Balloon measurements of the vertical ionization profile over southern Israel and comparison to mid-latitude observations

Roy Yaniv, Yoav Yair, Colin Price, Kerianne Nicoll, Giles Harrison, Anton Artamonov, Ilya Usoskin

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Abstract

Airborne measurements using meteorological balloons were conducted for the first time from southern Israel (geographic 30°35’N, 34°45’E geomagnetic 27°6’N 112°23’E) for measuring the vertical ionization profile during solar cycle 24. The results show the differences (increase of ~30%) in count rates as we proceed from solar maximum toward solar minimum. The observed altitude of maximum ionization (the Regener-Pfotzer maximum) was between 17–20 km, and it agrees well with results from other simultaneous measurements
conducted at different latitudes (Reading, UK and Zaragoza-Barcelona, Spain). When compared with predictions of an analytical model, we find a highly significant correlation (R2=0.97) between our observations and the computed ionization profiles. The difference in count rates can be attributed to the height of the tropopause due to the model using a US standard atmosphere that differs from the measured atmospheric parameters above Israel.
Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalJournal of Atmospheric and Solar-Terrestrial Physics
Volume149
Early online date8 Oct 2016
DOIs
Publication statusPublished - Nov 2016

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