hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra
hyDRaCAT Spectral Reflectance Library for tundra provides the surface reflectance data and the bidirectional reflectance distribution function (BRDF) of important Arctic tundra vegetation communities at representative Siberian and Alaskan tundra sites. The aim of this dataset is the hyperspectral an...
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PANGAEA - Data Publisher for Earth & Environmental Science
2015
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ftdatacite:10.1594/pangaea.855997 2023-05-15T14:56:24+02:00 hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra Buchhorn, Marcel Heim, Birgit Schwieder, Marcel 2015 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.855997 https://doi.pangaea.de/10.1594/PANGAEA.855997 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.3390/s131216105 https://dx.doi.org/10.3390/rs5083971 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Event label Location of event Comment of event Date/Time of event Latitude of event Longitude of event Elevation of event File name File size Persistent Identifier RESPONSE AWI Arctic Land Expedition Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn dataset Dataset 2015 ftdatacite https://doi.org/10.1594/pangaea.855997 https://doi.org/10.3390/s131216105 https://doi.org/10.3390/rs5083971 2021-11-05T12:55:41Z hyDRaCAT Spectral Reflectance Library for tundra provides the surface reflectance data and the bidirectional reflectance distribution function (BRDF) of important Arctic tundra vegetation communities at representative Siberian and Alaskan tundra sites. The aim of this dataset is the hyperspectral and spectro-directional reflectance characterization as basis for the extraction of vegetation parameters, and the normalization of BRDF effects in off-nadir and multi-temporal remote sensing data. The spectroscopic and field spectro-goniometric measurements were undertaken on the YAMAL2011 expedition of representative Siberian vegetation fields and on the North American Arctic Transect NAAT2012 expedition of Alaskan vegetation fields both belonging to the Greening-of-the-Arctic (GOA) program. For the field spectroscopy each 100 m2 vegetation study grid was divided into quadrats of 1 × 1 m. The averaged reflectance of all quadrats represents the spectral reflectance at the scale of the whole grid at the 10 × 10 m scale. For the surface radiometric measurements two GER1500 portable field spectroradiometers (Spectra Vista Corporation, Poughkeepsie, NY, USA) were used. The GER1500 measures radiance across the wavelength range of 350-1,050 nm, with sampling intervals of 1.5 nm and a radiance accuracy of 1.2 × 10**-1 W/cm**2/nm/sr. In order to increase the signal-to-noise ratio, 32 individual measurements were averaged per one target scan. To minimize variations in the target reflectance due to sun zenith angle changes, all measurements at one study location have been performed under similar sun zenith angles and during clear-sky conditions. The field spectrometer measurements were carried out with a GER1500 UV-VIS spectrometer The spectrogoniometer measurements were carried out with a self-designed spectro-goniometer: the Manual Transportable Instrument platform for ground-based Spectro-directional observations (ManTIS, patent publication number: DE 10 2011 117 713.A1). The ManTIS was equipped with the GER1500 spectrometer allowing spectro-directional measurements with up to 30° viewing zenith angle by full 360° viewing azimuth angles. Measurements in central Yamal (Siberia) at the research site 'Vaskiny Dachi' were carried out in the late summer phenological state from August 12 2011 to August 28 2011. All measurements in Alaska along the North South transect on the North Slope were taken between 29 June and 11 July 2012, ensuring that the vegetation was in the same phenological state near peak growing season. Dataset Arctic north slope permafrost Tundra Alaska Siberia DataCite Metadata Store (German National Library of Science and Technology) Arctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Event label Location of event Comment of event Date/Time of event Latitude of event Longitude of event Elevation of event File name File size Persistent Identifier RESPONSE AWI Arctic Land Expedition Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn |
spellingShingle |
Event label Location of event Comment of event Date/Time of event Latitude of event Longitude of event Elevation of event File name File size Persistent Identifier RESPONSE AWI Arctic Land Expedition Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn Buchhorn, Marcel Heim, Birgit Schwieder, Marcel hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra |
topic_facet |
Event label Location of event Comment of event Date/Time of event Latitude of event Longitude of event Elevation of event File name File size Persistent Identifier RESPONSE AWI Arctic Land Expedition Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn |
description |
hyDRaCAT Spectral Reflectance Library for tundra provides the surface reflectance data and the bidirectional reflectance distribution function (BRDF) of important Arctic tundra vegetation communities at representative Siberian and Alaskan tundra sites. The aim of this dataset is the hyperspectral and spectro-directional reflectance characterization as basis for the extraction of vegetation parameters, and the normalization of BRDF effects in off-nadir and multi-temporal remote sensing data. The spectroscopic and field spectro-goniometric measurements were undertaken on the YAMAL2011 expedition of representative Siberian vegetation fields and on the North American Arctic Transect NAAT2012 expedition of Alaskan vegetation fields both belonging to the Greening-of-the-Arctic (GOA) program. For the field spectroscopy each 100 m2 vegetation study grid was divided into quadrats of 1 × 1 m. The averaged reflectance of all quadrats represents the spectral reflectance at the scale of the whole grid at the 10 × 10 m scale. For the surface radiometric measurements two GER1500 portable field spectroradiometers (Spectra Vista Corporation, Poughkeepsie, NY, USA) were used. The GER1500 measures radiance across the wavelength range of 350-1,050 nm, with sampling intervals of 1.5 nm and a radiance accuracy of 1.2 × 10**-1 W/cm**2/nm/sr. In order to increase the signal-to-noise ratio, 32 individual measurements were averaged per one target scan. To minimize variations in the target reflectance due to sun zenith angle changes, all measurements at one study location have been performed under similar sun zenith angles and during clear-sky conditions. The field spectrometer measurements were carried out with a GER1500 UV-VIS spectrometer The spectrogoniometer measurements were carried out with a self-designed spectro-goniometer: the Manual Transportable Instrument platform for ground-based Spectro-directional observations (ManTIS, patent publication number: DE 10 2011 117 713.A1). The ManTIS was equipped with the GER1500 spectrometer allowing spectro-directional measurements with up to 30° viewing zenith angle by full 360° viewing azimuth angles. Measurements in central Yamal (Siberia) at the research site 'Vaskiny Dachi' were carried out in the late summer phenological state from August 12 2011 to August 28 2011. All measurements in Alaska along the North South transect on the North Slope were taken between 29 June and 11 July 2012, ensuring that the vegetation was in the same phenological state near peak growing season. |
format |
Dataset |
author |
Buchhorn, Marcel Heim, Birgit Schwieder, Marcel |
author_facet |
Buchhorn, Marcel Heim, Birgit Schwieder, Marcel |
author_sort |
Buchhorn, Marcel |
title |
hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra |
title_short |
hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra |
title_full |
hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra |
title_fullStr |
hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra |
title_full_unstemmed |
hyDRaCAT Spectral Reflectance Library: Hyperspectral Field Spectroscopy and Field Spectro-Goniometry of Siberian and Alaskan Tundra |
title_sort |
hydracat spectral reflectance library: hyperspectral field spectroscopy and field spectro-goniometry of siberian and alaskan tundra |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2015 |
url |
https://dx.doi.org/10.1594/pangaea.855997 https://doi.pangaea.de/10.1594/PANGAEA.855997 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic north slope permafrost Tundra Alaska Siberia |
genre_facet |
Arctic north slope permafrost Tundra Alaska Siberia |
op_relation |
https://dx.doi.org/10.3390/s131216105 https://dx.doi.org/10.3390/rs5083971 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.855997 https://doi.org/10.3390/s131216105 https://doi.org/10.3390/rs5083971 |
_version_ |
1766328443668004864 |