Details of Award
NERC Reference : NER/B/S/2002/00319
Development of a field instrument to measure the chemical lifetime of OH.
Grant Award
- Principal Investigator:
- Professor DE Heard, University of Leeds, Sch of Chemistry
- Co-Investigator:
- Professor M Pilling, University of Leeds, Sch of Chemistry
- Grant held at:
- University of Leeds, Sch of Chemistry
- Science Area:
- Atmospheric
- Overall Classification:
- Atmospheric
- ENRIs:
- Pollution and Waste
- Global Change
- Science Topics:
- Pollution
- Tropospheric Processes
- Atmospheric Kinetics
- Climate & Climate Change
- Abstract:
- The comparison of OH measurements with the calculations of constrained models is used to probe our understanding of chemical mechanisms in the troposphere. The modelled OH is often higher than measured, and missing sinks in the model have been postulated to explain the discrepancy. We propose to build an instrument to measure the chemical lifetime of OH, tau OH, that is given by the reciprocal of the sum of pseudo-first-order rate coefficients for reaction of OH, and compare it with the calculated tau OH using measured VOCs, NO2 and other sinks. The instrument will use an atmospheric pressure flow tube, with a sliding OH injector, that is sampled by a FAGE fluorescence cell, in which OH will be detected with excellent sensitivity. The new instrument will use some of the 308 nm radiation from the FAGE laser system, and will measure tau OH simultaneously with [OH] and [HO2].
- NERC Reference:
- NER/B/S/2002/00319
- Grant Stage:
- Completed
- Scheme:
- Small Grants Pre FEC
- Grant Status:
- Closed
- Programme:
- Small Grants
This grant award has a total value of £30,301
FDAB - Financial Details (Award breakdown by headings)
| Total - Staff | Total - T&S | Total - Other Costs | Total - Indirect Costs | Total - Equipment |
|---|---|---|---|---|
| £975 | £567 | £19,841 | £449 | £8,469 |
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