TY - JOUR
T1 - A simultaneous observation of lightning by ASIM, Colombia‐Lightning Mapping Array, GLM and ISS‐LIS
AU - Montanyà, Joan
AU - López, Jesús A.
AU - Morales Rodriguez, Carlos A.
AU - van der Velde, Oscar A.
AU - Fabró, Ferran
AU - Pineda, Nicolau
AU - Navarro‐González, Javier
AU - Reglero, Víctor
AU - Neubert, Torsten
AU - Chanrion, Olivier
AU - Goodman, Steven J.
AU - Østgaard, Nikolai
AU - Ladino‐Rincon, Alfonso
AU - Romero, David
AU - Solà, Glòria
AU - Horta, Ricard
AU - Freijó, Modesto
PY - 2021
Y1 - 2021
N2 - 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,
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.
AB - 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,
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.
U2 - 10.1029/2020JD033735
DO - 10.1029/2020JD033735
M3 - Journal article
SN - 0148-0227
VL - 126
JO - Journal of Geophysical Research: Atmospheres
JF - Journal of Geophysical Research: Atmospheres
IS - 6
ER -