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A Simultaneous Observation of Lightning by ASIM, Colombia‐Lightning Mapping Array, GLM, and ISS‐LIS.

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Title: A Simultaneous Observation of Lightning by ASIM, Colombia‐Lightning Mapping Array, GLM, and ISS‐LIS.
Authors: Montanyà, Joan1 montanya@ee.upc.edu, López, Jesús A.1, Morales Rodriguez, Carlos A.2, van der Velde, Oscar A.1, Fabró, Ferran1,3, Pineda, Nicolau1,3, Navarro‐González, Javier4, Reglero, Víctor4, Neubert, Torsten5, Chanrion, Olivier5, Goodman, Steven J.6, Østgaard, Nikolai7, Ladino‐Rincon, Alfonso8, Romero, David1, Solà, Glòria1, Horta, Ricard1, Freijó, Modesto1
Source: Journal of Geophysical Research. Atmospheres. Mar2021, Vol. 126 Issue 6, p1-17. 17p.
Subject Terms: *Thunderstorms, Detectors, Opacity (Optics), Luminosity
Company/Entity: International Space Station
Abstract: The Atmosphere‐Space Interactions Monitor (ASIM) on the International Space Station (ISS) provides optical radiances and images of lightning flashes in several spectral bands. This work presents a lightning flash simultaneously observed from space by ASIM, the Geostationary Lightning Mapper (GLM) and the Lightning Imaging Sensor on the International Space Station (ISS‐LIS); and from ground by the Colombia‐Lightning Mapping Array (Colombia‐LMA). Volumetric weather radar provides reflectivity data to help to interpret the effects of the cloud particles on the observed optical features. We found that surges in radiance in the band at 777.4 nm appear to be related mostly with lightning processes involving currents as well with branching of lightning leaders with new leader development. In cloud areas with reflectivity <18 dBZ above the lightning leader channels at altitudes >7 km, these have been imaged by ASIM and GLM. But in the region with reflectivity <23 dBZ above the lightning leader channels, despite its lower cloud tops and similar altitudes of lightning channels, these have been almost undetectable. The calculated relative optical depths are consistent with the observed optical intensity at the cloud top. Despite the effects of the cloud particles and the altitude of the lightning channels on the attenuation of the luminosity, the luminosity of the lightning channels due to different processes is fundamental for the imaging of lightning from space. Key Points: Features of luminosity from a lightning flash detected by Atmosphere‐Space Interactions Monitor, Geostationary Lightning Mapper, and Lightning Imaging Sensor are related with leader development and cloud propertiesSurges in 777.4 nm luminosity are associated with return stroke currents, continuing currents, recoil leaders, and leader branchingAltitude of lightning leaders, cloud particles above lightning channels as well as channel luminosity influence the detection of light [ABSTRACT FROM AUTHOR]
Copyright of Journal of Geophysical Research. Atmospheres is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The Atmosphere‐Space Interactions Monitor (ASIM) on the International Space Station (ISS) provides optical radiances and images of lightning flashes in several spectral bands. This work presents a lightning flash simultaneously observed from space by ASIM, the Geostationary Lightning Mapper (GLM) and the Lightning Imaging Sensor on the International Space Station (ISS‐LIS); and from ground by the Colombia‐Lightning Mapping Array (Colombia‐LMA). Volumetric weather radar provides reflectivity data to help to interpret the effects of the cloud particles on the observed optical features. We found that surges in radiance in the band at 777.4 nm appear to be related mostly with lightning processes involving currents as well with branching of lightning leaders with new leader development. In cloud areas with reflectivity &lt;18 dBZ above the lightning leader channels at altitudes &gt;7 km, these have been imaged by ASIM and GLM. But in the region with reflectivity &lt;23 dBZ above the lightning leader channels, despite its lower cloud tops and similar altitudes of lightning channels, these have been almost undetectable. The calculated relative optical depths are consistent with the observed optical intensity at the cloud top. Despite the effects of the cloud particles and the altitude of the lightning channels on the attenuation of the luminosity, the luminosity of the lightning channels due to different processes is fundamental for the imaging of lightning from space. Key Points: Features of luminosity from a lightning flash detected by Atmosphere‐Space Interactions Monitor, Geostationary Lightning Mapper, and Lightning Imaging Sensor are related with leader development and cloud propertiesSurges in 777.4 nm luminosity are associated with return stroke currents, continuing currents, recoil leaders, and leader branchingAltitude of lightning leaders, cloud particles above lightning channels as well as channel luminosity influence the detection of light [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Journal of Geophysical Research. Atmospheres is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.1029/2020JD033735
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        Text: English
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      – SubjectFull: Thunderstorms
        Type: general
      – SubjectFull: Detectors
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      – SubjectFull: Opacity (Optics)
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