Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13
Glacier area changes on the Tibetan Plateau were studied in different drainage basins based on Landsat satellite images from three epochs: 263 in the mid-1970s, 150 in 1999–2002 and 148 in 2013/14. Three mosaics (M1976, M2001 and M2013) with minimal cloud and snow cover were constructed, and the unc...
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Cambridge University Press
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ftdoajarticles:oai:doaj.org/article:c9bee2f502fe4a72852f934885ac81b6 2023-05-15T16:57:33+02:00 Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13 QINGHUA YE JIBIAO ZONG LIDE TIAN J. GRAHAM COGLEY CHUNQIAO SONG WANQIN GUO 2017-04-01T00:00:00Z https://doi.org/10.1017/jog.2016.137 https://doaj.org/article/c9bee2f502fe4a72852f934885ac81b6 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143016001374/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2016.137 0022-1430 1727-5652 https://doaj.org/article/c9bee2f502fe4a72852f934885ac81b6 Journal of Glaciology, Vol 63, Pp 273-287 (2017) Glacier area changes Tibetan Plateau interior drainage basins external drainage basins glacier data Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2017 ftdoajarticles https://doi.org/10.1017/jog.2016.137 2023-03-12T01:30:59Z Glacier area changes on the Tibetan Plateau were studied in different drainage basins based on Landsat satellite images from three epochs: 263 in the mid-1970s, 150 in 1999–2002 and 148 in 2013/14. Three mosaics (M1976, M2001 and M2013) with minimal cloud and snow cover were constructed, and the uncertainty due to each epoch having a finite span was accounted for. Glacier outlines (TPG1976, TPG2001 and TPG2013) were digitized manually with guidance from the SRTM DEM v4.1 and Google Earth imagery. To achieve complete multi-temporal coverage in a reasonable time, only debris-free ice was delineated. Area mapping uncertainty was evaluated at three study sites, Mount Qomolangma (Everest), Mount Naimona'Nyi, Mount Geladandong, where the largest differences between present and earlier measurements were within ~±4%. Area differences with previous inventories ranged from −19.6% (TPG1976 minus the first Chinese Glacier Inventory) to −3.6% and −1.1% (TPG2013 and TPG2001, respectively minus the second Chinese Glacier Inventory), while the difference TPG2001 minus the GAMDAM Glacier Inventory was +10.4%. Glacier area on the plateau decreased from 44 366 ± 2827 km2 (1.7% of the study area) in the 1970s to 42 210 ± 1621 km2 in 2001 and 41 137 ± 1616 km2 in 2013. Shrinkage was faster in external drainage basins of the southeast than in the interior basins of the northwest, from a maximum of −0.43% a−1 (−1.60% a−1 during 1994–2013) in the Mekong catchment down to a minimum of −0.12% a−1 in the Tarim interior drainage. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 63 238 273 287 |
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ftdoajarticles |
language |
English |
topic |
Glacier area changes Tibetan Plateau interior drainage basins external drainage basins glacier data Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Glacier area changes Tibetan Plateau interior drainage basins external drainage basins glacier data Environmental sciences GE1-350 Meteorology. Climatology QC851-999 QINGHUA YE JIBIAO ZONG LIDE TIAN J. GRAHAM COGLEY CHUNQIAO SONG WANQIN GUO Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13 |
topic_facet |
Glacier area changes Tibetan Plateau interior drainage basins external drainage basins glacier data Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Glacier area changes on the Tibetan Plateau were studied in different drainage basins based on Landsat satellite images from three epochs: 263 in the mid-1970s, 150 in 1999–2002 and 148 in 2013/14. Three mosaics (M1976, M2001 and M2013) with minimal cloud and snow cover were constructed, and the uncertainty due to each epoch having a finite span was accounted for. Glacier outlines (TPG1976, TPG2001 and TPG2013) were digitized manually with guidance from the SRTM DEM v4.1 and Google Earth imagery. To achieve complete multi-temporal coverage in a reasonable time, only debris-free ice was delineated. Area mapping uncertainty was evaluated at three study sites, Mount Qomolangma (Everest), Mount Naimona'Nyi, Mount Geladandong, where the largest differences between present and earlier measurements were within ~±4%. Area differences with previous inventories ranged from −19.6% (TPG1976 minus the first Chinese Glacier Inventory) to −3.6% and −1.1% (TPG2013 and TPG2001, respectively minus the second Chinese Glacier Inventory), while the difference TPG2001 minus the GAMDAM Glacier Inventory was +10.4%. Glacier area on the plateau decreased from 44 366 ± 2827 km2 (1.7% of the study area) in the 1970s to 42 210 ± 1621 km2 in 2001 and 41 137 ± 1616 km2 in 2013. Shrinkage was faster in external drainage basins of the southeast than in the interior basins of the northwest, from a maximum of −0.43% a−1 (−1.60% a−1 during 1994–2013) in the Mekong catchment down to a minimum of −0.12% a−1 in the Tarim interior drainage. |
format |
Article in Journal/Newspaper |
author |
QINGHUA YE JIBIAO ZONG LIDE TIAN J. GRAHAM COGLEY CHUNQIAO SONG WANQIN GUO |
author_facet |
QINGHUA YE JIBIAO ZONG LIDE TIAN J. GRAHAM COGLEY CHUNQIAO SONG WANQIN GUO |
author_sort |
QINGHUA YE |
title |
Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13 |
title_short |
Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13 |
title_full |
Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13 |
title_fullStr |
Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13 |
title_full_unstemmed |
Glacier changes on the Tibetan Plateau derived from Landsat imagery: mid-1970s – 2000–13 |
title_sort |
glacier changes on the tibetan plateau derived from landsat imagery: mid-1970s – 2000–13 |
publisher |
Cambridge University Press |
publishDate |
2017 |
url |
https://doi.org/10.1017/jog.2016.137 https://doaj.org/article/c9bee2f502fe4a72852f934885ac81b6 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 63, Pp 273-287 (2017) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143016001374/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2016.137 0022-1430 1727-5652 https://doaj.org/article/c9bee2f502fe4a72852f934885ac81b6 |
op_doi |
https://doi.org/10.1017/jog.2016.137 |
container_title |
Journal of Glaciology |
container_volume |
63 |
container_issue |
238 |
container_start_page |
273 |
op_container_end_page |
287 |
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1766049119765266432 |