Search Results - "Newnham, D. A."

Substorm-induced energetic electron precipitation: Impact on atmospheric chemistry by Seppälä, A., Clilverd, M. A., Beharrell, M. J., Rodger, C. J., Verronen, P. T., Andersson, M. E., Newnham, D. A.

“…Magnetospheric substorms drive energetic electron precipitation into the Earth's atmosphere. We use the output from a substorm model to describe electron…”
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Atmospheric ozone above Troll station, Antarctica observed by a ground based microwave radiometer by Daae, M, Straub, C, Espy, P. J, Newnham, D. A

“…This paper describes the stratospheric and mesospheric ozone profiles retrieved from spectral measurements of the 249.96 GHz O3 line, using the British…”
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Mesospheric CO above Troll station, Antarctica observed by a ground based microwave radiometer by Straub, C, Espy, P. J, Hibbins, R. E, Newnham, D. A

“…This paper presents mesospheric carbon monoxide (CO) data acquired by the ground-based microwave radiometer of the British Antarctic Survey (BAS radiometer)…”
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Spatial Distributions of Nitric Oxide in the Antarctic Wintertime Middle Atmosphere During Geomagnetic Storms by Newnham, D. A., Rodger, C. J., Marsh, D. R., Hervig, M. E., Clilverd, M. A.

“…Energetic electron precipitation leads to increased nitric oxide (NO) production in the mesosphere and lower thermosphere. NO distributions in the wintertime,…”
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Near-infrared absorption cross sections and integrated absorption intensities of molecular oxygen (O2, O2-O2, and O2-N2) by Smith, K. M., Newnham, D. A.

“…Near‐infrared absorption cross sections and integrated absorption intensities of gas phase oxygen and nitrogen mixtures have been determined from laboratory…”
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Observations and Modeling of Increased Nitric Oxide in the Antarctic Polar Middle Atmosphere Associated With Geomagnetic Storm‐Driven Energetic Electron Precipitation by Newnham, D. A., Clilverd, M. A., Rodger, C. J., Hendrickx, K., Megner, L., Kavanagh, A. J., Seppälä, A., Verronen, P. T., Andersson, M. E., Marsh, D. R., Kovács, T., Feng, W., Plane, J. M. C.

“…Nitric oxide (NO) produced in the polar middle and upper atmosphere by energetic particle precipitation depletes ozone in the mesosphere and, following…”
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Improved mid-infrared cross-sections for peroxyacetyl nitrate (PAN) vapour by Allen, G., Remedios, J. J., Newnham, D. A., Smith, K. M., Monks, P. S.

“…Absorption spectra of peroxyacetyl nitrate (PAN, CH3C(O)OONO2) vapour at room temperature (295K) have been measured in the mid-infrared range, 550-2200cm-1…”
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Evaluation of spectroscopic databases of water vapor between 585 and 600 nm by Veihelmann, B., Lang, R., Smith, K. M., Newnham, D. A., van der Zande, W. J.

“…The water vapor absorption band between 585 and 600 nm is suitable for atmospheric water vapor column retrieval from satellite data because saturation effects…”
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The HITRAN molecular spectroscopic database: edition of 2000 including updates through 2001 by Rothman, L.S., Barbe, A., Chris Benner, D., Brown, L.R., Camy-Peyret, C., Carleer, M.R., Chance, K., Clerbaux, C., Dana, V., Devi, V.M., Fayt, A., Flaud, J.-M., Gamache, R.R., Goldman, A., Jacquemart, D., Jucks, K.W., Lafferty, W.J., Mandin, J.-Y., Massie, S.T., Nemtchinov, V., Newnham, D.A., Perrin, A., Rinsland, C.P., Schroeder, J., Smith, K.M., Smith, M.A.H., Tang, K., Toth, R.A., Vander Auwera, J., Varanasi, P., Yoshino, K.

“…This paper describes the status circa 2001, of the HITRAN compilation that comprises the public edition available through 2001. The HITRAN compilation consists…”
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High-resolution atmospheric absorption by water vapor in the 830-985 nm region: Evaluation of spectroscopic databases by Smith, K. M., Newnham, D. A.

“…We present high spectral resolution (0.05 cm−1) ground‐based measurements of direct solar absorption in the clear‐sky atmosphere by water vapor over the 830 to…”
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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 by Mohamed‐Tahrin, N., South, A. M., Newnham, D. A., Jones, R. L.

“…Measurements of BrO in the atmosphere are now routinely made using UV absorption spectroscopy, but it has recently been noted that the retrieved BrO amounts…”
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Collision-induced absorption of solar radiation in the atmosphere by molecular oxygen at 1.27 μm: Field observations and model calculations by Smith, K. M., Newnham, D. A., Williams, R. G.

“…Significant uncertainties in the spectroscopy of collision‐induced absorption by oxygen have a limited knowledge of the contribution made by molecular oxygen…”
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Comparison of aerosol and thin film spectra of supercooled ternary solution aerosol by McPheat, R. A., Bass, S. F., Newnham, D. A., Ballard, J., Remedios, J. J.

“…Extinction spectra of H2SO4‐HNO3‐H2O supercooled ternary solution (STS) aerosol particles, fully covering the mid‐ and near‐infrared region from 750 to 13,000…”
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Impact of new measurements of oxygen collision‐induced absorption on estimates of short‐wave atmospheric absorption by Chagas, J. C. S., Newnham, D. A., Smith, K. M., Shine, K. P.

“…A new set of laboratory measurements of the 1.06 µm and 1.27 µm collision‐induced bands of gaseous oxygen is presented. Absorption by pure oxygen and mixtures…”
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Temperature dependent terahertz pulsed spectroscopy of carbamazepine by Zeitler, J. Axel, Newnham, David A., Taday, Philip F., Strachan, Clare J., Pepper, Michael, Gordon, Keith C., Rades, Thomas

“…In this study for the first time temperature dependent terahertz pulsed spectroscopy was performed on a pharmaceutical drug. The polymorphic conversion process…”
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Visible absorption cross sections and integrated absorption intensities of molecular oxygen (O2 and O4) by Newnham, David A., Ballard, John

“…Absorption spectra of gas‐phase molecular oxygen and zero air at temperatures of 223 and 283 K have been measured in the laboratory using a coolable…”
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The 1997 spectroscopic GEISA databank by Jacquinet-Husson, N., Arié, E., Ballard, J., Barbe, A., Bjoraker, G., Bonnet, B., Brown, L.R., Camy-Peyret, C., Champion, J.P., Chédin, A., Chursin, A., Clerbaux, C., Duxbury, G., Flaud, J.-M., Fourrié, N., Fayt, A., Graner, G., Gamache, R., Goldman, A., Golovko, Vl, Guelachvili, G., Hartmann, J.M., Hilico, J.C., Hillman, J., Lefèvre, G., Lellouch, E., Mikhaı̈lenko, S.N., Naumenko, O.V., Nemtchinov, V., Newnham, D.A., Nikitin, A., Orphal, J., Perrin, A., Reuter, D.C., Rinsland, C.P., Rosenmann, L., Rothman, L.S., Scott, N.A., Selby, J., Sinitsa, L.N., Sirota, J.M., Smith, A.M., Smith, K.M., Tyuterev, Vl.G., Tipping, R.H., Urban, S., Varanasi, P., Weber, M.

“…The current version GEISA-97 of the computer-accessible database system GEISA (Gestion et Etude des Informations Spectroscopiques Atmosphériques: Management…”
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Absorption by water vapour in the 1 to 2 mu m region by Smith, K M, Ptashnik, I, Newnham, DA, Shine, K P

“…The near-IR (in the range 5000-10 000 cm super(-1), 1-2 mu m) bands of water vapour have been measured in absorption in the laboratory at sub-Doppler spectral…”
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Temperature dependent high-resolution infrared photoabsorption cross-sections of trifluoromethyl sulphur pentafluoride by Kendall, P.A., Mason, N.J., Buchanan, G.A., Marston, G., Tegeder, P., Dawes, A., Eden, S., Limão-Vieira, P., Newnham, D.A.

“…Absolute infrared photoabsorption cross-sections have been measured over the range 600–1500 cm −1 for the powerful greenhouse gas SF 5CF 3 at high resolution…”
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An intercomparison of laboratory measurements of absorption cross-sections and integrated absorption intensities for HCFC-22 by Ballard, J., Knight, R.J., Newnham, D.A., Auwera, J.Vander, Herman, M., Lonardo, G.Di, Masciarelli, G., Nicolaisen, F.M., Beukes, J.A., Christensen, L.K., Mcpheat, R., Duxbury, G., Freckleton, R., Shine, K.P.

“…An intercomparison of measurements of infra-red absorption cross-sections and integrated absorption intensities in HCFC-22 has been carried out. Independent…”
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