Detection of sea ice pressure ridges using photon elevations from ICESat-2
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School of Engineering |
Master's thesis
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Date
2024-09-29
Department
Major/Subject
Space Track
Mcode
Degree programme
Nordic Master's Programme in Cold Climate Engineering
Language
en
Pages
107
Series
Abstract
Sea ice ridges make up an estimated 40-50% of the total area of Arctic sea ice cover, however there is a gap in the data and analysis of their characteristics on a large scale. NASAŠs ICESat-2 laser altimeter, ATLAS, provides photon elevation data for the Arctic at a high resolution. The purpose of this paper is to develop a ridge detection algorithm which will create a surface profile from ICESat-2 data and identify ridges and their features. The algorithm developed, the DTU-Aalto Ridge Detection Algorithm (DA-RDA), is successful at creating a surface profile for full satellite tracks of data, spanning several thousand kilometers. DA-RDA is able to identify ridges and quantify their characteristics along smaller tracks. The GUI developed for this algorithm makes the data and surface profile more easily accessible.Description
Supervisor
Praks, JaanThesis advisor
Skourup, HenrietteFredensborg Hansen, Renée Mie
Keywords
remote sensing, sea ice, pressure ridge, laser altimetry, satellite altimetry, ICESat-2