AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT

The dataset contains 10 meter resolution reflectance data from boreal and tundra sites during spring snow melt. The purpose of the airborne measurements was to investigate the effect of forest canopy and snow melting on optical remote sensing signals at the very end of melting period. The hyperspect...

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Main Author: Heinilä Kirsikka
Format: Dataset
Language:English
Published: 2019
Subjects:
Online Access:https://zenodo.org/record/3580419
https://doi.org/10.5281/zenodo.3580419
id ftzenodo:oai:zenodo.org:3580419
record_format openpolar
spelling ftzenodo:oai:zenodo.org:3580419 2023-05-15T18:20:14+02:00 AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT Heinilä Kirsikka 2019-05-28 https://zenodo.org/record/3580419 https://doi.org/10.5281/zenodo.3580419 eng eng doi:10.5281/zenodo.3048901 https://zenodo.org/communities/boreal_reflectances https://zenodo.org/record/3580419 https://doi.org/10.5281/zenodo.3580419 oai:zenodo.org:3580419 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode reflectance AISA airborne spectrometer snow melt boreal forest tundra info:eu-repo/semantics/other dataset 2019 ftzenodo https://doi.org/10.5281/zenodo.358041910.5281/zenodo.3048901 2023-03-10T22:51:09Z The dataset contains 10 meter resolution reflectance data from boreal and tundra sites during spring snow melt. The purpose of the airborne measurements was to investigate the effect of forest canopy and snow melting on optical remote sensing signals at the very end of melting period. The hyperspectral airborne data was acquired with an AisaDUAL imaging spectrometer on 5 May 2011 in Sodankylä and in Saariselkä, Finland. Saariselkä is a fell region and partly represents open tundra. The image swath was 240 meters and flight lines were several kilometers long. The original spatial resolution of the data is 80 cm x 80 cm, but it was resampled to pixel size of 10 m x 10 m. Snow depth was between 0 cm and 30 cm at the Sodankylä site and between 0 cm and 60 cm at the Saariselkä site implying that the spring melt was clearly more advanced in Sodankylä. Additionally, more snow-free pixels were found at Sodankylä than Saariselkä. During the measurements the sky was cloudless in Sodankylä (cloud cover 0/8) and cloudy (cloud cover 7/8) in Saariselkä. The data contains mosaics of the flight lines for the bands 555 nm, 645 nm, 858.5 nm and 1640 nm for both study sites. Sampling: The airborne hyperspectral data were acquired with an AisaDUAL imaging spectrometer manufactured by Spectral Imaging Ltd (SPECIM). The airborne spectral measurements were made from airplane at an altitude of 800 m offering a spatial resolution of 0.8 m and a swath of 240 m. Flight lines were several kilometers long. The instrument foreoptic unit was set to look at nadir (0 degrees) and the field of view (FOV) was 17 degrees. The Oxford Technical Solutions RT4000 GPS/INS was utilized to provide high accuracy position measurements with low drift rates. The reflectance level was obtained by applying a real-time fibre optic downwelling irradiance sensor (FODIS). The measurements from Sodankylä were carried out in direct illumination (i.e. clear sky: 0/8) and the measurements from Saariselkä were carried out in diffuse illumination (i.e. cloudy sky: ... Dataset Sodankylä Tundra Zenodo Sodankylä ENVELOPE(26.600,26.600,67.417,67.417)
institution Open Polar
collection Zenodo
op_collection_id ftzenodo
language English
topic reflectance
AISA
airborne
spectrometer
snow melt
boreal forest
tundra
spellingShingle reflectance
AISA
airborne
spectrometer
snow melt
boreal forest
tundra
Heinilä Kirsikka
AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT
topic_facet reflectance
AISA
airborne
spectrometer
snow melt
boreal forest
tundra
description The dataset contains 10 meter resolution reflectance data from boreal and tundra sites during spring snow melt. The purpose of the airborne measurements was to investigate the effect of forest canopy and snow melting on optical remote sensing signals at the very end of melting period. The hyperspectral airborne data was acquired with an AisaDUAL imaging spectrometer on 5 May 2011 in Sodankylä and in Saariselkä, Finland. Saariselkä is a fell region and partly represents open tundra. The image swath was 240 meters and flight lines were several kilometers long. The original spatial resolution of the data is 80 cm x 80 cm, but it was resampled to pixel size of 10 m x 10 m. Snow depth was between 0 cm and 30 cm at the Sodankylä site and between 0 cm and 60 cm at the Saariselkä site implying that the spring melt was clearly more advanced in Sodankylä. Additionally, more snow-free pixels were found at Sodankylä than Saariselkä. During the measurements the sky was cloudless in Sodankylä (cloud cover 0/8) and cloudy (cloud cover 7/8) in Saariselkä. The data contains mosaics of the flight lines for the bands 555 nm, 645 nm, 858.5 nm and 1640 nm for both study sites. Sampling: The airborne hyperspectral data were acquired with an AisaDUAL imaging spectrometer manufactured by Spectral Imaging Ltd (SPECIM). The airborne spectral measurements were made from airplane at an altitude of 800 m offering a spatial resolution of 0.8 m and a swath of 240 m. Flight lines were several kilometers long. The instrument foreoptic unit was set to look at nadir (0 degrees) and the field of view (FOV) was 17 degrees. The Oxford Technical Solutions RT4000 GPS/INS was utilized to provide high accuracy position measurements with low drift rates. The reflectance level was obtained by applying a real-time fibre optic downwelling irradiance sensor (FODIS). The measurements from Sodankylä were carried out in direct illumination (i.e. clear sky: 0/8) and the measurements from Saariselkä were carried out in diffuse illumination (i.e. cloudy sky: ...
format Dataset
author Heinilä Kirsikka
author_facet Heinilä Kirsikka
author_sort Heinilä Kirsikka
title AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT
title_short AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT
title_full AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT
title_fullStr AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT
title_full_unstemmed AIRBORNE SPECTROMETER MEASUREMENTS FROM BOREAL AND TUNDRA SITE DURING SPRING SNOW MELT
title_sort airborne spectrometer measurements from boreal and tundra site during spring snow melt
publishDate 2019
url https://zenodo.org/record/3580419
https://doi.org/10.5281/zenodo.3580419
long_lat ENVELOPE(26.600,26.600,67.417,67.417)
geographic Sodankylä
geographic_facet Sodankylä
genre Sodankylä
Tundra
genre_facet Sodankylä
Tundra
op_relation doi:10.5281/zenodo.3048901
https://zenodo.org/communities/boreal_reflectances
https://zenodo.org/record/3580419
https://doi.org/10.5281/zenodo.3580419
oai:zenodo.org:3580419
op_rights info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/4.0/legalcode
op_doi https://doi.org/10.5281/zenodo.358041910.5281/zenodo.3048901
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