Greenland surface albedo changes in July 1981–2012 from satellite observations
Significant melting events over Greenland have been observed over the past few decades. This study presents an analysis of surface albedo change over Greenland using a 32-year consistent satellite albedo product from the global land surface satellite (GLASS) project together with ground measurements...
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ftdoajarticles:oai:doaj.org/article:aefad5fca7564eda807e9506758a08a1 2023-09-05T13:19:45+02:00 Greenland surface albedo changes in July 1981–2012 from satellite observations Tao He Shunlin Liang Yunyue Yu Dongdong Wang Feng Gao Qiang Liu 2013-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/8/4/044043 https://doaj.org/article/aefad5fca7564eda807e9506758a08a1 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/8/4/044043 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/8/4/044043 1748-9326 https://doaj.org/article/aefad5fca7564eda807e9506758a08a1 Environmental Research Letters, Vol 8, Iss 4, p 044043 (2013) surface albedo Greenland satellite observation GLASS albedo CMIP5 IPCC AR5 Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2013 ftdoajarticles https://doi.org/10.1088/1748-9326/8/4/044043 2023-08-13T00:37:28Z Significant melting events over Greenland have been observed over the past few decades. This study presents an analysis of surface albedo change over Greenland using a 32-year consistent satellite albedo product from the global land surface satellite (GLASS) project together with ground measurements. Results show a general decreasing trend of surface albedo from 1981 to 2012 (−0.009 ± 0.002 decade ^−1 , p < 0.01). However, a large decrease has occurred since 2000 (−0.028 ± 0.008 decade ^−1 , p < 0.01) with most significant decreases at elevations between 1000 and 1500 m (−0.055 decade ^−1 , p < 0.01) which may be associated with surface temperature increases. The surface radiative forcing from albedo changes is 2.73 W m ^−2 decade ^−1 and 3.06 W m ^−2 decade ^−1 under full-sky and clear-sky conditions, respectively, which indicates that surface albedo changes are likely to have a larger impact on the surface shortwave radiation budget than that caused by changes in the atmosphere over Greenland. A comparison made between satellite albedo products and data output from the Coupled Model Inter-comparison Project 5 (CMIP5) general circulation models (GCMs) shows that most of the CMIP5 models do not detect the significantly decreasing trends of albedo in recent decades. This suggests that more efforts are needed to improve our understanding and simulation of climate change at high latitudes. Article in Journal/Newspaper Greenland Directory of Open Access Journals: DOAJ Articles Greenland Environmental Research Letters 8 4 044043 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
surface albedo Greenland satellite observation GLASS albedo CMIP5 IPCC AR5 Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
surface albedo Greenland satellite observation GLASS albedo CMIP5 IPCC AR5 Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Tao He Shunlin Liang Yunyue Yu Dongdong Wang Feng Gao Qiang Liu Greenland surface albedo changes in July 1981–2012 from satellite observations |
topic_facet |
surface albedo Greenland satellite observation GLASS albedo CMIP5 IPCC AR5 Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Significant melting events over Greenland have been observed over the past few decades. This study presents an analysis of surface albedo change over Greenland using a 32-year consistent satellite albedo product from the global land surface satellite (GLASS) project together with ground measurements. Results show a general decreasing trend of surface albedo from 1981 to 2012 (−0.009 ± 0.002 decade ^−1 , p < 0.01). However, a large decrease has occurred since 2000 (−0.028 ± 0.008 decade ^−1 , p < 0.01) with most significant decreases at elevations between 1000 and 1500 m (−0.055 decade ^−1 , p < 0.01) which may be associated with surface temperature increases. The surface radiative forcing from albedo changes is 2.73 W m ^−2 decade ^−1 and 3.06 W m ^−2 decade ^−1 under full-sky and clear-sky conditions, respectively, which indicates that surface albedo changes are likely to have a larger impact on the surface shortwave radiation budget than that caused by changes in the atmosphere over Greenland. A comparison made between satellite albedo products and data output from the Coupled Model Inter-comparison Project 5 (CMIP5) general circulation models (GCMs) shows that most of the CMIP5 models do not detect the significantly decreasing trends of albedo in recent decades. This suggests that more efforts are needed to improve our understanding and simulation of climate change at high latitudes. |
format |
Article in Journal/Newspaper |
author |
Tao He Shunlin Liang Yunyue Yu Dongdong Wang Feng Gao Qiang Liu |
author_facet |
Tao He Shunlin Liang Yunyue Yu Dongdong Wang Feng Gao Qiang Liu |
author_sort |
Tao He |
title |
Greenland surface albedo changes in July 1981–2012 from satellite observations |
title_short |
Greenland surface albedo changes in July 1981–2012 from satellite observations |
title_full |
Greenland surface albedo changes in July 1981–2012 from satellite observations |
title_fullStr |
Greenland surface albedo changes in July 1981–2012 from satellite observations |
title_full_unstemmed |
Greenland surface albedo changes in July 1981–2012 from satellite observations |
title_sort |
greenland surface albedo changes in july 1981–2012 from satellite observations |
publisher |
IOP Publishing |
publishDate |
2013 |
url |
https://doi.org/10.1088/1748-9326/8/4/044043 https://doaj.org/article/aefad5fca7564eda807e9506758a08a1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Environmental Research Letters, Vol 8, Iss 4, p 044043 (2013) |
op_relation |
https://doi.org/10.1088/1748-9326/8/4/044043 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/8/4/044043 1748-9326 https://doaj.org/article/aefad5fca7564eda807e9506758a08a1 |
op_doi |
https://doi.org/10.1088/1748-9326/8/4/044043 |
container_title |
Environmental Research Letters |
container_volume |
8 |
container_issue |
4 |
container_start_page |
044043 |
_version_ |
1776200581935792128 |