TITLE: UAV - Digital Surface Model from Stordalen Mire
SITES STATION: Abisko Scientific Research Station
TIMESTAMP: 2025-07-08 (Standard time)
TIME ZONE: UTC +1
LATITUDE: 68.35531078
LONGITUDE: 19.0471878
ALTITUDE: 352 m.a.s.l.
FILE RETRIVED FROM: https://data.fieldsites.se Link to metadata landing page is available in separate file in the downloaded zip.
DATA POLICY: SITES data is licensed under a Creative Commons Attribution 4.0 international license (http://creativecommons.org/licenses/by/4.0/).

PARAMETERS & UNITS: Elevation (meters above sea level, SWEREF99 TM EPSG:3006)

DESCRIPTION:
Digital Surface Model (DSM) generated from the UAV multispectral image set
via Agisoft Metashape buildDem() on an unfiltered point cloud.
Includes canopy and surface structures (not bare-earth DTM).
The ecosystem surveyed is a subarctic mire in a discontinuous permafrost
zone adjacent to lake Torneträsk.

FLIGHT PARAMETERS:
75% side and front overlap, nominally.
Nominal flight height 60 m above ground surface.
Nominal flight speed 8 m/s.

WEATHER CONDITIONS:
Data acquisition date: 2025-07-08

SENSOR DESCRIPTION:
Data acquired with DJI Mavic 3M (RGB + 4-band multispectral G/R/RE/NIR).

GEOREFERENCING:
Geometric correction via photogrammetry; projection SWEREF99_TM (EPSG:3006).

PROCESSING METHODS:
DSM processed using Agisoft Metashape v2.1.0.
