Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice
Two long records of melt onset (MO) on Arctic sea ice from passive microwave brightness temperatures (Tbs) obtained by a series of satellite-borne instruments are compared. The Passive Microwave (PMW) method and Advanced Horizontal Range Algorithm (AHRA) detect the increase in emissivity that occurs...
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Online Access: | https://doi.org/10.3390/rs9030199 https://doaj.org/article/e0e2f74770cd43f8b3c75b8f9d05cc67 |
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ftdoajarticles:oai:doaj.org/article:e0e2f74770cd43f8b3c75b8f9d05cc67 2023-05-15T14:43:20+02:00 Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice Angela C. Bliss Jeffrey A. Miller Walter N. Meier 2017-02-01T00:00:00Z https://doi.org/10.3390/rs9030199 https://doaj.org/article/e0e2f74770cd43f8b3c75b8f9d05cc67 EN eng MDPI AG http://www.mdpi.com/2072-4292/9/3/199 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs9030199 https://doaj.org/article/e0e2f74770cd43f8b3c75b8f9d05cc67 Remote Sensing, Vol 9, Iss 3, p 199 (2017) Arctic sea ice melt melt onset passive microwave Science Q article 2017 ftdoajarticles https://doi.org/10.3390/rs9030199 2022-12-31T04:02:03Z Two long records of melt onset (MO) on Arctic sea ice from passive microwave brightness temperatures (Tbs) obtained by a series of satellite-borne instruments are compared. The Passive Microwave (PMW) method and Advanced Horizontal Range Algorithm (AHRA) detect the increase in emissivity that occurs when liquid water develops around snow grains at the onset of early melting on sea ice. The timing of MO on Arctic sea ice influences the amount of solar radiation absorbed by the ice–ocean system throughout the melt season by reducing surface albedos in the early spring. This work presents a thorough comparison of these two methods for the time series of MO dates from 1979 through 2012. The methods are first compared using the published data as a baseline comparison of the publically available data products. A second comparison is performed on adjusted MO dates we produced to remove known differences in inter-sensor calibration of Tbs and masking techniques used to develop the original MO date products. These adjustments result in a more consistent set of input Tbs for the algorithms. Tests of significance indicate that the trends in the time series of annual mean MO dates for the PMW and AHRA are statistically different for the majority of the Arctic Ocean including the Laptev, E. Siberian, Chukchi, Beaufort, and central Arctic regions with mean differences as large as 38.3 days in the Barents Sea. Trend agreement improves for our more consistent MO dates for nearly all regions. Mean differences remain large, primarily due to differing sensitivity of in-algorithm thresholds and larger uncertainties in thin-ice regions. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Chukchi laptev Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Barents Sea Remote Sensing 9 3 199 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic sea ice melt melt onset passive microwave Science Q |
spellingShingle |
Arctic sea ice melt melt onset passive microwave Science Q Angela C. Bliss Jeffrey A. Miller Walter N. Meier Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice |
topic_facet |
Arctic sea ice melt melt onset passive microwave Science Q |
description |
Two long records of melt onset (MO) on Arctic sea ice from passive microwave brightness temperatures (Tbs) obtained by a series of satellite-borne instruments are compared. The Passive Microwave (PMW) method and Advanced Horizontal Range Algorithm (AHRA) detect the increase in emissivity that occurs when liquid water develops around snow grains at the onset of early melting on sea ice. The timing of MO on Arctic sea ice influences the amount of solar radiation absorbed by the ice–ocean system throughout the melt season by reducing surface albedos in the early spring. This work presents a thorough comparison of these two methods for the time series of MO dates from 1979 through 2012. The methods are first compared using the published data as a baseline comparison of the publically available data products. A second comparison is performed on adjusted MO dates we produced to remove known differences in inter-sensor calibration of Tbs and masking techniques used to develop the original MO date products. These adjustments result in a more consistent set of input Tbs for the algorithms. Tests of significance indicate that the trends in the time series of annual mean MO dates for the PMW and AHRA are statistically different for the majority of the Arctic Ocean including the Laptev, E. Siberian, Chukchi, Beaufort, and central Arctic regions with mean differences as large as 38.3 days in the Barents Sea. Trend agreement improves for our more consistent MO dates for nearly all regions. Mean differences remain large, primarily due to differing sensitivity of in-algorithm thresholds and larger uncertainties in thin-ice regions. |
format |
Article in Journal/Newspaper |
author |
Angela C. Bliss Jeffrey A. Miller Walter N. Meier |
author_facet |
Angela C. Bliss Jeffrey A. Miller Walter N. Meier |
author_sort |
Angela C. Bliss |
title |
Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice |
title_short |
Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice |
title_full |
Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice |
title_fullStr |
Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice |
title_full_unstemmed |
Comparison of Passive Microwave-Derived Early Melt Onset Records on Arctic Sea Ice |
title_sort |
comparison of passive microwave-derived early melt onset records on arctic sea ice |
publisher |
MDPI AG |
publishDate |
2017 |
url |
https://doi.org/10.3390/rs9030199 https://doaj.org/article/e0e2f74770cd43f8b3c75b8f9d05cc67 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Ocean Barents Sea Chukchi laptev Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Chukchi laptev Sea ice |
op_source |
Remote Sensing, Vol 9, Iss 3, p 199 (2017) |
op_relation |
http://www.mdpi.com/2072-4292/9/3/199 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs9030199 https://doaj.org/article/e0e2f74770cd43f8b3c75b8f9d05cc67 |
op_doi |
https://doi.org/10.3390/rs9030199 |
container_title |
Remote Sensing |
container_volume |
9 |
container_issue |
3 |
container_start_page |
199 |
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1766315005523787776 |