Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes
Abstract New measurements from the Arctic ± 40 days around the summer solstice show reflected sunlight from north of 80°N decreases 20–35%. Arctic sea ice coverage decreases 7–9% over this same time period (as reported by the NSIDC) implying Arctic sea ice albedo decreases in addition to the sea ice...
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ftdoajarticles:oai:doaj.org/article:4f6f3a0b14f0445b9ac92c4276f42882 2023-10-01T03:49:53+02:00 Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes Philip L. Dreike Amy K. Kaczmarowski Christopher D. Garrett Gregory Christiansen Erika L. Roesler Mark Ivey 2023-08-01T00:00:00Z https://doi.org/10.1038/s41598-023-39877-x https://doaj.org/article/4f6f3a0b14f0445b9ac92c4276f42882 EN eng Nature Portfolio https://doi.org/10.1038/s41598-023-39877-x https://doaj.org/toc/2045-2322 doi:10.1038/s41598-023-39877-x 2045-2322 https://doaj.org/article/4f6f3a0b14f0445b9ac92c4276f42882 Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023) Medicine R Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41598-023-39877-x 2023-09-03T00:54:50Z Abstract New measurements from the Arctic ± 40 days around the summer solstice show reflected sunlight from north of 80°N decreases 20–35%. Arctic sea ice coverage decreases 7–9% over this same time period (as reported by the NSIDC) implying Arctic sea ice albedo decreases in addition to the sea ice receding. Similar Antarctic measurements provide a baseline to which Arctic measurements are compared. The Antarctic reflected sunlight south of 80°S is up to 30% larger than the Arctic reflectance and is symmetric around the solstice implying constant Antarctic reflectivity. Arctic reflected sunlight 20 days after solstice is > 100W/m2 less than Antarctic reflected sunlight. For perspective, this is enough heat to melt > 1 mm/hour of ice. This finding should be compared with climate models and in reanalysis data sets to further quantify sea ice albedo’s role in Arctic Amplification. The measurements were made with previously unpublished pixelated radiometers on Global Positioning System satellites from 2014 to 2019. The GPS orbits give each radiometer instantaneous and continuous views of 37% of the Earth, two daily full views of the Arctic and Antarctic. Furthermore, the GPS constellation gives full-time full-Earth coverage that may provide data that complements existing limited field of view instruments that provide a less synoptic Earth view. Article in Journal/Newspaper albedo Antarc* Antarctic Arctic Arctic Ocean Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic Arctic Arctic Ocean The Antarctic Scientific Reports 13 1 |
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Medicine R Science Q |
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Medicine R Science Q Philip L. Dreike Amy K. Kaczmarowski Christopher D. Garrett Gregory Christiansen Erika L. Roesler Mark Ivey Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes |
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Medicine R Science Q |
description |
Abstract New measurements from the Arctic ± 40 days around the summer solstice show reflected sunlight from north of 80°N decreases 20–35%. Arctic sea ice coverage decreases 7–9% over this same time period (as reported by the NSIDC) implying Arctic sea ice albedo decreases in addition to the sea ice receding. Similar Antarctic measurements provide a baseline to which Arctic measurements are compared. The Antarctic reflected sunlight south of 80°S is up to 30% larger than the Arctic reflectance and is symmetric around the solstice implying constant Antarctic reflectivity. Arctic reflected sunlight 20 days after solstice is > 100W/m2 less than Antarctic reflected sunlight. For perspective, this is enough heat to melt > 1 mm/hour of ice. This finding should be compared with climate models and in reanalysis data sets to further quantify sea ice albedo’s role in Arctic Amplification. The measurements were made with previously unpublished pixelated radiometers on Global Positioning System satellites from 2014 to 2019. The GPS orbits give each radiometer instantaneous and continuous views of 37% of the Earth, two daily full views of the Arctic and Antarctic. Furthermore, the GPS constellation gives full-time full-Earth coverage that may provide data that complements existing limited field of view instruments that provide a less synoptic Earth view. |
format |
Article in Journal/Newspaper |
author |
Philip L. Dreike Amy K. Kaczmarowski Christopher D. Garrett Gregory Christiansen Erika L. Roesler Mark Ivey |
author_facet |
Philip L. Dreike Amy K. Kaczmarowski Christopher D. Garrett Gregory Christiansen Erika L. Roesler Mark Ivey |
author_sort |
Philip L. Dreike |
title |
Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes |
title_short |
Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes |
title_full |
Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes |
title_fullStr |
Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes |
title_full_unstemmed |
Broadband radiometric measurements from GPS satellites reveal summertime Arctic Ocean Albedo decreases more rapidly than sea ice recedes |
title_sort |
broadband radiometric measurements from gps satellites reveal summertime arctic ocean albedo decreases more rapidly than sea ice recedes |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41598-023-39877-x https://doaj.org/article/4f6f3a0b14f0445b9ac92c4276f42882 |
geographic |
Antarctic Arctic Arctic Ocean The Antarctic |
geographic_facet |
Antarctic Arctic Arctic Ocean The Antarctic |
genre |
albedo Antarc* Antarctic Arctic Arctic Ocean Sea ice |
genre_facet |
albedo Antarc* Antarctic Arctic Arctic Ocean Sea ice |
op_source |
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023) |
op_relation |
https://doi.org/10.1038/s41598-023-39877-x https://doaj.org/toc/2045-2322 doi:10.1038/s41598-023-39877-x 2045-2322 https://doaj.org/article/4f6f3a0b14f0445b9ac92c4276f42882 |
op_doi |
https://doi.org/10.1038/s41598-023-39877-x |
container_title |
Scientific Reports |
container_volume |
13 |
container_issue |
1 |
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1778516845147455488 |