DOI: 10.1175/JCLI-D-16-0237.1
Scopus记录号: 2-s2.0-84996772767
论文题名: Changes in sea salt emissions enhance ENSO variability
作者: Yang Y. ; Russell L.M. ; Lou S. ; Lamjiri M.A. ; Liu Y. ; Singh B. ; Ghan S.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 23 起始页码: 8575
结束页码: 8588
语种: 英语
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric pressure
; Atmospheric temperature
; Nickel
; Oceanography
; Precipitation (meteorology)
; Surface waters
; Tropics
; Wind
; Wind effects
; Aerosol optical depths
; Climate variability
; Convective precipitation
; ENSO
; Interannual variation
; Precipitation variability
; Sea surface temperature (SST)
; Tropical Pacific ocean
; Climatology
英文摘要: Two 150-yr preindustrial simulations with and without interactive sea salt emissions from the Community Earth System Model (CESM) are performed to quantify the interactions between sea salt emissions and El Niño-Southern Oscillation (ENSO). Variations in sea salt emissions over the tropical Pacific Ocean are affected by changing wind speed associated with ENSO variability. ENSO-induced interannual variations in sea salt emissions result in decreasing (increasing) aerosol optical depth (AOD) by 0.03 over the equatorial central-eastern (western) Pacific Ocean during El Niño events compared to those during La Niña events. These changes in AOD further increase (decrease) radiative fluxes into the atmosphere by +0.2 (-0.4) W m-2 over the tropical eastern (western) Pacific. Thereby, sea surface temperature increases (decreases) by 0.2-0.4 K over the tropical eastern (western) Pacific Ocean during El Niño compared to La Niña events and enhances ENSO variability by 10%. The increase in ENSO amplitude is a result of systematic heating (cooling) during the warm (cold) phase of ENSO in the eastern Pacific. Interannual variations in sea salt emissions then produce the anomalous ascent (subsidence) over the equatorial eastern (western) Pacific between El Niño and La Niña events, which is a result of heating anomalies. Owing to variations in sea salt emissions, the convective precipitation is enhanced by 0.6-1.2 mm day-1 over the tropical central-eastern Pacific Ocean and weakened by 0.9-1.5 mm day-1 over the Maritime Continent during El Niño compared to La Niña events, enhancing the precipitation variability over the tropical Pacific. © 2016 American Meteorological Society.
资助项目: NSF, National Science Foundation
; NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50329
Appears in Collections: 气候变化事实与影响
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作者单位: Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Atmospheric Science and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States
Recommended Citation:
Yang Y.,Russell L.M.,Lou S.,et al. Changes in sea salt emissions enhance ENSO variability[J]. Journal of Climate,2016-01-01,29(23)