A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet
The Greenland Ice Sheet (GIS) is subject to amplified impacts of climate change and its monitoring is essential for understanding and improving scenarios of future climate conditions. Surface temperature over the GIS is an important variable, regulating processes related to the exchange of energy an...
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ftdoajarticles:oai:doaj.org/article:3050dd1daebc461f80900c16c336c9a5 2023-05-15T14:04:43+02:00 A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet I. Karagali M. Barfod Suhr R. Mottram P. Nielsen-Englyst G. Dybkjær D. Ghent J. L. Høyer 2022-09-01T00:00:00Z https://doi.org/10.5194/tc-16-3703-2022 https://doaj.org/article/3050dd1daebc461f80900c16c336c9a5 EN eng Copernicus Publications https://tc.copernicus.org/articles/16/3703/2022/tc-16-3703-2022.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-16-3703-2022 1994-0416 1994-0424 https://doaj.org/article/3050dd1daebc461f80900c16c336c9a5 The Cryosphere, Vol 16, Pp 3703-3721 (2022) Environmental sciences GE1-350 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/tc-16-3703-2022 2022-12-31T00:26:21Z The Greenland Ice Sheet (GIS) is subject to amplified impacts of climate change and its monitoring is essential for understanding and improving scenarios of future climate conditions. Surface temperature over the GIS is an important variable, regulating processes related to the exchange of energy and water between the surface and the atmosphere. Few local observation sites exist; thus spaceborne platforms carrying thermal infrared instruments offer an alternative for surface temperature observations and are the basis for deriving ice surface temperature (IST) products. In this study several satellite IST products for the GIS were compared, and the first multi-sensor, gap-free (Level 4, L4) product was developed and validated for 2012. High-resolution Level 2 (L2) products from the European Space Agency (ESA) Land Surface Temperature Climate Change Initiative (LST_cci) project and the Arctic and Antarctic Ice Surface Temperatures from Thermal Infrared Satellite Sensors (AASTI) dataset were assessed using observations from the PROMICE (Programme for Monitoring of the Greenland Ice Sheet) stations and IceBridge flight campaigns. AASTI showed overall better performance compared to LST_cci data, which had superior spatial coverage and availability. Both datasets were utilised to construct a daily, gap-free L4 IST product using the optimal interpolation (OI) method. The resulting product performed satisfactorily when compared to surface temperature observations from PROMICE and IceBridge. Combining the advantages of satellite datasets, the L4 product allowed for the analysis of IST over the GIS during 2012, when a significant melt event occurred. Mean summer (June–August) IST was − 5.5 ± 4.5 ∘ C , with an annual mean of − 22.1 ± 5.4 ∘ C . Mean IST during the melt season (May–August) ranged from − 15 to − 1 ∘ C , while almost the entire GIS experienced at least between 1 and 5 melt days when temperatures were − 1 ∘ C or higher. Finally, this study assessed the potential for using the satellite L4 IST product to improve ... Article in Journal/Newspaper Antarc* Antarctic Arctic Climate change Greenland Ice Sheet The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic Antarctic Greenland The Cryosphere 16 9 3703 3721 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 I. Karagali M. Barfod Suhr R. Mottram P. Nielsen-Englyst G. Dybkjær D. Ghent J. L. Høyer A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
The Greenland Ice Sheet (GIS) is subject to amplified impacts of climate change and its monitoring is essential for understanding and improving scenarios of future climate conditions. Surface temperature over the GIS is an important variable, regulating processes related to the exchange of energy and water between the surface and the atmosphere. Few local observation sites exist; thus spaceborne platforms carrying thermal infrared instruments offer an alternative for surface temperature observations and are the basis for deriving ice surface temperature (IST) products. In this study several satellite IST products for the GIS were compared, and the first multi-sensor, gap-free (Level 4, L4) product was developed and validated for 2012. High-resolution Level 2 (L2) products from the European Space Agency (ESA) Land Surface Temperature Climate Change Initiative (LST_cci) project and the Arctic and Antarctic Ice Surface Temperatures from Thermal Infrared Satellite Sensors (AASTI) dataset were assessed using observations from the PROMICE (Programme for Monitoring of the Greenland Ice Sheet) stations and IceBridge flight campaigns. AASTI showed overall better performance compared to LST_cci data, which had superior spatial coverage and availability. Both datasets were utilised to construct a daily, gap-free L4 IST product using the optimal interpolation (OI) method. The resulting product performed satisfactorily when compared to surface temperature observations from PROMICE and IceBridge. Combining the advantages of satellite datasets, the L4 product allowed for the analysis of IST over the GIS during 2012, when a significant melt event occurred. Mean summer (June–August) IST was − 5.5 ± 4.5 ∘ C , with an annual mean of − 22.1 ± 5.4 ∘ C . Mean IST during the melt season (May–August) ranged from − 15 to − 1 ∘ C , while almost the entire GIS experienced at least between 1 and 5 melt days when temperatures were − 1 ∘ C or higher. Finally, this study assessed the potential for using the satellite L4 IST product to improve ... |
format |
Article in Journal/Newspaper |
author |
I. Karagali M. Barfod Suhr R. Mottram P. Nielsen-Englyst G. Dybkjær D. Ghent J. L. Høyer |
author_facet |
I. Karagali M. Barfod Suhr R. Mottram P. Nielsen-Englyst G. Dybkjær D. Ghent J. L. Høyer |
author_sort |
I. Karagali |
title |
A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet |
title_short |
A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet |
title_full |
A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet |
title_fullStr |
A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet |
title_full_unstemmed |
A new Level 4 multi-sensor ice surface temperature product for the Greenland Ice Sheet |
title_sort |
new level 4 multi-sensor ice surface temperature product for the greenland ice sheet |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-3703-2022 https://doaj.org/article/3050dd1daebc461f80900c16c336c9a5 |
geographic |
Arctic Antarctic Greenland |
geographic_facet |
Arctic Antarctic Greenland |
genre |
Antarc* Antarctic Arctic Climate change Greenland Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Arctic Climate change Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 16, Pp 3703-3721 (2022) |
op_relation |
https://tc.copernicus.org/articles/16/3703/2022/tc-16-3703-2022.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-16-3703-2022 1994-0416 1994-0424 https://doaj.org/article/3050dd1daebc461f80900c16c336c9a5 |
op_doi |
https://doi.org/10.5194/tc-16-3703-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
9 |
container_start_page |
3703 |
op_container_end_page |
3721 |
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1766275961629704192 |