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I graduated from the University of York in 1985 with an Honours degree in Chemistry. Since then I have worked and studied at UEA, obtaining an M.Sc. in Atmospheric Science in 1987, followed by a Ph.D. I currently have a postdoctoral research position within the Atmospheric Composition Directorate of the National Centre for Atmospheric Science (NCAS) and am based in the Trace Gas Laboratory which forms part of LGMAC.
I have many years experience making measurements of atmospheric trace gases using a variety of analytical techniques, including gas chromatography (GC) and gas chromatography – mass spectrometry (GC-MS). One of my main research interests is in the global distribution and temporal trends of natural and anthropogenic halocarbons in the background atmosphere. Halocarbons are largely responsible for the observed depletion of stratospheric ozone and, as a result, the production of many of these chlorine and bromine-containing compounds has been phased out under the terms of the Montreal Protocol. In addition, some halocarbons are potent greenhouse gases and have been included in the recent Kyoto Protocol, which aims to reduce greenhouse gas emissions over the next 10-20 years. Air samples are routinely collected from various locations and platforms around the world, including aircraft (CARIBIC, FAAM), ships and selected ground-based stations (Cape Grim, Tasmania; Mace Head, Ireland; Weybourne, UK). The halocarbon data have featured regularly in international scientific assessments, including the quadrennial WMO/UNEP Assessment of Stratospheric Ozone Depletion and various IPCC reports on greenhouse gases and climate change.
More recently I have been using a relatively-new technique (proton transfer reaction mass spectrometry, or PTR-MS) for making measurements of other types of volatile organic compounds (e.g. hydrocarbons, oxygenated hydrocarbons) in the atmosphere. These compounds play an important role in the photochemical production of ozone in the troposphere. Currently we have one ground-based instrument, which is deployed at the Weybourne Atmospheric Observatory for long-term observations; and one aircraft instrument, which operates during intensive flying campaigns on the UK atmospheric research aircraft (FAAM). In recent years these campaigns have included deployments in the Azores (ICARTT, 2004) and West Africa (AMMA, 2006).
Fax: +44 (0)1603 591327
Key Research Interests and Expertise
Atmospheric composition and chemistry; global distribution, sources and temporal trends of ozone-depleting chemicals and greenhouse gases; role of volatile organic compounds (VOCs) and oxygenated VOCs in tropospheric chemistry; analytical techniques for atmospheric measurements including GC, GC-MS and PTR-MS.
- Oram, D.E., (2005). Chlorofluorocarbons and other halocarbons, in Encyclopedia of Analytical Science, Second Edition (Paul J. Worsfold, Alan Townshend and Colin F. Poole, eds.), Elsevier, Oxford, Vol. 2, pp. 80-89.
- Krol, M.C., J. Lelieveld, D.E. Oram, G.A. Sturrock, S.A. Penkett, C.A.M. Brenninkmeijer, V. Gros, J. Williams and H.A. Scheeren (2003). Continuing emissions of methyl chloroform from Europe, Nature, 421, 131-135.
- Sturges, W.T., T.J. Wallington, M.D. Hurley, K.P. Shine, K. Sihra, A. Engel, D.E. Oram, S.A. Penkett, R. Mulvaneyand C.A.M. Brenninkmeijer (2000). A potent greenhouse gas identified in the atmosphere: SF5CF3, Science, 289, 611-613, DOI: 10.1126/science.289.5479.611.
- Fraser, P.J., D.E. Oram, C.E. Reeves, S.A. Penkett and A. McCulloch (1999). Southern hemispheric halon trends (1978-1998) and global halon emissions, J. Geophys. Res., 104, 15985-15999, DOI: 10.1029/1999JD900113.
- Oram, D.E., W.T. Sturges, S.A. Penkett, A. McCulloch and P.J. Fraser (1998). Growth of fluoroform (CHF3, HFC-23) in the background atmosphere, Geophys. Res. Lett., 25, 35-38, DOI: 10.1029/97GL03483.
- Oram, D.E., C.E. Reeves, P.J. Fraser and S.A. Penkett (1995). Measurements of HCFC-142b and HCFC-141b in the Cape Grim air archive: 1978-1993, Geophys. Res. Lett., 22, 2741-2744, DOI: 10.1029/95GL02849.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Comprehensive volatile organic compound measurements and their implications for ground-level ozone formation in the two main urban areas of VietnamHien, T. T., Huy, D. H., Dominutti, P. A., Thien Chi, N. D., Hopkins, J. R., Shaw, M., Forster, G., Mills, G., Le, H. A. & Oram, D., 15 Jan 2022, In: Atmospheric Environment. 269, 118872.
Research output: Contribution to journal › Article › peer-review3 Citations (SciVal)
Soluble trace metals associated with atmospheric fine particulate matter in the two most populous cities in VietnamHien, T. T., Chi, N. D. T., Huy, D. H., Le, H. A., Oram, D. E., Forster, G. L., Mills, G. P. & Baker, A. R., Oct 2022, In: Atmospheric Environment: X. 15, 100178.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile3 Downloads (Pure)
Forster, G., Gondwe, M., Helfter, C., Hoyt, A. M., Jones, A. E., Lanoisellé, M., Moreno, I., Nisbet-Jones, P. B. R., Oram, D., Pasternak, D., Pitt, J. R. & 4 others, , 24 Jan 2022, In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 380, 2215, 20200449.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile1 Citation (Scopus)1 Downloads (Pure)
Aircraft-based observations of ozone-depleting substances in the upper troposphere and lower stratosphere in and above the Asian summer monsoonAdcock, K. E., Fraser, P. J., Hall, B. D., Langenfelds, R. L., Lee, G., Montzka, S. A., Oram, D. E., Röckmann, T., Stroh, F., Sturges, W. T., Vogel, B. & Laube, J. C., 16 Jan 2021, In: Journal of Geophysical Research: Atmospheres. 126, 1, e2020JD033137.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile6 Citations (SciVal)10 Downloads (Pure)
A synthesis inversion to constrain global emissions of two very short lived chlorocarbons: Dichloromethane, and PerchloroethyleneClaxton, T., Hossaini, R., Wilson, C., Montzka, S. A., Chipperfield, M. P., Wild, O., Bednarz, E. M., Carpenter, L. J., Andrews, S. J., Hackenberg, S. C., Mühle, J., Oram, D., Park, S., Park, M. K., Atlas, E., Navarro, M., Schauffler, S., Sherry, D., Vollmer, M., Schuck, T. & 9 others, , 27 Jun 2020, In: Journal of Geophysical Research: Atmospheres. 125, 12, e2019JD031818.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile5 Citations (Scopus)6 Downloads (Pure)