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The effect of climate: CCE all – E all Increase temp → less PAN → increase O 3 PAN → NO x Surface ΔPAN / ppbv [JAN] Surface ΔO 3 / ppbv [JAN] Increase temp → more H 2 O decrease O 3 O3O3 O( 3 P) O 2 + M M O( 1 D) H2OH2O OH hνhν NOT THE WHOLE STORY!
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Vegetation
Global chemical transport model study of effects of temperature on
isoprene chemistry and emissionsAkinori Ito
My previous talk will be available at the ACPD web site.
iLEAPS Conference, Boulder, January 2006
Isoprene chemistry in a future atmospherePaul Young, Guang Zeng & John Pyle
Centre for Atmospheric Science, Cambridge University, UK
The effect of climate: CCEall – Eall
Increase temp → less PAN → increase O3
PAN → NOx
Surface ΔPAN / ppbv [JAN]
Surface ΔO3 / ppbv [JAN]
Increase temp → more H2O decrease O3
O3
O(3P)
O2 + M
M
O(1D)H2O OH
hν
NOT THE WHOLE STORY!
O3 increase/decrease? Regional…
Paul Young et al. Isoprene chemistry in a future atmosphere
NOx-limited regions
VOC-limited regions
Surface ΔO3 / ppbv: Eall – Eothers [JJA]
Increasing isoprene in a HIGH (2090) NOx/VOC background
O3 increase/decrease? Regional…
Paul Young et al. Isoprene chemistry in a future atmosphere
NOx-limited regions
VOC-limited regions
Surface ΔO3 / ppbv: Eiso – EBASE [JJA]
Increasing isoprene in a LOW (2000) NOx/VOC background
Isoprene swamps the more NOx-limited atmosphere
