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<!DOCTYPE html> <html class="client-nojs" lang="en" dir="ltr"> <head> <meta charset="UTF-8"/> <title>GLIMS Glacier Database - OpenStreetMap Wiki</title> <script>document.documentElement.className="client-js";RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"9b871bb0d3b32444e34d49cb","wgCSPNonce":false,"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"GLIMS_Glacier_Database","wgTitle":"GLIMS Glacier Database","wgCurRevisionId":2151883,"wgRevisionId":2151883,"wgArticleId":104414,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Data sources","Import"],"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"GLIMS_Glacier_Database","wgRelevantArticleId":104414,"wgIsProbablyEditable":false,"wgRelevantPageIsProbablyEditable":false,"wgRestrictionEdit":[],"wgRestrictionMove":[], "wgMFDisplayWikibaseDescriptions":{"search":false,"nearby":false,"watchlist":false,"tagline":false},"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgULSAcceptLanguageList":[],"wgULSCurrentAutonym":"English","wgVector2022PreviewPages":[],"wgEditSubmitButtonLabelPublish":false,"wgULSPosition":"personal","wgULSisCompactLinksEnabled":true};RLSTATE={"site.styles":"ready","user.styles":"ready","user":"ready","user.options":"loading","skins.vector.styles.legacy":"ready","ext.OsmWikibase-all":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.pt":"ready","wikibase.client.init":"ready"};RLPAGEMODULES=["site","mediawiki.page.ready","mediawiki.toc","skins.vector.legacy.js","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.gadget.taginfo","ext.gadget.dataitemlinks","ext.gadget.maps","ext.uls.compactlinks","ext.uls.interface"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.implement("user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"});});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.OsmWikibase-all%7Cext.uls.pt%7Cext.visualEditor.desktopArticleTarget.noscript%7Cskins.vector.styles.legacy%7Cwikibase.client.init&only=styles&skin=vector"/> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector"></script> <meta name="ResourceLoaderDynamicStyles" content=""/> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector"/> <noscript><link rel="stylesheet" href="/w/load.php?lang=en&modules=noscript&only=styles&skin=vector"/></noscript> <meta name="generator" content="MediaWiki 1.39.10"/> <meta name="format-detection" content="telephone=no"/> <meta name="viewport" content="width=1000"/> <link rel="icon" href="/favicon.ico"/> <link rel="search" type="application/opensearchdescription+xml" href="/w/opensearch_desc.php" title="OpenStreetMap Wiki (en)"/> <link rel="EditURI" type="application/rsd+xml" href="//wiki.openstreetmap.org/w/api.php?action=rsd"/> <link rel="license" href="/wiki/Wiki_content_license"/> <link rel="alternate" type="application/atom+xml" title="OpenStreetMap Wiki Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"/> </head> <body class="mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-GLIMS_Glacier_Database rootpage-GLIMS_Glacier_Database skin-vector action-view skin-vector-legacy vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-language-alert-in-sidebar-disabled vector-feature-sticky-header-disabled vector-feature-sticky-header-edit-disabled vector-feature-table-of-contents-disabled vector-feature-visual-enhancement-next-disabled"><div id="mw-page-base" class="noprint"></div> <div id="mw-head-base" class="noprint"></div> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice"></div> <div class="mw-indicators"> </div> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">GLIMS Glacier Database</span></h1> <div id="bodyContent" class="vector-body"> <div id="siteSub" class="noprint">From OpenStreetMap Wiki</div> <div id="contentSub"></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="en" dir="ltr"><div class="mw-parser-output"><p>The <b>Global Land Ice Measurements from Space</b> (GLIMS) is a global project of mapping glaciers. Primary data sources are maps, often quite old and newer ASTER and Landsat images. The data is acquired from many institutions around the world using different methods and different tools and the quality of data therefore varies significantly. </p> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Data_access"><span class="tocnumber">1</span> <span class="toctext">Data access</span></a></li> <li class="toclevel-1 tocsection-2"><a href="#License"><span class="tocnumber">2</span> <span class="toctext">License</span></a></li> <li class="toclevel-1 tocsection-3"><a href="#Data_structure"><span class="tocnumber">3</span> <span class="toctext">Data structure</span></a></li> <li class="toclevel-1 tocsection-4"><a href="#Data_quality"><span class="tocnumber">4</span> <span class="toctext">Data quality</span></a> <ul> <li class="toclevel-2 tocsection-5"><a href="#Vectorization_issues"><span class="tocnumber">4.1</span> <span class="toctext">Vectorization issues</span></a></li> </ul> </li> </ul> </div> <h2><span class="mw-headline" id="Data_access">Data access</span></h2> <p>The GLIMS database is hosted and maintained by the NSIDC, the main entry page there is: </p><p><a rel="nofollow" class="external free" href="http://nsidc.org/data/nsidc-0272.html">http://nsidc.org/data/nsidc-0272.html</a> </p><p>data access including the full database dump can be downloaded from </p><p><a rel="nofollow" class="external free" href="http://glims.colorado.edu/glacierdata/glacierdata.php">http://glims.colorado.edu/glacierdata/glacierdata.php</a> </p><p>There is also a separate domain <a rel="nofollow" class="external text" href="http://glims.org/">glims.org</a> containing various further information like: </p> <ul><li><a rel="nofollow" class="external text" href="http://glims.org/Publications/">Publications</a></li> <li><a rel="nofollow" class="external text" href="http://glims.colorado.edu/algorithms/algor.html">Algorithm descriptions</a></li> <li><a rel="nofollow" class="external text" href="http://glims.org/MapsAndDocs/downloaded_field_desc.html">Data fields</a></li></ul> <h2><span class="mw-headline" id="License">License</span></h2> <p>The NSIDC has confirmed that GLIMS data is in the public domain: </p> <pre>GLIMS data are public domain so you may use it how you wish. However, we recommend the following format for a general citation for the entire GLIMS data collection: Richard Armstrong, Bruce Raup, Siri Jodha Singh Khalsa, Roger Barry, Jeff Kargel, Chris Helm, Hugh Kieffer. 2005. GLIMS Glacier Database. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. Alternatively, if you download a specific data set, please use the appropriate citation(s) listed in the file called 'CITATIONS_nnnn.txt' (where nnnn is a number) for the specific GLIMS data you use. </pre> <p>There is also a newer citation from <a rel="nofollow" class="external free" href="http://www.glims.org/About/citations.html">http://www.glims.org/About/citations.html</a> </p> <pre>This file contains the citations for the data downloaded from the GLIMS Glacier Database. All data are in the longitude/latitude coordinate system on the WGS-84 datum. Field names in the downloaded file are documented at http://www.glims.org/MapsAndDocs/downloaded_field_desc.html When citing GLIMS data, please be sure to include all the information in the examples below, including the analyst's name. When referring to the GLIMS Initiative in general, please cite Raup, B.H.; A. Racoviteanu; S.J.S. Khalsa; C. Helm; R. Armstrong; Y. Arnaud (2007). "The GLIMS Geospatial Glacier Database: a New Tool for Studying Glacier Change". Global and Planetary Change 56:101--110. (doi:10.1016/j.gloplacha.2006.07.018) For the complete set of GLIMS glacier data (when using it for a global study of glaciers, for example), please cite GLIMS and NSIDC (2005, updated 2018): Global Land Ice Measurements from Space glacier database. Compiled and made available by the international GLIMS community and the National Snow and Ice Data Center, Boulder CO, U.S.A. DOI:10.7265/N5V98602 For Analysis_IDs in the range 309497--312426, the appropriate citation is Cogley, Graham (submitter); Kienholz, Christian; Miles, Evan; Sharp, Martin; Wyatt, F. (analyst(s)), 2015. GLIMS Glacier Database. Boulder, CO. National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5V98602 </pre> <h2><span class="mw-headline" id="Data_structure">Data structure</span></h2> <p>The full database dump is a huge shapefile containing ice and internal rock polygons separately. The shapefile also contains many duplicate polygons and the attributes seem partially broken. </p> <h2><span class="mw-headline" id="Data_quality">Data quality</span></h2> <p>The quality of the data is strongly varying due to the different sources and analysis methods used. The following is by initial assessment (completeness is only a rough estimate) </p> <table class="wikitable"> <tbody><tr> <th>region </th> <th>age of the data source </th> <th>completeness </th> <th>quality of the data </th> <th>better than current OSM </th></tr> <tr> <td>Alps (west) </td> <td>1998 </td> <td>no </td> <td>good except for poor vectorization </td> <td>partly </td></tr> <tr> <td>Alps (east) </td> <td>1985/~2000 </td> <td>no </td> <td>partly poor vectorization </td> <td>partly </td></tr> <tr> <td>Caucasus </td> <td>~2000 </td> <td>mostly </td> <td>good </td> <td>yes </td></tr> <tr> <td>Scandinavia </td> <td>~2000 </td> <td>yes </td> <td>good except for poor vectorization </td> <td>yes </td></tr> <tr> <td>Svalbard </td> <td>2000-2010 </td> <td>no </td> <td>good except for poor vectorization </td> <td>yes </td></tr> <tr> <td>Iceland </td> <td>~2000 </td> <td>yes </td> <td>good </td> <td>yes </td></tr> <tr> <td>Greenland </td> <td>~2000 </td> <td>no </td> <td>bad </td> <td>no </td></tr> <tr> <td>Pamir </td> <td>2001-2003 </td> <td>no </td> <td>good </td> <td>yes </td></tr> <tr> <td>Hindu Kush </td> <td>2000-2005 </td> <td>maybe </td> <td>good </td> <td>yes </td></tr> <tr> <td>Tibet </td> <td>1960-1975 </td> <td>unsure </td> <td>good but not very detailed </td> <td>yes </td></tr> <tr> <td>Karakoram (part of) </td> <td>2000-2005 </td> <td>no </td> <td>good </td> <td>in parts covered </td></tr> <tr> <td>Eastern Himalaya </td> <td>1960-1975 </td> <td>no </td> <td>good but not very detailed </td> <td>where covered </td></tr> <tr> <td>Tian Shan </td> <td>1959-1975 </td> <td>no </td> <td>good but not very detailed </td> <td>yes </td></tr> <tr> <td>Altai </td> <td>1959/2000-2005 </td> <td>no </td> <td>varying </td> <td>partly </td></tr> <tr> <td>Russian far east </td> <td>2000-2005 </td> <td>no </td> <td>good </td> <td>yes </td></tr> <tr> <td>Kerguelen </td> <td>1965/1994/2000 </td> <td>yes </td> <td>varying </td> <td>yes </td></tr> <tr> <td>Patagonia </td> <td>2007 </td> <td>no </td> <td>good </td> <td>only where covered </td></tr> <tr> <td>northern Peru (small area) </td> <td>2003 </td> <td>yes </td> <td>good except for poor vectorization </td> <td>yes </td></tr> <tr> <td>cont. US </td> <td>1950 </td> <td>yes </td> <td>moderate </td> <td>yes </td></tr> <tr> <td>Alaska </td> <td>2005-2010 </td> <td>no </td> <td>good except for poor vectorization </td> <td>where covered </td></tr> <tr> <td>Canada </td> <td>varying </td> <td>no </td> <td>varying </td> <td>mostly but probably worse than <a href="/wiki/Canvec" class="mw-redirect" title="Canvec">Canvec</a> </td></tr> </tbody></table> <h3><span class="mw-headline" id="Vectorization_issues">Vectorization issues</span></h3> <p>Some of the better data in GLIMS, notably that in northern Europe and Alaska, is hampered by poor vectorization of a raster data source. To properly import this into OSM would require newly vectorizing it which is especially difficult where there have been manual edits in the GLIMS data. Below is an example from southern Norway </p> <table> <tbody><tr> <td><a href="/wiki/File:Glims_example_norway1.png" class="image"><img alt="Glims example norway1.png" src="/w/images/thumb/e/e0/Glims_example_norway1.png/411px-Glims_example_norway1.png" decoding="async" width="411" height="480" srcset="/w/images/thumb/e/e0/Glims_example_norway1.png/617px-Glims_example_norway1.png 1.5x, /w/images/thumb/e/e0/Glims_example_norway1.png/822px-Glims_example_norway1.png 2x" /></a> </td> <td><a href="/wiki/File:Glims_example_norway2.png" class="image"><img alt="Glims example norway2.png" src="/w/images/thumb/e/ed/Glims_example_norway2.png/411px-Glims_example_norway2.png" decoding="async" width="411" height="480" srcset="/w/images/thumb/e/ed/Glims_example_norway2.png/617px-Glims_example_norway2.png 1.5x, /w/images/thumb/e/ed/Glims_example_norway2.png/822px-Glims_example_norway2.png 2x" /></a> </td></tr> <tr> <td>Original GLIMS data </td> <td>with newly vectorized outline but trying to keep the original internal division </td></tr></tbody></table>    </div> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://wiki.openstreetmap.org/w/index.php?title=GLIMS_Glacier_Database&oldid=2151883">https://wiki.openstreetmap.org/w/index.php?title=GLIMS_Glacier_Database&oldid=2151883</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Categories</a>: <ul><li><a href="/wiki/Category:Data_sources" title="Category:Data sources">Data sources</a></li><li><a href="/wiki/Category:Import" title="Category:Import">Import</a></li></ul></div></div> </div> </div> <div id="mw-navigation"> <h2>Navigation menu</h2> <div id="mw-head"> <nav id="p-personal" class="vector-menu mw-portlet mw-portlet-personal vector-user-menu-legacy" aria-labelledby="p-personal-label" role="navigation" > <h3 id="p-personal-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Personal tools</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="pt-uls" class="mw-list-item active"><a class="uls-trigger" href="#"><span>English</span></a></li><li id="pt-createaccount" class="mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=GLIMS+Glacier+Database" title="You are encouraged to create an account and log in; however, it is not mandatory"><span>Create account</span></a></li><li id="pt-login" class="mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=GLIMS+Glacier+Database" title="You are encouraged to log in; however, it is not mandatory [o]" accesskey="o"><span>Log in</span></a></li></ul> </div> </nav> <div id="left-navigation"> <nav id="p-namespaces" class="vector-menu mw-portlet mw-portlet-namespaces vector-menu-tabs vector-menu-tabs-legacy" aria-labelledby="p-namespaces-label" role="navigation" > <h3 id="p-namespaces-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Namespaces</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="ca-nstab-main" class="selected mw-list-item"><a href="/wiki/GLIMS_Glacier_Database" title="View the content page [c]" accesskey="c"><span>Page</span></a></li><li id="ca-talk" class="new mw-list-item"><a href="/w/index.php?title=Talk:GLIMS_Glacier_Database&action=edit&redlink=1" rel="discussion" title="Discussion about the content page (page does not exist) [t]" accesskey="t"><span>Discussion</span></a></li></ul> </div> </nav> <nav id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet vector-menu-dropdown" aria-labelledby="p-variants-label" role="navigation" > <input type="checkbox" id="p-variants-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-variants" class="vector-menu-checkbox" aria-labelledby="p-variants-label" /> <label id="p-variants-label" aria-label="Change language variant" class="vector-menu-heading " > <span class="vector-menu-heading-label">English</span> </label> <div class="vector-menu-content"> <ul class="vector-menu-content-list"></ul> </div> </nav> </div> <div id="right-navigation"> <nav id="p-views" class="vector-menu mw-portlet mw-portlet-views vector-menu-tabs vector-menu-tabs-legacy" aria-labelledby="p-views-label" role="navigation" > <h3 id="p-views-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Views</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="ca-view" class="selected mw-list-item"><a href="/wiki/GLIMS_Glacier_Database"><span>Read</span></a></li><li id="ca-viewsource" class="mw-list-item"><a href="/w/index.php?title=GLIMS_Glacier_Database&action=edit" title="This page is protected.
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