Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0152.1 |
Understanding the Equatorial Pacific Cold Tongue Time-Mean Heat Budget. Part I: Diagnostic Framework | |
Ray, Sulagna1,3; Wittenberg, Andrew T.2; Griffies, Stephen M.2; Zeng, Fanrong2 | |
2018-12-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:24页码:9965-9985 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Pacific equatorial cold tongue plays a leading role in Earth's strongest and most predictable climate signals. To illuminate the processes governing cold tongue temperatures, the upper-ocean heat budget is explored using the GFDL-FLOR coupled GCM (the forecast-oriented low ocean resolution version of CM2.5). Starting from the exact temperature budget for layers of time-varying thickness, the layer temperature tendency terms are studied using hourly-, daily-, and monthly-mean output from a 30-yr simulation driven by present-day radiative forcings. The budget is then applied to 1) a surface mixed layer whose temperature is highly correlated with SST, in which the air-sea heat flux is balanced mainly by downward diffusion of heat across the layer base, and 2) a thicker advective layer that subsumes most of the vertical mixing, in which the air-sea heat flux is balanced mainly by monthly-scale advection. The surface warming from shortwave fluxes and submonthly meridional advection and the subsurface cooling from monthly vertical advection are both shown to be essential to maintain the cold tongue thermal stratification against the destratifying effects of vertical mixing. Although layer undulations strongly mediate the tendency terms on diurnal-to-interannual scales, the 30-yr-mean tendencies are found to be well summarized by analogous budgets developed for stationary but spatially varying layers. The results are used to derive practical simplifications of the exact budget, to support the analyses in Part II of this paper, and to facilitate broader application of heat budget analyses when evaluating and comparing climate simulations. |
英文关键词 | Ocean dynamics Small scale processes Oceanic mixed layer Heat budgets fluxes Climate models Diagnostics |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450565300003 |
WOS关键词 | MODEL INTERCOMPARISON PROJECT ; SEA-SURFACE TEMPERATURE ; MIXED-LAYER DEPTH ; EL-NINO ; COUPLED MODEL ; OCEAN ; ENSO ; CLIMATE ; BALANCE ; REGION |
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/20910 |
专题 | 气候变化 |
作者单位 | 1.Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ 08544 USA; 2.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA; 3.Univ Connecticut, Dept Marine Sci, Groton, CT 06340 USA |
推荐引用方式 GB/T 7714 | Ray, Sulagna,Wittenberg, Andrew T.,Griffies, Stephen M.,et al. Understanding the Equatorial Pacific Cold Tongue Time-Mean Heat Budget. Part I: Diagnostic Framework[J]. JOURNAL OF CLIMATE,2018,31(24):9965-9985. |
APA | Ray, Sulagna,Wittenberg, Andrew T.,Griffies, Stephen M.,&Zeng, Fanrong.(2018).Understanding the Equatorial Pacific Cold Tongue Time-Mean Heat Budget. Part I: Diagnostic Framework.JOURNAL OF CLIMATE,31(24),9965-9985. |
MLA | Ray, Sulagna,et al."Understanding the Equatorial Pacific Cold Tongue Time-Mean Heat Budget. Part I: Diagnostic Framework".JOURNAL OF CLIMATE 31.24(2018):9965-9985. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论