Aerosol-forced multidecadal variations across all ocean basins in models and observations since 1920

Qin, Minhua; Dai, Aiguo; Hua, Wenjian

doi:10.1126/sciadv.abb0425

i

Aerosol-forced multidecadal variations across all ocean basins in models and observations since 1920

Supporting Files

2020
By Qin, Minhua ; Dai, Aiguo ; Hua, Wenjian

Details

Journal Title:

Science Advances
Personal Author:

Qin, Minhua ; Dai, Aiguo ; Hua, Wenjian
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office)
Description:

Earth's climate fluctuates considerably on decadal-multidecadal time scales, often causing large damages to our society and environment. These fluctuations usually result from internal dynamics, and many studies have linked them to internal climate modes in the North Atlantic and Pacific oceans. Here, we show that variations in volcanic and anthropogenic aerosols have caused in-phase, multidecadal SST variations since 1920 across all ocean basins. These forced variations resemble the Atlantic Multidecadal Oscillation (AMO) in time. Unlike the North Atlantic, where indirect and direct aerosol effects on surface solar radiation drive the multidecadal SST variations, over the tropical central and western Pacific atmospheric circulation response to aerosol forcing plays an important role, whereas aerosol-induced radiation change is small. Our new finding implies that AMO-like climate variations in Eurasia, North America, and other regions may be partly caused by the aerosol forcing, rather than being originated from the North Atlantic SST variations as previously thought.
Keywords:

Climate System Cmip5 Oscillation Patterns Rainfall Science Sea-surface Temperature Technology Variability Climate System Sea-surface Temperature
Source:

Sci Adv 6 (29), eabb0425. 10.1126/sciadv.abb0425
DOI:

https://doi.org/10.1126/sciadv.abb0425
Pubmed ID:

32832635
Pubmed Central ID:

PMC7439312
Document Type:

Journal Article
Funding:

Grant no. NA15OAR4310086 ; Grant no. NA18OAR4310425
Place as Subject:

Atlantic ; Pacific
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

urn:sha256:a269b3a2d9857d304abfd3c54be39a08e850def1bc92585b585cac4e896846cb
Download URL:

https://repository.library.noaa.gov/view/noaa/28683/noaa_28683_DS1.pdf
File Type:

[PDF - 3.62 MB ]

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