Abstract
Similarity laws for streamer discharges, which state that the properties of streamers such as streamer radius, electric field, and electron density should respectively scale as N-1, N1, and N2 in different but uniform air densities N, are important relations that have provided a general understanding of the mesospheric sprite discharges based on existing knowledge of streamers in laboratory conditions. Recent modeling studies, however, show that the properties of sprite streamers in varying air density do not follow exactly or even contradict the similarity relations. We present here simulation results and related analysis of sprite streamers to provide a unified view and resolve these contradictions. Our results indicate that the properties of streamers in varying air density are determined by the physical dimensions of streamers and the reduced electric field E/N, with the varying air density N being only one of the three factors controlling the streamer properties. Key Points Air density is only one of the three factors affecting streamer dynamics Initial conditions and applied electric field are the other two factors Sprite streamers are smaller at lower altitudes due to branching
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2031-2036 |
| Number of pages | 6 |
| Journal | Geophysical Research Letters |
| Volume | 42 |
| Issue number | 6 |
| DOIs | |
| State | Published - Mar 28 2015 |
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All Science Journal Classification (ASJC) codes
- Geophysics
- Earth and Planetary Sciences(all)
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Dynamics of sprite streamers in varying air density. / Qin, Jianqi; Pasko, Victor P.
In: Geophysical Research Letters, Vol. 42, No. 6, 28.03.2015, p. 2031-2036.Research output: Contribution to journal › Article
TY - JOUR
T1 - Dynamics of sprite streamers in varying air density
AU - Qin, Jianqi
AU - Pasko, Victor P.
PY - 2015/3/28
Y1 - 2015/3/28
N2 - Similarity laws for streamer discharges, which state that the properties of streamers such as streamer radius, electric field, and electron density should respectively scale as N-1, N1, and N2 in different but uniform air densities N, are important relations that have provided a general understanding of the mesospheric sprite discharges based on existing knowledge of streamers in laboratory conditions. Recent modeling studies, however, show that the properties of sprite streamers in varying air density do not follow exactly or even contradict the similarity relations. We present here simulation results and related analysis of sprite streamers to provide a unified view and resolve these contradictions. Our results indicate that the properties of streamers in varying air density are determined by the physical dimensions of streamers and the reduced electric field E/N, with the varying air density N being only one of the three factors controlling the streamer properties. Key Points Air density is only one of the three factors affecting streamer dynamics Initial conditions and applied electric field are the other two factors Sprite streamers are smaller at lower altitudes due to branching
AB - Similarity laws for streamer discharges, which state that the properties of streamers such as streamer radius, electric field, and electron density should respectively scale as N-1, N1, and N2 in different but uniform air densities N, are important relations that have provided a general understanding of the mesospheric sprite discharges based on existing knowledge of streamers in laboratory conditions. Recent modeling studies, however, show that the properties of sprite streamers in varying air density do not follow exactly or even contradict the similarity relations. We present here simulation results and related analysis of sprite streamers to provide a unified view and resolve these contradictions. Our results indicate that the properties of streamers in varying air density are determined by the physical dimensions of streamers and the reduced electric field E/N, with the varying air density N being only one of the three factors controlling the streamer properties. Key Points Air density is only one of the three factors affecting streamer dynamics Initial conditions and applied electric field are the other two factors Sprite streamers are smaller at lower altitudes due to branching
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U2 - 10.1002/2015GL063269
DO - 10.1002/2015GL063269
M3 - Article
VL - 42
SP - 2031
EP - 2036
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 6
ER -