David is an atmospheric scientist with over 20 years’ experience in Earth observation, remote sensing, and spectroscopy and imaging spanning the microwave, terahertz, infrared, visible, and ultraviolet.  Currently he is researching the polar middle atmosphere, with particular emphasis on the chemistry and dynamics associated with solar variability and energetic particle precipitation, and developing new atmospheric observing techniques.  He is also the Innovation Champion for the Space Weather & Atmosphere science team at BAS.  Previously he investigated the long-wave and short-wave radiative properties of atmospheric gases and aerosols for applications including climate research, stratospheric ozone chemistry, satellite remote sensing, pollution monitoring, and planetary sciences.  He has held eight NERC and HEIF grants, six as lead principal investigator (PI) and two as co-investigator (co-I).  He has also managed world-class research facilities for prestigious academic institutions and business enterprises and carried out contract research for numerous organisations including ESA, NASA, EUMETSAT, dstl, the European Union, and industry.

Qualifications

• PhD Physical Chemistry (University of Reading), Thesis title: ‘High Vibrational Overtone Spectroscopy’ [1987-1990].
• BSc Chemical Physics (University of Reading), Upper Second Class honours [1984-1987].

Career History

• Atmospheric Scientist, British Antarctic Survey (BAS) [2008-Present] :-
  • Leading BAS research on the polar middle atmosphere, with particular emphasis on chemistry and dynamics associated with solar processes.
  • Managed a state‑of‑the-art passive microwave radiometer project at BAS and its remote deployment/operation at the Norwegian Troll station, Antarctica (2008‑2010), the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) in northern Norway (2011‑2012), and Halley VI station, Antarctica (2013 onwards).
  • Developing new measurement techniques for atmospheric wind observations and investigating the environmental sensing applications of new technologies including digital FFT spectrometers, chip spectrometers, and sub-millimetre astronomical telescopes.
  • Innovation Champion for the  Space Weather & Atmosphere science team.
• Technical Specialist – Space & Environmental Instrumentation, Qi3 Ltd [2007-2008].
• Applications Scientist, TeraView Ltd [2003-2006].
• Instrument Scientist / Molecular Spectroscopy Group Leader, Rutherford Appleton Laboratory (RAL) [1992-2003].
• Postdoctoral Researcher, University of Northumbria [1991-1992].
• Postdoctoral Researcher, University of Helsinki, Finland [1991].

Research interests

• Solar variability and space weather impacts on the Earth’s middle atmosphere.
• Remote sensing and modelling of atmospheric chemistry, energetics, and dynamics.
• Molecular spectroscopy and the radiative properties of atmospheric gases and aerosols.
• Development of experimental techniques in optical spectroscopy and imaging.

Collaborations

• Lead PI, NERC Technologies Proof-of-Concept grant NE/P003478/1, Satellite TV-based Ozone and OH Observations using Radiometric Measurements (STO₃RM) [6/2016-6/2017].  Joint project with Dr Mark Clilverd at BAS.
• Lead PI, NERC Standard grant NE/J022187/1, NO_x and HO_x Production by Energetic Electrons and Impacts on Polar Stratospheric Ozone (NOHO) [6/2013-12/2016].  Joint project with Prof. John Plane at the University of Leeds, Chemistry Department.
• Lead PI (BAS), Higher Education Innovation Funding (HEIF) University of Cambridge / BAS Collaborative Innovation project SPECTRO-ICE [7/2013‑9/2015].  Joint project with Prof. Stafford Withington at the University of Cambridge, Cavendish Laboratory and Prof. Peter Wadhams at the University of Cambridge, Department for Applied Mathematics and Theoretical Physics.
• Lead PI, NERC Technologies Proof‑of‑Concept grant NE/L012197/1, Atmospheric Wind Evaluation using Spectroscopic Observations of Millimetre-wave Emission (AWESOME) [6/2014‑4/2015].  Joint project with Dr Hugh Pumphrey at the University of Edinburgh, School of GeoSciences.
• Co-I, NERC Standard grant NE/J008125/1, Quantifying Energetic Particle Precipitation into the Atmosphere (QEPPA) [1/2013‑12/2015].  Joint project with Prof. Farideh Honary at Lancaster University, Physics Department.
• Lead PI, NERC Small grant NE/I016767/1, Influence of Energetic Particle Precipitation and Meteorology on NO_x and Ozone Variability in the Arctic Middle Atmosphere [7/2011-6/2012].
• Lead PI, NERC non-thematic grant GR3/11097, Observations of the Near-infrared and Visible Transmittance of the Atmosphere: Application to Shortwave Radiative Forcing [6/1997-5/1999].
• Co-I, NERC thematic Laboratory Studies in Atmospheric Chemistry (LSAC) grant GST/02/1945, Laboratory Simulation of Sulphuric Acid Aerosol and the Growth of Model PSC Particles [5/1996-4/1999].

David has also recently collaborated with international groups at NTNU (Trondheim, Norway), the Norwegian Polar Institute (Tromsø, Norway) and Norwegian Troll station (Antarctica), the Max Planck Institute for Solar System Research (Göttingen, Germany), the Finnish Meteorological Institute (Helsinki, Finland), the National Center for Atmospheric Research (USA), Sodankylä Geophysical Observatory (Finland), the Swedish Institute for Space Research/IRF (Kiruna, Sweden), Bern University (Switzerland), and the University of Otago (New Zealand).

David has published 94 papers in peer-reviewed journals, with over 3000 citations and a Thomson h-index of 25.

Journal Publications

1.  Botschwina, P., N. C. Handy, L. Halonen, J. F. Gaw, T. K. Ha, M. Lewerenz, M. Quack, N. Sheppard, J. L. Duncan, S. Brodersen, J. E. Baggott, D. W. Law, K. K. Lehmann, J. S. Hutchinson, M. Winnewisser, T. A. Holme, G. D. Carney, G. Duxbury, J. Tennyson, M. S. Child, A. V. Chambers, B. T. Sutcliffe, P. Jensen, R. Marquardt, D. A. Newnham, B. R. Henry, I. M. Mills, S. L. Coy, G. L. Caldow, A. M. Smith, R. Walsh, M. N. R. Ashfold, D. C. McKean, R. O. Watts, E. Carrasquillo, A. L. Utz, F. F. Crim, F. Temps, J. Santamaría, C. Getino-Gonzalez, G. S. Ezra, J. P. Simons, A. García-Ayllón, and R. D. Levine (1988), Proceedings of Faraday Symposium 23 on Molecular Vibrations – General discussion, J. Chem. Soc., Faraday Trans. 2, 84 (9) 1555-1642, doi:10.1039/F29888401555.
2. Holland, J. K., D. A. Newnham, and I. M. Mills (1990), Vibrational overtone spectra of monofluoroacetylene: A preliminary report, Mol. Phys., 70 (2) 319-330, doi:10.1080/00268979000101021.
3. Baggott, J. E., D. A. Newnham, J. L. Duncan, D. C. McKean, and A. Brown (1990), C-H and C-D interbond coupling in CHD₂Cl, Mol. Phys., 70 (4) 715-727, doi:10.1080/00268979000102681.
4. Holland, S. M., R. J. Stickland, M. N. R. Ashfold, D. A. Newnham, and I. M. Mills (1991), Vibrationally mediated photodissociation of nitrous acid, J. Chem. Soc., Faraday Trans., 87 (21) 3461-3471, doi:10.1039/FT9918703461.
5. Newnham, D. A., X. W. Zhan, O. Vaittinen, E. Kauppi, and L. Halonen (1992), High-resolution photoacoustic study of the 4ν₁ band system of monofluoroacetylene using a titanium:sapphire ring laser, Chem. Phys. Lett., 189 (3) 205-210, doi:10.1016/0009-2614(92)85125-T.
6. Holland, J. K., D. A. Newnham, I. M. Mills, and M. Herman (1992), Vibration-rotation spectra of monofluoroacetylene: 1700 to 7500 cm^-1, J. Mol. Spectrosc., 151 (2), 346-368, doi:10.1016/0022-2852(92)90571-5.
7. Newnham, D., J. Ballard, and M. Page (1993), Infrared absorbance cross-sections for dinitrogen pentoxide vapour, J. Quant. Spectrosc. Rad. Transfer, 50 (6) 571-577, doi:10.1016/0022-4073(93)90023-B.
8. Ballard, J., D. Newnham, and M. Page (1993), A novel cryogenic molecular-beam – application to supersonic jet spectroscopy of gases, Chem. Phys. Lett., 208 (3-4) 295-298, doi:10.1016/0009-2614(93)89078-V.
9. Herbertson, D. L., D. A. Newnham, and M. R. Levy (1994), Multiple potential surfaces and movable energy barriers in the chemiluminescent reaction Mn + SnCl₄, Can. J. Chem., 72 (3) 850-864, doi:10.1139/v94-112.
10. Newnham, D., J. Ballard, and M. Page (1995), Doppler-limited spectroscopy at cryogenic temperatures: application of collision cooling, Rev. Sci. Instrum., 66 (9) 4475-4481, doi:10.1063/1.1145345.
11. Newnham, D., and J. Ballard (1995), Fourier transform infrared spectroscopy of HCFC-142b vapour, J. Quant. Spectrosc. Rad. Transfer, 53 (5) 471-479, doi:10.1016/0022-4073(95)90047-0.
12. Ballard, J., and D. Newnham (1995), Experimental spectroscopy of atmospheric gases, in Molecular Collisions in the Atmosphere, Eds. A. Ernesti, J. M. Hutson, and C. E. Roche (CCP6, Daresbury).
13. Newnham, D. A., and M. R. Levy (1996), Chemiluminescence in the reaction of Mn Atoms with SiCl₄, J. Phys. Chem., 100 (8) 2799-2808, doi:10.1021/jp952785e.
14. Newnham, D., M. Page, and J. Ballard (1996), Infrared band strengths of HFC-134a vapour, J. Quant. Spectrosc. Rad. Transfer, 55 (3) 373-381, doi:10.1016/0022-4073(95)00164-6.
15. Smith, K., D. Newnham, M. Page, J. Ballard, and G. Duxbury (1996), Infrared band strengths and absorption cross-sections of HFC-32 vapour, J. Quant. Spectrosc. Rad. Transfer, 56 (1) 73-82, doi:10.1016/0022-4073(96)00019-2.
16. Smith, K. M., G. Duxbury, D. A. Newnham, and J. Ballard (1997), High-resolution mid-IR molecular absorption spectroscopy of collisionally cooled hydrofluorocarbon vapours, J. Chem. Soc., Faraday Trans., 93 (16) 2735-2740, doi:10.1039/A701475I.
17. Heathfield, A. E., C. Anastasi, J. Ballard, D. A. Newnham, and A. McCulloch (1998), Integrated infrared absorption coefficients of CF₃OCF₂H and CH₃OCF₂CF₂H at 297, 253 and 213 K, J. Quant. Spectrosc. Rad. Transfer, 59 (1-2) 91-97, doi:10.1016/S0022-4073(97)00166-0.
18. Duxbury, G., K. Smith, M. McPhail, R. McPheat, J. Ballard, and D. Newnham (1998), The synergy of submillimetre and infrared spectroscopy in predicting global warming effects of CFC replacement molecules, MSMW’98 – Symposium Proceedings, 1 & 2, 40-43, doi:10.1109/MSMW.1998.758908.
19. Smith, K., D. Newnham, M. Page, J. Ballard, and G. Duxbury (1998), Infrared absorption cross-sections and integrated absorption intensities of HFC-134 and HFC-143a vapour, J. Quant. Spectrosc. Rad. Transfer, 59 (3-5) 437-451, doi:10.1016/S0022-4073(97)00114-3.
20. Palmer, M. H., R. R. J. Maier, F. Hegelund, and D. A. Newnham (1998), Structure and high-resolution IR spectroscopy of 1,2,4-triazine vapour, J. Mol. Spectrosc., 192 (2) 331-337, doi:10.1006/jmsp.1998.7707.
21. Newnham, D. A. and J. Ballard (1998), Visible absorption cross sections and integrated absorption intensities of molecular oxygen (O₂ and O₄), J. Geophys. Res., 103 (D22) 28801-28815, doi:10.1029/98JD02799.
22. Ballard, J., D. A. Newnham, and A. E. Heathfield (1998), Laboratory based FT spectroscopy in support of atmospheric science, Fourier Transform Spectroscopy, Eleventh International Conference, 430, 128-147, Ed. J. A. de Haseth (AIP Conf. Proc. 430, New York), doi:10.1063/1.55799.
23. Smith, K., D. Newnham, M. Page, J. Ballard, and G. Duxbury (1999), Infrared absorption cross-sections and integrated absorption intensities of HFC-134 and HFC-143a vapour, J. Quant. Spectrosc. Rad. Transfer, 61 (4) 563, doi:10.1016/S0022-4073(98)00033-8.
24. Smith, K. M., G. Duxbury, D. A. Newnham, and J. Ballard (1999), A high-resolution analysis of the ν₃ and ν₉ absorption bands of difluoromethane, J. Mol. Spectrosc., 193 (1) 166-173, doi:10.1006/jmsp.1998.7734.
25. Smith, K. M., and D. A. Newnham (1999), Near-infrared absorption spectroscopy of oxygen and nitrogen gas mixtures, Chem. Phys. Lett., 308 (1-2) 1-6, doi:10.1016/S0009-2614(99)00584-9.
26. Newman, S. M., I. C. Lane, A. J. Orr-Ewing, D. A. Newnham, and J. Ballard (1999), Integrated absorption intensity and Einstein coefficients for the O₂ a¹Δ_g-X³S_g^– (0,0) transition: A comparison of cavity ringdown and high resolution Fourier transform spectroscopy with a long-path absorption cell, J. Chem. Phys., 110 (22) 10749-10757, doi:10.1063/1.479018.
27. Jacquinet-Husson, N., E. Arié, J. Ballard, A. Barbe, G. Bjoraker, B. Bonnet, L. R. Brown, C. Camy-Peyret, J. P. Champion, A. Chédin, A. Chursin, C. Clerbaux, G. Duxbury, J.-M. Flaud, N. Fourrié, A. Fayt, G. Graner, R. Gamache, A. Goldman, V. Golovko, G. Guelachvili, J. M. Hartmann, J. C. Hilico, J. Hillman, G. Lefèvre, E. Lellouch, S. N. Mikhailenko, O. V. Naumenko, V. Nemtchinov, D. A. Newnham, A. Nikitin, J. Orphal, A. Perrin, D. C. Reuter, C. P. Rinsland, L. Rosenmann, L. S. Rothman, N. A. Scott, J. Selby, L. N. Sinitsa, J. M. Sirota, A. M. Smith, K. M. Smith, V. G. Tyuterev, R. H. Tipping, S. Urban, P. Varanasi, and M. Weber (1999), The 1997 spectroscopic GEISA databank, J. Quant. Spectrosc. Rad. Transfer, 62 (2) 205-254, doi:10.1016/S0022-4073(98)00111-3.
28. Heathfield, A. E., D. A. Newnham, J. Ballard, R. G. Grainger, and A. Lambert (1999), Infrared and visible Fourier-transform spectra of sulfuric-acid-water aerosols at 230 and 294 K, Appl. Opt., 38 (30) 6408-6420, doi:10.1364/AO.38.006408.
29. Smith, K. M. and D. A. Newnham (2000), Near-infrared absorption cross sections and integrated absorption intensities of molecular oxygen (O₂, O₂-O₂, and O₂-N₂), J. Geophys. Res., 105 (D6), 7383-7396, doi:10.1029/1999JD901171.
30. Belmiloud, D., R. Schermaul, K. M. Smith, N. F. Zobov, J. W. Brault, R. C. M. Learner, D. A. Newnham, and J. Tennyson (2000), New studies of the visible and near‐infrared absorption by water vapour and some problems with the HITRAN database, Geophys. Res. Lett., 27 (22), 3703-3706, doi:10.1029/2000GL011899.
31. Ward, K. M., G. Duxbury, M. Lorono, W. Henze, P. B. Davies, and D. A. Newnham (2000), High-resolution Fourier transform and diode-laser spectroscopy of the ν₆ fundamental of C₂F₆ and associated hot bands, J. Mol. Spectrosc., 204 (2) 268-274, doi:10.1006/jmsp.2000.8228.
32. Newman, S. M., A. J. Orr-Ewing, D. A. Newnham, and J. Ballard (2000), Temperature and pressure dependence of linewidths and integrated absorption intensities for the O₂ a¹Δ – X³Σ_g^– (0,0) transition, J. Phys. Chem. A, 104 (42) 9467-9480, doi:10.1021/jp001640r.
33. Ballard, J., R. J. Knight, D. A. Newnham, J. Vander Auwera, M. Herman, G. DiLonardo, G. Masciarelli, F. M. Nicolaisen, J. A. Buekes, L. K. Christiansen, G. Duxbury, R. McPheat, K. P. Shine, E. J. Highwood, R. Freckleton, and C. Bruning (2000), SWAGG Project – Introduction, J. Quant. Spectrosc. Rad. Transfer, 66 (2) 107-108, doi:10.1016/S0022-4073(99)00225-3.
34. Ballard, J., R. J. Knight, D. A. Newnham, J. Vander Auwera, M. Herman, G. Di Lonardo, G. Masciarelli, F. M. Nicolaisen, J. A. Beukes, L. K. Christensen, R. McPheat, G. Duxbury, R. Freckleton, and K. P. Shine (2000), An intercomparison of laboratory measurements of absorption cross-sections and integrated absorption intensities for HCFC-22, J. Quant. Spectrosc. Rad. Transfer, 66 (2) 109-128, doi:10.1016/S0022-4073(99)00211-3.
35. Ballard, J., R. J. Knight, and D. A. Newnham (2000), Infrared absorption cross-sections and integrated absorption intensities of perfluoroethane and cis-perfluorocyclobutane, J. Quant. Spectrosc. Rad. Transfer, 66 (2) 199-212, doi:10.1016/S0022-4073(99)00217-4.
36. Smith, K. M., D. A. Newnham, and R. G. Williams (2001), Collision-induced absorption of solar radiation in the atmosphere by molecular oxygen at 1.27 μm: Field observations and model calculations, J. Geophys. Res., 106 (D7) 7541-7552, doi:10.1029/2000JD900699.
37. Smith, K. M., and D. A. Newnham (2001), High-resolution atmospheric absorption by water vapour in the 830-985 nm region: Evaluation of spectroscopic databases, Geophys. Res. Lett., 28 (16) 3115-3118, doi:10.1029/2001GL013155.
38. Schermaul, R., R. C. M. Learner, D. A. Newnham, R. G. Williams, J. Ballard, N. F. Zobov, D. Belmiloud, and J. Tennyson (2001), The water vapour spectrum in the region 8600-15000 cm^‑1: experimental and theoretical studies for a new spectral line database. I: Laboratory measurements, J. Mol. Spectrosc., 208 (1) 32-42, doi:10.1006/jmsp.2001.8373.
39. Schermaul, R., R. C. M. Learner, D. A. Newnham, J. Ballard, N. F. Zobov, D. Belmiloud, and J. Tennyson (2001), The water vapour spectrum in the region 8800-15000 cm^-1: experimental and theoretical studies for a new spectral line database. II: Linelist construction, J. Mol. Spectrosc., 208 (1) 43-50, doi:10.1006/jmsp.2001.8374.
40. Newnham, D. A., R. A. McPheat, and J. Ballard (2001), Laboratory studies of atmospheric gases and aerosols at the RAL Molecular Spectroscopy Facility, IRS 2000: Current Problems in Atmospheric Radiation, 643-646.
41. Mohammed-Tahrin, N., A. M. South, D. A. Newnham, and R. L. Jones (2001), A new accurate wavelength calibration for the ozone absorption cross-section in the near-UV spectral region, and its effect on the retrieval of BrO from measurements of zenith-scattered sunlight, J. Geophys. Res., 106 (D9) 9897-9907, doi:10.1029/2000JD900743.
42. McPheat, R. A., D. A. Newnham, R. G. Williams, and J. Ballard (2001), Large-volume, coolable spectroscopic cell for aerosol studies, Appl. Opt., 40 (36) 6581-6586, doi:10.1364/AO.40.006581.
43. Mason, N. J., N. C. Jones, L. Kaminski, B. A. Osborne, G. Marston, M. A. Fernandez, I. C. Walker, E. A. Seddon, J. Ballard, and D. A. Newnham (2001), VUV optical absorption and energy loss spectroscopy of chlorine nitrate, Int. J. Mass Spectrom., 205 (1-3) 183-196, doi:10.1016/S1387-3806(00)00375-4.
44. Chagas, J. C. S., D. A. Newnham, K. M. Smith, and K. P. Shine (2001), Effects of improvements in near-infrared water vapour line intensities on short-wave atmospheric absorption, Geophys. Res. Lett., 28 (12) 2401-2404, doi:10.1029/2000GL012412.
45. Bass, S. F., R. G. Grainger, R. A. McPheat, D. A. Newnham, and J. J. Remedios (2001), Spectroscopic studies of laboratory generated polar stratospheric cloud particles, IRS 2000: Current Problems in Atmospheric Radiation, 623-626.
46. Smith, K. M., G. Duxbury, D. A. Newnham, and J. Ballard (2002), A high-resolution analysis of the ν₃ absorption band of trifluoromethane, J. Mol. Spectrosc., 212 (1) 6-16, doi:10.1006/jmsp.2002.8525.
47. Nash, K. L., A. E. Heathfield, D. A. Newnham, and A. B. Horn (2002), Infrared spectroscopic studies of the heterogeneous interaction of gas-phase HCl and Cl₂ with aqueous sulfuric acid aerosols at 190 K, Phys. Chem. Chem. Phys., 4 (12) 2539-2545, doi:10.1039/B202150C.
48. McPheat, R. A., S. F. Bass, D. A. Newnham, J. Ballard, and J. J. Remedios (2002), Comparison of aerosol and thin film spectra of supercooled ternary solution aerosol, J. Geophys. Res., 107 (D19) 4371, doi:10.1029/2001JD000641.
49. Chagas, J. C. S., D. A. Newnham, K. M. Smith, and K. P. Shine (2002), Impact of new measurements of oxygen collision-induced absorption on estimates of short-wave atmospheric absorption, Q. J. R. Meteorol. Soc., 128 (585) 2377-2396, doi:10.1256/qj.01.159.
50. Veihelmann, B., R. Lang, K. M. Smith, D. A. Newnham, and W. J. van der Zande (2002), Evaluation of spectroscopic databases of water vapor between 585 and 600 nm, Geophys. Res. Lett., 29 (15), 1752, doi:10.1029/2002GL015330.
51. Raffael, K. D., D. M. Smith, and D. A. Newnham (2003), High-resolution Fourier-transform infrared spectroscopy of the ν₁ and ν₈ fundamental bands of sulphur tetrafluoride (SF₄), Mol. Phys., 101 (8) 1095-1104, doi:10.1080/0026897031000068497.
52. Raffael, K. D., D. M. Smith, and D. A. Newnham (2003), Fourier-transform infrared spectroscopy of the ν₆ band of sulfur tetrafluoride, SF₄, J. Mol. Spectrosc., 218 (1) 108-113, doi:10.1016/S0022-2852(02)00054-1.
53. McCulloch, M. T., E. L. Normand, N. Langford, G. Duxbury, and D. A. Newnham (2003), Highly sensitive detection of trace gases using the time-resolved frequency downchirp from pulsed quantum-cascade lasers, J. Opt. Soc. Am. B: Opt. Phys., 20 (8) 1761-1768, doi:10.1364/JOSAB.20.001761.
54. Maurellis, A. N., R. Lang, J. E. Williams, W. J. van der Zande, K. Smith, D. A. Newnham, J. Tennyson, and R. N. Tolchenov (2003), The impact of new water vapor spectroscopy on satellite retrievals, in Weakly Interacting Molecular Pairs: Unconventional Absorbers of Radiation in the Atmosphere, Eds. C. Camy-Peyret and A. A. Vigasin, NATO Science Series, 27, 259-272, doi:10.1007/978-94-010-0025-3_23.
55. Mason, N. J., P. Limão Vieira, S. Eden, P. Kendall, S. Pathak, A. Dawes, J. Tennyson, P. Tegeder, M. Kitajima, M. Okamoto, K. Sunohara, H. Tanaka, H. Cho, S. Samukawa, S. V. Hoffmann, D. Newnham, and S. M. Spyrou (2003), VUV and low energy electron impact study of electronic state spectroscopy of CF₃I, Int. J. Mass Spectrom., 223 (1-3) 647-660, doi:10.1016/S1387-3806(02)00939-9.
56. Kendall, P. A., N. J. Mason, G. A. Buchanan, G. Marston, P. Tegeder, A. Dawes, S. Eden, P. Limão-Vieira, and D. A. Newnham (2003), Temperature dependent high-resolution infrared photoabsorption cross-sections of trifluoromethyl sulphur pentafluoride, Chem. Phys., 287 (1-2) 137-142, doi:10.1016/S0301-0104(02)00985-0.
57. Hill, C., D. A. Newnham, and J. M. Brown (2003), Pressure-shift measurements of the oxygen A-band by Fourier-transform spectroscopy, J. Mol. Spectrosc., 219 (1) 65-69, doi:10.1016/S0022-2852(03)00017-1.
58. Davies, C. J., D. A. Newnham, and D. M. Smith (2003), High-resolution Fourier-transform infrared spectroscopy of the ν₂ fundamental band of thionyl fluoride, SOF₂, Phys. Chem. Chem. Phys., 5, 3, 446-450, doi:10.1039/B210153J.
59. Couling, S. B., J. Fletcher, A. B. Horn, D. A. Newnham, R. A. McPheat, and R. G. Williams (2003), First detection of molecular hydrate complexes in sulfuric acid aerosols, Phys. Chem. Chem. Phys., 5, 19, 4108-4113, doi:10.1039/B306620G.
60. Rothman, L. S., A. Barbe, D. C. Benner, L. R. Brown, C. Camy-Peyret, M. R. Carleer, K. Chance, C. Clerbaux, V. Dana, V. M. Devi, A. Fayt, J.-M. Flaud, R. R. Gamache, A. Goldman, D. Jacquemart, K. W. Jucks, W. J. Lafferty, J.-Y. Mandin, S. T. Massie, V. Nemtchinov, D. A. Newnham, A. Perrin, C. P. Rinsland, J. Schroeder, K. M. Smith, M. A. H. Smith, K. Tang, R. A. Toth, J. Vander Auwera, P. Varanasi, and K. Yoshino (2003), The HITRAN molecular spectroscopic database: edition of 2000 including updates through 2001, J. Quant. Spectrosc. Radiat. Transfer, 82 (1-4) 5-44, doi:10.1016/S0022-4073(03)00146-8.
61. Hill, C., J. M. Brown, and D. A. Newnham, (2003), An upper limit for the magnitude of pressure shifts in the O₂ a¹Δ – X³Σ_g^– (0,0) band, J. Mol. Spectrosc., 221, 286–287, doi:10.1016/S0022-2852(03)00227-3.
62. Zhang, X. C., P. C. M. Planken, S. Withington, M. Havenith, K. Unterrainer, J. Faist, D. Van der Weide, M. Johnston, D. Newnham, and H. Roskos (2004), Towards terahertz near-field microscopy – Discussion, Philos. Trans. R. Soc. London, Ser. A, 362 (1815) 319-321, doi:10.1098/rsta.2003.1316.
63. Van der Weide, D., P. F. Taday, K. Wood, M. Chamberlain, C. Phillips, D. Newnham, M Towrie, and I. Appelquist (2004), Applications of terahertz spectroscopy to pharmaceutical sciences – Discussion, Philos. Trans. R. Soc. London, Ser. A, 362 (1815) 363-364, doi:10.1098/rsta.2003.1321.
64. Tribe, W. R., D. A. Newnham, P. F. Taday, and M. C. Kemp (2004), Hidden object detection: security applications of terahertz technology, Proc. SPIE 5354, Terahertz and Gigahertz Electronics and Photonics III, 168-176, doi:10.1117/12.543049.
65. Strachan, C. J., T. Rades, D. A. Newnham, K. C. Gordon, M. Pepper, and P. F. Taday (2004), Using terahertz pulsed spectroscopy to study crystallinity of pharmaceutical materials, Chem. Phys. Lett., 390 (1-3) 20-24, doi:10.1016/j.cplett.2004.03.117.
66. Smith, K. M., I. Ptashnik, D. A. Newnham, and K. P. Shine (2004), Absorption by water vapour in the 1 to 2 μm region, J. Quant. Spectrosc. Radiat. Transfer, 83 (3-4) 735-749, doi:10.1016/S0022-4073(03)00119-5.
67. Ptashnik, I. V., K. M. Smith, K. P. Shine, and D. A. Newnham (2004), Laboratory measurements of water vapour continuum absorption in spectral region 5000-5600 cm^-1: Evidence for water dimers, Q. J. R. Meteorol. Soc., 130 (602) 2391-2408, doi:10.1256/qj.03.178.
68. Albert, P., K. M. Smith, R. Bennartz, D. A. Newnham, and J. Fischer (2004), Satellite- and ground-based observations of atmospheric water vapor absorption in the 940 nm region, J. Quant. Spectrosc. Radiat. Transfer, 84 (2) 181-193, doi:10.1016/S0022-4073(03)00141-9.
69. Zeitler, J. A, D. A. Newnham, and P. F. Taday (2005), Temperature dependent terahertz pulsed spectroscopy of carbamazepine tablets, J. Pharm. Pharmacol., 57, S10-S10, doi:10.1211/002235705778248398.
70. Zeitler, J. A., D. A. Newnham, P. F. Taday, C. J. Strachan, M. Pepper, K. C. Gordon, and T. Rades (2005), Temperature dependent terahertz pulsed spectroscopy of carbamazepine, Thermochim. Acta, 436 (1-2) 71-77, doi:10.1016/j.tca.2005.07.006.
71. Strachan, C. J., P. F. Taday, D. A. Newnham, K. C. Gordon, J. A. Zeitler, M. Pepper, and T. Rades (2005), Using terahertz pulsed spectroscopy to quantify pharmaceutical polymorphism and crystallinity, J. Pharm. Sci., 94 (4) 837-846, doi:10.1002/jps.20281.
72. Shen, Y. C., P. F. Taday, D. A. Newnham, and M. Pepper (2005), Chemical mapping using reflection terahertz pulsed imaging, Semicond. Sci. Technol., 20 (7) S254-S257, doi:10.1088/0268-1242/20/7/016.
73. Shen, Y. C., P. F. Taday, D. A. Newnham, M. C. Kemp, and M. Pepper (2005), 3D chemical mapping using terahertz pulsed imaging, Proc. SPIE, 5727, Terahertz and Gigahertz Electronics and Photonics IV, 24-31, doi:10.1117/12.591472.
74. Newnham, D. A. (2005), Terahertz pulsed imaging and spectroscopy, Abstracts of Papers of the American Chemical Society, 230, U345-U346.
75. Newnham, D. A. (2005), Terahertz imaging, J. Pharm. Pharmacol., 57, S112-S112, doi:10.1211/002235705778248389.
76. Kaun, N., J. R. Baena, D. Newnham, and B. Lendl (2005), Terahertz pulsed spectroscopy as a new tool for measuring the structuring effect of solutes on water, Appl. Spectrosc., 59, 505-510, doi:10.1366/0003702053641351.
77. Jacquinet-Husson, N., N. A. Scott, A. Chédin, K. Garceran,; R. Armante, A. A. Chursin, A. Barbe, M. Birk, L. R. Brown, C. Camy-Peyret, C. Claveau, C. Clerbaux, P. F. Coheur, V. Dana, L. Daumont, M. R. Debacker-Barilly, J. M. Flaud, A. Goldman, A. Hamdouni, M. Hess, D. Jacquemart, P. Köpke, J. Y. Mandin, S. Massie, S. Mikhailenko, V. Nemtchinov, A. Nikitin, D. Newnham, A. Perrin, V. I. Perevalov, L. Régalia-Jarlot, A. Rublev, F. Schreier, I. Schult, K. M. Smith, S. A. Tashkun, J. L. Teffo, R. A. Toth, V. G. Tyuterev, J. V. Auwera, P. Varanasi, and G. Wagner (2005), The 2003 edition of the GEISA/IASI spectroscopic database, J. Quant. Spectrosc. Radiat. Transfer, 95 (4) 429-467, doi:10.1016/j.jqsrt.2004.12.004.
78. Eden, S., P. L. Vieira, N. J. Mason, M. Kitajima, M. Okamoto, H. Tanaka, D. Newnham, and S. Hoffmann (2005), Electron and photon impact studies of CF₃I, Electron Scattering: From Atoms, Molecules, Nuclei, and Bulk Matter, 33, 43, doi:10.1007/0-387-27567-3_4.
79. Allen, G., J. J. Remedios, D. A. Newnham, K. M. Smith, and P. S. Monks (2005), Improved mid-infrared cross-sections for peroxyacetyl nitrate (PAN) vapour, Atmos. Chem. Phys., 5, 47-56, doi:10.5194/acp-5-47-2005.
80. Zeitler, J. A., D. A. Newnham, P. F. Taday, T. L. Threlfall, R. W. Lancaster, R. W. Berg, C. J. Strachan, M. Pepper, K. C. Gordon, and T. Rades (2006), Characterization of temperature-induced phase transitions in five polymorphic forms of sulfathiazole by terahertz pulsed spectroscopy and differential scanning calorimetry, J. Pharm. Sci., 95 (11) 2486-2498, doi:10.1002/jps.20719.
81. Obradovic, J., D. A. Newnham, and P. F. Taday (2007), Attenuated total reflection explores the terahertz region, Am. Lab., 39, 16.
82. Zeitler, J. A., P. F. Taday, D. A. Newnham, M. Pepper, K. C. Gordon, and T. Rades (2007), Terahertz pulsed spectroscopy and imaging in the pharmaceutical setting – a review, J. Pharm. Pharmacol., 59 (2) 209-223, doi:10.1211/jpp.59.2.0008.
83. Jacquinet-Husson, N., N. A. Scott, A. Chédin, L. Crepeau, R. Armante, V. Capelle, J. Orphal, A. Coustenis, C. Boonne, N. Poulet-Crovisier, A. Barbe, M. Birk, L. R. Brown, C. Camy-Peyret, C. Claveau, K. Chance, N. Christidis, C. Clerbaux, P. F. Coheur, V. Dana, V; L. Daumont, M. R. De Backer-Barilly, G. Di Lonardo, J.-M. Flaud, A. Goldman, A. Hamdouni, M. Hess, M. D. Hurley, D. Jacquemart, I. Kleiner, P. Kopke, J.-Y. Mandin, S. Massie, S. Mikhailenko, V. Nemtchinov, A. Nikitin, D. Newnham, A. Perrin, V. I. Perevalov, S. Pinnock, L. Régalia-Jarlot, C. P. Rinsland, A. Rublev, F. Schreier, L. Schult, K. M. Smith, S. A. Tashkun, J. L. Teffo, R. A. Toth, V. G. Tyuterev, J. V. Auwera, P. Varanasi, and G. Wagner (2008), The GEISA spectroscopic database: Current and future archive for Earth and planetary atmosphere studies, J. Quant. Spectrosc. Radiat. Transfer, 109 (6) 1043-1059, doi:10.1016/j.jqsrt.2007.12.015.
84. Spencer, J. A., Z. Gao, T. Moore, L. F. Buhse, P. F. Taday, D. A. Newnham, Y. Shen, A. Portieri, and A. Husain (2008), Delayed release tablet dissolution related to coating thickness by terahertz pulsed image mapping, J. Pharm. Sci., 97 (4) 1543-1550, doi:10.1002/jps.21051.
85. Newnham, D. A., and P. F. Taday (2008), Pulsed terahertz attenuated total reflection spectroscopy, Appl. Spectrosc., 62 (4) 394-398, doi:10.1366/000370208784046731.
86. Newnham, D. A., P. J. Espy, M. A. Clilverd, C. J. Rodger, A. Seppälä, D. J. Maxfield, P. Hartogh, K. Holmén, and R. B. Horne (2011), Direct observations of nitric oxide produced by energetic electron precipitation into the Antarctic middle atmosphere, Geophys. Res. Lett., 38, L20104, doi:10.1029/2011GL048666.
87. Daae, M., P. J. Espy, H. N. Nesse Tyssøy, D. A. Newnham, J. Stadsnes, and F. Søraas (2012), The effect of energetic electron precipitation on middle mesospheric night-time ozone during and after a moderate geomagnetic storm, Geophys. Res. Lett., 39, L21811, doi:10.1029/2012GL053787.
88. Straub, C., P. J. Espy, R. E. Hibbins, and D. A. Newnham (2013), Mesospheric CO above Troll station, Antarctica observed by a ground based microwave radiometer, Earth Syst. Sci. Data, 5, 199-208, doi:10.5194/essd-5-199-2013.
89. Newnham, D. A., P. J. Espy, M. A. Clilverd, C. J. Rodger, A. Seppälä, D. J. Maxfield, P. Hartogh, C. Straub, K. Holmén, and R. B. Horne (2013), Observations of nitric oxide in the Antarctic middle atmosphere during recurrent geomagnetic storms, J. Geophys. Res. Space Physics, 118, 7874–7885, doi:10.1002/2013JA019056.
90. Daae, M., C. Straub, P. J. Espy, and D. A. Newnham (2014), Atmospheric ozone above Troll station, Antarctica observed by a ground based microwave radiometer, Earth Syst. Sci. Data, 6, 105-115, doi:10.5194/essd-6-105-2014.
91. Seppälä, A., M. A. Clilverd, M. J. Beharrell, C. J. Rodger, P. T. Verronen, M. E. Andersson, and D. A. Newnham (2015), Substorm-induced energetic electron precipitation: Impact on atmospheric chemistry, Geophys. Res. Lett., 42, 8172–8176, doi:10.1002/2015GL065523.
92. Newnham, D. A., G. P. Ford, T. Moffat-Griffin, and H. C. Pumphrey (2016), Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region, Atmos. Meas. Tech., 9, 3309-3323, doi:10.5194/amt-9-3309-2016.
93. Kovács, T., J. M. C. Plane, W. Feng, T. Nagy, M. P. Chipperfield, P.T. Verronen, M. E. Andersson, D. A. Newnham, M. A. Clilverd, and D. R. Marsh (2016), D-region ion–neutral coupled chemistry (Sodankylä Ion Chemistry, SIC) within the Whole Atmosphere Community Climate Model (WACCM 4) – WACCM-SIC and WACCM-rSIC, Geosci. Model Dev., 9, 3123-3136, doi:10.5194/gmd-9-3123-2016.
94. Turner, E. C., S. Withington, D. A. Newnham, P. Wadhams, A. E. Jones, and R. Clancy (2016), Simulation of submillimetre atmospheric spectra for characterising potential ground-based remote sensing observations, Atmos. Meas. Tech., 9, 5461-5485, doi:10.5194/amt-9-5461-2016.
95. Newnham, D. A., Clilverd, M. A., Rodger, C. J., Hendrickx, K., Megner, L., Kavanagh, A. J., et al. (2018). Observations and modeling of increased nitric oxide in the Antarctic polar middle atmosphere associated with geomagnetic storm‐driven energetic electron precipitation. Journal of Geophysical Research: Space Physics, 123. https://doi.org/10.1029/2018JA025507.
96. Macotela, E. L, Clilverd, M., Manninen, J., Moffat-Griffin, T., Newnham, D. A., Raita, T., and Rodger, C. J. (2019). D-region high latitude forcing factors. Journal of Geophysical Research: Space Physics, 124, 765-781. https://doi.org/10.1029/2018JA026049.
97. Newnham, D., Clilverd, M., Kosch, M., Seppälä, A., and Verronen, P. T. (2019). Simulation study for ground-based Ku-band microwave observations of ozone and hydroxyl in the polar middle atmosphere. Atmospheric Measurement Techniques, 12, 1375-1392. https://doi.org/10.5194/amt-12-1375-2019.
98. Macotela, E. L., Clilverd, M. A., Manninen, J., Thomson, N. R., Newnham, D. A., and Raita, T. (2019). The effect of ozone shadowing on the D‐region ionosphere during sunrise. Journal of Geophysical Research: Space Physics, 124. https://doi.org/10.1029/2018JA026415.

Published data-sets

1. Middle atmospheric carbon monoxide above Troll station, Antarctica from February 2008 – January 2010: Version 2.0 (2013), doi:10.5285/25d329ad-69de-4bd3-846d-427863b27781.
2. Middle atmospheric ozone above Troll Station, Antarctica, February 2008 – January 2010: Version 1.0 (2013), doi:nc3.

Reports and Conference Proceedings

1. Newnham, D., J. Ballard, and M. Page (1994), Infrared absorbance cross-sections for dinitrogen pentoxide vapour, in Infrared Spectroscopy of Ozone and Related Atmospheric Constituents, Eds. D. Hausamann and J.-M. Flaud, EC Air Pollution Report 52, Brussels.
2. Newnham, D. A., J. Ballard, and M. Page (1996), Visible absorption spectroscopy of molecular oxygen, Proc. Atmos. Spectrosc. Appl. Workshop, 31-35, Reims, France.
3. Richards, M. D., J. E. Harries, D. A. Newnham, J. Ballard, and M. Page (1996), Laboratory measurements of the {ν₃, ν₄} (11 μm), {ν₅, 2ν₉} (7.6 μm), and {ν₂} (5.8 μm) vibrational bands of HNO₃ vapour at room and low temperature, Proc. Atmos. Spectrosc. Appl. Workshop, 37-40, Reims, France.
4. Newnham, D. A., R. A. McPheat, and J. Ballard (1999), High resolution, quantitative infrared spectroscopy of water vapour and carbon dioxide at long optical pathlengths, Proc. Atmos. Spectrosc. Appl. Workshop, Reims, France.
5. Smith, K. M., and D. A. Newnham (1999), Near-infrared absorption spectroscopy and cross-sections of oxygen and nitrogen gas mixtures, Proc. Atmos. Spectrosc. Appl. Workshop, Reims, France.
6. Bass, S. F., R. G. Grainger, J. J. Remedios, D. A. Newnham, and A. Lambert (2000), Refractive indices of laboratory generated supercooled ternary solution aerosol, Conference Proceedings, International Quadrennial Ozone Symposium (Sapporo 2000), Sapporo, Hokkaido, Japan.
7. Bass, S. F., D. A. Newnham, J. Remedios, R. G. Grainger, and R. A. McPheat (2000), Spectroscopic studies of laboratory generated polar stratospheric cloud aerosols, Conference Proceedings, International Radiation Symposium (IRS) 2000, St Petersburg, Russia.
8. Newnham, D. A., R. A. McPheat, and J. Ballard (2000), Laboratory studies of atmospheric gases and aerosols at the RAL Molecular Spectroscopy Facility, Conference Proceedings, International Radiation Symposium (IRS) 2000, St Petersburg, Russia.
9. Newnham, D. A. and K. M. Smith (2000), High-resolution short-wave absorption by water vapour and molecular oxygen in the clear-sky atmosphere, Conference Proceedings, International Radiation Symposium (IRS) 2000, St Petersburg, Russia.
10. Newnham, D. A. (2001), NERC report on Laboratory Spectroscopy Requirements for Atmospheric Sensing Workshop, San Diego, USA. 

Contract Reports

1. Ballard, J., and D. A. Newnham (1995), A study of absorption cross sections in the UV and visible: Progress report 1, ESA Contract 11340/95/NL/CN; Serco Europe.
2. Ballard, J., and D. A. Newnham (1996), A study of absorption cross sections in the UV and visible: Progress report 2, ESA Contract 11340/95/NL/CN; Serco Europe.
3. Ballard, J., R. J. Knight, and D. A. Newnham (1997), Spectroscopy and warming potentials of atmospheric greenhouse gases (SWAGG): First year report, CEC Contract ENV4-CT95-0069; Rutherford Appleton Laboratory.
4. Ballard, J., R. J. Knight, and D. A. Newnham (1997), Spectroscopy and warming potentials of atmospheric greenhouse gases (SWAGG): Mid-term report, CEC Contract ENV4-CT95-0069; Rutherford Appleton Laboratory.
5. Ballard, J., and D. A. Newnham (1998), A study of absorption cross sections in the UV and Visible: Final report, ESA Contract 11340/95/NL/CN; Serco Europe.
6. Newnham, D. A. (1998), Molecular Spectroscopy Facility: Annual Report, 1 April 1997 – 31 March 1998, NERC Scientific Services; Natural Environment Research Council.
7. Ballard, J., R. J. Knight, and D. A. Newnham (1998), Spectroscopy and warming potentials of atmospheric greenhouse gases (SWAGG): Final report, CEC Contract ENV4-CT95-0069; Rutherford Appleton Laboratory.
8. Newnham, D. A. (1999), Measurement of H₂O absorption cross-sections for the exploitation of GOME data: Progress report 1, ESA Contract 13312/9/NL/SF; Serco Europe.
9. Newnham, D. A. (1999), Molecular Spectroscopy Facility: Annual Report, 1 April 1998 – 31 March 1999, NERC Scientific Services; Natural Environment Research Council.
10. Heathfield, A. E., D. A. Newnham, and J. Ballard (1999), Laboratory simulation of sulphuric acid aerosol and the growth of model PSC particles: Final report on NERC grant ref. GST/02/1245; Natural Environment Research Council.
11. Ballard, J., R. A. McPheat, and D. A. Newnham (1999), The POSTCODE project: Report for end of year 1, CEC Contract ENV4-CT97-05419; Rutherford Appleton Laboratory.
12. Newnham, D. A. (2000), Measurement of H₂O absorption cross-sections for the exploitation of GOME data: Final report, ESA Contract 13312/9/NL/SF; Serco Europe.
13. Newnham, D. A. (2000), Molecular Spectroscopy Facility: Annual Report, 1 April 1999 – 31 March 2000, NERC Scientific Services (Natural Environment Research Council).
14. Newnham, D. A. (2001), Molecular Spectroscopy Facility: Annual Report, 1 April 2000 – 31 March 2001, NERC Services & Facilities; Natural Environment Research Council.
15. Newnham, D. A. (2002), Support study on water vapour spectroscopy for IASI – Final report, EUMETSAT contract EUM/CO/01/939/DK.
16. Newnham, D. A. (2002), Support study on water vapour spectroscopy for IASI – Technical report, EUMETSAT contract EUM/CO/01/939/DK.
17. Newnham, D. A. (2002), Molecular Spectroscopy Facility: Annual Report, 1 April 2001 – 31 March 2002, NERC Services & Facilities; Natural Environment Research Council.

Publications from NERC Open Research Archive

• Newnham, D. (2022). Atmospheric observational datasets: Ozone vertical profiles in the polar middle atmosphere north of Ny Ålesund, Spitsbergen (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/19845e8e-d6ef-4f95-8961-4da60f8294d3

• Newnham, D., Rodger, C., & Hervig, M. (2020). Atmospheric observational and model datasets: Spatial distributions of nitric oxide (NO) in the winter time, high latitude Southern hemisphere atmosphere (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/0df08df3-8453-4cc0-a79d-70fed11ed220

• Newnham, D., Verronen, P., & Seppälä, A. (2018). Model data for simulating atmospheric microwave spectra at 11.072 GHz and 13.441 GHz and performing retrievals of ozone (O3) and hydroxyl (OH) vertical profiles (Version 1.0) [Data set]. Polar Data Centre, Natural Environment Research Council, UK. https://doi.org/10.5285/57858a9a-d814-412c-8e79-9a542cd055d4

• Daae, M., Espy, P., Straub, C., & Newnham, D. (2013). Middle atmospheric ozone above Troll station, Antarctica from February 2008 – January 2010 (Version “1.0”) [Data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK.. https://doi.org/10.5285/d371556f-92d2-4bcb-85da-ca8abfe37efc

• Espy, P., Straub, C., & Newnham, D. (2012). Middle atmospheric carbon monoxide above Troll station, Antarctica from February 2008 – January 2010 (Version 1.0) [Data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK.. https://doi.org/10.5285/de3e2092-406d-47a9-9205-3971a8dfb4a9

• Espy, P., Straub, C., & Newnham, D. (2012). Middle atmospheric carbon monoxide above Troll station, Antarctica from February 2008 – January 2010 (Version “2.0”) [Data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK.. https://doi.org/10.5285/25d329ad-69de-4bd3-846d-427863b27781

1. Decoding Ionospheric Dynamics

   DRIIVE researches how polar ionosphere changes affect satellite orbits, communications, and space weather forecasts.

   Read more of: Decoding Ionospheric Dynamics

   

David recently completed studies which show that energetic electrons entering the atmosphere following small geomagnetic storms produce odd nitrogen (NO_x) directly in the polar mesosphere, with nitric oxide abundance increased up to 2-3 orders of magnitude over background levels and ozone decreased by 20-70% at 60-75 km altitude.