DOI: 10.1175/JCLI-D-16-0339.1
Scopus记录号: 2-s2.0-84993985722
论文题名: Insights into Earth's energy imbalance from multiple sources
作者: Trenberth K.E. ; Fasullo J.T. ; von Schuckmann K. ; Cheng L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 20 起始页码: 7495
结束页码: 7505
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Budget control
; Hydrographic surveys
; Oceanography
; Statistics
; Atmosphere-land interactions
; Atmosphere-ocean interactions
; Diabatic heating
; Energy transport
; Radiation budget
; Earth atmosphere
; air-sea interaction
; Argo
; data assimilation
; diabatic process
; energy balance
; energy flow
; heat flow
; radiation budget
; sea surface temperature
; top of atmosphere
英文摘要: The current Earth's energy imbalance (EEI) can best be estimated from changes in ocean heat content (OHC), complemented by top-of-atmosphere (TOA) radiation measurements and an assessment of the small non-ocean components. Sustained observations from the Argo array of autonomous profiling floats enable near-global estimates of OHC since 2005, which reveal considerable cancellation of variations in the upper 300 m. An analysis of the monthly contributions to EEI from non-ocean components (land and ice) using the Community Earth System Model (CESM) Large Ensemble reveals standard deviations of 0.3-0.4 W m-2 (global); largest values occur in August, but values are below 0.75 W m-2 greater than 95% of the time. Global standard deviations of EEI of 0.64 W m-2 based on top-of-atmosphere observations therefore substantially constrain ocean contributions, given by the tendencies of OHC. Instead, monthly standard deviations of many Argo-based OHC tendencies are 6-13 W m-2, and nonphysical fluctuations are clearly evident. It is shown that an ocean reanalysis with multivariate dynamical data assimilation features much better agreement with TOA radiation, and 44% of the vertically integrated short-term OHC trend for 2005-14 of 0.8 ± 0.2 W m-2 (globally) occurs below 700-m depth. Largest warming occurs from 20° to 50°S, especially over the southern oceans, and near 40°N in all ocean analyses. The EEI is estimated to be 0.9 ± 0.3 W m-2 for 2005-14. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50185
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: National Center for Atmospheric Research, Boulder, CO, United States; Mercator Océan, Ramonville St. Agne, France; International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Trenberth K.E.,Fasullo J.T.,von Schuckmann K.,et al. Insights into Earth's energy imbalance from multiple sources[J]. Journal of Climate,2016-01-01,29(20)