aerosol and chemical transport in tropical convection active
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
Aerosol and chemical transport in tropical
convection
ACTIVE
Airborne measurements for ACTIVE
ARA Egrett, 10 - 15 km
NERC Dornier0-5 km
Ozonesondes (profiles)
Egrett payloadBasic Meteorology and position Pressure, temperature, wind (1 Hz), GPSDMT Single Particle Soot Photometer (SP-2) † Aerosol particle size distribution (0.2 – 1.0 µm),
light absorbing fraction (LAP), carbon mass, metal
2 x TSI-3010 Condensation Particle Counter (CPC)
Total condensation particles > 40 nm & > 80 nm
DMT Cloud, Aerosol & Precipitation Spectrometer (CAPS)
Cloud Droplet psd, aerosol/small particle assymetry, aerosol refractive index,large ice psd, (0.3<Dp<3,200 µm), Total Liquid Water Content
DMT Cloud Droplet Probe (CDP) Particle Size Distribution (2< Dp<60 µm)SPEC Cloud Particle Imager CPI-230 Cloud particle/ice CCD images, (30 < Dp<
2,300µm)Buck Research CR-2 frost point hygrometer Temperature, dew/ice point, 20 s, 0.1
2X Tunable diode laser Hygrometer (SpectraSensors)
Water vapour, 2 Hz, 0.005 ppmv precision
Julich CO analyser High precision (± 2 ppb), fast response (10 Hz) CO
Cambridge Miniature Gas-Chromatograph Halocarbons (Cl, Br, I), 3-6 min, 5%TE-49C UV Ozone sensor Ozone concentration (± 1 ppbv, 10 seconds)Adsorbent tube carbon trap C4-C9 aliphatics, acetone, monoterpenesNO and NO2 chemiluminescent detector † 200 ppt @ 10 Hz; 30 ppt @ 4 s integration
† alternates AerosolHumidity Cloud
Physics
Chemistry Met/Position
Dornier payloadBasic meteorology Aventech probe ARSF/ManchesterPosition/Timing GPS ARSFAerosol Mass Spectrometer Aerosol composition, 30 – 2000 nm ManchesterCondensation particle counter
Aerosol concentration > 10 nm Manchester
Grimm Optical Particle Counter
Aerosol size distribution, 0.5 – 20 μm
Manchester
Ultra high sensitivity aerosol spectrometer
Aerosol size distribution 50 nm – 2 µm
Manchester
Aerosol spectrometer probe Aerosol size distn, 0.1 – 1 µm ManchesterFSSP Aerosol, size ( 2- 47 µm) ManchesterFilters Coarse aerosol composition ManchesterOzone UV absorption, 2B YorkCO AL5003 YorkVOC Adsorbent tubes YorkNO/NOx (TWP-ICE period only) Chemiluminescence/catalysis YorkHalocarbons DIRAC gas chromatograph CambridgeBlack Carbon PSAP DLR
Aerosol Chemistry Met/Position
Egrett payloadBasic Meteorology and position Pressure, temperature, wind (1 Hz), GPSDMT Single Particle Soot Photometer (SP-2) † Aerosol particle size distribution (0.2 – 1.0 µm), light
absorbing fraction (LAP), carbon mass, metal 2 x TSI-3010 Condensation Particle Counter (CPC) Total condensation particles > 10 nm & > 80 nmDMT Cloud, Aerosol & Precipitation Spectrometer (CAPS)
Cloud particle size distribution, aerosol/small particle asymmetry, aerosol refractive index (0.3<Dp<2,000 µm)
DMT Cloud Droplet Probe (CDP) Particle Size Distribution (2< Dp<62 µm)SPEC Cloud Particle Imager CPI-230 Cloud particle/ice CCD images, (10 < Dp< 2,300 µm)Buck Research CR-2 frost point hygrometer Temperature, dew/ice point, 20 s, 0.1
2X Tunable diode laser Hygrometer (SpectraSensors) Water vapour, 2 Hz, 1 ppmvJulich CO analyser High precision (± 2 ppbv), fast response (1 Hz) COCambridge Miniature Gas-Chromatograph Halocarbons (Cl, Br, I), 3-6 min, 5%TE-49C UV Ozone sensor Ozone concentration (± 1 ppbv, 10 seconds)Adsorbent tube carbon trap C4-C9 aliphatics, acetone, monoterpenesNO and NO2 chemiluminescent detector † 200 ppt @ 10 Hz; 30 ppt @ 4 s integration
† alternates AerosolHumidity Cloud
Physics
Chemistry Met/Position
Dornier payloadAventech AIMMS-20 probe Basic Meteorology ARSF/ManchesterGPS Position/Timing ARSFAerosol Mass Spectrometer Aerosol composition, 30 – 2000 nm ManchesterCondensation particle counter
Aerosol concentration > 10 nm Manchester
Grimm Optical Particle Counter
Aerosol size distribution, 0.3 – 2 μm
Manchester
Ultra high sensitivity aerosol spectrometer
Aerosol size distribution 0.1 – 0.8 μm
Manchester
Aerosol spectrometer probe Aerosol size distribution, 0.2 – 2 µm
Manchester
FSSP Aerosol, size ( 2- 47 µm) ManchesterPSAP Black Carbon aerosol DLRFilters Coarse aerosol composition Manchester2B technologies model 202 Ozone YorkAerolaser AL5003 CO YorkAutomatic tube sampler C4-C9 aliphatics, acetone, OVOCs
etcYork
Chemiluminescence/catalysis NO/NOx YorkDIRAC gas chromatograph Halocarbons CambridgeAerosol Chemistry Met/
Position
Campaign 113 ED 14 15 ED 16ED
GF17 18 19 D
GF20 21 22 23 D
GF24 D 25 26
27 E 28 D F
29 GF
30EDGF(2)
1 ED 2 3 E
4 ED 5 ED GF
6 E 7 8 E 9 E 10 E
Test Survey Hector Mixed survey/Hector
Nov
DecSingle-cellular Hector
Multi-cellular Hector
Mini-monsoon
Campaign 2Jan 16 17 18 19 D 20ED 2122ED
T23 E T
24 25 ED PT
26 D 27 ED PT
28
29 30 D 31 E 1 ED 2 D 3 ED 45 6 ED
PT7 8 ED
T9 D T
10ED PT
11
12 EDPT
13 E 14 ED 15 E 16 17 Feb
Test Survey Lidar Monsoon Aged anvil Hector
Single-cellular Hector
Multi-cellular Hector
Active Monsoon Inactive Monsoon
Summary of flights
7
1
3
2
HectorSurveyTestCirrus
5
41
3
2HectorSurveyTestCirrusMonsoon
73
2
ConvectionSurveyTest
Campaign 1 Campaign 2
Egrett
Dornier7
7
1
ConvectionSurveyTest
O3sondes: 23 8
13 15
12 15
Single-cell storm, Nov 16
17:30
16:15
Flights, Nov 16
Dornier
GeophysicaEgrett
Falcon
Cloud particles: CAPSCloud imaging probe: large
particles
Cloud and aerosol spectrometer: small particles observed in first Egrett transect of
anvil
Data: A. Heymsfield and A. Bansamer
Multicell thunderstorm: 30 Nov
14:12
15:25
17:05
15:10
Joint flights, 30th November
Dornier
Geophysica
Dornier
EgrettFalcon
15:00
16:23
Monsoon convection: 22 Jan 2006MTSAT infra-red image
Aircraft tracks: Egrett (red) and Twin Otter
(green)
Rain rate from polarimetric radar
Courtesy: Peter May, BoM
Evolution of Egrett CO profiles during ACTIVE (ascent profiles only)
Data from A. Volz-Thomas and W. Pätz
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
The ConsortiumUniversity of Manchester: Geraint Vaughan (PI),
Tom Choularton, Hugh CoeMartin Gallagher, Keith
BowerUniversity of Cambridge: John Pyle, Neil Harris,
Peter Haynes, Rod JonesUniversity of York (UK): Ally Lewis
York University (Toronto): Jim WhitewayDLR (Germany): Reinhold BusenFZ Julich, Germany: Andreas Volz-ThomasNCAR, Boulder: Andy Heymsfield Australian Bureau of Meteorology: Peter MayAirborne Research Australia: Jörg Hacker
Summary
• 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
Campaign 1 Campaign 2
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.