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Aerosol and chemical transport in tropical convection ACTIVE

Aerosol and chemical transport in tropical convection ACTIVE. Airborne measurements for ACTIVE. Ozonesondes (profiles). ARA Egrett, 10 - 15 km. NERC Dornier 0-5 km. Egrett payload. † alternates. Chemistry. Met/Position. Aerosol. Humidity. Cloud Physics. Dornier payload. Chemistry.

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Aerosol and chemical transport in tropical convection ACTIVE

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  1. Aerosol and chemical transport in tropical convectionACTIVE

  2. Airborne measurements for ACTIVE Ozonesondes (profiles) ARA Egrett, 10 - 15 km NERC Dornier 0-5 km

  3. Egrett payload † alternates Chemistry Met/Position Aerosol Humidity Cloud Physics

  4. Dornier payload Chemistry Met/Position Aerosol

  5. Egrett payload † alternates Chemistry Met/Position Aerosol Humidity Cloud Physics

  6. Dornier payload Chemistry Met/Position Aerosol

  7. Campaign 1 Nov Dec Test SurveyHector Mixed survey/Hector Single-cellular Hector Multi-cellular Hector Mini-monsoon

  8. Campaign 2 Test Survey Lidar Monsoon Aged anvil Hector Active Monsoon Inactive Monsoon Multi-cellular Hector Single-cellular Hector

  9. Summary of flights Campaign 1 Campaign 2 15 13 Egrett Dornier 15 12 O3sondes: 23 8

  10. Single-cell storm, Nov 16 16:15 17:30

  11. Flights, Nov 16 Geophysica Egrett Falcon Dornier

  12. Cloud particles: CAPS Cloud imaging probe: large particles Data: A. Heymsfield and A. Bansamer Cloud and aerosol spectrometer: small particles observed in first Egrett transect of anvil

  13. Multicell thunderstorm: 30 Nov 14:12 15:10 15:25 17:05

  14. Joint flights, 30th November Falcon Egrett Geophysica Dornier 16:23 15:00 Dornier

  15. Monsoon convection: 22 Jan 2006 MTSAT infra-red image Rain rate from polarimetric radar Aircraft tracks: Egrett (red) and Twin Otter (green) Courtesy: Peter May, BoM

  16. Evolution of Egrett CO profiles during ACTIVE (ascent profiles only) Data from A. Volz-Thomas and W. Pätz

  17. Summary • Around 30 flights with each aircraft in and around tropical convection • Inflow conditions change from polluted early in November (smoke from biomass burning) to very clean in Jan/Feb • Hectors observed in polluted and clean regine • Monsoon convection observed in the second half of January

  18. The Consortium University of Manchester: Geraint Vaughan (PI), Tom Choularton, Hugh Coe Martin Gallagher, Keith Bower University of Cambridge: John Pyle, Neil Harris, Peter Haynes, Rod Jones University of York (UK): Ally Lewis York University (Toronto): Jim Whiteway DLR (Germany): Reinhold Busen FZ Julich, Germany: Andreas Volz-Thomas NCAR, Boulder: Andy Heymsfield Australian Bureau of Meteorology: Peter May Airborne Research Australia: Jörg Hacker

  19. 7 Egrett Hector flights (3 NOX, 4 aerosol) 2 Egrett cirrus flights (1 NOx, 1 aerosol) 1 Egrett survey (aerosol) 3 Egrett test flights 7 Dornier convection flights 3 Dornier survey flights Intercomparison leg 2 Dornier test flights 23 ozonesondes 2 Monsoon anvil flights (1 NOx, 1 aerosol) 5 Egrett Hector flights (2 NOX, 3 aerosol) 3 Egrett cirrus flights (1 NOx, 2 aerosol) 4 Egrett survey (1 aerosol, 2 lidar, 1 transit) 1 Egrett calibration flight 7 Dornier convection flights 7 Dornier survey flights Intercomparison flight 1 Dornier test flights 8 ozonesondes Summary Campaign 1 Campaign 2

  20. Objectives • Relate measurements of aerosols and chemicals in the TTL to low-level sources. • Determine how deep convection modifies the aerosol population reaching the TTL, and thus evaluate its impact on cirrus nucleation. • Determine the relative contribution of convection and large-scale transport to the composition of the TTL over Darwin. • Compare the effects of monsoon and pre-monsoon convection on the composition of the TTL. • Determine the contribution of deep convection to the NOx and O3 budget in the TTL • Measure how much black carbon reaches the outflow regions of the storms.

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