Journal Article

FZJ-2016-03522

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Climate change reduces warming potential of nitrous oxide by an enhanced Brewer-Dobson circulation

Kracher, D. (Corresponding author) ; Reick, C. H. ; Manzini, E. ; Schultz, M.FZJ* ; Stein, O.FZJ*

2016
Wiley Hoboken, NJ

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Please use a persistent id in citations: http://hdl.handle.net/2128/16071  doi:10.1002/2016GL068390

Abstract: The Brewer-Dobson circulation (BDC), which is an important driver of the stratosphere-troposphere exchange, is expected to accelerate with climate change. One particular consequence of this acceleration is the enhanced transport of nitrous oxide (N2O) from its sources at the Earth's surface toward its main sink region in the stratosphere, thus inducing a reduction in its lifetime. N2O is a potent greenhouse gas and the most relevant currently emitted ozone-depleting substance. Here we examine the implications of a reduced N2O lifetime in the context of climate change. We find a decrease in its global warming potential (GWP) and, due to a decline in the atmospheric N2O burden, also a reduction in its total radiative forcing. From the idealized transient global warming simulation we can identify linear regressions for N2O sink, lifetime, and GWP with temperature rise. Our findings are thus not restricted to a particular scenario.

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Contributing Institute(s):

1. Troposphäre (IEK-8)
2. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 243 - Tropospheric trace substances and their transformation processes (POF3-243) (POF3-243)
2. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)

Appears in the scientific report 2016

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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