Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0241.1 |
Impacts of Atmospheric Reanalysis Uncertainty on Atlantic Overturning Estimates at 25 degrees N | |
Pillar, Helen R.1,3; Johnson, Helen L.1; Marshall, David P.2; Heimbach, Patrick3; Takao, So4 | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:21页码:8719-8744 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA |
英文摘要 | Atmospheric reanalyses are commonly used to force numerical ocean models, but despite large discrepancies reported between different products, the impact of reanalysis uncertainty on the simulated ocean state is rarely assessed. In this study, the impact of uncertainty in surface fluxes of buoyancy and momentum on the modeled Atlantic meridional overturning at 25 degrees N is quantified for the period January 1994-December 2011. By using an ocean-only climate model and its adjoint, the space and time origins of overturning uncertainty resulting from air-sea flux uncertainty are fully explored. Uncertainty in overturning induced by prior air-sea flux uncertainty can exceed 4 Sv (where 1 Sv [10(6) m(3) s(-1)) within 15 yr, at times exceeding the amplitude of the ensemble-mean overturning anomaly. A key result is that, on average, uncertainty in the overturning at 25 degrees N is dominated by uncertainty in the zonal wind at lags of up to 6.5 yr and by uncertainty in surface heat fluxes thereafter, with winter heat flux uncertainty over the Labrador Sea appearing to play a critically important role. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450854800002 |
WOS关键词 | CLIMATE VARIABILITY ; OCEAN CIRCULATION ; THERMOHALINE CIRCULATION ; MULTIDECADAL VARIABILITY ; INTERANNUAL VARIABILITY ; DATA ASSIMILATION ; DEEP CONVECTION ; LABRADOR SEA ; MODEL ; 20TH-CENTURY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19433 |
专题 | 气候变化 |
作者单位 | 1.Univ Oxford, Dept Earth Sci, Oxford, England; 2.Univ Oxford, Dept Phys, Oxford, England; 3.Univ Texas Austin, Inst Computat Engn & Sci, Austin, TX 78712 USA; 4.Imperial Coll London, London, England |
推荐引用方式 GB/T 7714 | Pillar, Helen R.,Johnson, Helen L.,Marshall, David P.,et al. Impacts of Atmospheric Reanalysis Uncertainty on Atlantic Overturning Estimates at 25 degrees N[J]. JOURNAL OF CLIMATE,2018,31(21):8719-8744. |
APA | Pillar, Helen R.,Johnson, Helen L.,Marshall, David P.,Heimbach, Patrick,&Takao, So.(2018).Impacts of Atmospheric Reanalysis Uncertainty on Atlantic Overturning Estimates at 25 degrees N.JOURNAL OF CLIMATE,31(21),8719-8744. |
MLA | Pillar, Helen R.,et al."Impacts of Atmospheric Reanalysis Uncertainty on Atlantic Overturning Estimates at 25 degrees N".JOURNAL OF CLIMATE 31.21(2018):8719-8744. |
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