A Reconciled Estimate of Glacier Contributions to Sea Level Rise: 2003 to 2009

TitleA Reconciled Estimate of Glacier Contributions to Sea Level Rise: 2003 to 2009
Publication TypeJournal Article
Year of Publication2013
AuthorsGardner AS, Moholdt G, Cogley JG, Wouters B, Arendt AA, Wahr J, Berthier E, Hock R, Pfeffer WT, Kaser G, Ligtenberg SRM, Bolch T, Sharp MJ, Hagen JO, van den Broeke MR, Paul F
JournalScience
Volume340
Pagination852-857
Date Published2013/05
Type of ArticleArticle
ISBN Number0036-8075
Accession NumberWOS:000318997400041
Keywordsamerica; caps; greenland; icesat laser altimetry; mass-balance
Abstract

Glaciers distinct from the Greenland and Antarctic Ice Sheets are losing large amounts of water to the world's oceans. However, estimates of their contribution to sea level rise disagree. We provide a consensus estimate by standardizing existing, and creating new, mass-budget estimates from satellite gravimetry and altimetry and from local glaciological records. In many regions, local measurements are more negative than satellite-based estimates. All regions lost mass during 2003-2009, with the largest losses from Arctic Canada, Alaska, coastal Greenland, the southern Andes, and high-mountain Asia, but there was little loss from glaciers in Antarctica. Over this period, the global mass budget was -259 +/- 28 gigatons per year, equivalent to the combined loss from both ice sheets and accounting for 29 +/- 13% of the observed sea level rise.

DOI10.1126/science.1234532
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