DOI: 10.1016/j.quascirev.2016.10.017
Scopus记录号: 2-s2.0-84994846007
论文题名: A paleo-perspective on ocean heat content: Lessons from the Holocene and Common Era
作者: Rosenthal Y. ; Kalansky J. ; Morley A. ; Linsley B.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 155 起始页码: 1
结束页码: 12
语种: 英语
英文关键词: Coral
; Foraminifera
; Holocene
; Mg/Ca
; Ocean heat content (OHC)
Scopus关键词: Atmospheric radiation
; Atmospheric temperature
; Budget control
; Earth (planet)
; Enthalpy
; Heat exchangers
; Reservoirs (water)
; Sensitivity analysis
; Temperature
; Coral
; Foraminifera
; Holocene thermal maximums
; Holocenes
; Medieval climate anomalies
; Northeastern Atlantic
; Ocean heat content
; Radiative perturbation
; Oceanography
; air-sea interaction
; calcium
; coral reef
; energy budget
; foraminifera
; heat flux
; Holocene
; intermediate water
; magnesium
; paleoenvironment
; proxy climate record
; radiative forcing
; sea surface temperature
; temperature anomaly
; temperature gradient
; Atlantic Ocean
; Atlantic Ocean (Northeast)
; Pacific Ocean
; Pacific Ocean (Equatorial)
; Anthozoa
; Foraminifera
英文摘要: The ocean constitutes the largest heat reservoir in the Earth's energy budget and thus exerts a major influence on its climate. Instrumental observations show an increase in ocean heat content (OHC) associated with the increase in greenhouse emissions. Here we review proxy records of intermediate water temperatures from sediment cores and corals in the equatorial Pacific and northeastern Atlantic Oceans, spanning 10,000 years beyond the instrumental record. These records suggests that intermediate waters were 1.5–2 °C warmer during the Holocene Thermal Maximum than in the last century. Intermediate water masses cooled by 0.9 °C from the Medieval Climate Anomaly to the Little Ice Age. These changes are significantly larger than the temperature anomalies documented in the instrumental record. The implied large perturbations in OHC and Earth's energy budget are at odds with very small radiative forcing anomalies throughout the Holocene and Common Era. We suggest that even very small radiative perturbations can change the latitudinal temperature gradient and strongly affect prevailing atmospheric wind systems and hence air-sea heat exchange. These dynamic processes provide an efficient mechanism to amplify small changes in insolation into relatively large changes in OHC. Over long time periods the ocean's interior acts like a capacitor and builds up large (positive and negative) heat anomalies that can mitigate or amplify small radiative perturbations as seen in the Holocene trend and Common Era anomalies, respectively. Evidently the ocean's interior is more sensitive to small external forcings than the global surface ocean because of the high sensitivity of heat exchange in the high-latitudes to climate variations. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59353
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Department of Marine and Coastal Science and Department of Earth and Planetary Sciences, Rutgers University, United States; Scripps Institution of Oceanography, University of California San Diego, United States; School of Geography and Archaeology, National University of Ireland Galway, Galway, Ireland; Lamont-Doherty Earth Observatory of Columbia University, New York, NY, United States
Recommended Citation:
Rosenthal Y.,Kalansky J.,Morley A.,et al. A paleo-perspective on ocean heat content: Lessons from the Holocene and Common Era[J]. Quaternary Science Reviews,2017-01-01,155