American Geophysical Union Become an AGU Member
Subscribe to AGU Journals		 AGU Home AGU Publications

Read Full Article (file size: 82436 bytes)    Cited by

GEOPHYSICAL RESEARCH LETTERS, VOL. 30, NO. 18, 1936, doi:10.1029/2003GL017642, 2003

Effect of Climate Change on Isoprene Emissions and Surface Ozone Levels

M. G. Sanderson

Met Office, Bracknell, Berkshire, U.K.


C. D. Jones

Met Office, Bracknell, Berkshire, U.K.


W. J. Collins

Met Office, Bracknell, Berkshire, U.K.


C. E. Johnson

Met Office, Bracknell, Berkshire, U.K.


R. G. Derwent

Met Office, Bracknell, Berkshire, U.K.


Abstract

The effect of climate change on vegetation, isoprene emissions and surface ozone levels was investigated using a global three-dimensional general circulation model coupled to a dynamic vegetation and chemistry models. Integrations for the 1990s and 2090s were performed. Isoprene emissions increased from 549 Tg yr−1 (1990s) to 736 Tg yr−1 (2090s) as a result of climate change with fixed vegetation. However, the isoprene emissions only increase to 697 Tg yr−1 in the 2090s when vegetation changes were included. Surface ozone levels rose by 20–30 ppbv in some locations with fixed vegetation owing to increases in precursor gases, but only by 10–20 ppbv if the vegetation changes were included. Ozone levels in parts of China, Korea and the eastern USA are predicted to exceed the World Health Organisation health limit of 60 ppbv, however, when changes in vegetation are accounted for, a much smaller area exceeds this limit.

Received 29 April 2003; accepted 14 August 2003; published 20 September 2003.

Index Terms: 0315 Atmospheric Composition and Structure: Biosphere/atmosphere interactions; 0365 Atmospheric Composition and Structure: Troposphere—composition and chemistry; 0325 Atmospheric Composition and Structure: Evolution of the atmosphere; 1610 Global Change: Atmosphere (0315, 0325).

Read Full Article (file size: 82436 bytes)    Cited by

Citation: Sanderson, M. G., C. D. Jones, W. J. Collins, C. E. Johnson, and R. G. Derwent (2003), Effect of Climate Change on Isoprene Emissions and Surface Ozone Levels, Geophys. Res. Lett., 30(18), 1936, doi:10.1029/2003GL017642.