Expansion of the Sahara Desert and shrinking of frozen land of the Arctic

Expansion of the Sahara Desert (SD) and greening of the Arctic tundra-glacier region (ArcTG) have been hot subjects under extensive investigations. However, quantitative and comprehensive assessments of the landform changes in these regions are lacking. Here we use both observations and climate-ecos...

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Published in:Scientific Reports
Main Authors: Liu, Ye, Xue, Yongkang
Format: Text
Language:English
Published: Nature Publishing Group UK 2020
Subjects:
Article
Arctic
Tundra
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7057959/
http://www.ncbi.nlm.nih.gov/pubmed/32139761
https://doi.org/10.1038/s41598-020-61085-0
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spelling ftpubmed:oai:pubmedcentral.nih.gov:7057959 2023-05-15T14:54:02+02:00 Expansion of the Sahara Desert and shrinking of frozen land of the Arctic Liu, Ye Xue, Yongkang 2020-03-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7057959/ http://www.ncbi.nlm.nih.gov/pubmed/32139761 https://doi.org/10.1038/s41598-020-61085-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7057959/ http://www.ncbi.nlm.nih.gov/pubmed/32139761 http://dx.doi.org/10.1038/s41598-020-61085-0 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-61085-0 2020-03-15T01:48:54Z Expansion of the Sahara Desert (SD) and greening of the Arctic tundra-glacier region (ArcTG) have been hot subjects under extensive investigations. However, quantitative and comprehensive assessments of the landform changes in these regions are lacking. Here we use both observations and climate-ecosystem models to quantify/project changes in the extents and boundaries of the SD and ArcTG based on climate and vegetation indices. It is found that, based on observed climate indices, the SD expands 8% and the ArcTG shrinks 16% during 1950–2015, respectively. SD southern boundaries advance 100 km southward, and ArcTG boundaries are displaced about 50 km poleward in 1950–2015. The simulated trends based on climate and vegetation indices show consistent results with some differences probably due to missing anthropogenic forcing and two-way vegetation-climate feedback effect in simulations. The projected climate and vegetation indices show these trends will continue in 2015–2050. Text Arctic Tundra PubMed Central (PMC) Arctic Scientific Reports 10 1
institution Open Polar
collection PubMed Central (PMC)
op_collection_id ftpubmed
language English
topic Article
spellingShingle Article
Liu, Ye
Xue, Yongkang
Expansion of the Sahara Desert and shrinking of frozen land of the Arctic
topic_facet Article
description Expansion of the Sahara Desert (SD) and greening of the Arctic tundra-glacier region (ArcTG) have been hot subjects under extensive investigations. However, quantitative and comprehensive assessments of the landform changes in these regions are lacking. Here we use both observations and climate-ecosystem models to quantify/project changes in the extents and boundaries of the SD and ArcTG based on climate and vegetation indices. It is found that, based on observed climate indices, the SD expands 8% and the ArcTG shrinks 16% during 1950–2015, respectively. SD southern boundaries advance 100 km southward, and ArcTG boundaries are displaced about 50 km poleward in 1950–2015. The simulated trends based on climate and vegetation indices show consistent results with some differences probably due to missing anthropogenic forcing and two-way vegetation-climate feedback effect in simulations. The projected climate and vegetation indices show these trends will continue in 2015–2050.
format Text
author Liu, Ye
Xue, Yongkang
author_facet Liu, Ye
Xue, Yongkang
author_sort Liu, Ye
title Expansion of the Sahara Desert and shrinking of frozen land of the Arctic
title_short Expansion of the Sahara Desert and shrinking of frozen land of the Arctic
title_full Expansion of the Sahara Desert and shrinking of frozen land of the Arctic
title_fullStr Expansion of the Sahara Desert and shrinking of frozen land of the Arctic
title_full_unstemmed Expansion of the Sahara Desert and shrinking of frozen land of the Arctic
title_sort expansion of the sahara desert and shrinking of frozen land of the arctic
publisher Nature Publishing Group UK
publishDate 2020
url http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7057959/
http://www.ncbi.nlm.nih.gov/pubmed/32139761
https://doi.org/10.1038/s41598-020-61085-0
geographic Arctic
geographic_facet Arctic
genre Arctic
Tundra
genre_facet Arctic
Tundra
op_relation http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7057959/
http://www.ncbi.nlm.nih.gov/pubmed/32139761
http://dx.doi.org/10.1038/s41598-020-61085-0
op_rights © The Author(s) 2020
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
op_rightsnorm CC-BY
op_doi https://doi.org/10.1038/s41598-020-61085-0
container_title Scientific Reports
container_volume 10
container_issue 1
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