Seasonal variations of temperature and emission intensities of mesopause on variotion of solar activity

Ammosova, A. M.; Аммосов, Петр

doi:10.1117/12.2008792

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A wide scatter of literatures have investigated the solar activity influence on upper atmosphere temperature [Remsberg, 2009;She et al, 2009;Offermann et al, 2010;Ammosova and Ammosov, 2012;Savigny et al, 2012;Ammosov et al, 2014;Forbes et al, 2014;Oindrila and Sridharan, 2014;Ramesh et al, 2015]. Beig et al [2008] and Beig [2011] provided a compilation of the existing studies quantifying the sensitivity of middle atmospheric temperatures to solar activity in terms of the 11 year solar activity cycle; the majority estimations lie in the range from 0 to 10 K/100 sfu in mesopause region.…”

Section: Discussionmentioning

confidence: 99%

“…The 10.7 cm solar radio flux (F 10.7 ), which varies with solar cycle, is often taken as an index of solar activity [e.g., Gray et al, 2010;Beig, 2011;Ammosova and Ammosov, 2012;Ammosov et al, 2014;Ramesh et al, 2015]. The daily data of F 10.7 adjusted for an arbitrary unit (1 AU) is used to analyze the response of T-CPM to solar activity.…”

Section: Data Sourcementioning

confidence: 99%

“…Offermann et al [] analyzed the response of temperature to solar activity about ~87 km on the basis of OH airglow measurements obtained during the period of 1988–2008 over Wuppertal station (51°N, 7°E). Ammosova and Ammosov [] investigated that temperature data on the basis of spectral observations of the mesopause emissions on Maymaga station (63°N, 129°E) during the years 2000–2011 seasonal dependence of the response received radiation temperatures of OH (6,2) (height of the radiation 87 km) from the solar activity. Savigny et al [] studied the sensitivity of equatorial mesopause temperatures to the 27 day solar forcing using nighttime observations of OH (3–1) rotational temperatures with SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY on Envisat.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The response of the temperature of cold‐point mesopause to solar activity based on SABER data set

et al. 2016

View full text Add to dashboard Cite

The thermal structure and energy balance of upper atmosphere are dominated by solar activity. The response of cold‐point mesopause (CPM) to solar activity is an important form. This article presents the response of the temperature of CPM (T‐CPM) to solar activity using 14 year Sounding of the Atmosphere using Broadband Emission Radiometry data series over 80°S–80°N regions. These regions are divided into 16 latitude zones with 10° interval, and the spatial areas of 80°S–80°N, 180°W–180°E are divided into 96 lattices with 10°(latitude) × 60°(longitude) grid. The annual‐mean values of T‐CPM and F10.7 are calculated. The least squares regression method and correlation analysis are applied to these annual‐mean series. First, the results show that the global T‐CPM is significantly correlated to solar activity at the 0.05 level of significance with correlation coefficient of 0.90. The global solar response of T‐CPM is 4.89 ± 0.67 K/100 solar flux unit. Then, for each latitude zone, the solar response of T‐CPM and its fluctuation are obtained. The solar response of T‐CPM becomes stronger with increasing latitude. The fluctuation ranges of solar response at middle‐latitude regions are smaller than those of the equator and high‐latitude regions, and the global distribution takes on W shape. The corelationship analysis shows that the T‐CPM is significantly correlated to solar activity at the 0.05 level of significance for each latitude zone. The correlation coefficients at middle‐latitude regions are higher than those of the equator and high‐latitude regions, and the global distribution takes on M shape. At last, for each grid cell, the response of T‐CPM to solar activity and their correlation coefficient are presented.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Data Sourcementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The response of the temperature of cold‐point mesopause to solar activity based on SABER data set

et al. 2016

View full text Add to dashboard Cite

show abstract

Seasonal variations of mesopause temperature and the amplitude of the VLF signals of the Novosibirsk radio station during 2009-2016

et al. 2017

View full text Add to dashboard Cite

Abstract. Dynamics of seasonal variations of the amplitude of the VLF radio signal received in Yakutsk from the navigation station near Novosibirsk and the P-branches of the OH band (6-2) radiation intensity in the wavelength range 835 -853 nm are considered. The radiation variations give information about mesopause region measured at the Maimaga station (130 km from Yakutsk). The observation from 2009 to 2016 covers period with minimum and maximum solar activity. The mesopause temperature and the VLF signal increase with increasing solar flux F10.7 in winter. The mesopause temperature seasonal variations and the VLF signal strength for the Novosibirsk-Yakutsk path are regularly inverted from year to year. By decade data averaging the VLF radio signal strength dependence on the temperature of the atmosphere at the OH excitation height can be expressed by a linear function. The coefficient of determination: R 2 = 0.59, the anticorrelation coefficient: r10 = -0.77. The variations of the VLF radio noise and the radio station signal for the eightyear interval are similar to solar activity (F10.7 index). The signal level of the radio station and radio noise registered in the winter is more sensitive to variations of F10.7 index in 24th solar cycle activity.

show abstract

Seasonal variations of temperature and emission intensities of mesopause on variotion of solar activity

Cited by 2 publications

References 0 publications

The response of the temperature of cold‐point mesopause to solar activity based on SABER data set

The response of the temperature of cold‐point mesopause to solar activity based on SABER data set

Seasonal variations of mesopause temperature and the amplitude of the VLF signals of the Novosibirsk radio station during 2009-2016

Contact Info

Product

Resources

About