Research output: Contribution to journal › Article › peer-review
Natural Sources of Ionization and Their Impact on Atmospheric Electricity. / Golubenko, K.; Rozanov, E.; Mironova, I.; Karagodin, A.; Usoskin, I.
In: Geophysical Research Letters, Vol. 47, No. 12, e2020GL088619, 28.06.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Natural Sources of Ionization and Their Impact on Atmospheric Electricity
AU - Golubenko, K.
AU - Rozanov, E.
AU - Mironova, I.
AU - Karagodin, A.
AU - Usoskin, I.
PY - 2020/6/28
Y1 - 2020/6/28
N2 - We present a study of atmospheric electricity using the chemistry-climate model SOCOL considering ionization by solar energetic particles during an extreme solar proton event (SPE), galactic cosmic rays (GCR), and terrestrial radon (Rn-222). We calculate the global distribution of the atmospheric conductivity and fair-weather downward current density (Jz) using atmospheric ionization rates from all sources. We found that Jz is enhanced (by more than 3.5 pA/m2) in radon source and polar regions. Contribution of Rn-222 is essential at middle and low latitudes/altitudes where GCR-induced air conductivity is reduced. The model results are in good agreement with the available observations. We also studied the effects of an extreme SPE, corresponding to the 774 AD event, on the atmospheric electricity and found that it would lead to a large increase of Jz on a global scale. The magnitude of the effects depends on location and can exceed background value more than 30 times over the high latitudes (a conservative upper bound). Such an assessment has been performed for the first time.
AB - We present a study of atmospheric electricity using the chemistry-climate model SOCOL considering ionization by solar energetic particles during an extreme solar proton event (SPE), galactic cosmic rays (GCR), and terrestrial radon (Rn-222). We calculate the global distribution of the atmospheric conductivity and fair-weather downward current density (Jz) using atmospheric ionization rates from all sources. We found that Jz is enhanced (by more than 3.5 pA/m2) in radon source and polar regions. Contribution of Rn-222 is essential at middle and low latitudes/altitudes where GCR-induced air conductivity is reduced. The model results are in good agreement with the available observations. We also studied the effects of an extreme SPE, corresponding to the 774 AD event, on the atmospheric electricity and found that it would lead to a large increase of Jz on a global scale. The magnitude of the effects depends on location and can exceed background value more than 30 times over the high latitudes (a conservative upper bound). Such an assessment has been performed for the first time.
KW - atmospheric electricity
KW - cosmic rays
KW - global electric circuit
KW - radon-222
KW - solar energetic particles
KW - EVENTS
KW - SOLAR MODULATION
KW - MODEL
KW - RN-222
KW - CLIMATE
KW - CIRCUIT
UR - http://www.scopus.com/inward/record.url?scp=85086802636&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/14f74555-9631-3fbc-89f5-528f8913c880/
U2 - 10.1029/2020GL088619
DO - 10.1029/2020GL088619
M3 - Article
AN - SCOPUS:85086802636
VL - 47
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 12
M1 - e2020GL088619
ER -
ID: 54006050