Recent work on sprite spectrum in Taiwan

  • Author(s): Min-Ruey Lu, Pei-Yu Chen, Cheng-Ling Kuo, Chien-Chung Chou, Bin-Xing Wu, Abe Shinsuke, Han-Tzong Su, Rue-Ron Hsu, Sheng-Hsiang Wang, Neng-Huei Lin, Lou-Chuang Lee
  • DOI: 10.3319/TAO.2016.08.26.02
  • Keywords: Sprite, Spectroimager, Lightning
  • Citation: Lu, M.-R., P.-Y. Chen, C.-L. Kuo, C.-C. Chou, B.-X. Wu, S. Abe, H.-T. Su, R.-R. Hsu, S.-H. Wang, N.-H. Lin, and L.-C. Lee, 2017: Recent work on sprite spectrum in Taiwan. Terr. Atmos. Ocean. Sci., 28, 625-636, doi: 10.3319/TAO.2016.08.26.02
  • Sprite spectra recorded by two types of spectroimager (slit and slitless)
  • Calibrations for sprite spectra
  • Advantages and shortcomings of slit and slitless spectroimager

campaigns in Taiwan. We first introduce two types of spectroimagers, the slit and slitless types, and discuss their advantages and shortcomings. Next we explore the instrument development and procedures undertaken for this study. In 2006, a slit spectroimager was installed for a sprite campaign and on 15 August of that year, two sprite spectra were recorded using the slit spectroimager along with seven sprites, one halo, one ELVES emission and two jets. By the end of 2015, a slitless spectroimager had been successfully constructed and was ready to conduct additional investigations. On 7 May 2016, a sprite spectrum was recorded using the slitless spectroimager. Following an examination of the calibrations (comprising detection region field of view, wavelength calibration, and response curve), data analysis, and additional calibrations (comprising elevation and azimuthal angles, atmospheric transmittance, and theoretical wavelength calculations) performed in this study, we present the results from our observed sprite spectra using the slit and slitless spectroimagers.

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