HAIS Advanced Whole Air Sampler (AWAS) E. Atlas University of Miami R. LuebUniv. of Miami/NCAR R. HendershotNCAR S. SchaufflerNCAR D. BlakeUC-Irvine.

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Presentation transcript:

HAIS Advanced Whole Air Sampler (AWAS) E. Atlas University of Miami R. LuebUniv. of Miami/NCAR R. HendershotNCAR S. SchaufflerNCAR D. BlakeUC-Irvine

HAIS – AWAS Advanced Whole Air Sampler Pumps, Control Computer, Pneumatic Supply 12-can sample modules Computer tray (laptop) Exhaust manifold

HAIS – AWAS Advanced Whole Air Sampler Pumps, Control Computer, Pneumatic Supply 12-can sample modules Computer tray (laptop) Exhaust manifold

AWAS: Selected Trace Gas Measurements YrsSource ChlorofluorocarbonsOrganic Nitrates CFC-11 50AMethyl nitrate(CH3ONO2)0.08A/N CFC AEthyl nitrate(C2H5ONO2)0.04A/N CFC APropyl nitrates(C3H7ONO2)0.03A/N CFC AButyl nitrates (C4H9ONO2)0.02A CFC APentyl nitrates (C5H11ONO2)0.02A HalonsNon-Methane Hydrocarbons CFC-12b1 (Halon 1211)20AEthane (C2H6)0.2A CFC-13b1 (Halon 1301)65AEthyne (C2H4)0.06A/B CFC-114b2 (Halon 2402)20APropane(C3H8)0.04A Hydrochlorofluorocarbons/Isobutane(C4H10)0.02A Hydrofluorocarbonsn-Butane (C4H10)0.02A HCFC-22 (CHF2Cl)13AIsopentane (C5H12)0.01A HCFC-141b (CH3CFCl2)9.4An-Pentane (C5H12)0.01A HCFC-142b (CH3CF2Cl)19.5AIsoprene (C5H10)hrsN HFC-134a (C2H2F4)14ABenzene (C6H6)0.04A/B SolventsToluene (C7H8)0.01A/B Carbon Tetrachloride 40A C2-Benzenes (C8H10)<.01A Methyl Chloroform4.8A a-Pinene (C10H20)hrsN Tetrachloroethylene 0.3A Methylene Chloride 0.3AOther Chloroform 0.4AMethane (CH4)9A/N/B Trichloroethylene 0.02ACarbon Monoxide (CO)0.4A/N/B Methyl Halides Nitrous Oxide (N2O)115N Methyl Bromide 0.8A/N/BCarbonyl Sulfide (COS)30N/A/B Methyl Chloride 1.5N/BDimethyl Sulfide (C2H6S)<.01N Methyl Iodide 0.01N Methylene Bromide0.4N CHxBryClz0.1N Bromoform 0.1N A = anthropogenic/industrial N = natural/marine B = biomass burning

Grab Sample Sequence for Whole Air Samples (from WB-57)

Vertical redistribution of short-lived halocarbons to the upper troposphere: Profile of bromoform (CHBr 3 ) and ozone over Houston