DOI: 10.1007/s00382-012-1300-9
Scopus记录号: 2-s2.0-84867103822
论文题名: Global response to solar radiation absorbed by phytoplankton in a coupled climate model
作者: Patara L. ; Vichi M. ; Masina S. ; Fogli P.G. ; Manzini E.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 2017-07-08 起始页码: 1951
结束页码: 1968
语种: 英语
英文关键词: Bio-physical interactions
; Climate
; Coupled climate model
; Marine biogeochemical model
; Ocean circulation
; Phytoplankton radiative heating
; Solar radiation
英文摘要: The global climate response to solar radiation absorbed by phytoplankton is investigated by performing multi-century simulations with a coupled ocean-atmosphere-biogeochemistry model. The absorption of solar radiation by phytoplankton increases radiative heating in the near-surface ocean and raises sea surface temperature (SST) by overall ~0.5°C. The resulting increase in evaporation enhances specific atmospheric humidity by 2-5%, thereby increasing the Earth's greenhouse effect and the atmospheric temperatures. The Hadley Cell exhibits a weakening and poleward expansion, therefore reducing cloudiness at subtropical-middle latitudes and increasing it at tropical latitudes except near the Equator. Higher SST at polar latitudes reduces sea ice cover and albedo, thereby increasing the high-latitude ocean absorption of solar radiation. Changes in the atmospheric baroclinicity cause a poleward intensification of mid-latitude westerly winds in both hemispheres. As a result, the North Atlantic Ocean meridional overturning circulation extends more northward, and the equatorward Ekman transport is enhanced in the Southern Ocean. The combination of local and dynamical processes decreases upper-ocean heat content in the Tropics and in the subpolar Southern Ocean, and increases it at middle latitudes. This study highlights the relevance of coupled ocean-atmosphere processes in the global climate response to phytoplankton solar absorption. Given that simulated impacts of phytoplankton on physical climate are within the range of natural climate variability, this study suggests the importance of phytoplankton as an internal constituent of the Earth's climate and its potential role in participating in its long-term climate adjustments. © 2012 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55136
Appears in Collections: 过去全球变化的重建
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作者单位: Centro Euro-Mediterraneo per i Cambiamenti Climatici (CMCC), Viale Aldo Moro 44, 40127 Bologna, Italy; Helmholtz Centre for Ocean Research Kiel (GEOMAR), Düsternbrooker Weg 20, 24105 Kiel, Germany; Max-Planck-Institut für Meteorologie, Hamburg, Germany; Centro Euro-Mediterraneo per i Cambiamenti Climatici (CMCC), Istituto Nazionale di Geofisica e Vulcanologia (INGV), Viale Aldo Moro 44, 40127 Bologna, Italy
Recommended Citation:
Patara L.,Vichi M.,Masina S.,et al. Global response to solar radiation absorbed by phytoplankton in a coupled climate model[J]. Climate Dynamics,2012-01-01,39(2017-07-08)