Paul Palmer, D. Jones, C. Heald, D. Jacob

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Presentation transcript:

Paul Palmer, D. Jones, C. Heald, D. Jacob 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 2x2.5o) CO emissions CO observations Forward model (GEOS-CHEM 2x2.5o) Global inventories tested Global totals Tg/yr Logan (1998) Logan (1998) + Streets (ff/bf) FF 394 318 BF 159 168 BB 437 “Tagged” CO model (30 tracers) OH from full chemistry run CO sources include BB, BF, and FF, oxidation of VOCs

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

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)

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

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