Global climate forcing driven by altered BVOC fluxes from 1990 to 2010 land cover change in maritime Southeast Asia
dc.contributor.author | Harper, KL | |
dc.contributor.author | Unger, N | |
dc.date.accessioned | 2019-01-25T16:20:11Z | |
dc.date.issued | 2018-11-30 | |
dc.description.abstract | Over the period of 1990-2010, maritime Southeast Asia experienced large-scale land cover changes, including expansion of high-isoprene-emitting oil palm plantations and contraction of low-isoprene-emitting natural forests. The ModelE2-Yale Interactive terrestrial Biosphere global chemistry-climate model is used to quantify the atmospheric composition changes, and for the first time, the associated radiative forcing induced by the land-cover-change-driven biogenic volatile organic compound (BVOC) emission changes (+6.5TgCy-1 isoprene, -0.5TgCy-1 monoterpenes). Regionally, surface-level ozone concentrations largely decreased (-3.8 to +0.8ppbv). The tropical land cover changes occurred in a region of strong convective transport, providing a mechanism for the BVOC perturbations to affect the composition of the upper troposphere. Enhanced concentrations of isoprene and its degradation products are simulated in the upper troposphere, and, on a global-mean basis, land cover change had a stronger impact on ozone in the upper troposphere (+0.5ppbv) than in the lower troposphere (<0.1ppbv increase). The positive climate forcing from ozone changes (+9.2mWm-2) was partially offset by a negative forcing (-0.8mWm-2) associated with an enhancement in secondary organic aerosol (SOA). The sign of the net forcing is sensitive to uncertainty in the SOA yield from BVOCs. The global-mean ozone forcing per unit of regional oil palm expansion is +1mWm-2Mha-1. In light of expected continued expansion of oil palm plantations, regional land cover changes may play an increasingly important role in driving future global ozone radiative forcing. | en_GB |
dc.identifier.citation | Vol. 18, pp. 16931 - 16952 | en_GB |
dc.identifier.doi | 10.5194/acp-18-16931-2018 | |
dc.identifier.uri | http://hdl.handle.net/10871/35596 | |
dc.language.iso | en | en_GB |
dc.publisher | European Geosciences Union (EGU) / Copernicus Publications | en_GB |
dc.rights | © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. | en_GB |
dc.title | Global climate forcing driven by altered BVOC fluxes from 1990 to 2010 land cover change in maritime Southeast Asia | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-01-25T16:20:11Z | |
dc.identifier.issn | 1680-7316 | |
dc.description | This is the final version. Available on open access from EGU via the DOI in this record | en_GB |
dc.description | Data availability. Numerical data used to make the figures or used to otherwise support the analysis are included as Supplement. Raw model output is available from the authors. All other data used as input to the model are listed in the references. | en_GB |
dc.identifier.journal | Atmospheric Chemistry and Physics | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2018-09-25 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2018-11-30 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-01-25T16:18:14Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2019-01-25T16:20:13Z | |
refterms.panel | B | en_GB |
refterms.depositException | publishedGoldOA |
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