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  • 1
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    An “anomalous” triggered lightning flash in Florida (2013)
    American Geophysical Union
    Details
    Publication Date: 2013-04-25
    Print ISSN: 2169-897X
    Electronic ISSN: 2169-8996
    Topics: Geosciences , Physics
    Published by American Geophysical Union
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    PAPER CURRENT
  • 2
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    Characterization of return-stroke currents in rocket-triggered lightning (2009)
    American Geophysical Union
    Details
    Publication Date: 2009-02-11
    Print ISSN: 0148-0227
    Electronic ISSN: 2156-2202
    Topics: Geosciences
    Published by American Geophysical Union
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    PAPER CURRENT
  • 3
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    Oceanic Storm Characteristics Off the Kennedy Space Center Coast (2014)
    In:  CASI
    Details
    Publication Date: 2019-07-19
    Description: Natural cloud-to-ground lightning may behave differently depending on the characteristics of the attachment mediums, including the peak current (inferred from radiation fields) and the number of ground strike locations per flash. Existing literature has raised issues over the yea"rs on the behavior of lightning over ocean terrain and these phenomena are not yet well understood. To investigate lightning characteristics over differing terrain we will obtain identical observations over adjacent land and ocean regions during both clear air and thunderstorm periods comparing the electric field behavior over these various terrains. For this, a 3-meter NOAA buoy moored 20NM off the coast of the Kennedy Space Center was instrumented with an electric field mill and New Mexico Tech's slow antenna to measure the electric fields aloft and compared to the existing on-shore electric field mill suite of 31 sensors and a coastal slow antenna. New Mexico Tech's Lightning Mapping Array and the Eastern Range Cloud-to-Ground Lightning Surveillance System, along with the network of high-speed cameras being used to capture cloud-to-ground lightning strikes over the terrain regions to identify a valid data set and verify the electric fields. This is an on-going project with the potential for significant impact on the determination of lightning risk to objects on the ground. This presentation will provide results and instrumentation progress to date.
    Keywords: Meteorology and Climatology
    Type: KSC-2013-255 , American Meteorological Society Annual Meeting; Feb 02, 2014 - Feb 06, 2014; Atlanta, GA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Evaluation of the Performance Characteristics of CGLSS II and U.S. NLDN Using Ground-Truth Dalta from Launch Complex 398, Kennedy Space Center, Florida (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A new comprehensive lightning instrumentation system has been designed for Launch Complex 39B (LC39B) at the Kennedy Space Center, Florida. This new instrumentation system includes seven synchronized high-speed video cameras, current sensors installed on the nine downconductors of the new lightning protection system (LPS) for LC39B; four dH/dt, 3-axis measurement stations; and five dE/dt stations composed of two antennas each. The LPS received 8 direct lightning strikes (a total of 19 strokes) from March 31 through December 31 2011. The measured peak currents and locations are compared to those reported by the Cloud-to-Ground Lightning Surveillance System (CGLSS II) and the National Lightning Detection Network (NLDN). Results of comparison are presented and analyzed in this paper.
    Keywords: Meteorology and Climatology
    Type: KSC-2012-023R , 22nd bi-annual International Lightning Detection Conference (ILDC) and 4th International Lightning Meteorology Conference (ILMC); Apr 02, 2012 - Apr 05, 2012; Broomfield, CO; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Future Expansion of the Lightning Surveillance System at the Kennedy Space Center and the Cape Canaveral Air Force Station, Florida, USA (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The NASA Kennedy Space Center (KSC) and the Air Force Eastern Range (ER) use data from two cloud-to-ground (CG) lightning detection networks, the Cloud-to-Ground Lightning Surveillance System (CGLSS) and the U.S. National Lightning Detection Network (NLDN), and a volumetric mapping array, the lightning detection and ranging II (LDAR II) system: These systems are used to monitor and characterize lightning that is potentially hazardous to launch or ground operations and hardware. These systems are not perfect and both have documented missed lightning events when compared to the existing lightning surveillance system at Launch Complex 39B (LC39B). Because of this finding it is NASA's plan to install a lightning surveillance system around each of the active launch pads sharing site locations and triggering capabilities when possible. This paper shows how the existing lightning surveillance system at LC39B has performed in 2011 as well as the plan for the expansion around all active pads.
    Keywords: Meteorology and Climatology
    Type: KSC-2012-025R , KSC-2012-025 , 4th International Lightning Meteorology Conferemce (ILMC); Apr 02, 2012 - Apr 05, 2012; Broomfield, CO; United States|22nd International Lightning Detection Conference (ILDC); Apr 02, 2012 - Apr 05, 2012; Broomfield, CO; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    A New Lightning Instrumentation System for Pad 39B at the Kennedy Space Center Florida (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This viewgraph presentation describes a new lightning instrumentation system for pad 39B at Kennedy Space Center Florida. The contents include: 1) Background; 2) Instrumentation; 3) Meteorological Instrumentation; and 4) Lessons learned. A presentation of the data acquired at Camp Blanding is also shown.
    Keywords: Electronics and Electrical Engineering
    Type: KSC-2011-003 , 91st Annual AMS Meeting; Jan 23, 2011 - Jan 27, 2011; Seattle, WA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Oceanic Storm Characteristics off the Kennedy Space Center Coast (2014)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Natural cloud-to-ground lightning may behave differently depending on the characteristics of the attachment mediums, including the peak current (inferred from radiation fields) and the number of ground strike locations per flash. Existing literature has raised questions over the years on these characteristics of lightning over oceans, and the behaviors are not yet well understood. To investigate this we will obtain identical electric field observations over adjacent land and ocean regions during both clear air and thunderstorm periods. Oceanic observations will be obtained using a 3-meter NOAA buoy that has been instrumented with a Campbell Scientific electric field mill and New Mexico Techs slow antenna, to measure the electric fields aloft. We are currently obtaining measurements from this system on-shore at the Florida coast, to calibrate and better understand the behavior of the system in elevated-field environments. Sometime during winter 2013, this system will be moored 20NM off the coast of the Kennedy Space Center. Measurements from this system will be compared to the existing on-shore electric field mill suite of 31 sensors and a coastal slow antenna. Supporting observations will be provided by New Mexico Techs Lightning Mapping Array, the Eastern Range Cloud to Ground Lightning Surveillance System, and the National Lightning Detection Network. An existing network of high-speed cameras will be used to capture cloud-to-ground lightning strikes over the terrain regions to identify a valid data set for analysis. This on-going project will demonstrate the value of off-shore electric field measurements for safety-related decision making at KSC, and may improve our understanding of relative lightning risk to objects on the ground vs. ocean. This presentation will provide an overview of this new instrumentation, and a summary of our progress to date.
    Keywords: Meteorology and Climatology
    Type: KSC-E-DAA-TN13488 , International Lightning Detection Conference; Mar 18, 2014 - Mar 21, 2014; Tucson, AZ; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Triggered-Lightning Interaction with a Lightning Protective System: Current Distribution and Electromagnetic Environment (2010)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A new comprehensive lightning instrumentation system has been designed for Launch Complex 39B (LC3913) at the Kennedy Space Center, Florida. This new instrumentation system includes the synchronized recording of six high-speed video cameras; currents through the nine downconductors of the new lightning protection system for LC3913; four dH/dt, 3-axis measurement stations; and five dE/dt stations composed of two antennas each. A 20:1 scaled down model of the new Lightning Protection System (LPS) of LC39B was built at the International Center for Lightning Research and Testing, Camp Blanding, FL. This scaled down lightning protection system was instrumented with the transient recorders, digitizers, and sensors to be used in the final instrumentation installation at LC3913. The instrumentation used at the ICLRT is also a scaled-down instrumentation of the LC39B instrumentation. The scaled-down LPS was subjected to seven direct lightning strikes and six (four triggered and two natural nearby flashes) in 2010. The following measurements were acquired at the ICLRT: currents through the nine downconductors; two dl-/dt, 3-axis stations, one at the center of the LPS (underneath the catenary wires), and another 40 meters south from the center of the LPS; ten dE/dt stations, nine of them on the perimeter of the LPS and one at the center of the LPS (underneath the catenary wire system); and the incident current. Data from representative events are presented and analyzed in this paper.
    Keywords: Ground Support Systems and Facilities (Space)
    Type: KSC-2010-263 , 14th International Conference on Atmospheric Electricity; Aug 08, 2011 - Aug 12, 2011; Rio de Janeiro; Brazil
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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