DOI: 10.1002/grl.50278
论文题名: Contribution of Icelandic ice caps to sea level rise: Trends and variability since the Little Ice Age
作者: Björnsson H. ; Pálsson F. ; Gudmundsson S. ; Magnússon E. ; Adalgeirsdõttir G. ; Jõhannesson T. ; Berthier E. ; Sigurdsson O. ; Thorsteinsson T.
刊名: Geophysical Research Letters
ISSN: 0094-9165
EISSN: 1944-8896
出版年: 2013
卷: 40, 期: 8 起始页码: 1546
结束页码: 1550
语种: 英语
英文关键词: albedo-reducing impact of volcanic eruptions
; glacier mass balance measurmenets and modelling
; post Little Ice Age climate fluctuations
; sea level rise
Scopus关键词: Airborne observations
; Climate fluctuations
; Digital elevation model
; Glacier mass balance
; Interannual variability
; Sea level rise
; Surface mass balance
; Volcanic eruptions
; Sea level
; Snow
; Solar radiation
; Volcanoes
; Ice
; air temperature
; annual variation
; climate variation
; digital elevation model
; ice cap
; Little Ice Age
; mass balance
; nineteenth century
; precipitation (climatology)
; satellite imagery
; sea level change
; Iceland
英文摘要: In total, Icelandic ice caps contain ∼3600 km3 of ice, which if melted would raise sea level by ∼1 cm. Here, we present an overview of mass changes of Icelandic ice masses since the end of the 19th century. They have both gained and lost mass during this period. Changes in ice volume have been estimated both through surface mass balance measurements (performed annually since ∼1990) and differencing of digital elevation models derived from various satellite and airborne observations. While the glaciers showed little mass loss as the 20th century began, losses increased rapidly after 1925, peaked in the 1930s and 1940s, and remained significant until the 1960s. After being near-zero or even positive during the 1980s and early 1990s, glacier mass budgets declined considerably, and have since the mid-1990s shown an average annual loss of 9.5±1.5 Gt a-1, contributing ∼0.03 mm a-1 to sea level rise. Since 1995 interannual variability in mass loss is high, ranging from 2.7 to 25.3±1.5 Gt a-1, corresponding to surface mass balances of -0.2 to -2.2 ± 0.15 m we a-1. This variability is driven by climate fluctuations and also by transient reduction of albedo due to volcanic eruptions. Key Points Icelandic ice caps both gained and lost mass since end of the 19th century mass variability driven by climate and temporary volcanic events mass balance variations relate to air temperature rather than precipitation. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877969876&doi=10.1002%2fgrl.50278&partnerID=40&md5=2a80ad0088fb4d7670d8c3ff588e7f37
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6429
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Earth Sciences, Askja, University of Iceland, Sturlugata 7, Reykjavík, IS101, Iceland
Recommended Citation:
Björnsson H.,Pálsson F.,Gudmundsson S.,et al. Contribution of Icelandic ice caps to sea level rise: Trends and variability since the Little Ice Age[J]. Geophysical Research Letters,2013-01-01,40(8).