NEAQS - ITCT 2004

NOAA Research Vessel Ronald H. Brown Instrumentation

The instrumentation proposed for deployment on the Ronald H. Brown will provide characterization of the atmospheric dynamics, gas-phase chemistry, aerosol chemical, physical, and optical properties, and radiation fields in this complex environment. Central to the 2004 NEAQS/ITCT will be techniques that yield information on the interactions between gas-phase and aerosol chemistry and how the evolving aerosol properties affect the radiation fields. A critical requirement is understanding how these chemical effects are influenced by transport to, from and within the MBL. Thus particular emphasis has been placed on the need to understand the dynamical structure of the MBL at large scales via remote sensing instruments. Smaller scales will also be studied with the addition of instrumentation to investigate the turbulence structure from the surface layer to the top of the MBL. Coincident with this activity will be measurements of chemical fluxes of CO₂, and possibly O₃.

Proposed instrumentation for deployment on Ronald H. Brown
Parameter	Method
Photolysis rates (j-values)	Spectral radiometer
Ozone (O3)	UV absorbance
Ozone	NO chemiluminescence
Carbon monoxide (CO)	Nondispersive IR
Carbon dioxide (CO2)	Nondispersive IR
Sulfur dioxide (SO2)	Pulsed UV fluorescence
Nitric oxide (NO)	Chemiluminescence
Nitrogen dioxide (NO2)	Photolysis/chemiluminescence
Total reactive nitrogen oxides (NOy)	Au tube/chemiluminescence
Peroxyacyl nitric anhydrides (PANs)	GC/ECD
Alkyl nitrates (RONO2)	GC/MS
Nitrate radical (NO3); Dinitrogen pentoxide (N2O5)	Cavity ring-down spectrometry
Nitric acid (HNO3)	Mist chamber/IC
Water vapor (H2O)	Nondispersive IR
Continuous Speciation of VOCs	PTR-MS/CIMS
VOC Speciation	GC/MS
Formaldehyde (HCHO)	CHD fluorimetry
Radon (Rn)	Radon gas decay
Seawater/atmospheric CO2	Nondispersive IR
Enhanced measurement of radiative fluxes	Spectral radiometers
Aerosol optical depth	Continuous sunphotometer
Aerosol optical depth	MicroTOPS
Irradiance	Portable Radiation Package (PRP)
Size-resolved aerosol composition and gravimetric mass	Impactors (IC, XRF, and thermal-optical OC/EC)
OC/EC	On-line thermal optical
Ionic Aerosol Composition	Particle In Liquid Sampler (PILS)
Aerosol Size and Composition	Aerosol Mass Spectrometer
Aerosol scattering (400, 550, 700 nm)	TSI Model 3563 Nephelometer
Aerosol absorption (550 nm)	Radiance Research PSAP
Aerosol number	CNC
Aerosol size distribution	Twin DMAs and an APS
Aerosol light scattering hygroscopic growth f(RH)	Twin TSI 3563 nephelometers
Aerosol size hygroscopic growth g(RH)	Tandem DMAs
Total and sub-micron aerosol extinction	Extinction cell
Total and sub-micron aerosol extinction	Cavity ring-down spectrometer
Ozone/aerosol vertical profiles	O3/Aerosol Lidar (OPAL)
Wind/temperature vertical profiles	915 MHz wind Radar
High-resolution BL winds/aerosol	Doppler Lidar (HRDL)
Wind profiles/microscale turbulence	C-band radar
Temperature/relative humidity profiles	Radiosondes
Surface energy balance (fluxes)	Eddy covariance (bow mounted)
High resolution BL turbulence structure	Doppler mini-Sodar
Cloud drop effective radius	K-band radar
Cloud liquid water path (aerosol indirect effect)	Microwave radiometer
Liquid water path	Mini Differential Absorption Spectrometer (MIDAS)

ICARTT 2004 Mobile Platform sites

NOAA's Atmospheric Research Campaign
Combining Climate Change and Air Quality Research

NOAA Research Earth System Research Laboratory Chemical Sciences Division
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