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89 results on '"Drummond, J.R."'

52. letters.

Author

Shaw, B., Worthington, H., McCarthy, C., Bass, N.M., Whatley, R., Renson, T., Taylor, G., Forde, M.P., Martin, M.V., Porter, G., Foreman, P.C., Adusei, G., Jones, C., Drummond, J.R., and Stewart, F.M.J.

Subjects
DENTISTRY, MOUTHWASHES, NEEDLESTICK injury prevention
Abstract

Presents letter from readers of the periodical 'British Dental Journal' concerning dentistry in Great Britain. Prescription of fluoride mouthwash; Protection from needle stick injury; Community dental care.

Published
2001
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53. Line strengths, self-broadening, and line mixing in the 20[sup 0]0←01[sup 1]0 (Σ←Π)Q branch of carbon dioxide.

Author

Predoi-Cross, Adriana, Luo, Caiyan, Berman, R., Drummond, J. R., Drummond, J.R., May, A. D., and May, A.D.

Subjects
CARBON dioxide, SPECTRUM analysis
Abstract

Using a difference frequency spectrometer we have measured the Q(2) to Q(38) 20[sup 0]0←01[sup 1]0,Σ←Π transitions of carbon dioxide at 296 K and pressures up to 15 kPa. These low pressure spectra were analyzed using both the Voigt model, and an empirical line shape that blends together a hard collision model and a speed dependent Lorentzian profile. The broadening coefficients were obtained with an accuracy of 1% or better. The low density or first order low pressure line mixing parameters were also determined. We have compared both our measured low pressure line-mixing parameters and the complete band spectrum at high pressures with those predicted by a relaxation matrix calculated from an EPG fitting law. Spectra at the highest pressures were recorded using both the difference frequency spectrometer and an FTIR spectrometer, the temperature for the latter experiments being 303 K. The vibrational band intensity and linear pressure shift of the branch as a whole were also measured. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000
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54. Validation of ozone measurements from the atmospheric chemistry experiment (ACE)

Author

Dupuy, E., Walker, K.A., Kar, J., Boone, C.D., McElroy, C.T., Bernath, P.F., Drummond, J.R., Skelton, R., McLeod, S.D., Hughes, R.C., Nowlan, C.R., Dufour, D.G., Zou, J., Nichitiu, F., Strong, K., Baron, P., Bevilacqua, R.M., Blumenstock, T., Bodeker, G.E., Borsdorff, T., Bourassa, A.E., Bovensmann, H., Boyd, I.S., Bracher, A., Brogniez, C., Burrows, J.P., Catoire, V., Ceccherini, S., Chabrillat, S., Christensen, T., Coffey, M.T., Cortesi, U., Davies, J., De Clercq, C., Degenstein, D.A., De Maziere, M., Demoulin, P., Dodion, J., Firanski, B., Fischer, H., Forbes, G., Froidevaux, L., Fussen, D., Gerard, P., Godin-Beekman, S., Goutail, F., Granville, J., Griffith, D., Haley, C.S., Hannigan, J.W., Höpfner, M., Jin, J.J., Jones, A., Jones, N.B., Jucks, K., Kagawa, A., Kasai, Y., Kerzenmacher, T.E., Kleinböhl, A., Klekociuk, A.R., Kramer, I., Küllmann, H., Kuttippurath, J., Kyrölä, E., Lambert, J.C., Livesey, N.J., Llewellyn, E.J., Lloyd, N.D., Mahieu, E., Manney, G.L., Marshall, B.T., McConnell, J.C., McCormick, M.P., McDermid, I.S., McHugh, M., McLinden, C.A., Mellqvist, J., Mizutani, K., Murayama, Y., Murtagh, D.P., Oelhaf, H., Parrish, A., Petelina, S.V., Piccolo, C., Pommereau, J.P., Randall, C.E., Robert, C., Roth, C., Schneider, M., Senten, C., Steck, T., Strandberg, A., Strawbridge, K.B., Sussmann, R., Swart, D.P.J., Tarasick, D.W., Taylor, J.R., Tetard, C., Thomason, L.W., Thompson, A.M., Tully, M.B., Urban, J., Vanhellemont, F., Vigouroux, C., Clarmann, T.Von, Von Der Gathen, P., Savigny, C., Waters, J.W., Witte, J.C., Wolff, M., and Zawodny, J.M.

Subjects
13. Climate action
Abstract

This paper presents extensive {bias determination} analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. Here we compare the latest ozone data products from ACE-FTS and ACE-MAESTRO with coincident observations from nearly 20 satellite-borne, airborne, balloon-borne and ground-based instruments, by analysing volume mixing ratio profiles and partial column densities. The ACE-FTS version 2.2 Ozone Update product reports more ozone than most correlative measurements from the upper troposphere to the lower mesosphere. At altitude levels from 16 to 44 km, the average values of the mean relative differences are nearly all within +1 to +8%. At higher altitudes (45–60 km), the ACE-FTS ozone amounts are significantly larger than those of the comparison instruments, with mean relative differences of up to +40% (about +20% on average). For the ACE-MAESTRO version 1.2 ozone data product, mean relative differences are within ±10% (average values within ±6%) between 18 and 40 km for both the sunrise and sunset measurements. At higher altitudes (~35–55 km), systematic biases of opposite sign are found between the ACE-MAESTRO sunrise and sunset observations. While ozone amounts derived from the ACE-MAESTRO sunrise occultation data are often smaller than the coincident observations (with mean relative differences down to −10%), the sunset occultation profiles for ACE-MAESTRO show results that are qualitatively similar to ACE-FTS, indicating a large positive bias (mean relative differences within +10 to +30%) in the 45–55 km altitude range. In contrast, there is no significant systematic difference in bias found for the ACE-FTS sunrise and sunset measurements.

60. A multiple sampling ionization chamber (MUSIC) for measuring the charge of relativistic heavy ions

Author

Christie, W.B., primary, Romero, J.L., additional, Brady, F.P., additional, Tull, C.E., additional, Castaneda, C.M., additional, Barasch, E.F., additional, Webb, M.L., additional, Drummond, J.R., additional, Crawford, H.J., additional, Flores, I., additional, Greiner, D.E., additional, Lindstrom, P.J., additional, Sann, H., additional, and Young, J.C., additional

Published
1987
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65. The MANTRA campaigns - studying the stratosphere from balloons

Author

Strong, K., primary, Bernath, P., additional, Drummond, J.R., additional, Fast, H., additional, McConnell, J.C., additional, McElroy, C.T., additional, Quine, B.M., additional, Shepherd, T.G., additional, Solheim, B.H., additional, Sommerfeldt, D., additional, Fogal, P.F., additional, Murcray, F.J., additional, and Goutail, F., additional

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66. A Canadian atmospheric and geological mission to Mars

Author

Drummond, J.R., primary, Hipkin, V.J., additional, Tolton, B., additional, Strong, K., additional, Quine, B.M., additional, Rivard, B.A., additional, Caldwell, J.J., additional, McConnell, J.C., additional, Davis, G.R., additional, Chateauneuf, F., additional, and Hackett, J., additional

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72. Validation of MOPITT retrievals of carbon monoxide

Author

Emmons, L., primary, Deeter, M., additional, Edwards, D., additional, Gille, J., additional, Ziskin, D., additional, Attie, J.-L., additional, Warner, J., additional, Drummond, J.R., additional, Yurganov, L., additional, Novelli, P., additional, Pougatchev, N., additional, and Murcray, F., additional

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