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GEOS-CHEM Near-Real Time Full Chemistry Simulations: Insights from the ICARTT Campaign

This presentation by Solène Turquety at the GEOS-CHEM Meeting on April 4, 2005, discusses the implementation of near-real-time (NRT) full chemistry simulations for the ICARTT campaign during summer 2004. It aims to support flight planning by monitoring deviations in ozone and aerosol processes, generate preliminary findings, and validate satellite data. Key features include daily updates on biomass burning emissions, a semi-automated simulation process, and visualization tools. Future improvements and developments in GEOS-CHEM are also highlighted.

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GEOS-CHEM Near-Real Time Full Chemistry Simulations: Insights from the ICARTT Campaign

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  1. Solène Turquety – GEOS-CHEM Meeting April 4, 2005 GEOS-CHEM Near-Real Time Full-Chemistry SimulationsS. Turquety, D. J. Jacob, R. M. Yantosca, R. C. Hudman, L. Jaeglé, S. Wu • Objectives : • 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 • Support satellite validation: Used at JPL by Qinbin Li for first analysis of TES and MLS data • Comparison with in situ measurements: Used byDan Jaffe’s group in University Washington • More?....

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

  3. GEOS-CHEM NRT full-chemistry simulations 0.00 2.5 8.3 tons CO / ha burned 0.00 Solène Turquety – GEOS-CHEM Meeting April 4, 2005 • 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 ??? Including peat burning

  4. GEOS-CHEM NRT full-chemistry simulations Solène Turquety – GEOS-CHEM Meeting April 4, 2005 • 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

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

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

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

  8. GEOS-CHEM NRT full-chemistry simulations • 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/ • ...

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