globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-15-0801.1
Scopus记录号: 2-s2.0-84977513531
论文题名:
Sensitivity of global upper-ocean heat content estimates to mapping methods, XBT bias corrections, and baseline climatologies
作者: Boyer T.; Domingues C.M.; Good S.A.; Johnson G.C.; Lyman J.M.; Ishii M.; Gouretski V.; Willis J.K.; Antonov J.; Wijffels S.; Church J.A.; Cowley R.; Bindoff N.L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期:13
起始页码: 4817
结束页码: 4842
语种: 英语
Scopus关键词: Climatology ; Enthalpy ; Mapping ; Oceanography ; Climate variability ; Heat budgets/fluxes ; Oceanic variabilities ; Trends ; Variability ; Uncertainty analysis ; baseline conditions ; climate variation ; climatology ; correction ; heat budget ; heat flux ; mapping method ; meteorology ; sensitivity analysis ; trend analysis
英文摘要: Ocean warming accounts for the majority of the earth's recent energy imbalance. Historic ocean heat content (OHC) changes are important for understanding changing climate. Calculations of OHC anomalies (OHCA) from in situ measurements provide estimates of these changes. Uncertainties in OHCA estimates arise from calculating global fields from temporally and spatially irregular data (mapping method), instrument bias corrections, and the definitions of a baseline climatology from which anomalies are calculated. To investigate sensitivity of OHCA estimates for the upper 700 m to these different factors, the same quality-controlled dataset is used by seven groups and comparisons are made. Two time periods (1970-2008 and 1993-2008) are examined. Uncertainty due to the mapping method is 16.5 ZJ for 1970-2008 and 17.1 ZJ for 1993-2008 (1 ZJ = 1 × 1021 J). Uncertainty due to instrument bias correction varied from 8.0 to 17.9 ZJ for 1970-2008 and from 10.9 to 22.4 ZJ for 1993-2008, depending on mapping method. Uncertainty due to baseline mean varied from 3.5 to 14.5 ZJ for 1970-2008 and from 2.7 to 9.8 ZJ for 1993-2008, depending on mapping method and offsets. On average mapping method is the largest source of uncertainty. The linear trend varied from 1.3 to 5.0 ZJ yr-1 (0.08-0.31 W m-2) for 1970-2008 and from 1.5 to 9.4 ZJ yr-1 (0.09-0.58 W m-2) for 1993-2008, depending on method, instrument bias correction, and baseline mean. Despite these complications, a statistically robust upper-ocean warming was found in all cases for the full time period. © 2016 American Meteorological Society.
资助项目: ARC, Australian Research Council ; Caltech, California Institute of Technology ; DOC, U.S. Department of Commerce ; NASA, National Aeronautics and Space Administration ; NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50322
Appears in Collections:气候变化事实与影响

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作者单位: NOAA/National Centers for Environmental Information, Silver Spring, MD, United States; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; Antarctic Climate and Ecosystems Cooperative Research Institute, Hobart, TAS, Australia; Centre of Excellence for Climate System Science, Australian Research Council, Hobart, TAS, Australia; Met Office, Exeter, United Kingdom; NOAA/Pacific Marine Environmental Laboratory, Seattle, WA, United States; Joint Institute for Marine and Atmospheric Research, University of Hawai'i at Manoa, Honolulu, HI, United States; Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan; Center for Earth System Research and Sustainability, CliSAP, Integrated Climate Data Center, University of Hamburg, Hamburg, Germany; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; University Corporation for Atmospheric Research, Boulder, CO, United States; Commonwealth Scientific and Industrial Research Organization, Hobart, TAS, Australia

Recommended Citation:
Boyer T.,Domingues C.M.,Good S.A.,et al. Sensitivity of global upper-ocean heat content estimates to mapping methods, XBT bias corrections, and baseline climatologies[J]. Journal of Climate,2016-01-01,29(13)
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