First ten months of TGF observations by ASIM

N. Østgaard*, Torsten Neubert, V. Reglero, K. Ullaland, S. Yang, G. Genov, M. Marisaldi, A. Mezentsev, P. Kochkin, N. Lehtinen, D. Sarria, B.H. Qureshi, A. Solberg, C. Maiorana, K. Albrechtsen, C. Budtz‐Jørgensen, I. Kuvvetli, F. Christiansen, O. Chanrion, M. HeumesserJ. Navarro‐Gonzalez, P. Connell, C. Eyles, H. Christian, S. Al‐Nussirat

*Corresponding author for this work

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Abstract

The Atmosphere-Space Interactions Monitor (ASIM) was launched to the International Space Station (ISS) on April 2, 2018. The ASIM payload consists of two main instruments, the Modular X- and Gamma-ray Sensor (MXGS) for imaging and spectral analysis of Terrestrial Gamma-ray Flashes (TGFs) and the Modular Multi-spectral Imaging Array (MMIA) for detection, imaging and spectral analysis of Transient Luminous Events (TLEs) and lightning. ASIM is the first space mission designed for simultaneous observations of TLEs, TGFs and optical lightning. During the first ten months of operation (June 2, 2018 to April 1, 2019) the MXGS has observed 217 TGFs. In this paper we report several unprecedented measurements and new scientific results obtained by ASIM during this period: 1) simultaneous TGF observations by Fermi Gamma-ray Burst Monitor (GBM) and ASIM MXGS revealing the very good detection capability of ASIM MXGS and showing substructures in the TGF, 2) TGFs and Elves produced during the same lightning flash and even simultaneously have been observed, 3) first imaging of TGFs giving a unique source location, 4) strong statistical support for TGFs being produced during the upward propagation of a leader just before a large current pulse heats up the channel and emits a strong optical pulse, and 5) the t50 duration of TGFs observed from space is shorter than previously reported.
Original languageEnglish
JournalJournal of Geophysical Research: Atmospheres
ISSN0148-0227
DOIs
Publication statusAccepted/In press - 2019

Cite this

Østgaard, N., Neubert, T., Reglero, V., Ullaland, K., Yang, S., Genov, G., ... Al‐Nussirat, S. (Accepted/In press). First ten months of TGF observations by ASIM. Journal of Geophysical Research: Atmospheres. https://doi.org/10.1029/2019jd031214
Østgaard, N. ; Neubert, Torsten ; Reglero, V. ; Ullaland, K. ; Yang, S. ; Genov, G. ; Marisaldi, M. ; Mezentsev, A. ; Kochkin, P. ; Lehtinen, N. ; Sarria, D. ; Qureshi, B.H. ; Solberg, A. ; Maiorana, C. ; Albrechtsen, K. ; Budtz‐Jørgensen, C. ; Kuvvetli, I. ; Christiansen, F. ; Chanrion, O. ; Heumesser, M. ; Navarro‐Gonzalez, J. ; Connell, P. ; Eyles, C. ; Christian, H. ; Al‐Nussirat, S. / First ten months of TGF observations by ASIM. In: Journal of Geophysical Research: Atmospheres. 2019.
@article{a511f17931a04198b2f67b3fbbbee02e,
title = "First ten months of TGF observations by ASIM",
abstract = "The Atmosphere-Space Interactions Monitor (ASIM) was launched to the International Space Station (ISS) on April 2, 2018. The ASIM payload consists of two main instruments, the Modular X- and Gamma-ray Sensor (MXGS) for imaging and spectral analysis of Terrestrial Gamma-ray Flashes (TGFs) and the Modular Multi-spectral Imaging Array (MMIA) for detection, imaging and spectral analysis of Transient Luminous Events (TLEs) and lightning. ASIM is the first space mission designed for simultaneous observations of TLEs, TGFs and optical lightning. During the first ten months of operation (June 2, 2018 to April 1, 2019) the MXGS has observed 217 TGFs. In this paper we report several unprecedented measurements and new scientific results obtained by ASIM during this period: 1) simultaneous TGF observations by Fermi Gamma-ray Burst Monitor (GBM) and ASIM MXGS revealing the very good detection capability of ASIM MXGS and showing substructures in the TGF, 2) TGFs and Elves produced during the same lightning flash and even simultaneously have been observed, 3) first imaging of TGFs giving a unique source location, 4) strong statistical support for TGFs being produced during the upward propagation of a leader just before a large current pulse heats up the channel and emits a strong optical pulse, and 5) the t50 duration of TGFs observed from space is shorter than previously reported.",
author = "N. {\O}stgaard and Torsten Neubert and V. Reglero and K. Ullaland and S. Yang and G. Genov and M. Marisaldi and A. Mezentsev and P. Kochkin and N. Lehtinen and D. Sarria and B.H. Qureshi and A. Solberg and C. Maiorana and K. Albrechtsen and C. Budtz‐J{\o}rgensen and I. Kuvvetli and F. Christiansen and O. Chanrion and M. Heumesser and J. Navarro‐Gonzalez and P. Connell and C. Eyles and H. Christian and S. Al‐Nussirat",
year = "2019",
doi = "10.1029/2019jd031214",
language = "English",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
publisher = "American Geophysical Union",

}

Østgaard, N, Neubert, T, Reglero, V, Ullaland, K, Yang, S, Genov, G, Marisaldi, M, Mezentsev, A, Kochkin, P, Lehtinen, N, Sarria, D, Qureshi, BH, Solberg, A, Maiorana, C, Albrechtsen, K, Budtz‐Jørgensen, C, Kuvvetli, I, Christiansen, F, Chanrion, O, Heumesser, M, Navarro‐Gonzalez, J, Connell, P, Eyles, C, Christian, H & Al‐Nussirat, S 2019, 'First ten months of TGF observations by ASIM', Journal of Geophysical Research: Atmospheres. https://doi.org/10.1029/2019jd031214

First ten months of TGF observations by ASIM. / Østgaard, N.; Neubert, Torsten; Reglero, V.; Ullaland, K.; Yang, S.; Genov, G.; Marisaldi, M.; Mezentsev, A.; Kochkin, P.; Lehtinen, N.; Sarria, D.; Qureshi, B.H.; Solberg, A.; Maiorana, C.; Albrechtsen, K.; Budtz‐Jørgensen, C.; Kuvvetli, I.; Christiansen, F.; Chanrion, O.; Heumesser, M.; Navarro‐Gonzalez, J.; Connell, P.; Eyles, C.; Christian, H.; Al‐Nussirat, S.

In: Journal of Geophysical Research: Atmospheres, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - First ten months of TGF observations by ASIM

AU - Østgaard, N.

AU - Neubert, Torsten

AU - Reglero, V.

AU - Ullaland, K.

AU - Yang, S.

AU - Genov, G.

AU - Marisaldi, M.

AU - Mezentsev, A.

AU - Kochkin, P.

AU - Lehtinen, N.

AU - Sarria, D.

AU - Qureshi, B.H.

AU - Solberg, A.

AU - Maiorana, C.

AU - Albrechtsen, K.

AU - Budtz‐Jørgensen, C.

AU - Kuvvetli, I.

AU - Christiansen, F.

AU - Chanrion, O.

AU - Heumesser, M.

AU - Navarro‐Gonzalez, J.

AU - Connell, P.

AU - Eyles, C.

AU - Christian, H.

AU - Al‐Nussirat, S.

PY - 2019

Y1 - 2019

N2 - The Atmosphere-Space Interactions Monitor (ASIM) was launched to the International Space Station (ISS) on April 2, 2018. The ASIM payload consists of two main instruments, the Modular X- and Gamma-ray Sensor (MXGS) for imaging and spectral analysis of Terrestrial Gamma-ray Flashes (TGFs) and the Modular Multi-spectral Imaging Array (MMIA) for detection, imaging and spectral analysis of Transient Luminous Events (TLEs) and lightning. ASIM is the first space mission designed for simultaneous observations of TLEs, TGFs and optical lightning. During the first ten months of operation (June 2, 2018 to April 1, 2019) the MXGS has observed 217 TGFs. In this paper we report several unprecedented measurements and new scientific results obtained by ASIM during this period: 1) simultaneous TGF observations by Fermi Gamma-ray Burst Monitor (GBM) and ASIM MXGS revealing the very good detection capability of ASIM MXGS and showing substructures in the TGF, 2) TGFs and Elves produced during the same lightning flash and even simultaneously have been observed, 3) first imaging of TGFs giving a unique source location, 4) strong statistical support for TGFs being produced during the upward propagation of a leader just before a large current pulse heats up the channel and emits a strong optical pulse, and 5) the t50 duration of TGFs observed from space is shorter than previously reported.

AB - The Atmosphere-Space Interactions Monitor (ASIM) was launched to the International Space Station (ISS) on April 2, 2018. The ASIM payload consists of two main instruments, the Modular X- and Gamma-ray Sensor (MXGS) for imaging and spectral analysis of Terrestrial Gamma-ray Flashes (TGFs) and the Modular Multi-spectral Imaging Array (MMIA) for detection, imaging and spectral analysis of Transient Luminous Events (TLEs) and lightning. ASIM is the first space mission designed for simultaneous observations of TLEs, TGFs and optical lightning. During the first ten months of operation (June 2, 2018 to April 1, 2019) the MXGS has observed 217 TGFs. In this paper we report several unprecedented measurements and new scientific results obtained by ASIM during this period: 1) simultaneous TGF observations by Fermi Gamma-ray Burst Monitor (GBM) and ASIM MXGS revealing the very good detection capability of ASIM MXGS and showing substructures in the TGF, 2) TGFs and Elves produced during the same lightning flash and even simultaneously have been observed, 3) first imaging of TGFs giving a unique source location, 4) strong statistical support for TGFs being produced during the upward propagation of a leader just before a large current pulse heats up the channel and emits a strong optical pulse, and 5) the t50 duration of TGFs observed from space is shorter than previously reported.

U2 - 10.1029/2019jd031214

DO - 10.1029/2019jd031214

M3 - Journal article

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

ER -