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

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    Diurnal and seasonal variations of F2 layer characteristics over Irkutsk during the decrease in solar activity in 2003–2006: Observations and IRI-2001 model predictions

    Ratovsky, K.G. / Oinats, A.V. / Medvedev, A.V. | Elsevier | 2008
    medians. The comparison with the IRI-2001 model during the decrease in solar activity in 2003–2006 revealed cases of both close agreement and ...
    Keywords: Diurnal and seasonal variations , Solar activity dependence

    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 ...

    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

    Ionospheric variation at Thailand equatorial latitude station: Comparison between observations and IRI-2001 model predictions

    Wichaipanich, Noraset / Supnithi, Pornchai / Ishii, Mamoru et al. | Elsevier | 2009
    measurement data during low solar activity from January 2004 to December 2006 are analyzed based on the diurnal, seasonal variation. The results are ...
    Keywords: Solar activity

    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 activity and the solar cycle

    Schatten, K.H. | Elsevier | 2003
    Sun's polar and toroidal magnetic fields. We explain how these methods work and discuss solar activity predictions for solar cycles #23 and #24 ...

    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 ...

    Comparison of peak characteristics of F2 ionospheric layer over Tehran region at a low solar activity period with IRI-2001 and IRI-2007 models predictions

    Karami, Kh. / Ghader, S. / Raeen, A. | Elsevier | 2011
    height of F2 ionospheric layer (hmF2) over Tehran region at a low solar activity period are compared with the predictions of the International ...
    Keywords: Ionospheric modeling and prediction

    Comparison of IRI model predictions with low latitude ionospheric observations

    Bittencourt, J.A. / Chryssafidis, M. | Elsevier | 1991
    Abstract During a period of high solar activity (1979/1980), IRI ...

    Midday bottomside electron density profiles during moderate solar activity and comparison with IRI-2001

    Sethi, N.K. / Dabas, R.S. / Upadhayaya, A.K. | Elsevier | 2008
    period from January 2003 to December 2003, pertaining to moderate solar activity (MSA). Each individual profile is normalized with respect to the ...

    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

    Calculations and observations of solar particle enhancements to the radiation environment at aircraft altitudes

    Dyer, C.S. / Lei, F. / Clucas, S.N. et al. | Elsevier | 2003
    . Predictions for all events show very steep dependencies on both latitude and altitude. At high latitude and altitude (17 km) calculated increases with ...

    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

    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

    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 ...

    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 ...

    Ionospheric behavior of the F2 peak parameters foF2 and hmF2 at Hainan and comparisons with IRI model predictions

    Zhang, Man-Lian / Shi, Jian-Kui / Wang, Xiao et al. | Elsevier | 2006
    the high solar activity year 2002. During daytime hours the agreement between the hmF2 values obtained with CCIR M(30,000)F2 option and the ...

    USA-193 decay predictions using public domain trajectory data and assessment of the post-intercept orbital debris cloud

    Pardini, Carmen / Anselmo, Luciano | Elsevier | 2008
    accurate for such a low satellite (although the minimum and very stable level of solar activity helped considerably); however, data gaps of a few ...
    Keywords: Reentry predictions , Ballistic parameter and mass estimation

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

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

    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