| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3MA6S3H | |||
| Repository | sid.inpe.br/mtc-m21b/2016/08.19.18.52 (restricted access) | |||
| Last Update | 2016:08.19.18.54.06 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2016/08.19.18.52.42 | |||
| Metadata Last Update | 2018:06.04.02.41.03 (UTC) administrator | |||
| DOI | 10.1051/swsc/2016023 | |||
| ISSN | 2115-7251 | |||
| Citation Key | HajraCTDEBGS:2016:EmMoIo | |||
| Title | An empirical model of ionospheric total electron content (TEC) near the crest of the equatorial ionization anomaly (EIA)  | |||
| Year | 2016 | |||
| Month | July | |||
| Access Date | 2024, May 11 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 1672 KiB | |||
| 2. Context | ||||
| Author | 1 Hajra, Rakjumar 2 Chakraborty, Shyamal Kumar 3 Tsurutani, Bruce T. 4 DasGupta, Ashish 5 Echer, Ezequiel 6 Brum, Christiano G. M. 7 Gonzalez Alarcon, Walter Demétrio 8 Sobral, José Humberto Andrade | |||
| Resume Identifier | 1 2 3 4 5 8JMKD3MGP5W/3C9JH3D 6 7 8JMKD3MGP5W/3C9JJC4 8 8JMKD3MGP5W/3C9JHHA | |||
| Group | 1 GES-CEA-SPG-INPE-MCTI-GOV-BR 2 3 4 5 DGE-CEA-INPE-MCTI-GOV-BR 6 7 DGE-CEA-INPE-MCTI-GOV-BR 8 DAE-CEA-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Raja Peary Mohan College 3 Jet Propulsion Laboratory 4 University of Calcutta 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Arecibo Observatory/SRI International 7 Instituto Nacional de Pesquisas Espaciais (INPE) 8 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 rajkumarhajra@yahoo.co.in 2 3 4 5 eecher@dge.inpe.br 6 7 walter.alarcon@inpe.br 8 jsobral@dae.inpe.br | |||
| Journal | Journal of Space Weather and Space Climate | |||
| Volume | 6 | |||
| Pages | A29 | |||
| Secondary Mark | B5_GEOCIÊNCIAS | |||
| History (UTC) | 2016-08-19 18:54:06 :: simone -> administrator :: 2016 2016-08-27 16:08:45 :: administrator -> simone :: 2016 2016-12-21 12:04:50 :: simone -> administrator :: 2016 2018-06-04 02:41:03 :: administrator -> simone :: 2016 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | Ionosphere (equatorial) Solar activity Solar cycle Total electron content Forecasting | |||
| Abstract | We present a geomagnetic quiet time (Dst > -50 nT) empirical model of ionospheric total electron content (TEC) for the northern equatorial ionization anomaly (EIA) crest over Calcutta, India. The model is based on the 1980-1990 TEC measurements from the geostationary Engineering Test Satellite-2 (ETS-2) at the Haringhata (University of Calcutta, India: 22.58 degrees N, 88.38 degrees E geographic; 12.09 degrees N, 160.46 degrees E geomagnetic) ionospheric field station using the technique of Faraday rotation of plane polarized VHF (136.11 MHz) signals. The ground station is situated virtually underneath the northern EIA crest. The monthly mean TEC increases linearly with F-10.7 solar ionizing flux, with a significantly high correlation coefficient (r - 0.89-0.99) between the two. For the same solar flux level, the TEC values are found to be significantly different between the descending and ascending phases of the solar cycle. This ionospheric hysteresis effect depends on the local time as well as on the solar flux level. On an annual scale, TEC exhibits semiannual variations with maximum TEC values occurring during the two equinoxes and minimum at summer solstice. The semiannual variation is strongest during local noon with a summer-to-equinox variability of similar to 50-100 TEC units. The diurnal pattern of TEC is characterized by a pre-sunrise (0400-0500 LT) minimum and near-noon (1300-1400 LT) maximum. Equatorial electrodynamics is dominated by the equatorial electrojet which in turn controls the daytime TEC variation and its maximum. We combine these long-term analyses to develop an empirical model of monthly mean TEC. The model is validated using both ETS-2 measurements and recent GNSS measurements. It is found that the present model efficiently estimates the TEC values within a 1-sigma range from the observed mean values. | |||
| Area | CEA | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > An empirical model... | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > An empirical model... | |||
| Arrangement 3 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > GES > An empirical model... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | hajra_an empirical.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | urlib.net/www/2011/03.29.20.55 | |||
| Next Higher Units | 8JMKD3MGPCW/3ETL868 8JMKD3MGPCW/3EU29DP 8JMKD3MGPCW/3F2PBEE | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.45.47 5 sid.inpe.br/mtc-m21/2012/07.13.14.52.02 2 sid.inpe.br/mtc-m21/2012/07.13.15.01.50 2 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||