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  • 1
    Publication Date: 2024-04-20
    Description: Tropical glaciers are helpful indicators of climatic changes in high-altitude environments. In East Africa, the glaciers in the three high-mountain regions Kilimanjaro, Mount Kenya and the Rwenzori Range have retreated substantially since the late 19th century. However, as there are no recent estimates for all regions, our study updates the time series of tropical glacier extent in East Africa. The methodological approach of the investigation is manual detection of ice body margins based on high-resolution satellite images of the PlanetScope program from 2021/2022. We performed three types of detection that included a minimum, a primary and a maximum extent, to indicate the range of the probable glacier area and account for individual allocation of pixels and influences of shaded or snow-covered areas.
    Keywords: Binary Object; Binary Object (Character Set); Binary Object (File Size); Binary Object (MD5 Hash); Binary Object (Media Type); East Africa; Kilimanjaro; Mount Kenya; Rwenzori; Satellite imagery; SATI; Tropical Climate; tropical glacier
    Type: Dataset
    Format: text/tab-separated-values, 54 data points
    Location Call Number Expected Availability
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  • 2
    Publication Date: 2024-04-20
    Description: Glaciers on Kilimanjaro are unique indicators for climatic changes in the tropical mid-troposphere of Africa. The history of severe glacier area loss raises concerns about an imminent future disappearance. Yet, the remaining ice volume is not well known. We reconstruct thickness maps for 2000 and 2011 for the Northern Icefield (NIF) and Kersten Glacier (KG) that are informed by ground-truth thickness measurements and multi-temporal satellite information. For 2011, we find mean thickness values of 26.6 and 9.3 m, respectively. The existing consensus estimate for global glacier ice thickness shows unrealistically thick values for KG in areas that are meanwhile ice-free. The ice thickness fields show the ice thickness in meters for the 2011 reconstruction (Experiment 3) outlined in the linked publication.
    Keywords: Binary Object; Event label; GPR; Ground-penetrating radar; ice thickness; Kersten_Glacier; KG; Kilimanjaro Northern Ice Field; KNIF; Mount Kilimanjaro, Tanzania
    Type: Dataset
    Format: text/tab-separated-values, 3 data points
    Location Call Number Expected Availability
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