The bottomside parameters <i>B0</i>, <i>B1</i> obtained from incoherent scatter measurements during a solar maximum and their comparisons with the IRI-2001 model
High resolution electron density profiles (<i>Ne</i>) measured with the Arecibo (18.4 N, 66.7 W), Incoherent Scatter radar (I. S.) are used to obtain the bottomside shape parameters <i>B0</i>, <i>B1</i> for a solar maximum period (1989–90). Median values o...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2002-06-01
|
| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/20/817/2002/angeo-20-817-2002.pdf |
| Summary: | High resolution electron
density profiles (<i>Ne</i>) measured with the Arecibo (18.4 N, 66.7 W),
Incoherent Scatter radar (I. S.) are used to obtain the bottomside shape
parameters <i>B0</i>, <i>B1</i> for a solar maximum period (1989–90). Median
values of these parameters are compared with those obtained from the IRI-2001
model. It is observed that during summer, the IRI values agree fairly well with
the Arecibo values, though the numbers are somewhat larger during the daytime.
Discrepancies occur during winter and equinox, when the IRI underestimates <i>B0</i>
for the local times from about 12:00 LT to about 20:00 LT. Furthermore, the IRI
model tends to generally overestimate <i>B1</i> at all local times. At Arecibo,
<i>B0</i> increases by about 50%, and <i>B1</i> decreases by about 30% from
solar minimum to solar maximum.<br><br><b>Key words. </b>Ionosphere (equational
ionosphere; modeling and forecasting) |
|---|---|
| ISSN: | 0992-7689 1432-0576 |