Sprite spectra N 2 1PG band Identification. Quenching of N 2(a 1Π g, v = 0) by N 2, O 2, CO, CO 2, CH 4, H 2, and Ar. Electrical discharges into the stratosphere from the tops of intense thunderstorms. high plains in relation to their parent thunderstorm systems. Space-time structure of optical flashes and ionization changes produced by lightning-EMP. Optical spectral characteristics of sprites. Occurrences of sprites and elves above the Sea of Japan near Hokuriku in Winter. Lett., 23:2157.įukunishi, H., Takahashi, Y., Uchida, A., Sera, M., Adachi, K., and Miyasato, R. Elves: lightning-induced transient luminous events in the lower ionosphere. Television image of a large upward electrical discharge above a thunderstorm system. The auroral 2150 a feature - a contribution from lines of singly ionized atomic nitrogen. Global frequency and distribution of lightning as observed from space by the Optical Transient Detector. Academic Press.Ĭhristian, Hugh J., Blakeslee, R. Cross section for electron-impact excitation of the (0,0) first negative band of N + 2 from threshold to 3 keV. Observations of lightning in the stratosphere. J., Vonnegut, B., Brook, M., and McKune, J. Identification of sprites and elves with intensified video and broadband array photometry. This process is experimental and the keywords may be updated as the learning algorithm improves.īarrington-Leigh, C. These keywords were added by machine and not by the authors. The two channel AP is fitted with broadband blue and red filters. The spectrophotometer contains six filter photometer channels, their bandpasses ranging from the far ultraviolet to the near infrared regions. The imager is equipped with 5 selectable filters on a filter wheel and a 6 th open position. The ISUAL payload includes a visible wavelength intensified CCD imager, a boresighted six wavelength spectrophotometer, and a two channel Array Photometer (AP) with 16 vertically spaced horizontally wide sensitive regions. The project was supported by the National Space Program Office in Taiwan. The ISUAL project is an international collaboration between the National Cheng Kung University, Taiwan, Tohoku University, Japan and the instrument development team from the University of California, Berkeley. The Imager of Sprites and Upper Atmospheric Lightning (ISUAL) is a scienti fic payload on Taiwan’s FORMOSAT-2 (previously known as ROCSAT-2) that provides new observations of transient luminous events (TLEs) from space.
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