Pacific Northwest Pollution Prevention Resource Center. VOCs & Climate Change. Michelle Gaither Ken Grimm Brian Penttila 20 April 2009. UN Framework Convention on Climate Change. Annex I parties must submit:
20 April 2009
Some VOCs are effective absorbers, but have very short lifetimes, so they are not important for direct forcing
From Highwood et al., 1999, Estimation of Direct Radiative Forcing due to Non-Methane Hydrocarbons.
The effectiveness of a chemicals IR absorption for warming also depends on the location of the absorption bands. Much of the spectrum is now saturated by the existing CO2 and water in the atmosphere; c.f. “atmospheric window”
From Mike Pilling, University of Leeds
Atkinson 2000 – Atmospheric Chemistry of VOCs & NOx
Highwood, “Estimation of direct radiative forcing due to non-methane hydrocarbons,” Atmospheric Environment, 1999
From IPCC AR4
Impact of non-methane VOCs is indirect, via effect on CO2, O3 and CH4
From: Gillenwater, “Forgotten carbon: indirect CO2 in greenhouse gas emission inventories,” Environmental Science & Policy, 2008.
All have diurnal and seasonal variation
From: Burrows, ACCENT Conference, 2007.