Search: id:"swepub:oai:lup.lub.lu.se:0e871197-60aa-4bb3-9a16-dfaa05e1a054" >
Positive feedback m...
Positive feedback mechanism between biogenic volatile organic compounds and the methane lifetime in future climates
-
- Boy, Michael (author)
- Lappeenranta University Of Technology (LUT),University of Helsinki
-
- Zhou, Putian (author)
- University of Helsinki
-
- Kurtén, Theo (author)
- University of Helsinki
-
show more...
-
- Chen, Dean (author)
- University of Helsinki
-
- Xavier, Carlton (author)
- University of Helsinki
-
- Clusius, Petri (author)
- University of Helsinki
-
- Roldin, Pontus (author)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,LTH profilområde: Aerosoler,LTH profilområden,Centre for Environmental and Climate Science (CEC),Faculty of Science,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH
-
- Baykara, Metin (author)
- University of Helsinki,Istanbul Technical University
-
- Pichelstorfer, Lukas (author)
- University of Salzburg,University of Helsinki
-
- Foreback, Benjamin (author)
- University of Helsinki,Beijing University of Chemical Technology
-
- Bäck, Jaana (author)
- University of Helsinki
-
- Petäjä, Tuukka (author)
- University of Helsinki
-
- Makkonen, Risto (author)
- University of Helsinki,Finnish Meteorological Institute
-
- Kerminen, Veli Matti (author)
- University of Helsinki
-
- Pihlatie, Mari (author)
- University of Helsinki,Beijing University of Chemical Technology
-
- Aalto, Juho (author)
- University of Helsinki
-
- Kulmala, Markku (author)
- University of Helsinki,Beijing University of Chemical Technology,Nanjing University
-
show less...
-
(creator_code:org_t)
- 2022-09-15
- 2022
- English.
-
In: npj Climate and Atmospheric Science. - : Springer Science and Business Media LLC. - 2397-3722. ; 5:1
- Related links:
-
http://dx.doi.org/10... (free)
-
show more...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- A multitude of biogeochemical feedback mechanisms govern the climate sensitivity of Earth in response to radiation balance perturbations. One feedback mechanism, which remained missing from most current Earth System Models applied to predict future climate change in IPCC AR6, is the impact of higher temperatures on the emissions of biogenic volatile organic compounds (BVOCs), and their subsequent effects on the hydroxyl radical (OH) concentrations. OH, in turn, is the main sink term for many gaseous compounds including methane, which is the second most important human-influenced greenhouse gas in terms of climate forcing. In this study, we investigate the impact of this feedback mechanism by applying two models, a one-dimensional chemistry-transport model, and a global chemistry-transport model. The results indicate that in a 6 K temperature increase scenario, the BVOC-OH-CH4 feedback increases the lifetime of methane by 11.4% locally over the boreal region when the temperature rise only affects chemical reaction rates, and not both, chemistry and BVOC emissions. This would lead to a local increase in radiative forcing through methane (ΔRFCH4) of approximately 0.013 Wm−2 per year, which is 2.1% of the current ΔRFCH4. In the whole Northern hemisphere, we predict an increase in the concentration of methane by 0.024% per year comparing simulations with temperature increase only in the chemistry or temperature increase in chemistry and BVOC emissions. This equals approximately 7% of the annual growth rate of methane during the years 2008–2017 (6.6 ± 0.3 ppb yr−1) and leads to an ΔRFCH4 of 1.9 mWm−2 per year.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Boy, Michael
-
Zhou, Putian
-
Kurtén, Theo
-
Chen, Dean
-
Xavier, Carlton
-
Clusius, Petri
-
show more...
-
Roldin, Pontus
-
Baykara, Metin
-
Pichelstorfer, L ...
-
Foreback, Benjam ...
-
Bäck, Jaana
-
Petäjä, Tuukka
-
Makkonen, Risto
-
Kerminen, Veli M ...
-
Pihlatie, Mari
-
Aalto, Juho
-
Kulmala, Markku
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Climate Research
- Articles in the publication
-
npj Climate and ...
- By the university
-
Lund University