solar minimum
Peak of Electron Density in F2 Layer Parameters Variability at Quiet Days on Solar Minimum
... DOI: 10.4236/jmp.2019.103021 308 Journal of Modern Physics use of IRI model. The study highlights insignificant relative errors on NmF2 car- ried out from the quietest days on solar minimum of phase 22 at ...
8
Patterns of GPS TEC variation over low latitude regions (African sector) during the deep solar minimum (2008 to 2009) and solar maximum (2012 to 2013) phases
... the solar minimum phases in both the African and American ...the solar activity, the maximum values were recorded during the December solstice and minimum during the June ...deep solar ...
9
In-field calibration of the Navigation Dosimetry System (NAVIDOS) during solar minimum conditions
... similarity. Thus we conclude that 1) DOSTEL is mainly sen- sitive to charged particles and that 2) the calibration function corrects for this deficiency. Figure 5 displays a comparison from the same ratios as in Figure 4 ...
5
Some anomalies of mesosphere/lower thermosphere parameters during the recent solar minimum
... Since the LF reference height changes in the course of the day, a continuous time series at some fixed height is not available and consequently GW spectra cannot be calcu- lated. However, using the method presented by ...
6
7Be atmospheric concentration at mid latitudes (40°N) during a year of solar minimum
... deep solar minimum and to calculate the relative variability of 7 Be surface concentration from maximum to mean due to the solar ...of minimum solar activity, maximum concentrations of ...
9
Possible impacts of a future grand solar minimum on climate: Stratospheric and global circulation changes
... grand solar minimum, we use the HadGEM2-CC ...year solar cycle in TSI over the 21st century, with a constant amplitude based on solar cycle 23 and a fixed long-term background (see black line ...
16
Meteor heights during the recent solar minimum
... F10.7 solar flux index in ...the solar cycle is given as a red line, and the linear trend curve is ...the minimum altitude is found in 2009 during the deep solar ...
5
Regional climate impacts of a possible future grand solar minimum
... other solar activity indices (such as the ...grand solar minimum scenario, deriving a change in ultraviolet irradiance that would be consistent with the SIM data scaling linearly with the assumed ...
8
Space weather effects on the low latitude D region ionosphere during solar minimum
... the solar flares and the geomagnetic storms (disturbance storm time ( Dst ) < − 50 nT) during December 2006 to 2008, a period during the unprecedented solar minimum of solar cycles 23 and ...
10
Control of ion loss from Mars during solar minimum
... the solar wind, the role of ionospheric heating, and the role of the crustal magnetic field with regard to ionospheric ...the solar wind interaction with ...the solar minimum and solar ...
14
Comparison of Ionosphere at Middle Latitude Zone during Solar Maximum and Solar Minimum
... between solar maximum (2012) and solar minimum (2008) by means of using three typical periods of DOY to be a representative of Sun ...in solar maximum and DOY 111-DOY 117 in solar ...
7
Three years of Sun as a star radial velocity observations on the approach to solar minimum
... of solar-type stars limit the precision of radial-velocity determinations of their planets’ masses, obstructing detection of Earth ...purpose-built solar telescope and fibre feed to the HARPS-N stellar ...
19
Evaluation of the NeQuick model performance under different geomagnetic conditions over South Africa during the ascending phase of the solar cycle (2009–2012)
... high solar activity and lower than 4 TECu for the year of solar ...different solar activity (from minimum to maximum), it was revealed that the IRI with the NeQuick topside option shown good ...
10
Evaluation of radiation scheme performance within chemistry climate models
... the solar spectrum and because of the historical focus of numerical global modeling on the troposphere where absorption of solar UV radiation by ozone plays only a very minor role, SW radiation codes in ...
27
Evaluation of the ECHAM family radiation codes performance in the representation of the solar signal
... of solar variability requires chemistry–climate models (CCMs), the main instruments which are capable of taking into ac- count many atmospheric chemical, dynamical and temper- ature ...the solar irradiance ...
8
Global sounding of F region irregularities by COSMIC during a geomagnetic storm
... However, 1TEC might be more reliable since it is based on fewer retrieval assumptions. We find a significant difference if the arithmetic mean or the median is applied to the global map of September 2013. In agreement ...
8
A new coupled middle atmosphere and thermosphere general circulation model: Studies of dynamic, energetic and photochemical coupling in the middle and upper atmosphere
... (at solar minimum) the energy is released through ion-ion and ion-neutral exothermic chemistry of constituents either created locally or transported downwards ftom ...
294
Does the worsening galactic cosmic radiation environment observed by CRaTER preclude future manned deep space exploration?
... in solar minima, three-dimensional drifts of cosmic rays become quite impor- tant [Jokipii et ...reduced solar wind pressure [McComas et ...23–24 solar minimum has allowed the termination ...
13
A statistical comparison of hot ion properties at geosynchronous orbit during intense and moderate geomagnetic storms at solar maximum and minimum
... the solar wind flows being converted into magnetic energy and stored in the ...the solar wind with a linear correlation coefficient as high as ...At solar maximum, coronal mass ejections (CMEs), of ...
16
Study of Ionospheric Slab Thickness behaviour over Rome
... 16 solar flux ...medium solar activity conditions for the mid-latitude station of Aberystwith (53ºN, 4º ...during solar minimum and for high-latitude during solar ...
11