Project Instance

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{
    "ob_id": 14344,
    "uuid": "e1f2bd49c57644919c38c9c872024c1a",
    "title": "Tropospheric ORganic CHemistry experiment TORCH1 field campaign, Writtle College, Essex",
    "abstract": "The Polluted Troposphere Programme was a 5-year NERC thematic research programme which was centred upon the study of polluted boundary layer air and its transport to the free troposphere. The programme focussed on the regional scale, defined as intermediate between urban and hemispheric.\r\n\r\nTropospheric ORganic CHemistry Experiment (TORCH) was a NERC Polluted Troposphere Research Programme project (Round 1 - NER/T/S/2002/00145. Duration 2002 - 2005) led by A. Lewis, University of York.\r\n\r\nOrganic compounds are found throughout the atmosphere and contribute to the generation of both fine aerosol and photochemical oxidants such as ozone. The project contains comprehensive and integrated programme of modelling and measurements to address three inter-linked areas of current uncertainty:\r\n\r\n-To increase understanding of the role played by primary and partially oxidised organics in gas phase photochemistry.\r\n-To develop thermodynamic and microphysical descriptions of organic aerosol and use them in improved models of behaviour in the atmosphere.\r\n-To investigate the production, composition and evolution of organic aerosol and its links with gas phase organic oxidation.\r\n\r\nThe goals were to provide both a detailed data set on organic composition in the polluted atmosphere, and to develop theoretical and modelling tools which may be used in defining future air quality policy. \r\nThe Tropospheric Organic Chemistry experiment would formed a multi-institution consortium project with the Polluted Troposphere programme.\r\n\r\nThe TORCH project consisted of two intensive measurement campaigns : TORCH1 in Writtle, Essex in 2003 and at the Weybourne Atmospheric Observatory, Norfolk, in 2004.\r\n\r\nWrittle site TORCH 1 \r\n- Based at Writtle College, near Chelmsford, Essex between 27th July - 30th August 2003.\r\n- The measurement site was located 20 miles from London and 10 miles from the M25 thus giving the opportunity to sample air recently outflowing from the London area.\r\n- Over 50 scientists from 7 institutions were involved, using a comprehensive suite of instruments that measured: O3, CO, NO, NO2, C2-C8 hydrocarbons, C1-C4 oxygenated hydrocarbons, PAN, Peroxides (Organic and Inorganic), Organic nitrates, OH and HO2 radicals, Sum of RO2 + HO2 radicals, OH chemical lifetime, Photolysis frequencies (e.g. j(O1D), j(NO2), j (HCHO), Aerosol number and size distribution, Aerosol composition, Local meteorology, and 5 and 10 day back trajectories. Many of the instruments were also part of the Universities Facility for Atmospheric Measurement (UFAM).\r\n\r\nOver 50 scientists from 7 institutions were involved, using a comprehensive suite of instruments that measured: O3, CO, NO, NO2, C2-C8 hydrocarbons, C1-C4 oxygenated hydrocarbons, PAN, Peroxides (Organic and Inorganic), Organic nitrates, OH and HO2 radicals, Sum of RO2 + HO2 radicals, OH chemical lifetime, Photolysis frequencies (e.g. j(O1D), j(NO2), j (HCHO), Aerosol number and size distribution, Aerosol composition, Local meteorology, and 5 and 10 day back trajectories. Many of the instruments are also part of the Universities Facility for Atmospheric Measurement (UFAM).",
    "keywords": "Polluted Troposphere, TORCH1, Chemistry, Model, Meteorology",
    "status": "completed",
    "publicationState": "published",
    "identifier_set": [],
    "observationCollection": [
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    ],
    "parentProject": "https://api.catalogue.ceda.ac.uk/api/v2/projects/14347/?format=api",
    "subProject": [],
    "responsiblepartyinfo_set": [
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}