DOI: 10.1002/grl.50240
论文题名: Variability in the surface temperature and melt extent of the Greenland ice sheet from MODIS
作者: Hall D.K. ; Comiso J.C. ; Digirolamo N.E. ; Shuman C.A. ; Box J.E. ; Koenig L.S.
刊名: Geophysical Research Letters
ISSN: 0094-9031
EISSN: 1944-8762
出版年: 2013
卷: 40, 期: 10 起始页码: 2114
结束页码: 2120
语种: 英语
英文关键词: Greenland melt
; Greenland surface temperature
; MODIS
Scopus关键词: Greenland
; Greenland Ice Sheet
; Ice sheet
; Mass loss
; Moderate resolution imaging spectroradiometer
; MODIS
; Surface temperatures
; Atmospheric temperature
; Image reconstruction
; Radiometers
; Surface properties
; Glaciers
; ice sheet
; MODIS
; satellite data
; satellite imagery
; surface temperature
; temperature effect
; Arctic
; Greenland
; Greenland Ice Sheet
英文摘要: Satellite-derived moderate-resolution imaging spectroradiometer (MODIS) ice-surface temperature (IST) of the Greenland ice sheet shows a positive trend and two major melt events from 2000 to present. IST increased by ∼0.55 ± 0.44°C/decade, with the greatest increase (∼0.95 ± 0.44°C/decade) found in northwestern Greenland where coastal temperatures and mass loss are also increasing and outlet glaciers are accelerating. IST shows the highest rates of increase during summer (∼1.35 ± 0.47°C/decade) and winter (∼1.30 ± 1.53°C/decade), followed by spring (∼0.60 ± 0.98°C/decade). In contrast, a decrease in IST was found in the autumn (∼-1.49 ± 1.20°C/decade). The IST trends in this work are not statistically significant with the exception of the trend in northwestern Greenland. Major surface melt (covering 80% or more of the ice sheet) occurred during the 2002 and 2012 melt seasons where clear-sky measurements show a maximum melt of ∼87% and ∼95% of the ice sheet surface, respectively. In 2002, most of the extraordinary melt was ephemeral, whereas in 2012 the ice sheet not only experienced more total melt, but melt was more persistent, and the 2012 summer was the warmest in the MODIS record (-6.38 ± 3.98°C). Our data show that major melt events may not be particularly rare during the present period of ice sheet warming. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879959690&doi=10.1002%2fgrl.50240&partnerID=40&md5=82f45f776469ea41b4c1f44a40b15fe2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6295
Appears in Collections: 气候减缓与适应
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作者单位: Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Recommended Citation:
Hall D.K.,Comiso J.C.,Digirolamo N.E.,et al. Variability in the surface temperature and melt extent of the Greenland ice sheet from MODIS[J]. Geophysical Research Letters,2013-01-01,40(10).