Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument
The Sentinel Application Platform (SNAP) architecture facilitates Earth Observation data processing. In this work, we present results from a new Snow Processor for SNAP. We also describe physical principles behind the developed snow property retrieval technique based on the analysis of Ocean and Lan...
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ftmdpi:oai:mdpi.com:/2072-4292/11/19/2280/ 2023-08-20T03:59:18+02:00 Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument Alexander Kokhanovsky Maxim Lamare Olaf Danne Carsten Brockmann Marie Dumont Ghislain Picard Laurent Arnaud Vincent Favier Bruno Jourdain Emmanuel Le Meur Biagio Di Mauro Teruo Aoki Masashi Niwano Vladimir Rozanov Sergey Korkin Sepp Kipfstuhl Johannes Freitag Maria Hoerhold Alexandra Zuhr Diana Vladimirova Anne-Katrine Faber Hans Steen-Larsen Sonja Wahl Jonas Andersen Baptiste Vandecrux Dirk van As Kenneth Mankoff Michael Kern Eleonora Zege Jason Box agris 2019-09-29 application/pdf https://doi.org/10.3390/rs11192280 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/rs11192280 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 11; Issue 19; Pages: 2280 snow characteristics optical remote sensing sow grain size specific surface area albedo Sentinel 3 OLCI Text 2019 ftmdpi https://doi.org/10.3390/rs11192280 2023-07-31T22:39:22Z The Sentinel Application Platform (SNAP) architecture facilitates Earth Observation data processing. In this work, we present results from a new Snow Processor for SNAP. We also describe physical principles behind the developed snow property retrieval technique based on the analysis of Ocean and Land Colour Instrument (OLCI) onboard Sentinel-3A/B measurements over clean and polluted snow fields. Using OLCI spectral reflectance measurements in the range 400–1020 nm, we derived important snow properties such as spectral and broadband albedo, snow specific surface area, snow extent and grain size on a spatial grid of 300 m. The algorithm also incorporated cloud screening and atmospheric correction procedures over snow surfaces. We present validation results using ground measurements from Antarctica, the Greenland ice sheet and the French Alps. We find the spectral albedo retrieved with accuracy of better than 3% on average, making our retrievals sufficient for a variety of applications. Broadband albedo is retrieved with the average accuracy of about 5% over snow. Therefore, the uncertainties of satellite retrievals are close to experimental errors of ground measurements. The retrieved surface grain size shows good agreement with ground observations. Snow specific surface area observations are also consistent with our OLCI retrievals. We present snow albedo and grain size mapping over the inland ice sheet of Greenland for areas including dry snow, melted/melting snow and impurity rich bare ice. The algorithm can be applied to OLCI Sentinel-3 measurements providing an opportunity for creation of long-term snow property records essential for climate monitoring and data assimilation studies—especially in the Arctic region, where we face rapid environmental changes including reduction of snow/ice extent and, therefore, planetary albedo. Text albedo Antarc* Antarctica Arctic Greenland Ice Sheet MDPI Open Access Publishing Arctic Greenland The Sentinel ENVELOPE(73.317,73.317,-52.983,-52.983) Remote Sensing 11 19 2280 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
snow characteristics optical remote sensing sow grain size specific surface area albedo Sentinel 3 OLCI |
spellingShingle |
snow characteristics optical remote sensing sow grain size specific surface area albedo Sentinel 3 OLCI Alexander Kokhanovsky Maxim Lamare Olaf Danne Carsten Brockmann Marie Dumont Ghislain Picard Laurent Arnaud Vincent Favier Bruno Jourdain Emmanuel Le Meur Biagio Di Mauro Teruo Aoki Masashi Niwano Vladimir Rozanov Sergey Korkin Sepp Kipfstuhl Johannes Freitag Maria Hoerhold Alexandra Zuhr Diana Vladimirova Anne-Katrine Faber Hans Steen-Larsen Sonja Wahl Jonas Andersen Baptiste Vandecrux Dirk van As Kenneth Mankoff Michael Kern Eleonora Zege Jason Box Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument |
topic_facet |
snow characteristics optical remote sensing sow grain size specific surface area albedo Sentinel 3 OLCI |
description |
The Sentinel Application Platform (SNAP) architecture facilitates Earth Observation data processing. In this work, we present results from a new Snow Processor for SNAP. We also describe physical principles behind the developed snow property retrieval technique based on the analysis of Ocean and Land Colour Instrument (OLCI) onboard Sentinel-3A/B measurements over clean and polluted snow fields. Using OLCI spectral reflectance measurements in the range 400–1020 nm, we derived important snow properties such as spectral and broadband albedo, snow specific surface area, snow extent and grain size on a spatial grid of 300 m. The algorithm also incorporated cloud screening and atmospheric correction procedures over snow surfaces. We present validation results using ground measurements from Antarctica, the Greenland ice sheet and the French Alps. We find the spectral albedo retrieved with accuracy of better than 3% on average, making our retrievals sufficient for a variety of applications. Broadband albedo is retrieved with the average accuracy of about 5% over snow. Therefore, the uncertainties of satellite retrievals are close to experimental errors of ground measurements. The retrieved surface grain size shows good agreement with ground observations. Snow specific surface area observations are also consistent with our OLCI retrievals. We present snow albedo and grain size mapping over the inland ice sheet of Greenland for areas including dry snow, melted/melting snow and impurity rich bare ice. The algorithm can be applied to OLCI Sentinel-3 measurements providing an opportunity for creation of long-term snow property records essential for climate monitoring and data assimilation studies—especially in the Arctic region, where we face rapid environmental changes including reduction of snow/ice extent and, therefore, planetary albedo. |
format |
Text |
author |
Alexander Kokhanovsky Maxim Lamare Olaf Danne Carsten Brockmann Marie Dumont Ghislain Picard Laurent Arnaud Vincent Favier Bruno Jourdain Emmanuel Le Meur Biagio Di Mauro Teruo Aoki Masashi Niwano Vladimir Rozanov Sergey Korkin Sepp Kipfstuhl Johannes Freitag Maria Hoerhold Alexandra Zuhr Diana Vladimirova Anne-Katrine Faber Hans Steen-Larsen Sonja Wahl Jonas Andersen Baptiste Vandecrux Dirk van As Kenneth Mankoff Michael Kern Eleonora Zege Jason Box |
author_facet |
Alexander Kokhanovsky Maxim Lamare Olaf Danne Carsten Brockmann Marie Dumont Ghislain Picard Laurent Arnaud Vincent Favier Bruno Jourdain Emmanuel Le Meur Biagio Di Mauro Teruo Aoki Masashi Niwano Vladimir Rozanov Sergey Korkin Sepp Kipfstuhl Johannes Freitag Maria Hoerhold Alexandra Zuhr Diana Vladimirova Anne-Katrine Faber Hans Steen-Larsen Sonja Wahl Jonas Andersen Baptiste Vandecrux Dirk van As Kenneth Mankoff Michael Kern Eleonora Zege Jason Box |
author_sort |
Alexander Kokhanovsky |
title |
Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument |
title_short |
Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument |
title_full |
Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument |
title_fullStr |
Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument |
title_full_unstemmed |
Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument |
title_sort |
retrieval of snow properties from the sentinel-3 ocean and land colour instrument |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/rs11192280 |
op_coverage |
agris |
long_lat |
ENVELOPE(73.317,73.317,-52.983,-52.983) |
geographic |
Arctic Greenland The Sentinel |
geographic_facet |
Arctic Greenland The Sentinel |
genre |
albedo Antarc* Antarctica Arctic Greenland Ice Sheet |
genre_facet |
albedo Antarc* Antarctica Arctic Greenland Ice Sheet |
op_source |
Remote Sensing; Volume 11; Issue 19; Pages: 2280 |
op_relation |
https://dx.doi.org/10.3390/rs11192280 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs11192280 |
container_title |
Remote Sensing |
container_volume |
11 |
container_issue |
19 |
container_start_page |
2280 |
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1774724967660781568 |