Visible to near-infrared spectral reflectance along the NGEE-Arctic tram transect, Utqiagvik (Barrow), Alaska, 2015–2018 ...

• Main Authors: Serbin, Shawn, McMahon, Andrew, Lewin, Keith, Chafe, Oriana, Curtis, Bryan, Ely, Kim
• Format: Dataset
• Language: English
• Published: Next Generation Ecosystems Experiment - Arctic, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US); NGEE Arctic, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States) 2024
• Subjects: 54 Environmental Sciences; ESS-DIVE CSV File Formatting Guidelines Reporting Format;ESS-DIVE File Level Metadata Reporting Format;Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Hyperspectral Spectrometers/Radiometers;Barrow;Alaska;Utqiagvik; Arctic; Barrow; Alaska
• Online Access: https://dx.doi.org/10.5440/1183993; https://www.osti.gov/servlets/purl/1183993/

Canopy spectral reflectance collected measured in 2015–2018 along the NGEE-Arctic tram located on the Barrow Environmental Observatory (BEO), Barrow, Alaska. Measurements were made using a PP-Systems UniSpec-DC spectrometer mounted on an automatically operated instrument cart. Spectra were collected at 137 stop points at 0.5 m intervals along the tram transect. Transect runs were collected daily, or multiple times per day, from April or May through to August or September each year. Downwelling radiance was measured using a 2 meter fiber optic cable connected to a cosine diffuser. Upwelling (i.e. reflected) radiance was measured using a 2 meter cable connected to a 12 degree field-of-view (FOV) lens. Canopy reflectance was calculated using the ratio of upwelling to downwelling radiance measured over a 99.99% reflectance Spectralon standard measured at the start of each measurement set. Unprocessed spectral data are presented in .spu files. Metadata are provided in csv files, and the instrument manual ...