OP3 Project Measurement Table
Species |
OP3 partner |
Technique |
Ground |
Air |
VOC fluxes, including isoprene and oxygenates |
Lancaster/CEH |
Virtual eddy covariance/PTR-MS, REA/GC-MS/FID |
• |
|
Terpenoids, alcohols, aldehydes |
US EPA |
GC-PID, portable mass spectrometer |
• |
|
CO2/H2O/ O3 flux |
CEH/Manchester |
Eddy covariance |
• |
|
HNO3, HCl, HNO3, NH3 |
CEH |
GRAEGOR gradient system |
• |
|
Turbulence Energy Budget |
CEH/Manchester |
Eddy correlation |
• |
|
OH, HO2 |
Leeds |
FAGE (Fluorescence Assay by Gas Expansion) laser-induced fluorescence |
• |
• |
OH Lifetime |
Leeds |
FAGE |
• |
|
∑RO2 + HO2, HO2 |
Leic/UEA |
PERCA (PEroxy Radical Chemical Amplifier), dual inlet |
• |
• |
NO3, CH2O, NO2, SO2, HONO, IO, OIO, I2 and BrO |
Leeds |
Differential Optical Absorption Spectroscopy |
• |
|
Photolysis frequencies (incl. j(O1D),j(NO2)) |
Leic, Leeds |
Calibrated filter (2p and 4p sr) radiometers and spectral-radiometer |
• |
• |
O3 |
UEA, Leic, Leeds, FAAM |
UV absorption |
• |
• |
NO, NO2, ∑NOy |
York, UEA |
NO/O3 chemiluminescence detectors with appropriate convertors |
• |
• |
NO |
Leeds |
NO/O3 chemiluminescence |
• |
|
H2O2, ∑ ROOH |
UEA |
Dual-channel fluorometric detector |
• |
• |
H2O vapour |
Leic, Leeds, FAAM |
Dew point hygrometer |
• |
• |
CH2O |
UEA |
Fluorometric detection (Hantzsh reaction) |
• |
• |
Speciated aldehydes, ketones and alcohols |
UEA/Leic/Leeds/ Lancaster/York |
GC/GC-TOF-MS, PTR-MS, GC-MS, GC-FID |
• |
• |
CH4, speciated C2-C7 NMHC,(including isoprene |
York/UEA/ Lancaster/ Leic |
Automated GC/FID using programmed temperature injection /PTR-MS |
• |
• |
>C7 NMHC (eg. terpenes) any GC detectable species |
York |
Canisters (electropolished) 2-D GC and GC/MS |
• |
• |
CO |
York, FAAM |
Chemiluminesence |
• |
• |
PANs |
UEA, York |
GC/ECD |
• |
• |
Alkyl nitrates, organic N |
UEA |
GC and negative ion CI GC/MS |
• |
• |
Reactive halocarbons |
York/UEA |
GC/MS |
• |
• |
Aerosol number and size distributions |
Manchester |
DMPS [d] (3<Dmd<800nm), f range of optical & aerodynamic particle counters (0.5-20μm) |
• |
• |
Ultra-fine particle fluxes |
Manchester |
Eddy Correlation Dp> 3 nm, > 10 nm, independent CPC’s |
• |
|
Aerosol size segregated chemical composition |
Manchester |
Aerodyne Aerosol Mass Spectrometer (30nm<Dvad<2 μm), SO42-, NO3-, NH4+, volatile organic species |
• |
• |
Size resolved aerosol composition |
CEH/Manchester/York |
Filter/Impaction, subsequent analysis |
• |
|
Aerosol scattering properties |
FAAM |
3 wavelength nephelometer |
|
• |
Cloud Condensation Nuclei Activity |
Manchester/FAAM |
CCN spectrometer |
• |
• |