globalchange  > 科学计划与规划
DOI: 10.1002/2015GL063296
论文题名:
Greenland 2012 melt event effects on CryoSat-2 radar altimetry
作者: Nilsson J.; Vallelonga P.; Simonsen S.B.; Sørensen L.S.; Forsberg R.; Dahl-Jensen D.; Hirabayashi M.; Goto-Azuma K.; Hvidberg C.S.; Kjær H.A.; Satow K.
刊名: Geophysical Research Letters
ISSN: 0094-9117
EISSN: 1944-8848
出版年: 2015
卷: 42, 期:10
起始页码: 3919
结束页码: 3926
语种: 英语
英文关键词: altimetry ; CryoSat-2 ; elevation change ; Greenland ; melt event
Scopus关键词: Radar ; Snow ; Stratigraphy ; Altimetry ; Cryosat ; Elevation change ; Greenland ; Greenland Ice Sheet ; Positive elevation ; Reflective surfaces ; Scattering property ; Ice ; CryoSat ; Eemian ; elevation ; radar altimetry ; satellite data ; signal ; snow ; waveform analysis ; Arctic ; Greenland ; Greenland Ice Sheet
英文摘要: CryoSat-2 data are used to study elevation changes over an area in the interior part of the Greenland Ice Sheet during the extreme melt event in July 2012. The penetration of the radar signal into dry snow depends heavily on the snow stratigraphy, and the rapid formation of refrozen ice layers can bias the surface elevations obtained from radar altimetry. We investigate the change in CryoSat-2 waveforms and elevation estimates over the melt event and interpret the findings by comparing in situ surface and snow pit observations from the North Greenland Eemian Ice Drilling Project camp. The investigation shows a major transition of scattering properties around the area, and an apparent elevation increase of 56 ± 26 cm is observed in reprocessed CryoSat-2 data. We suggest that this jump in elevation can be explained by the formation of a refrozen melt layer that raised the reflective surface, introducing a positive elevation bias. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931565745&doi=10.1002%2f2015GL063296&partnerID=40&md5=cdac2b701523ba4de63afd99671877c6
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8733
Appears in Collections:科学计划与规划
气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: DTU Space, National Space Institute, Technical University of Denmark, Lyngby, Denmark

Recommended Citation:
Nilsson J.,Vallelonga P.,Simonsen S.B.,et al. Greenland 2012 melt event effects on CryoSat-2 radar altimetry[J]. Geophysical Research Letters,2015-01-01,42(10).
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Nilsson J.]'s Articles
[Vallelonga P.]'s Articles
[Simonsen S.B.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Nilsson J.]'s Articles
[Vallelonga P.]'s Articles
[Simonsen S.B.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Nilsson J.]‘s Articles
[Vallelonga P.]‘s Articles
[Simonsen S.B.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.