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GMI Status – Outside Users

GMI Status – Outside Users. Dylan Jones and students, U Toronto – interpretation of O3 and NO2 measurements Kaley Walker and students, U Toronto - comparison with ACE measurements Shuhui Wang, MLS team (JPL) Darryn Waugh, JHU – interest in tropospheric simulations

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GMI Status – Outside Users

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  1. GMI Status – Outside Users Dylan Jones and students, U Toronto – interpretation of O3 and NO2 measurements Kaley Walker and students, U Toronto - comparison with ACE measurements Shuhui Wang, MLS team (JPL) Darryn Waugh, JHU – interest in tropospheric simulations Louisa Emmons, NCAR - POLARCAT model intercomparison project Xiong Liu, Harvard – OMI O3 retrievals Krotkov, Celarier, Swartz et al, GSFC – OMI NO2 retrievals Jacqui Witte, GSFC – comparisons with SHADOZ O3 Yaping Xiao, AER - interest in CH4 simulations.

  2. GMI Publications in the Past Year T. Yuan et al. (Huisheng), “Aerosol indirect effect on tropospheric ozone via cloud lightning”, submitted to PNAS. Liu, H., D.B. Considine, L.W. Horowitz, J.H. Crawford, S.E. Strahan, M.R. Damon, S. Steenrod, J.M. Rodriguez, X. Xu, J. Kouatchou, C. Carouge, and R.M. Yantosca, Using beryllium-7 to assess cross-tropopause transport in global models, in revision, J. Geophys. Res., 2011. Allen, D. J., K. E. Pickering, J. Rodriguez, B. N. Duncan, S. E. Strahan, and M. Damon (2010), Impact of lightning NO emissions on North American photochemistry as determined using the Global Modeling Initiative (GMI) model, J. Geophys. Res., 115, D22301, doi:10.1029/2010JD014062. Barahona, D., Sotiropoulou, R.E.P., and Nenes, A. (2011) Global Distribution of Cloud Droplet Number Concentration, Autoconversion Rate and Aerosol Indirect Effect under DiabaticDroplet Activation, J.Geophys. Res., 116, D09203, doi:10.1029/2010JD015274Morales, R., Nenes, A., Jonsson, H., Flagan, R.C. and J.H. Seinfeld, Evaluation of a diabaticdroplet activation parameterization using in-situ cloud data, J.Geophys.Res., 116, in press.Karydis, V.A., Kumar, P., Barahona, D. and Nenes, A., On the effect of insoluble dust particles on global CCN and droplet number, J. Geoph. Res., in review.Allen, D.R., Douglass, A.R., Manney, G.L. , Strahan, S.E., Krosschel, J.C., Trueblood, J.V., Nielsen, J.E., Pawson, S., and Zhu, Z., ‘Modeling the Frozen-In anticyclone in the 2005 Arctic summer stratosphere’, Atmos. Chem. Phys., 11, 4557-4576.

  3. GMI Status – Available Met Fields EC Oslo (ECMWF Integrated Forecast System) – 2005 and 2006. 2x2x 37 levels, mostly below 44 mb. Provided by M. Prather, processed by Steve. GFDL AM3 (2x2.5 and 4x5, 48 levels (to 0.01 hPa) 2005). Processed and provided by Hongyu Liu. GEOS4DAS (2004- 2008) – Used in the Aura4 runs. GEOS5GCM – 2x2.5x72 levels, various years GEOS5/MERRA – processed by Megan. Years available: Dec 1989-May 2011 MERRA (2x2.5 and 1x1.25) Dec 2004-2008 GEOS-5.1 (4, 2, and 1o resolution)

  4. GMI Status – Simulations Aura4 – synoz bug fixed, Streets’ emissions updates to match MERRA. Jan 2004-Dec 2007 uses GEOS4-DAS met fields. Currently being rerun (almost done). 2x2.5x42 levels (0.01 hPa lid). MERRA – synoz bug fixed, wet dep fixed. Jan 2004-May 2011 (2x2.5x72 levels) MERRA ‘no_het’ – Sep 2010-May 2011 with het chemrxns turned off (same res as MERRA) Ozone-Depletion Potentials – Set of experiments to calculate lifetimes and ODPs for CFC11, CFC12, CFC-113, HCFC-22, N2O, CH4, CCl4, and CH3CCl3. Used GEOS5GCM met fields. 2x2.5x72 levels ARRA Aircraft Simulations – Used GEOS5GCM met fields for present day and 2050. 2x2.5x72 levels. El Nino and La Nina years. JNOP6 – Using MERRA met fields, ran 2004-2007 with J-NO scaled to 0.6 x FASTJx output. Test run to see if this helps the low NOy problem in GMI and Combo-CCM (it does!). Coupled Aerosols – This new mechanism has been run with GEOS4DAS fields (Huisheng) and with MERRA for 2004-6 (Steve). This run was used to initialize the POLMIP run. POLMIP – for POLARCAT MIP (Bryan Duncan/Louisa Emmons). MERRA met fields, coupled aerosol versions. 2007-8. Understanding transport of pollutants to the Arctic. New Tracer Suite: This is a new tracer_opt. It has Age of Air, CH3I, e90, TM25, synoz, Rn, Pb, 7Be, 10Be, and ff CO2. To be used for intercomparison of met fields. So far it has run with MERRA and EC Oslo, 25 years each.

  5. GMI Quality Control Megan has written IDL scripts to create a comprehensive set of plots that compare a new simulation with a previous one. All species in the amonthly file are compared (124 species): surface, 500, and 200 hPa, and ZM latitude-height for the troposphere and stratosphere. All column quantities, gas phase (O3, NO2, CH2O) and aerosols Cloud optical depth (from overpass file) Lightning NO, flash rates Emissions Wet dep species and dry dep species Original scripts produced 12,000 pages of plots! Quantities compared are monthly averaged. Plots are for Jan, Apr, Jul, and Oct. We are eliminating some species comparisons (esp. from amonthly).

  6. Sample plots: Surface O3, ZM Lat-Ht (Strat and Trop) Ratio Sim1/Sim 2 Sim 2 Sim 1 Surface O3 ZM Strat O3 ZM Trop O3

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