CARIBIC – Sampling from Passenger Aircraft

• Consortium– Start: 1994

– First measurements: 1997

– Lund• Joined 1995• First measurements: 1999• 2 PhD (Papaspiropoulos, Nguyen)

• 11 Research groups– Germany (6)

– France (1), Netherlands (1)

– Sweden (1), Switzerland (1)

– UK (1)

• + Lufthansa

Civil Aircraft for Regular Investigation of the atmosphere Based on an Instrument Container

VR project (3 y): Global scale experimental studies of the aerosol chemical composition in the upper troposphere and the lowermost stratosphere – focus on nano structures

Aircraft

LH A340-600 D-AIHE

Inlet

aerosol inlet

video camera

trace gas inlet

water inlet

Instrumentation

1.6 m1.5 t

CO

O3 NOy

CARIBIC Measurements

• Trace gases– In situ

• CO

• O3

• NOy

• H2O

• Acetone, Methanol

– Air samples• GHG• Halogenated compounds• Isotopes

– Special• O2

• DOAS (NO2, O3, BrO, HCHO)

• Aerosol– Size distribution

• 3 CPC (cutoff 4, 12, 18 nm)• OPC (100 nm – 5 µm)

– Samples (100 nm – 2µm)• Quantitative analyses

– PIXE (S and heavier)

– PESA (H(?), C, N, O)

• Single particle analyses– TEM

– EFTEM

• Meteorology (trajectories etc.)

Results – Particulate Sulfur

First PESA Results

Results – Single Particle Analysis

TEM and EFTEM on stratospheric particle

Plans

• Short term (this year)– Develop H analysis

– Undertake large number of H, C, N, O analyses

– Sulfur climatology

– Influence of deep convection on UT/LS aerosol

• Longer term– Methods to classify the

carbonaceous component

– Climatology H, C, N, O

– Production of carbonaceous aerosol in the stratosphere

– Revisit single particle analysis