| DOI: | 10.1002/2015GL064941
|
| 论文题名: | A global assessment of accelerations in surface mass transport |
| 作者: | Wu X.; Heflin M.B.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-9171
|
| EISSN: | 1944-8902
|
| 出版年: | 2015
|
| 卷: | 42, 期:16 | | 起始页码: | 6716
|
| 结束页码: | 6723
|
| 语种: | 英语
|
| 英文关键词: | geocenter motion
; GRACE gravity
; sea level
; surface mass transport
|
| Scopus关键词: | Acceleration
; Earth atmosphere
; Geodetic satellites
; Sea level
; Tracking (position)
; Geocenter motion
; Geographic boundaries
; Global Navigation Satellite Systems
; Gravity Recovery and Climate Experiment missions
; Negative acceleration
; Satellite laser ranging
; Spatiotemporal patterns
; Surface mass transport
; Gravitation
; acceleration
; annual variation
; global change
; GRACE
; gravity
; navigation
; satellite data
; satellite laser ranging
; sea level change
; spatiotemporal analysis
; water mass
; Alaska
; Antarctica
; Arctic
; Arctic Ocean
; Greenland
; United States
; West Antarctica
|
| 英文摘要: | Water mass transport in the Earth's dynamic surface layer of atmosphere, cryosphere, and hydrosphere driven by various global change processes has complex spatiotemporal patterns. Here we determine global patterns and regional mean values of accelerations in surface mass variations during the Gravity Recovery and Climate Experiment (GRACE) mission's data span from 2002.2 to 2015.0. GRACE gravity data are supplemented by surface deformation from 607 Global Navigation Satellite System stations, an ocean bottom pressure model, satellite laser ranging, and loose a priori knowledge on mass variation regimes incorporating high-resolution geographic boundaries. While Greenland and West Antarctica have strong negative accelerations, Alaska and the Arctic Ocean show significant positive accelerations. In addition, the accelerations are not constant in time with some regions showing considerable variability due to irregular interannual changes. No evidence of significant nonsteric mean sea level acceleration has been found, but the uncertainty is quite large. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941733943&doi=10.1002%2f2015GL064941&partnerID=40&md5=02cb03a2fe8e1b57dd3d40a271ae8f7d
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8787
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
|
| Recommended Citation: | |
Wu X.,Heflin M.B.. A global assessment of accelerations in surface mass transport[J]. Geophysical Research Letters,2015-01-01,42(16).
|
|
|