To quantify impact of WA emissions on global tropospheric composition, oxidising capacity,...
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Transcript of To quantify impact of WA emissions on global tropospheric composition, oxidising capacity,...
• To quantify impact of WA emissions on global tropospheric composition, oxidising capacity, stratospheric composition and climate on seasonal & inter-annual timescales
• To quantify role of deep convection on the chemical composition of the FT, UTLS
• etc…..
Strategy:• Global modelling - LMDz-INCA (SA), MIMOSA (SA), MOCAGE (CNRM), LOA, LA (TM4, RegCM), TM5 (KNMI), TOMCAT (UCAM)
• Regional modelling - BOLAM, Meso-NH, CHIMERE….
• Data analysis - satellite (MOPITT, IASI, CALIPSO, MODIS), MOZAIC, ozonesondes, aircraft & balloon data (Lagrangian modelling)
AMMA Chemical Modelling Activities (some of them…) CNRS-IPSL, CNRS-LA, KNMI, CNRM, UCAM, CNR, LISA
- Aircraft (and other) data analysis using mesoscale & global models(convection, long-range transport, lightning, surface emissions - BB, soils, vegetation, ….)
- Models used to calculate budgets/fluxes - major limitation is treatment of deep convection - need to evaluate param. Schemes(led by dynamicists - AMMA MIP: http://amma-mip.lmd.jussieu.fr)
AMMA Chemical Modelling On-going & Future Work
O3 from LMDzINCAO3 from all aircraft N-S flights
Courtesy: Bouarar, Schlager, FAAM, Yushkov, Safire, Nedelec
CO concentrations from LMDz-INCA (contours) and an idealized tracer over West Africa (Pham, Filiberti, Hourdin, IPSL, Paris)
sahara
sahel
guinee
southSouthAtlantic
Proposed AMMA Tracer ExperimentsFrederic Hourdin (CNRS/LMD), Peter van Velthoven(KNMI)
• Regional tracers emitted at surface and FT (1000 to 400 hPa)
plus some global (SCOUT-like) tracers with -decay/ wet. dep./strat. tracer
• Define some common AMMA-SCOUT tracer experiments?
IGBP-IGAC/WCRP-SPARCAtmospheric Chemistry and
Climate Project
Aims to improve understanding of climate forcing from chemical/aerosol agents &
their representation in models(feed into next IPCC/WMO)
Timeline (phase 1)
March 2006Pune, IndiaIGBP/ WCRP
SC/SSG
January 20071st Workshop
Geneva
definition of activities
summer 2007 Write-
up publication EOS, ACPD,
BAMS, ?
Dec 2007-Jan 2008
Workshop Real work begins,
experiments defined, Runs,
verification strategies
June 2008Workshop interpreting
results, writing papers
2006 2007 2008 2009
Papers submitted
Most model groups will
have “frozen” model
configs. for IPCC/WMO
August 2006 Planning WorkshopBoulder
selected issues & topics
“TroposChem” (IGAC)
(tropospheric gas-phase chem)
CCM-Val (SPARC)
(stratospheric chemistry)
AeroCom(tropospheric
aerosols)
Research Implementation Bodies
1. Emissions Harmonization2. Data Center3. AC&C Web page & “E-
newsletter”
WCRP-SPARC/IGBP-IGAC: AC&C
1. Composition impacts on climate2. Climate impacts on chemistry3. Climate impacts on surface-level
ozone & aerosols (“air quality”)
Unifying thematic areas
Cross-cuttingActivities
TF HTAP
GEIA
Observational Data
AC&C Research Activities
• Activity 1: A 20-25 year hind-cast of tropospheric ozone and aerosols - evaluation against observations
• Activity 2: Evaluation of processes controlling the distribution of aerosols/gases. Step 1: Focus on 5km to tropopause (LS)
• Activity 3: Better representation of cloud, aerosol, and chemical interactions.
• Activity 4: Analyses of sensitivities and uncertainties in the future scenarios for climate models.
The Phase 1 task: Modeling Study Activities