DOI: 10.1002/grl.50772
论文题名: Interannual variations in degree-2 Earth's gravity coefficients C 2,0, C2,2, and S2,2 reveal large-scale mass transfers of climatic origin
作者: Meyssignac B. ; Lemoine J.M. ; Cheng M. ; Cazenave A. ; Gégout P. ; Maisongrande P.
刊名: Geophysical Research Letters
ISSN: 0094-8696
EISSN: 1944-8427
出版年: 2013
卷: 40, 期: 15 起始页码: 4060
结束页码: 4065
语种: 英语
英文关键词: climatic mass transfers
; ENSO
; gravity coefficients C2,0, C 2,2, S2,2
; time-variable gravity field
Scopus关键词: Atmospheric reanalysis
; ENSO
; Gravity coefficients
; Interannual variation
; Satellite altimetry
; Satellite laser ranging datum
; Time-variable gravity
; Water mass transfer
; Atmospheric pressure
; Climatology
; Digital storage
; Mass transfer
; Oceanography
; Climate models
; annual variation
; climatic region
; El Nino-Southern Oscillation
; gravity field
; hydrological modeling
; mass transfer
; satellite altimetry
; timescale
; water mass
; water storage
; Amazon Basin
; Congo Basin
; Pacific Ocean
; Pacific Ocean (Tropical)
英文摘要: Several recent studies have shown evidences for large water transfers in the climate system at interannual to decadal time scales, in particular during El Niño-Southern Oscillation events. In this study, we investigate further these water transfers and their signature in the gravity field. We analyze variations of the low-degree spherical harmonics C2,0 (Earth's oblateness), C2,2, and S2,2 (eccentricity at the Earth's equator) from satellite laser ranging data during the 19 year period 1993-2012. We also estimate the water mass transfers in the climate system using satellite altimetry corrected for the steric effect, atmospheric reanalysis, and land hydrology models. We find a large signal in the water mass redistribution during the 1997/1998 El Niño which is consistent with an increase of the ocean mass in the tropical Pacific, a decrease of water storage in the Amazon Basin, and an increase of water storage in the Congo Basin. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881536052&doi=10.1002%2fgrl.50772&partnerID=40&md5=e28a06ea6b9ad972046ead067b4e497b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5960
Appears in Collections: 气候减缓与适应
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作者单位: Université de Toulouse/UPS (OMP-PCA), 14 Av. Edouard Belin, FR-31400 Toulouse, France
Recommended Citation:
Meyssignac B.,Lemoine J.M.,Cheng M.,et al. Interannual variations in degree-2 Earth's gravity coefficients C 2,0, C2,2, and S2,2 reveal large-scale mass transfers of climatic origin[J]. Geophysical Research Letters,2013-01-01,40(15).