The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers
We present a new glacier inventory for high-mountain Asia named "Glacier Area Mapping for Discharge from the Asian Mountains" (GAMDAM). Glacier outlines were delineated manually using 356 Landsat ETM+ scenes in 226 path-row sets from the period 1999–2003, in conjunction with a digital elev...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2015
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-9-849-2015 http://www.the-cryosphere.net/9/849/2015/tc-9-849-2015.pdf https://doaj.org/article/fa85cfb8dc4b45388fea4f4b952f52ba |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:fa85cfb8dc4b45388fea4f4b952f52ba |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:fa85cfb8dc4b45388fea4f4b952f52ba 2023-05-15T18:32:23+02:00 The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers T. Nuimura A. Sakai K. Taniguchi H. Nagai D. Lamsal S. Tsutaki A. Kozawa Y. Hoshina S. Takenaka S. Omiya K. Tsunematsu P. Tshering K. Fujita 2015-05-01 https://doi.org/10.5194/tc-9-849-2015 http://www.the-cryosphere.net/9/849/2015/tc-9-849-2015.pdf https://doaj.org/article/fa85cfb8dc4b45388fea4f4b952f52ba en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-9-849-2015 http://www.the-cryosphere.net/9/849/2015/tc-9-849-2015.pdf https://doaj.org/article/fa85cfb8dc4b45388fea4f4b952f52ba undefined The Cryosphere, Vol 9, Iss 3, Pp 849-864 (2015) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.5194/tc-9-849-2015 2023-01-22T19:27:02Z We present a new glacier inventory for high-mountain Asia named "Glacier Area Mapping for Discharge from the Asian Mountains" (GAMDAM). Glacier outlines were delineated manually using 356 Landsat ETM+ scenes in 226 path-row sets from the period 1999–2003, in conjunction with a digital elevation model (DEM) and high-resolution Google EarthTM imagery. Geolocations are largely consistent between the Landsat imagery and DEM due to systematic radiometric and geometric corrections made by the United States Geological Survey. We performed repeated delineation tests and peer review of glacier outlines in order to maintain the consistency and quality of the inventory. Our GAMDAM glacier inventory (GGI) includes 87 084 glaciers covering a total area of 91 263 ± 13 689 km2 throughout high-mountain Asia. In the Hindu Kush–Himalaya range, the total glacier area in our inventory is 93% that of the ICIMOD (International Centre for Integrated Mountain Development) inventory. Discrepancies between the two regional data sets are due mainly to the effects of glacier shading. In contrast, our inventory represents significantly less surface area (−24%) than the recent global Randolph Glacier Inventory, version 4.0 (RGI), which includes 119 863 ± 9201 km2 for the entirety of high Asian mountains. Likely causes of this disparity include headwall definition, effects of exclusion of shaded glacier areas, glacier recession since the 1970s, and inclusion of seasonal snow cover in the source data of the RGI, although it is difficult to evaluate such effects quantitatively. Further rigorous peer review of GGI will both improve the quality of glacier inventory in high-mountain Asia and provide new opportunities to study Asian glaciers. Article in Journal/Newspaper The Cryosphere Unknown New Glacier ENVELOPE(162.400,162.400,-77.033,-77.033) The Cryosphere 9 3 849 864 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir T. Nuimura A. Sakai K. Taniguchi H. Nagai D. Lamsal S. Tsutaki A. Kozawa Y. Hoshina S. Takenaka S. Omiya K. Tsunematsu P. Tshering K. Fujita The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers |
topic_facet |
geo envir |
description |
We present a new glacier inventory for high-mountain Asia named "Glacier Area Mapping for Discharge from the Asian Mountains" (GAMDAM). Glacier outlines were delineated manually using 356 Landsat ETM+ scenes in 226 path-row sets from the period 1999–2003, in conjunction with a digital elevation model (DEM) and high-resolution Google EarthTM imagery. Geolocations are largely consistent between the Landsat imagery and DEM due to systematic radiometric and geometric corrections made by the United States Geological Survey. We performed repeated delineation tests and peer review of glacier outlines in order to maintain the consistency and quality of the inventory. Our GAMDAM glacier inventory (GGI) includes 87 084 glaciers covering a total area of 91 263 ± 13 689 km2 throughout high-mountain Asia. In the Hindu Kush–Himalaya range, the total glacier area in our inventory is 93% that of the ICIMOD (International Centre for Integrated Mountain Development) inventory. Discrepancies between the two regional data sets are due mainly to the effects of glacier shading. In contrast, our inventory represents significantly less surface area (−24%) than the recent global Randolph Glacier Inventory, version 4.0 (RGI), which includes 119 863 ± 9201 km2 for the entirety of high Asian mountains. Likely causes of this disparity include headwall definition, effects of exclusion of shaded glacier areas, glacier recession since the 1970s, and inclusion of seasonal snow cover in the source data of the RGI, although it is difficult to evaluate such effects quantitatively. Further rigorous peer review of GGI will both improve the quality of glacier inventory in high-mountain Asia and provide new opportunities to study Asian glaciers. |
format |
Article in Journal/Newspaper |
author |
T. Nuimura A. Sakai K. Taniguchi H. Nagai D. Lamsal S. Tsutaki A. Kozawa Y. Hoshina S. Takenaka S. Omiya K. Tsunematsu P. Tshering K. Fujita |
author_facet |
T. Nuimura A. Sakai K. Taniguchi H. Nagai D. Lamsal S. Tsutaki A. Kozawa Y. Hoshina S. Takenaka S. Omiya K. Tsunematsu P. Tshering K. Fujita |
author_sort |
T. Nuimura |
title |
The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers |
title_short |
The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers |
title_full |
The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers |
title_fullStr |
The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers |
title_full_unstemmed |
The GAMDAM glacier inventory: a quality-controlled inventory of Asian glaciers |
title_sort |
gamdam glacier inventory: a quality-controlled inventory of asian glaciers |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-849-2015 http://www.the-cryosphere.net/9/849/2015/tc-9-849-2015.pdf https://doaj.org/article/fa85cfb8dc4b45388fea4f4b952f52ba |
long_lat |
ENVELOPE(162.400,162.400,-77.033,-77.033) |
geographic |
New Glacier |
geographic_facet |
New Glacier |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 9, Iss 3, Pp 849-864 (2015) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-9-849-2015 http://www.the-cryosphere.net/9/849/2015/tc-9-849-2015.pdf https://doaj.org/article/fa85cfb8dc4b45388fea4f4b952f52ba |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-9-849-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
3 |
container_start_page |
849 |
op_container_end_page |
864 |
_version_ |
1766216491085070336 |