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Fiedler, S. and Putrasahan, D. (2021). How Does the North Atlantic SST Pattern Respond to Anthropogenic Aerosols in the 1970s and 2000s? Geophys. Res. Lett., 48 (7). WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 1944-8007

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Abstract

We show how changes in the global distribution of anthropogenic aerosols favor different spatial patterns in the North Atlantic sea-surface temperature (NASST). The NASSTs largely show the expected decrease associated with the anthropogenic aerosols in the 1970s, but also an unusual warming response in the eastern sub-polar gyre, the region of the North Atlantic warming hole. The NASST response reversed for the anthropogenic aerosols in the 2000s against 1970s. The regional reduction in anthropogenic aerosols favored as follows: (1) a strengthening of the warming hole and (2) a NASST increase at high latitudes associated with changes in the coupled atmosphere-ocean dynamics. We found that the gyre component of the northward Atlantic heat transport in mid-to high latitudes is an important driver for the heat convergence associated with the NASST patterns. At least two-thirds of the NASST response in MPI-ESM1.2 is associated with aerosol-cloud interactions, highlighting the need to better understand them.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Fiedler, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Putrasahan, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-576174
DOI:	10.1029/2020GL092142
Journal or Publication Title:	Geophys. Res. Lett.
Volume:	48
Number:	7
Date:	2021
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	1944-8007
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEA-SURFACE TEMPERATURE; MULTIDECADAL OSCILLATION; OPTICAL-PROPERTIES; WARMING HOLE; VARIABILITY; CIRCULATION; MODEL; RAINFALL Multiple languages Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57617