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Deriving Asian emissions of CO by inverting aircraft observations of CO during TRACE-P

Deriving Asian emissions of CO by inverting aircraft observations of CO during TRACE-P. Paul Palmer, D. Jones, C. Heald, D. Jacob Harvard University. B. Duncan (EPFL) , G. Sachse (NASA Langley) , D. Streets (Argonne Nat. Lab.) , R. Hoffman (AER Inc). Forward model (GEOS-CHEM 2x2.5 o ).

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Deriving Asian emissions of CO by inverting aircraft observations of CO during TRACE-P

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  1. Deriving Asian emissions of CO by inverting aircraft observations of CO during TRACE-P Paul Palmer, D. Jones, C. Heald, D. Jacob Harvard University B. Duncan (EPFL),G. Sachse (NASA Langley),D. Streets (Argonne Nat. Lab.),R. Hoffman (AER Inc)

  2. Forward model (GEOS-CHEM 2x2.5o) CO emissions CO observations Global inventories tested • “Tagged” CO model (30 tracers) • OH from full chemistry run • CO sources include BB, BF, and FF, oxidation of VOCs

  3. Logan emissions TRACE-P GEOS-CHEM Streets (Asia) + Logan emissions Forward model analysis suggests inventories are too low

  4. Inverse modeling overview Forward model (GEOS-CHEM) P3B, DC8 observations y Emissions x Inverse model Linear inverse model Xs = Xb + SbK (KTSbK + SY)-1(Y – KXb)

  5. Source regions resolved in inverse analysis S and N Korea Depending on region: bb, bf, ff

  6. Assume we have good knowledge of background CO during TRACE-P: solve for Asian sources only 1583 1590 not well constrained * IN PROGRESS *

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