Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet
https://doi.org/10.3389/feart.2017.00040 Measurements of albedo are a prerequisite for modeling surface melt across the Earth’s cryosphere, yet available satellite products are limited in spatial and/or temporal resolution. Here, we present a practical methodology to obtain centimeter resolution alb...
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Online Access: | https://hdl.handle.net/10037/12264 https://doi.org/10.3389/feart.2017.00040 |
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ftunivtroemsoe:oai:munin.uit.no:10037/12264 2023-05-15T14:27:34+02:00 Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet Ryan, Jonathan C. Hubbard, Alun Lloyd Box, Jason E. Brough, Stephen Cameron, Karen Cook, Joseph M. Cooper, Matthew Doyle, Samuel H. Edwards, Arwyn Holt, Tom Irvine-Fynn, Tristram Jones, Christine Pitcher, Lincoln H. Rennermalm, Åsa K. Smith, Laurence C. Stibal, Marek Snooke, Neal 2017-05-23 https://hdl.handle.net/10037/12264 https://doi.org/10.3389/feart.2017.00040 eng eng Frontiers Media Frontiers in Earth Science info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Ryan, J. C., Hubbard, A. L., Box, J. E., Brough, S., Cameron, K., Cook, J. M., Cooper, M. … Snooke, N. (2017). Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet. Frontiers in Earth Science, 5(40), 1-13. https://doi.org/10.3389/feart.2017.00040 FRIDAID 1477303 doi:10.3389/feart.2017.00040 2296-6463 https://hdl.handle.net/10037/12264 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.3389/feart.2017.00040 2021-06-25T17:55:39Z https://doi.org/10.3389/feart.2017.00040 Measurements of albedo are a prerequisite for modeling surface melt across the Earth’s cryosphere, yet available satellite products are limited in spatial and/or temporal resolution. Here, we present a practical methodology to obtain centimeter resolution albedo products with accuracies of ±5% using consumer-grade digital camera and unmanned aerial vehicle (UAV) technologies. Our method comprises a workflow for processing, correcting and calibrating raw digital images using a white reference target, and upward and downward shortwave radiation measurements from broadband silicon pyranometers. We demonstrate the method with a set of UAV sorties over the western, K-sector of the Greenland Ice Sheet. The resulting albedo product, UAV10A1, covers 280 km2 , at a resolution of 20 cm per pixel and has a root-mean-square difference of 3.7% compared to MOD10A1 and 4.9% compared to ground-based broadband pyranometer measurements. By continuously measuring downward solar irradiance, the technique overcomes previous limitations due to variable illumination conditions during and between surveys over glaciated terrain. The current miniaturization of multispectral sensors and incorporation of upward facing radiation sensors on UAV packages means that this technique could become increasingly common in field studies and used for a wide range of applications. These include the mapping of debris, dust, cryoconite and bioalbedo, and directly constraining surface energy balance models. Article in Journal/Newspaper Arctic Greenland Ice Sheet University of Tromsø: Munin Open Research Archive Greenland Frontiers in Earth Science 5 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
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VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Ryan, Jonathan C. Hubbard, Alun Lloyd Box, Jason E. Brough, Stephen Cameron, Karen Cook, Joseph M. Cooper, Matthew Doyle, Samuel H. Edwards, Arwyn Holt, Tom Irvine-Fynn, Tristram Jones, Christine Pitcher, Lincoln H. Rennermalm, Åsa K. Smith, Laurence C. Stibal, Marek Snooke, Neal Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
description |
https://doi.org/10.3389/feart.2017.00040 Measurements of albedo are a prerequisite for modeling surface melt across the Earth’s cryosphere, yet available satellite products are limited in spatial and/or temporal resolution. Here, we present a practical methodology to obtain centimeter resolution albedo products with accuracies of ±5% using consumer-grade digital camera and unmanned aerial vehicle (UAV) technologies. Our method comprises a workflow for processing, correcting and calibrating raw digital images using a white reference target, and upward and downward shortwave radiation measurements from broadband silicon pyranometers. We demonstrate the method with a set of UAV sorties over the western, K-sector of the Greenland Ice Sheet. The resulting albedo product, UAV10A1, covers 280 km2 , at a resolution of 20 cm per pixel and has a root-mean-square difference of 3.7% compared to MOD10A1 and 4.9% compared to ground-based broadband pyranometer measurements. By continuously measuring downward solar irradiance, the technique overcomes previous limitations due to variable illumination conditions during and between surveys over glaciated terrain. The current miniaturization of multispectral sensors and incorporation of upward facing radiation sensors on UAV packages means that this technique could become increasingly common in field studies and used for a wide range of applications. These include the mapping of debris, dust, cryoconite and bioalbedo, and directly constraining surface energy balance models. |
format |
Article in Journal/Newspaper |
author |
Ryan, Jonathan C. Hubbard, Alun Lloyd Box, Jason E. Brough, Stephen Cameron, Karen Cook, Joseph M. Cooper, Matthew Doyle, Samuel H. Edwards, Arwyn Holt, Tom Irvine-Fynn, Tristram Jones, Christine Pitcher, Lincoln H. Rennermalm, Åsa K. Smith, Laurence C. Stibal, Marek Snooke, Neal |
author_facet |
Ryan, Jonathan C. Hubbard, Alun Lloyd Box, Jason E. Brough, Stephen Cameron, Karen Cook, Joseph M. Cooper, Matthew Doyle, Samuel H. Edwards, Arwyn Holt, Tom Irvine-Fynn, Tristram Jones, Christine Pitcher, Lincoln H. Rennermalm, Åsa K. Smith, Laurence C. Stibal, Marek Snooke, Neal |
author_sort |
Ryan, Jonathan C. |
title |
Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet |
title_short |
Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet |
title_full |
Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet |
title_fullStr |
Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet |
title_full_unstemmed |
Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet |
title_sort |
derivation of high spatial resolution albedo from uav digital imagery: application over the greenland ice sheet |
publisher |
Frontiers Media |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/12264 https://doi.org/10.3389/feart.2017.00040 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Arctic Greenland Ice Sheet |
genre_facet |
Arctic Greenland Ice Sheet |
op_relation |
Frontiers in Earth Science info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Ryan, J. C., Hubbard, A. L., Box, J. E., Brough, S., Cameron, K., Cook, J. M., Cooper, M. … Snooke, N. (2017). Derivation of High Spatial Resolution Albedo from UAV Digital Imagery: Application over the Greenland Ice Sheet. Frontiers in Earth Science, 5(40), 1-13. https://doi.org/10.3389/feart.2017.00040 FRIDAID 1477303 doi:10.3389/feart.2017.00040 2296-6463 https://hdl.handle.net/10037/12264 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3389/feart.2017.00040 |
container_title |
Frontiers in Earth Science |
container_volume |
5 |
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1766301363717799936 |