HYMN Work Package 2:BIOSPHERE-ATMOSPHERE

INTERACTIONS

Colin Prentice (Leader) QUESTRita Wania (PhD candidate) HYMNRenato Spahni (Visiting Fellow) Swiss NSFLeilei Dong (Researcher) HYMN/NERCPru Foster (Coordinator) HYMN/QUEST

Goal: LPJ to model emissions and uptake of the major reactive trace gases => benchmark via CTMs and trace gas measurements (analogous to TMs and CO2 measurements)

Work Package 2

New lpjNew lpj

referencesreferences

Work PlanWork Plan

• Benchmark LPJ-WHyMe• Change soil layering to speed up computation• Add in SPITFIRE (with carbon isotopes)• Add in LPJ-DyN• Add in VOCs and hydrogen modules• “Structurally complete” version by Feb 2008• Benchmark new merged version (iteration with CTMs)

=> operational version by end 2008

CommentsComments• NitroEurope’s 3rd Annual meeting

(Feb 18-21, 2008 Het Pand, Gent)• Contact with Eurohydros (E. Nisbet)• Synergy with other LPJ developments in Bristol, especially fire/vegetation interactions

• Inventory approach for minor trace gases, ?agricultural sources (e.g. CH4

from rice)• Disregard plant source of CH4?• Stable isotope modelling??

13CH4 and CH3D15N2O and N2

18O DH