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  • 1
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    The 1979 Southeastern Virginia Urban Plume Study. Volume 1: Description of experiments and selected aircraft data (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The Southeastern Virginia Urban Plume Study (SEV-UPS) utilizes remote sensors and satellite platforms to monitor the Earth's environment and resources. SEV-UPS focuses on the application of specific remote sensors to the monitoring and study of specific air quality problems. The 1979 SEV-UPS field program was conducted with specific objectives: (1) to provide correlative data to evaluate the Laser Absorption spectrometer ozone remote sensors; (2) to demonstrate the utility of the sensor for the study of urban ozone problems; (3) to provide additional insights into air quality phenomena occuring in Southeastern Virginia; and (4) to compare measurement results of various in situ measurement platforms. The field program included monitoring from 12 surface stations, 4 aircraft, 2 tethered balloons, 2 radiosonde release sites, and numerous surface meteorological observation sites. The aircraft monitored 03, NO, NOX, Bscat, temperature, and dewpoint temperature.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-81860-VOL-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    In situ correlative measurements for the ultraviolet differential absorption lidar and the high spectral resolution lidar air quality remote sensors: 1980 PEPE/NEROS program (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: In situ correlative measurements were obtained with a NASA aircraft in support of two NASA airborne remote sensors participating in the Environmental Protection Agency's 1980persistent elevated pollution episode (PEPE) and Northeast regional oxidant study (NEROS) field program in order to provide data for evaluating the capability of two remote sensors for measuring mixing layer height, and ozone and aerosol concentrations in the troposphere during the 1980 PEPE/NEROS program. The in situ aircraft was instrumented to measure temperature, dewpoint temperature, ozone concentrations, and light scattering coefficient. In situ measurements for ten correlative missions are given and discussed. Each data set is presented in graphical and tabular format aircraft flight plans are included.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-83107
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    In situ ozone data for evaluation of the laser absorption spectrometer ozone remote sensor: 1979 southeastern Virginia urban plume study summer field program (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Ozone data from the 1979 Southeastern Virginia Urban Study (SEV-UPS) field program are presented. The SEV-UPS was conducted for evaluation of an ozone remote sensor, the Laser Absorption Spectrometer. During the measurement program, remote-sensor evaluation was in two areas; (1) determination of the remote sensor's accuracy, repeatability, and operational characteristics, and (2) demonstration of the application of remotely sensed ozone data in air-quality studies. Data from six experiments designed to provide in situ ozone data for evaluation of the sensor in area 1, above, are presented. Experiments consisted of overflights of a test area with the remote sensor aircraft while in situ measurements with a second aircraft and selected surface stations provided correlative ozone data within the viewing area of the remote sensor.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-81831
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Summary of aircraft results for 1978 southeastern Virginia urban plume measurement study of ozone, nitrogen oxides, and methane (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Ozone production was determined from aircraft and surface in situ measurements, as well as from an airborne laser absorption spectrometer. Three aircraft and approximately 10 surface stations provided air-quality data. Extensive meteorological, mixing-layer-height, and ozone-precursor data were also measured. Approximately 50 hrs (9 flight days) of data from the aircraft equipped to monitor ozone, nitrogen oxides, dewpoint temperature, and temperature are presented. In addition, each experiment conducted is discussed.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-80146 , L-12981
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Spectral scales in the atmospheric boundary layer (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Wind data taken from 10 levels between 18 and 305 m were examined to determine the properties of atmospheric turbulence within and above the atmospheric surface layer into the PBL. The samples were averaged over 40 min intervals, with all periods of rain, fog, and other disturbances being eliminated from the 16 days of monitoring. Turbulence spectra were calculated using a fast Fourier transformation. The tower was located in rolling terrain covered with pine forests, waist-high scrub, and cultivated fields. Results are presented for the wavelength and Eulerian length scales, considering the neutral, stable, and unstable PBL. Correlation coefficients were found between velocity fluctuations and wavelengths for the stability classes. Good agreements were found for measured and computed spectra in all but unstable conditions.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Applied Meteorology; 21; Nov. 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    A review of methods for predicting air pollution dispersion (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Air pollution modeling, and problem areas in air pollution dispersion modeling were surveyed. Emission source inventory, meteorological data, and turbulent diffusion are discussed in terms of developing a dispersion model. Existing mathematical models of urban air pollution, and highway and airport models are discussed along with their limitations. Recommendations for improving modeling capabilities are included.
    Keywords: METEOROLOGY
    Type: NASA-SP-322 , LC-73-600023
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    The 1979 Southeastern Virginia Urban Plume Study. Volume 2: Data listings for NASA Cessna aircraft (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The data reported are these measured onboard the NASA Langley chartered Cessna aircraft. Data include ozone, nitrogen oxides, light scattering coefficient, temperature, dewpoint, and aircraft altitude.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-81860-VOL-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    A comparative study of tropospheric ground cloud diffusion models (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Calculated values obtained from several diffusion models are compared with field measurements. The diffusion models that are examined include: NASA/MSFC multilayer diffusion models, the meteorological effluent transport simulation model, the TREATS model, the atmsopheric diffusion particle in cell model, and a model for diffusion in shear flow (DISF). The atmospheric turbulence in the PBL turbulent wind field above and below 150 m is calculated. Concentrations calculated from the DISF model are found to correlate, in general, quite well with flight measurements.
    Keywords: ENVIRONMENT POLLUTION
    Type: Joint Conference on Applications of Air Pollution Meteorology; Nov 29, 1977 - Dec 02, 1977; Salt Lake City, UT
    Format: text
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    NASA TECHNICAL REPORTS
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