Global ionosonde and GPS radio occultation sporadic-E intensity and height comparison

摘要: Abstract A multi-year global comparison between mid-latitude and equatorial sporadic-E ( E s ) height intensity derived from COSMIC GPS radio occultation (GPS-RO) data blanketing frequency (fbEs) ground-based Digisonde measurements is performed. The layer GPS-RO was estimated using the S2 scintillation index total electron content (TEC) assuming constant variable cloud thicknesses individually. crossings were limited to within 150 km 30 min of fbEs occurrences at each Digisonde. Intensities TEC with thickness method agreed more closely in terms relative error spread. path lengths also significantly larger than average length indicating that tube geometry assumptions do not apply sporadic-E. Furthermore, intensities calculated technique generally placed 2.7 5.3 MHz. Mean predictions methods are found be statistically similar mean fbEs. Both underestimated altitude events, but performed better overall. heights both show a significant difference heights, suggesting bias estimates.