Details on data processing are provided in the companion file BTL_DroneProcessingReport.pdf.Ĭoordinates were measured with a survey-grade GPS (Trimble R8 model 4 with TSC3 Controller) and post-processed with OPUS to achieve centimeter accuracy. The digital terrain model had a horizontal resolution of 65.5 cm. The resulting spectral images and digital surface model had high spatial resolution (13.1 cm/pixel) and accuracy (RMSE=4.2 cm). The raw images were radiometrically corrected for sensor and sun irradiance biases then mosaiced and georeferenced with Pix4DMaper (Version 4.5.6 ) using seven ground control points (GCP). Spectral bands included green (550 nm), red (660 nm), red edge (735 nm), and near-infrared (790 nm). Raw multispectral images (n=908) were acquired on August 4, 2019, using an Airnov multiSpec 4C sensor deployed on an eBee Classic fixed-wing drone. The study area was a 0.5 km 2 area surrounding Big Trail Lake (BTL) in the Goldstream Creek Valley north of Fairbanks, Alaska.
The digital terrain model has a horizontal resolution of 65.5 cm, five times lower than the DSM.
Processing details of the UAV data are provided as a companion file. Each feature is labeled as GCP1-8, which corresponds to the GCP labeling in the drone imagery processing report. Shapefile bundle of 8 ground control points (GCP) for orthorectification and ground truthing. See Elder et al., (2020) for soil collar information. Each feature is named by a unique collar number and letter which designates its transect location. Shapefile bundle of soil collar point locations (CL) for measuring carbon flux of related ecosystems. Spectral reflectance in red-edge band (735 nm). Spectral reflectance in red band (660 nm). Spectral reflectance in near infrared band (790 nm). Normalized difference vegetation index (NDVI) calculated as (NIR+red)/(NIR-red). Spectral reflectance in green band (550 nm). Pixel values designate the predicted surface elevation based on the input ground control points. Pixel values designate the predicted surface and above ground vegetation elevation based on ground control points.ĭigital terrain model (DTM). This dataset includes seven files in GeoTIFF (*.tif) format, two shapefiles bundles in compressed (*.zip) format, and one companion file. Site Boundaries: Latitude and longitude are given in decimal degrees. Spatial Coverage: A 0.5-km 2 area near Fairbanks, Alaska, USA. NASA's Arctic-Boreal Vulnerability Experiment (ABoVE) provided logistical support. This work was supported by Woodwell Climate Research Center, Montana State University Undergraduate Scholars Program, NASA’s New Investigator’s Program (grant NNH17ZDA001N), and Montana Space Grant Consortium. ABoVE: Methane Flux across Two Thermokarst Lake Ecosystems, Interior Alaska, 2018. Environmental Research Letters 16:035010. Decadal-scale hotspot methane ebullition within lakes following abrupt permafrost thaw. These layers were then used to generate vegetation, water body, and elevation maps and then combined with in situ measurements of methane flux to improve upscaling models of greenhouse gas emissions. Raw images (n=908) were combined into mosaic layers that incorporated ground control points with centimeter accuracy. These high spatial resolution maps (13 cm x 13 cm) were generated by unmanned aerial vehicle (UAV) imagery collected on. This dataset provides multispectral reflectance imagery (green at 550 nm, red at 660 nm, red edge at 735 nm, and near-infrared at 790 nm), normalized difference vegetation index (NDVI), and digital surface and terrain models for a 0.5 km 2 area surrounding Big Trail Lake (BTL) in the Goldstream Creek Valley north of Fairbanks, Alaska.
MULTISPEC 4C SIMULATOR
MODIS/ASTER Airborne Simulator (MASTER).Global Ecosystem Dynamics Investigation (GEDI).Accelerated Canopy Chemistry Program (ACCP).Atmospheric Carbon and Transport - America (ACT-America).Airborne Microwave Observatory of Subcanopy and Subsurface (AirMOSS).Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE).Arctic-Boreal Vulnerability Experiment (ABoVE).Atmospheric Tracer Transport Model Intercomparison Project (TransCom).International Satellite Land Surface Climatology Project (ISLSCP II).Vegetation-Ecosystem Modeling and Analysis Project (VEMAP).Boreal Ecosystem-Atmosphere Study (BOREAS).Southern African Regional Science Initiative Project (SAFARI 2000).
Oregon Transect Ecosystem Research Project (OTTER).Large Scale Biosphere-Atmosphere Experiment (LBA-ECO).
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