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  • 1
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    Empirical stratospheric models (1980)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Keywords: GEOPHYSICS
    Type: NASA, Washington Upper Atmosphere Res. Program; p 199-200
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  • 2
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    Stratospheric nitric oxide and ozone measurements using photoionization mass spectrometry and UV absorption (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Nitric oxide has been measured in situ between 38.4 and 29.8 km by a new technique, photoionization mass spectrometry. Data indicate a peak mixing ratio of 5.7 plus or minus 0.35 ppbv at 37.5 km and only 0.2 plus or minus 0.2 ppbv at 32.8 km with a sharp gradient in concentration between 33 and 34 km. Simultaneous in-situ measurements of the ozone concentration show no significant feature at that altitude. The rapid decrease in mixing ratio is not predicted by current theory.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 5; Jan. 197
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  • 3
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    Rotation invariant probability distributions on the surface of a sphere, with applications to geodesy (1967)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Gravity anomalies and linear transforms over rotating spheres treated as random process with spectrum analysis and applications for geodesy
    Keywords: GEOPHYSICS
    Type: NASA-CR-85742 , RE-27 , INTERN. COLLOQ. ON DYN. METHODS IN SATELLITE GEODESY; May 22, 1967 - May 26, 1967; PARIS
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  • 4
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    The role of airborne eddy correlation measurements in global change studies (1994)
    In:  Other Sources
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    Publication Date: 2011-08-24
    Description: We have obtained measurements of the mean and turbulent quantities of heat, moisture, momentum, O3, CO, and CH4 from an airborne platform. Species flux measurements obtained from these data provide unique regional-scale information which can be used to evaluate 'scaled-up' flux estimates based on smaller scale observations. Airborne flux data also provide a basis for assessing the uncertainties associated with large-scale ground level flux extrapolations. Airborne constituent budget analyses are possible with this suite of measurements. The local change in the mean value of a parameter can be explained in terms of horizontal advection, vertical turbulent transport, and, in the case of chemically reactive species (i.e., O3), in situ production or destruction. This technique is used to indicate a direct relationship between O3 precursors and the measured in situ production rate.
    Keywords: GEOPHYSICS
    Type: Advances in Space Research (ISSN 0273-1177); 14; 1; p. (1)183-(1)186
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  • 5
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    Stratospheric observations of the attenuated solar irradiance in the Schumann-Runge band absorption region of molecular oxygen (1981)
    In:  Other Sources
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    Publication Date: 2011-08-18
    Description: A spectrometer flown on the first Solar Absorption Balloon Experiment (SABE-1) observed the attenuated solar irradiance between 184 and 202 nm from an altitude near 40 km. These measurements provide a check on the absorption cross sections of molecular oxygen in the spectral region of the Schumann-Runge bands. Comparison of the measurements with calculations based on cross sections derived from laboratory data shows a general agreement although the irradiance measurements have large error bars near the centers of the absorption bands. The results imply that the 184-200 nm solar irradiance that penetrates to the stratosphere can be computed to an accuracy of + or - 30% or better by using presently available cross sections.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 86; Oct. 20
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  • 6
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    The solar irradiance from 200 to 330 nm (1981)
    In:  Other Sources
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    Publication Date: 2011-08-18
    Description: The full disk solar spectrum over the wavelength range 200-330 nm is measured with a spectral resolution of 0.12 nm. The measurement is performed by using a double monochromator pointed at the sun from a high altitude parachute. Only small corrections are required to account for atmospheric absorption. Good agreement is obtained with previously reported measurements.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 86; Oct. 20
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  • 7
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    Solar irradiance in the stratosphere - Implications for the Herzberg continuum absorption of O2 (1982)
    In:  Other Sources
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    Publication Date: 2011-08-18
    Description: A set of solar irradiance observations is analyzed that were performed from the third Solar Absorption Balloon Experiment (SABE-3) as the payload ascended through the stratosphere from 32 to 39 km. Comparison of these data with calculations of the attenuated irradiance based on simultaneous ozone and pressure measurements made from the payload suggests a refinement of the cross section values used in photochemical models. More ultraviolet radiation in the 200-210 nm spectral region reaches the middle stratosphere than is predicted by the absorption data presently available. It is suggested that significantly smaller values for the Herzberg continuum of O2 be used in future models.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 9; Apr. 198
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  • 8
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    The aeronomy of vibrationally excited ozone (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Theoretical calculations show that above 80 km in the earth's atmosphere the production of vibrationally excited ozone by chemical processes leads to number densities which are usually larger than those expected for local thermodynamic equilibrium. Quenching of highly excited molecules produced in O+O2+M, O3+M provided a significant source of the lower lying states above the mesopause while the 9.6 microns emission of O3 (0,0,1) was a major sink. Analysis of available laboratory results implied that reactions involving excited ozone play a significant role in the global ozone balance despite the relatively small abundance of the molecule. However, this effect is implicit in many of the rate coefficients currently used in stratospheric calculations. In the upper mesosphere and lower thermosphere, where the excited state populations differ from those for thermal equilibrium, published reaction rate data are not necessarily applicable to aeronomic calculations.
    Keywords: GEOPHYSICS
    Type: NASA-TM-82025
    Format: application/pdf
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  • 9
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    Penetration of solar irradiance in the Schumann-Runge bands of O2 - A comparison of balloon-borne measurements and calculations (1981)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Measurements of the attenuated solar irradiance made from the STRATCOM VIII balloon are compared with calculated values of the solar irradiance reaching the 40 km level for a solar zenith angle of 66.18 deg. The ability of theory to match intensity maxima which correspond to the cross section minima between the bands is investigated. The comparisons show that model results are too small by a factor of 1.8 between 199 and 22 nm, which is attributed to a systematic calibration offset between the balloon data and the irradiances of Bruckner et al. (1976). A large disagreement between the observed and calculated intensities at peaks H and I results from an error in the cross sections used in current aeronomic work.
    Keywords: GEOPHYSICS
    Type: In: Quadrennial International Ozone Symposium; Aug 04, 1980 - Aug 09, 1980; Boulder, CO
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  • 10
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    Radiative processes (1985)
    In:  CASI
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    Publication Date: 2019-08-27
    Description: Solar radiation and the processes that control its deposition in the Earth atmosphere are considered. The published data obtained since 1978 define a reference solar spectral irradiance for use in atmospheric chemical and dynamical studies, while long term satellite measurements are now providing information on variations in the output of the Sun over a range of time scales. As concerns absorption of solar radiation in the atmosphere, new cross section data for molecular oxygen and ozone are now available. Line-by-line calculations used to predict infrared flux divergences, both as regards assumptions made in radiative transfer calculations and in the spectroscopic parameters used as inputs are examined. Also examined are the influence of radiative processes on planetary scale wave activity, photochemical acceleration of radiative damping, and the breakdown of local thermodynamic equilibrium at mesospheric altitudes.
    Keywords: GEOPHYSICS
    Type: Atmospheric Ozone 1985. Assessment of our Understanding of the Processes Controlling its Present Distribution and Change, Volume 1; 46 p
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