1. GEOS-CHEM Near-Real Time Full-Chemistry Simulations S. Turquety, D. J. Jacob, R. M. Yantosca, R. C. Hudman, L. Jaeglé, S. Wu Objectives : 1.ICARTT campaign summer 2004: Support flight planning: monitor any large deviations between the aircraft observations and our understanding of ozone and aerosol processes that may cause alteration of flight plans, Generate a set of preliminary findings 2. Support satellite validation: Used at JPL by Qinbin Li for first analysis of TES and MLS data 3.Comparison with in situ measurements: Used by Dan Jaffe’s group in University Washington 4.More?.... Solène Turquety – GEOS-CHEM Meeting April 4, 2005

2. Daily full chemistry simulations v6-02-03 : 2x2.5 horizontal resolution, 30 levels, global based on GEOS-4 1 st look met fields daily-updated biomass burning emissions for North America based on MODIS hotspots daily plane flight diagnostic (1 st included for ICARTT) 2-D “column” timeseries for tropospheric CO, O3, NO2, HCHO for 1 st look, direct comparison with satellites Runs semi-automated using perl scripts developed by Bob Yantosca GEOS-CHEM NRT full-chemistry simulations INTEX-NA Flight tracks 1/07-15/08 MODIS hotspots: assume 100ha/hotspot Emissions/ unit area (Yevich and Logan) Emissions (Molec/cm2/s) 60 % 40 % 3km 6km PBL Vertical distribution Fok-Yan Leung x Solène Turquety – GEOS-CHEM Meeting April 4, 2005

3. Future improvements: New version of GEOS-CHEM (v7) Cf. presentation R. M. Yantosca NEI 1999 for North American anthropogenic emissions (now in standard version of the code) Cf. presentation R. Hudman Improve parameterization of lightning (adapt it to GEOS-4) Cf. presentation R. Hudman Improve biomass burning emissions (emissions / unit area) Other ??? GEOS-CHEM NRT full-chemistry simulations Solène Turquety – GEOS-CHEM Meeting April 4, 2005 0.002.5 0.00 8.3 tons CO / ha burned Including peat burning

4. NRT == available with delay of ~ 2-3 days Output data archived for 1 month at Harvard (ICARTT period July-August 2004, and September 2004 still available): /as2/priv/ICARTT/ Daily means all GEOS-CHEM tracers, met. data, sources… 3h timeseries 3D: CO, O3, NOx, PAN, PMN, HNO3, ACET, sulfate, AOD 3h timeseries 2D: tropospheric columns CO, O3, HCHO, NO2 Along flighttrack for ICARTT when specified: all GEOS–CHEM chemical tracers absolute humidity Temperature wind speed NO, OH, HO2 JNO2, JO1D Aerosol optical depths O3 P/L rates Restart files GEOS-CHEM NRT full-chemistry simulations Solène Turquety – GEOS-CHEM Meeting April 4, 2005

5. GEOS-CHEM NRT full-chemistry simulations Interactive online visualization site by Lyatt Jaeglé, U. Washington http://coco.atmos.washington.edu/cgi-bin/ion-p?page=geos_intexa.ion Solène Turquety – GEOS-CHEM Meeting April 4, 2005

6. GEOS-CHEM NRT full-chemistry simulations – ICARTT Biomass burning plume sampled by the DC-8 on flight # 9 (July 18 th ) GEOS-CHEM NRTObs. G. W. Sachse MOPITT July 17-19, 2004GEOS-CHEM NRT x MOPITT AK Solène Turquety – GEOS-CHEM Meeting April 4, 2005

7. GEOS-CHEM NRT full-chemistry simulations – TES 20 Sept. 2004 Solène Turquety – GEOS-CHEM Meeting April 4, 2005 Qinbin Li, JPL, AGU 2004

8. More on the NRT : presentations using the NRT simulations: Meteorological indices for transpacific transport of Asian pollution, Qing Liang, U. Washington Export of North American ozone and NOy constrained from ICARTT observations, Rynda Hudman, Harvard Variability of HCHO during ICARTT : implications for GOME/OMI interpretation, Dylan Millet, Harvard Output data archived for 1 month at Harvard (ICARTT period July-August 2004, and September 2004 still available): /as2/priv/ICARTT/... GEOS-CHEM NRT full-chemistry simulations