THE NASA/GTE/TRACE-P AIRCRAFT MISSION 26 February – 10 April 2001 MISSION OBJECTIVES to determine the chemical composition of the Asian outflow over the.

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Presentation transcript:

THE NASA/GTE/TRACE-P AIRCRAFT MISSION 26 February – 10 April 2001 MISSION OBJECTIVES to determine the chemical composition of the Asian outflow over the western Pacific in spring in order to understand and quantify the export of chemically and radiatively important gases and aerosols, and their precursors, from the Asian continent. to determine the chemical evolution of the Asian outflow over the western Pacific in spring and to understand the ensemble of processes that control this evolution.

TRACE-P AIRCRAFT PAYLOADS DC-8P-3 Ceiling11 km7 km CO, CO 2, CH 4, NMHCsxx Remote O 3, aerosol (lidar)x O 3, H 2 O, HO x, NO x xx H 2 O 2, CH 3 OOHx Carbonyls, alcohols, nitrilesx PANs, HNO 3 /NO 3 -, alkylnitratesxx SO 2, H 2 SO 4 (g)x Aerosol size distr., optical properties, chemical comp., BC, vol/nonvol CN, UF xx Halocarbons, OCSxx Actinic fluxesxx

TRACE-P FLIGHT TRACKS Operational sites: Hong Kong, Yokota AFB (Japan) Transit sites: Kona (Hawaii), Guam, Okinawa, Midway outbound inbound

TRACE-P COORDINATION WITH ACE-ASIA Two joint Asian outflow chemical characterization flights between the TRACE-P P-3 and the ACE-Asia C-130 out of Japan including a Terra underpass on each flight. One DIAL overpass of the ACE-Asia Twin Otter by the TRACE-P DC-8 during a column radiation closure experiment over the Sea of Japan

TRACE-P INVOLVED THE INTEGRATION OF AIRCRAFT, SATELLITES, MODELS, AND a priori EMISSION INVENTORIES CO fossil and biofuel bottom-up emission inventory (D.R. Streets, ANL) Daily CO biomass burning emissions from AVHRR (C.L. Heald) Chemical forecasts CTMs MOPITT CO observations CO aircraft observations (G.W. Sachse)

MOPITT VALIDATION PROFILES DURING TRACE-P aircraft Aircraft w/ MOPITT av kernels MOPITT averaging kernels G.W. Sachse, J.C. Gille, L. Emmons, C.L. Heald

MEAN MOPITT CO COLUMN DATA DURING TRACE-P (Mar-Apr 2001) MOPITT GEOS- CHEM model Difference Colette Heald, Harvard

TRANSPACIFIC TRANSPORT OF ASIAN CO AND OZONE IN TRACE-P: Feb 26-27, 2001 PLUME MOPITT 500 hPa CO, Feb 26 TRACE-P profiles, Feb CO Ozone M.A. Avery, S.A. Vay, G.W. Sachse, J.C. Gille, L. Emmons OzoneCO

TRANSPACIFIC TRANSPORT OF ASIAN POLLUTION PLUME AS SEEN BY MOPITT C.L.Heald, Harvard Feb 23 Feb 24 Feb 25 Feb 26 Feb 27 MOPITT GEOS-CHEMxAvgKer GEOS-CHEM DC-8 flt 4 DC-8 flt 5