Inversion of the F2 layer critical frequency with the solar zenith angle
Normalization of the F 2 layer critical frequency is put forward with a model related to the solar zenith angle at the time of observation and its local noon value. The method implies a physically based replacement of variable representing one of the key controlling parameters of the modern empirica...
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| Veröffentlicht in: | Geomagnetism and Aeronomy 2009-10, Vol.49 (5), p.591-598 |
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| container_title | Geomagnetism and Aeronomy |
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| creator | Gulyaeva, T. L. Gulyaev, R. A. |
| description | Normalization of the
F
2 layer critical frequency is put forward with a model related to the solar zenith angle at the time of observation and its local noon value. The method implies a physically based replacement of variable representing one of the key controlling parameters of the modern empirical ionospheric models. The inversion of critical frequency is analyzed with the hourly values of
foF
2 of seven ionospheric stations for 2000–2006 (half the solar activity cycle). The normalized critical frequency
fnF
2 reveals an improved correlation between the data of different stations and improved inter-seasonal correlation of the data of a particular station as compared with the initial
foF
2 values. A correlation radius in summer is two times greater for normalized critical frequency than for observations. The analytical model of expansion of the diurnal variation of critical frequency with four hourly values at 00, 06, 12 and 18 h of local time exhibits improved statistical features of normalized critical frequency as compared with observed critical frequency. |
| doi_str_mv | 10.1134/S0016793209050065 |
| format | Article |
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F
2 layer critical frequency is put forward with a model related to the solar zenith angle at the time of observation and its local noon value. The method implies a physically based replacement of variable representing one of the key controlling parameters of the modern empirical ionospheric models. The inversion of critical frequency is analyzed with the hourly values of
foF
2 of seven ionospheric stations for 2000–2006 (half the solar activity cycle). The normalized critical frequency
fnF
2 reveals an improved correlation between the data of different stations and improved inter-seasonal correlation of the data of a particular station as compared with the initial
foF
2 values. A correlation radius in summer is two times greater for normalized critical frequency than for observations. The analytical model of expansion of the diurnal variation of critical frequency with four hourly values at 00, 06, 12 and 18 h of local time exhibits improved statistical features of normalized critical frequency as compared with observed critical frequency.</description><identifier>ISSN: 0016-7932</identifier><identifier>EISSN: 1555-645X</identifier><identifier>EISSN: 0016-7940</identifier><identifier>DOI: 10.1134/S0016793209050065</identifier><language>eng</language><publisher>Dordrecht: SP MAIK Nauka/Interperiodica</publisher><subject>Aeronomy ; Diurnal variations ; Earth and Environmental Science ; Earth Sciences ; Frequencies ; Geophysics/Geodesy ; Solar activity</subject><ispartof>Geomagnetism and Aeronomy, 2009-10, Vol.49 (5), p.591-598</ispartof><rights>Pleiades Publishing, Ltd. 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c346t-60681d6aa7c04e883ddf81c7395bbe7141b4df896a27ebaa4896bde348f2a153</citedby><cites>FETCH-LOGICAL-c346t-60681d6aa7c04e883ddf81c7395bbe7141b4df896a27ebaa4896bde348f2a153</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S0016793209050065$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S0016793209050065$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Gulyaeva, T. L.</creatorcontrib><creatorcontrib>Gulyaev, R. A.</creatorcontrib><title>Inversion of the F2 layer critical frequency with the solar zenith angle</title><title>Geomagnetism and Aeronomy</title><addtitle>Geomagn. Aeron</addtitle><description>Normalization of the
F
2 layer critical frequency is put forward with a model related to the solar zenith angle at the time of observation and its local noon value. The method implies a physically based replacement of variable representing one of the key controlling parameters of the modern empirical ionospheric models. The inversion of critical frequency is analyzed with the hourly values of
foF
2 of seven ionospheric stations for 2000–2006 (half the solar activity cycle). The normalized critical frequency
fnF
2 reveals an improved correlation between the data of different stations and improved inter-seasonal correlation of the data of a particular station as compared with the initial
foF
2 values. A correlation radius in summer is two times greater for normalized critical frequency than for observations. The analytical model of expansion of the diurnal variation of critical frequency with four hourly values at 00, 06, 12 and 18 h of local time exhibits improved statistical features of normalized critical frequency as compared with observed critical frequency.</description><subject>Aeronomy</subject><subject>Diurnal variations</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Frequencies</subject><subject>Geophysics/Geodesy</subject><subject>Solar activity</subject><issn>0016-7932</issn><issn>1555-645X</issn><issn>0016-7940</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kE9LAzEQxYMoWKsfwFvw4G01_5M9SlFbKHiwB29LNjvbbtlma7JV6qc3awVB8TTDm997PAahS0puKOXi9pkQqnTOGcmJJETJIzSiUspMCflyjEbDORvup-gsxjUhnEhJR2g6828QYtN53NW4XwF-YLi1ewjYhaZvnG1xHeB1B97t8XvTr76g2LU24A_wg2D9soVzdFLbNsLF9xyjxcP9YjLN5k-Ps8ndPHNcqD5TRBlaKWu1IwKM4VVVG-o0z2VZgqaCliIpubJMQ2mtSGtZARemZpZKPkbXh9ht6FKp2BebJjpoW-uh28WC0RQhCU3g1S9w3e2CT9UKo5lhRkudIHqAXOhiDFAX29BsbNgXlBTDX4s_f00edvDExPolhJ_g_02foK942g</recordid><startdate>20091001</startdate><enddate>20091001</enddate><creator>Gulyaeva, T. L.</creator><creator>Gulyaev, R. A.</creator><general>SP MAIK Nauka/Interperiodica</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>20091001</creationdate><title>Inversion of the F2 layer critical frequency with the solar zenith angle</title><author>Gulyaeva, T. L. ; Gulyaev, R. 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F
2 layer critical frequency is put forward with a model related to the solar zenith angle at the time of observation and its local noon value. The method implies a physically based replacement of variable representing one of the key controlling parameters of the modern empirical ionospheric models. The inversion of critical frequency is analyzed with the hourly values of
foF
2 of seven ionospheric stations for 2000–2006 (half the solar activity cycle). The normalized critical frequency
fnF
2 reveals an improved correlation between the data of different stations and improved inter-seasonal correlation of the data of a particular station as compared with the initial
foF
2 values. A correlation radius in summer is two times greater for normalized critical frequency than for observations. The analytical model of expansion of the diurnal variation of critical frequency with four hourly values at 00, 06, 12 and 18 h of local time exhibits improved statistical features of normalized critical frequency as compared with observed critical frequency.</abstract><cop>Dordrecht</cop><pub>SP MAIK Nauka/Interperiodica</pub><doi>10.1134/S0016793209050065</doi><tpages>8</tpages></addata></record> |
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| subjects | Aeronomy Diurnal variations Earth and Environmental Science Earth Sciences Frequencies Geophysics/Geodesy Solar activity |
| title | Inversion of the F2 layer critical frequency with the solar zenith angle |
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