CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo
We present a novel 28 yr dataset of Earth's black-sky surface albedo, derived from AVHRR instruments. The dataset is created using algorithms to separately derive the surface albedo for different land use areas globally. Snow, sea ice, open water and vegetation are all treated independently. Th...
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ftdoajarticles:oai:doaj.org/article:85cdef903412489cbd74a5d42e110520 2023-05-15T13:56:48+02:00 CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo A. Riihelä T. Manninen V. Laine K. Andersson F. Kaspar 2013-04-01T00:00:00Z https://doi.org/10.5194/acp-13-3743-2013 https://doaj.org/article/85cdef903412489cbd74a5d42e110520 EN eng Copernicus Publications http://www.atmos-chem-phys.net/13/3743/2013/acp-13-3743-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-3743-2013 1680-7316 1680-7324 https://doaj.org/article/85cdef903412489cbd74a5d42e110520 Atmospheric Chemistry and Physics, Vol 13, Iss 7, Pp 3743-3762 (2013) Physics QC1-999 Chemistry QD1-999 article 2013 ftdoajarticles https://doi.org/10.5194/acp-13-3743-2013 2022-12-31T15:59:07Z We present a novel 28 yr dataset of Earth's black-sky surface albedo, derived from AVHRR instruments. The dataset is created using algorithms to separately derive the surface albedo for different land use areas globally. Snow, sea ice, open water and vegetation are all treated independently. The product features corrections for the atmospheric effect in satellite-observed surface radiances, a BRDF correction for the anisotropic reflectance properties of natural surfaces, and a novel topography correction of geolocation and radiometric accuracy of surface reflectance observations over mountainous areas. The dataset is based on a homogenized AVHRR radiance timeseries. The product is validated against quality-controlled in situ observations of clear-sky surface albedo at various BSRN sites around the world. Snow and ice albedo retrieval validation is given particular attention using BSRN sites over Antarctica, Greenland Climate Network stations on the Greenland Ice Sheet (GrIS), as well as sea ice albedo data from the SHEBA and Tara expeditions. The product quality is found to be comparable to other previous long-term surface albedo datasets from AVHRR. Article in Journal/Newspaper Antarc* Antarctica Greenland Ice Sheet Sea ice Directory of Open Access Journals: DOAJ Articles Greenland Atmospheric Chemistry and Physics 13 7 3743 3762 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 A. Riihelä T. Manninen V. Laine K. Andersson F. Kaspar CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
We present a novel 28 yr dataset of Earth's black-sky surface albedo, derived from AVHRR instruments. The dataset is created using algorithms to separately derive the surface albedo for different land use areas globally. Snow, sea ice, open water and vegetation are all treated independently. The product features corrections for the atmospheric effect in satellite-observed surface radiances, a BRDF correction for the anisotropic reflectance properties of natural surfaces, and a novel topography correction of geolocation and radiometric accuracy of surface reflectance observations over mountainous areas. The dataset is based on a homogenized AVHRR radiance timeseries. The product is validated against quality-controlled in situ observations of clear-sky surface albedo at various BSRN sites around the world. Snow and ice albedo retrieval validation is given particular attention using BSRN sites over Antarctica, Greenland Climate Network stations on the Greenland Ice Sheet (GrIS), as well as sea ice albedo data from the SHEBA and Tara expeditions. The product quality is found to be comparable to other previous long-term surface albedo datasets from AVHRR. |
format |
Article in Journal/Newspaper |
author |
A. Riihelä T. Manninen V. Laine K. Andersson F. Kaspar |
author_facet |
A. Riihelä T. Manninen V. Laine K. Andersson F. Kaspar |
author_sort |
A. Riihelä |
title |
CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo |
title_short |
CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo |
title_full |
CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo |
title_fullStr |
CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo |
title_full_unstemmed |
CLARA-SAL: a global 28 yr timeseries of Earth's black-sky surface albedo |
title_sort |
clara-sal: a global 28 yr timeseries of earth's black-sky surface albedo |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/acp-13-3743-2013 https://doaj.org/article/85cdef903412489cbd74a5d42e110520 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarc* Antarctica Greenland Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctica Greenland Ice Sheet Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 13, Iss 7, Pp 3743-3762 (2013) |
op_relation |
http://www.atmos-chem-phys.net/13/3743/2013/acp-13-3743-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-3743-2013 1680-7316 1680-7324 https://doaj.org/article/85cdef903412489cbd74a5d42e110520 |
op_doi |
https://doi.org/10.5194/acp-13-3743-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
7 |
container_start_page |
3743 |
op_container_end_page |
3762 |
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