کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1766293 | 1020144 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Validation of B0 and B1 in the IRI 2001 model at low solar activity for Ilorin an equatorial station
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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چکیده انگلیسی
A new set of data obtained at low solar activity from Ilorin, Nigeria (geog. latitude 8.5°N, geog longitude, 4.6°E, dip 4.1°S) is used to validate the IRI 2001 model at low solar activity. The results show in general a good agreement between model and observed B0 at night but an over estimation during daytime. The overestimation is greatest during the morning period (0600LT-1000LT). The model prediction for B1 is fairly good at night and during the day. A dependence of B0 on solar zenith angle Ï is observed during the daytime. A formulation of the form B0 = A[cos(Ï)n] is therefore proposed. Values of the constants n and A were determined for the period of low solar activity for this station.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 42, Issue 4, 18 August 2008, Pages 691-694
Journal: Advances in Space Research - Volume 42, Issue 4, 18 August 2008, Pages 691-694
نویسندگان
J.O. Adeniyi, S.M. Radicella, I.A. Adimula, A.A. Willoughby, O.A. Oladipo, O. Olawepo,