Synonyms were used for: Solar Activity
Search without synonyms: title: Solar Activity Observations and Predictions

1–20 of 82 hits
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    Characterize the long-term ionospheric response to the changes in solar activity at low-latitude stations of the East African Sector

    Woldemariam, Shumet Workie / Gogie, Tsegaye Kassa | Elsevier | 2023
    We examine the long-term ionospheric response to solar conditions from 2009–2019 ...
    Keywords: Solar-activity , Solar-cycle-24

    Machine learning based approach for modeling and forecasting of GPS–TEC during diverse solar phase periods

    Yarrakula, Mallika / N, Prabakaran / Dabbakuti, JRK Kumar | Elsevier | 2023
    the Global Positioning System (GPS)–derived TEC observations of Bangalore station (Geog. Lat. 13.02° N and Geog. Long. 77.57° E) during the ...
    Keywords: Solar activity

    Evaluation of the performance of F-layer peak height models used in IRI-2016 over the Indian equatorial and low latitudes

    Venkatesh, K. / Pallamraju, D. / Dalsania, Kelvy P. et al. | Elsevier | 2023
    Ahmedabad (23.0 °N, 72.5 °E) along with GPS observations over Colombo (6.8 °N, 79.8 °E) and Ahmedabad during a high solar activity year 2014 are ...

    A model of foreground emission in UV using GALEX deep observations

    Narayanan, Nimmi / Menon, Shivashankar S. / N.V., Sujatha | Elsevier | 2022
    model of airglow emission, derived from GALEX deep observations, as a function of 10.7 cm Solar flux and Sun angle. We obtained the model by ...
    Keywords: Solar activity , Solar cycle , Astronomical space missions and instrumentation

    Quiet-time seasonal behaviour of the ionosphere measured by the Ionosphere PhotoMeter (IPM) on the Chinese meteorological satellite FY-3D compared with the IRI2016 model predictions

    Jiang, Fang / Mao, Tian / Wang, Yun-Gang et al. | Elsevier | 2022
    -night ionosphere at approximately two o’clock local time of a low-solar-activity year and discrepancies between Ionosphere PhotoMeter (IPM ...

    Global mapping of total electron content from GNSS observations for updating IRI-Plas model

    Shubin, V.N. / Gulyaeva, T.L. | Elsevier | 2021
    . Spherical Harmonic latitude and longitude functions with associated numerical coefficients ...

    Study of the upper transition height using ISR observations and IRI predictions over Arecibo

    Vaishnav, Rajesh / Jin, Yuyan / Mostafa, Md. Golam et al. | Elsevier | 2020
    predictions using the TBT15 model ion composition option. During low and moderate solar activity conditions, the TBT15 model overestimates about 5–10 ...

    Assessment of IRI-2016 hmF2 model predictions with COSMIC observations over the African region

    Moses, Mefe / Bilitza, Dieter / Panda, Sampad Kumar et al. | Elsevier | 2020
    during quiet geomagnetic conditions under both low and high solar activity periods. However, the average performance declines during disturbed ...

    Solar forcing on the ionosphere: Global model of the F2 layer peak parameters driven by re-calibrated sunspot numbers

    Shubin, V.N. / Gulyaeva, T.L. | Elsevier | 2020
    compared with foF2, hmF2 and TEC observations and other models for low, medium and high solar activity demonstrating improved accuracy by 20–50% as ...
    Keywords: IRI-Plas international reference ionosphere and plasmasphere

    A regional model for the prediction of M(3000)F2 over East Asia

    Wang, Jian / Feng, Feng / Bai, Hong-mei et al. | Elsevier | 2020
    activity parameters of sunspot number and the 10.7-cm solar radio flux are together introduced into temporal reconstruction. (2) Both the ...

    foF2 variability at a southern low-latitude station and the performance of IRI-2016 model during ascending phase of solar cycle-24

    Rao, S.S. / Chakraborty, Monti / Pandey, R. et al. | Elsevier | 2019
    Semiannual, seasonal, and solar cycle variations in foF2 are studied ...

    Analysis of sea level changes in the Caspian Sea related to Cosmo-geophysical processes based on satellite and terrestrial data

    Free access
    Vladimir Kaftan / Boris Komitov / Sergey Lebedev | DOAJ | 2018
    solar activity characteristics, magnetic field data, and length of day are presented. Spectra of the indicated processes were investigated and ...

    Diurnal variations of the ionospheric electron density height profiles over Irkutsk: Comparison of the incoherent scatter radar measurements, GSM TIP simulations and IRI predictions

    Zherebtsov, G.A. / Ratovsky, K.G. / Klimenko, M.V. et al. | Elsevier | 2016
    for 4 four seasons (winter, spring, summer, autumn) and for two solar activity levels (low and moderate). Considering these electron density ...

    Evaluation of IRI predicted characteristics of ionospheric F1 layer by ionosonde observations in Nicosia, Cyprus

    Mostafa, Md Golam / Haralambous, Haris / Oikonomou, Christina | Elsevier | 2016

    Solar cycle variation of ionospheric parameters over the low latitude station Hainan, China, during 2002–2012 and its comparison with IRI-2012 model

    Wang, G.J. / Shi, J.K. / Wang, Z. et al. | Elsevier | 2016
    diurnal, seasonal, annual variations and solar activity dependences of the ionospheric peak parameters (foF2, hmF2, and Chapman scale height Hm ...

    Variability of the bottomside B0 and B1 parameters of ionospheric electron density profile over Cyprus and comparison with IRI-2012 model

    Panda, Sampad Kumar / Haralambous, Haris | Elsevier | 2016
    under low and high solar activity conditions. Observations show significant day-to-day variations in their magnitudes manifesting relatively ...
    Keywords: B0 and B1 parameters

    Ionospheric electron density perturbations during the 7–10 March 2012 geomagnetic storm period

    Belehaki, Anna / Kutiev, Ivan / Marinov, Pencho et al. | Elsevier | 2016
    identify separately each of the sources of the observed perturbations, i.e. auroral electrojet activity and LSTIDs, super-fountain and SAPS ...

    Comparison of GPS-TEC observations over Addis Ababa with IRI-2012 model predictions during 2010–2013

    Akala, A.O. / Somoye, E.O. / Adewale, A.O. et al. | Elsevier | 2015
    . TEC increases with solar activity, and of all the three options of IRI-2012, NeQuick was most accurate. ...
    Keywords: Solar activity

    Solar cycle variations of magnetopause locations

    Němeček, Z. / Šafránková, J. / Lopez, R.E. et al. | Elsevier | 2015
    magnetopause model of Shue et al. (1997) and the sources of differences between observations and model predictions are analyzed. This analysis reveals ...
    Keywords: Solar cycle , Solar wind velocity

    Study of Ionospheric TEC from GPS observations and comparisons with IRI and SPIM model predictions in the low latitude anomaly Indian subcontinental region

    Panda, S.K. / Gedam, S.S. / Rajaram, G. | Elsevier | 2014
    . GPS-TECs are compared with global ionosphere maps (IGS-GIM), IRI, and SPIM models ...