Climatological study of the ion temperature in the ionosphere as recorded by Millstone Hill incoherent scatter radar and comparison with the IRI model
نویسندگان
چکیده
Ion temperature data recorded by Millstone Hill incoherent scatter radar (42.61° N, 288.51° E) over four full solar cycles (from 1970 to 2018) are analyzed depict its climatological behavior in the range of altitudes between 100 and 550 km. The ion dependencies on altitude, local time, month year, activity level studied through a analysis based binning boxplot representation statistical values. Binned observations compared with International Reference Ionosphere (IRI) modeled values (IRI-2016 version). This comparison reveals several shortcomings IRI modeling at ionosphere altitudes, particular for altitudinal, diurnal, seasonal, description. main finding this study is that overall overestimation can be probably ascribed long-term cooling. Moreover, suggests model needs implement seasonal dependence, introduce more refined diurnal description allow multiple maxima seen observations. anchor point 430 km investigated detail show how also better altitude dependence desirable purposes. Some hints clues finally given improve model.
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15 صفحه اولA statistical study of ionospheric profile parameters derived from Millstone Hill incoherent scatter radar measurements
[1] Diurnal, seasonal, and solar activity variations of the bottomside electron density profile parameters B0 and B1, representing the F2 layer thickness and shape, are studied using a large incoherent scatter radar dataset for Millstone Hill covering the period 1976–2002. These results are compared with the latest IRI model. Our statistical study is characterized by morning and afternoon falls...
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15 صفحه اولLong-term temperature trends in the ionosphere above Millstone Hill
[1] Increasing concentrations of greenhouse gases are expected on theoretical grounds to lead to a cooling of the upper atmosphere. Due to the close thermal coupling of the neutral and ionized components of the upper atmosphere the effects of this cooling are also expected to be seen in the ionospheric ion temperature. Long-term satellite observations of neutral density show a trend consistent ...
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ژورنال
عنوان ژورنال: Advances in Space Research
سال: 2021
ISSN: ['0273-1177', '1879-1948']
DOI: https://doi.org/10.1016/j.asr.2020.10.025