and cryosphere research and key indicators of climate change in polar regions. To evaluate snowmelt dynamics and melting/refreezing processes in Greenland and Antarctica, we developed and implemented an algorithm for generating time-series of surface melt extent and melt phases (dry, wet refreezing) based on the analysis of continuous time series of C-band active microwave satellite data. Our results, based on METOP ASCAT scatterometer and Sentinel-1 SAR data, demonstrate the excellent capability of these missions for operational monitoring of snowmelt areas, providing a consistent climate data record on the presence of liquid water in snow and firn areas of Greenland and Antarctica for studying surface melt processes and ice sheet mass loss.

Original languageEnglish
Title of host publicationIGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium
PublisherIEEE
Publication date2024
Pages49-52
ISBN (Electronic)979-8-35036032-5
DOIs
Publication statusPublished - 2024
Event2024 IEEE International Geoscience and Remote Sensing Symposium - Athens, Greece
Duration: 7 Jul 202412 Jul 2024

Conference

Conference2024 IEEE International Geoscience and Remote Sensing Symposium
Country/TerritoryGreece
CityAthens
Period07/07/202412/07/2024
SeriesIEEE International Geoscience and Remote Sensing Symposium Proceedings
ISSN2153-6996

Keywords

  • Antarctica
  • ASCAT
  • Greenland
  • Ice Sheet
  • Sentinel-1
  • Surface Melt

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