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  • 1
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    Global Lightning Nitrogen Oxides Production (2014)
    In:  CASI
    Details
    Publication Date: 2018-06-12
    Description: No abstract available
    Keywords: Meteorology and Climatology; Geophysics
    Type: M13-3063
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Retrieving Storm Electric Fields from Aircrfaft Field Mill Data: Part II: Applications (2006)
    In:  Other Sources
    Details
    Publication Date: 2018-06-12
    Description: The Lagrange multiplier theory developed in Part I of this study is applied to complete a relative calibration of a Citation aircraft that is instrumented with six field mill sensors. When side constraints related to average fields are used, the Lagrange multiplier method performs well in computer simulations. For mill measurement errors of 1 V m(sup -1) and a 5 V m(sup -1) error in the mean fair-weather field function, the 3D storm electric field is retrieved to within an error of about 12%. A side constraint that involves estimating the detailed structure of the fair-weather field was also tested using computer simulations. For mill measurement errors of 1 V m(sup -l), the method retrieves the 3D storm field to within an error of about 8% if the fair-weather field estimate is typically within 1 V m(sup -1) of the true fair-weather field. Using this type of side constraint and data from fair-weather field maneuvers taken on 29 June 2001, the Citation aircraft was calibrated. Absolute calibration was completed using the pitch down method developed in Part I, and conventional analyses. The resulting calibration matrices were then used to retrieve storm electric fields during a Citation flight on 2 June 2001. The storm field results are encouraging and agree favorably in many respects with results derived from earlier (iterative) techniques of calibration.
    Keywords: Electronics and Electrical Engineering
    Type: Journal of Atmospheric and Oceanic Technology
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Correlation of DIAL Ozone Observations with Lightning (2013)
    In:  CASI
    Details
    Publication Date: 2019-07-19
    Description: The purpose of this project is to see whether ozone maxima measured by the DIfferential Absorption Lidar (DIAL) instrument in Huntsville, AL may be traced back to lightning events occurring 24 48 hours beforehand. The methodology is to start with lidar measurements of ozone from DIAL as well as ozonesonde measurements. The HYbrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model is then used to determine the origin of these ozone maxima 2448 hours prior. Data from the National Lightning Detection Network (NLDN) are used to examine the presence/absence of lightning along the trajectory. This type of analysis suggests that lightningproduced NOx may be responsible for some of the ozone maxima over Huntsville.
    Keywords: Meteorology and Climatology; Geophysics
    Type: M13-2904 , 2013 American Geophysical Union (AGU) Fall Meeting; Dec 09, 2013 - Dec 13, 2013; San Francisco, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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