| DOI: | 10.1002/grl.50881
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| 论文题名: | Greenland mass variation from time-variable gravity in the absence of GRACE |
| 作者: | Baur O.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8683
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| EISSN: | 1944-8414
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| 出版年: | 2013
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| 卷: | 40, 期:16 | | 起始页码: | 4289
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| 结束页码: | 4293
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| 语种: | 英语
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| 英文关键词: | CHAMP
; GRACE
; Greenland mass balance
; point-mass modeling
; time-variable gravity
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| Scopus关键词: | CHAMP
; GRACE
; Grace satellites
; Ground stations
; Mass balance
; Mass variations
; Surface height
; Time-variable gravity
; Geodetic satellites
; Orbits
; Gravitation
; CHAMP
; coast
; deglaciation
; GPS
; GRACE
; gravity
; ice
; mass balance
; satellite data
; surface
; Arctic
; Greenland
|
| 英文摘要: | In a recent paper, the authors succeeded in the inference of time-variable gravity from orbit analysis of the CHAMP satellite. The authors demonstrated the potential of the adopted methods by validation against GRACE data and surface height changes from GPS ground stations. This paper presents the capability of orbit analysis for the spatiotemporal quantification of Greenland mass change trends. Based on CHAMP time-variable gravity fields from January 2003 to December 2009, we estimated the ice mass loss over the entire of Greenland to 246±10 Gt/yr. This result is in line with the findings from GRACE data analysis (223±10 Gt/yr) over the same period; the trend estimates differ by only 10%. Moreover, for some areas, the spatial mass variation patterns are in good agreement, pinpointing dominant deglaciation along the Greenland coastline. We conclude that orbit analysis of low-Earth orbiting spacecraft is suitable to assess Greenland mass balance in the absence of the GRACE satellites. Key Points Greenland basin-wide mass trends from CHAMP and GRACE differ by only 10% The spatial mass-variation patterns are partly in good agreement We confirm that orbit analysis is able to bridge from GRACE to GRACE follow-on. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883147202&doi=10.1002%2fgrl.50881&partnerID=40&md5=24d6a249b24e0fcb01a38acb3e735632
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5947
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, AT-8042 Graz, Austria
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| Recommended Citation: | |
Baur O.. Greenland mass variation from time-variable gravity in the absence of GRACE[J]. Geophysical Research Letters,2013-01-01,40(16).
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