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- W4366337551 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Snow conditions in the northern hemisphere are rapidly changing, and information on snow depth is critical for decision-making and other societal needs. Unmanned aircraft systems (UASs) can offer data resolutions of a few centimeters at a catchment-scale, and thus provide a low-cost solution to bridge the gap between sparse manual probing and low-resolution satellite data. In this study, we present a series of snow depth measurements using different UAS platforms throughout the winter in the Finnish subarctic site Pallas, which has a heterogeneous landscape. We discuss the different platforms, the methods utilized, difficulties working in the harsh northern environment, and the results and their accuracy compared to in situ measurements. Generally, all UASs produced spatially representative estimates of snow depth in open areas after reliable georeferencing by using the Structure from Motion (SfM) photogrammetry technique. However, significant differences were observed in the accuracies produced by the different UASs compared to manual snow depth measurements, with overall RMSEs varying between 13.0 to 25.2 cm, depending on the UAS. Additionally, a reduction in accuracy was observed when moving from an open mire area to forest covered areas. We demonstrate the potential of low-cost UASs to efficiently map snow surface conditions, and we give some recommendations on UAS platform selection and operation in a harsh subarctic environment with variable canopy cover." @default.
- W4366337551 created "2023-04-20" @default.
- W4366337551 creator A5064170698 @default.
- W4366337551 date "2023-04-18" @default.
- W4366337551 modified "2023-09-25" @default.
- W4366337551 title "Reply on RC1" @default.
- W4366337551 doi "https://doi.org/10.5194/tc-2022-239-ac1" @default.
- W4366337551 hasPublicationYear "2023" @default.
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