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Статті в журналах з теми "Solar variations"
Solanki, S. K., M. Fligge, and Y. C. Unruh. "Variations of the Solar Spectral Irradiance." Symposium - International Astronomical Union 203 (2001): 66–77. http://dx.doi.org/10.1017/s0074180900218809.
Повний текст джерелаWillson, Richard C., and H. S. Hudson. "Solar luminosity variations in solar cycle 21." Nature 332, no. 6167 (April 1988): 810–12. http://dx.doi.org/10.1038/332810a0.
Повний текст джерелаSIMON, Paul C., and W. Kent TOBISKA. "Solar EUV Irradiance Variations." Journal of geomagnetism and geoelectricity 43, Supplement2 (1991): 823–33. http://dx.doi.org/10.5636/jgg.43.supplement2_823.
Повний текст джерелаBruls, J. H. M. J., and S. K. Solanki. "Apparent solar radius variations." Astronomy & Astrophysics 427, no. 2 (October 28, 2004): 735–43. http://dx.doi.org/10.1051/0004-6361:20041311.
Повний текст джерелаKuhn, J. R., and K. G. Librecht. "Nonfacular solar luminosity variations." Astrophysical Journal 381 (November 1991): L35. http://dx.doi.org/10.1086/186190.
Повний текст джерелаGAVRYUSEV, V., and E. GAVRYUSEVA. "Solar Neutrino Flux Variations." Annals of the New York Academy of Sciences 647, no. 1 Texas/ESO-Cer (December 1991): 483–94. http://dx.doi.org/10.1111/j.1749-6632.1991.tb32198.x.
Повний текст джерелаPap, J. M., and C. Fröhlich. "Total solar irradiance variations." Journal of Atmospheric and Solar-Terrestrial Physics 61, no. 1-2 (January 1999): 15–24. http://dx.doi.org/10.1016/s1364-6826(98)00112-6.
Повний текст джерелаSpruit, H. C. "Solar Irradiance Variations: Theory." Symposium - International Astronomical Union 185 (1998): 103–9. http://dx.doi.org/10.1017/s0074180900238369.
Повний текст джерелаFoukal, Peter V. "Solar radiative output variations." Eos, Transactions American Geophysical Union 69, no. 47 (1988): 1598. http://dx.doi.org/10.1029/88eo01201.
Повний текст джерелаReames, D. V. "Solar energetic particle variations." Advances in Space Research 34, no. 2 (January 2004): 381–90. http://dx.doi.org/10.1016/j.asr.2003.02.046.
Повний текст джерелаДисертації з теми "Solar variations"
Walker, Catherine C. "Variations of solar wind parameters over a solar cycle : expectations for NASA's Solar TErrestrial RElations Observatory (STEREO) mission /." Connect to online version, 2007. http://ada.mtholyoke.edu/setr/websrc/pdfs/www/2007/226.pdf.
Повний текст джерелаJonson, Martin. "On density and pressure variations in the solar wind plasma." Thesis, KTH, Rymd- och plasmafysik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91825.
Повний текст джерелаSharma, Pratibha. "Modeling, Optimization, and Characterization of High Concentration Photovoltaic Systems Using Multijunction Solar Cells." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/35917.
Повний текст джерелаJacobi, Christoph, Norbert Jakowski, Gerhard Schmidtke, and Thomas N. Woods. "Delayed response of the global total electron content to solar EUV variations." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212283.
Повний текст джерелаHood, L. L., and B. E. Soukharev. "Solar induced variations of odd nitrogen: Multiple regression analysis of UARS HALOE data." AMER GEOPHYSICAL UNION, 2006. http://hdl.handle.net/10150/623348.
Повний текст джерелаOrtiz, Carbonell Ada Natalia. "Solar Irradiance Variations Induced by Faculae and Small Magnetic Elements in the Photosphere." Doctoral thesis, Universitat de Barcelona, 2003. http://hdl.handle.net/10803/733.
Повний текст джерелаIrradiance variations produced on the solar rotation time-scale are due to the passage of active regions across the solar disk. However, the origin of variations on the solar cycle time-scale is under debate. One of the most controversial aspects is the long-term contribution of the small magnetic elements conforming faculae and the network. Their identification and contrast measurement is difficult and, consequently, their contrast center-to-limb variation (CLV) remains poorly defined in spite of the fact that its knowledge is essential to determine their contribution to variability.
In this work we have studied the contribution of small photospheric magnetic elements (those with a positive contribution to variability), both on short, i.e. solar rotation, and long, i.e. solar cycle, time-scales. By analyzing the evolution of an isolated active region (NOAA AR 7978) during several Carrington rotations, we have evaluated the variations in luminosity induced by this facular region during the 1996 minimum of activity. Simultaneous photometric and magnetic data from the MDI instrument have been combined in order to study the contrast of small scale magnetic features and its dependence both on position and magnetic field, as well as its evolution along the rising phase of solar cycle 23.
The study of the solar variability has required reduction and analysis of the employed MDI and VIRGO data. These data had to be converted from level 0 (raw data) to level 2 (scientifically useful data), since solar variations were hidden by instrumental effects. We developed original algorithms to correct instrument-related effects from the data, such as filter degradation and the variation of the limb darkening with distance. The determination of the contrast of magnetic features also required the development of an algorithm in order to identify the surface distribution of those small features present over the solar disk.
By analyzing irradiance variations induced by the small magnetic features that emerge into the solar photosphere we have concluded that:
· active region faculae and the magnetic network present very different contrast CLV's, therefore, their contributions to irradiance variability are distinct; as a consequence, both contributions need to be taken into account separately when reconstructing variations of the solar irradiance.
· the functional dependence on position and magnetic signal of the facular contrast is time independent; this suggests that the physical properties of the underlying flux tubes do not vary with time.
· network elements are bright over the whole solar disk and have proved to be the dominant population along the solar cycle; this implies that their contribution to long-term irradiance variations is significant and needs to be taken into account.
Hood, L. L., and S. Zhou. "Stratospheric effects of 27-day solar ultraviolet variations: The column ozone response and comparisons of solar cycles 21 and 22." AMER GEOPHYSICAL UNION, 1999. http://hdl.handle.net/10150/624008.
Повний текст джерелаHood, L. L. "Lagged response of tropical tropospheric temperature to solar ultraviolet variations on intraseasonal time scales." AMER GEOPHYSICAL UNION, 2016. http://hdl.handle.net/10150/623304.
Повний текст джерелаMontenegro, Cristian Fernando Torres. "Modelling of utility-scale PV systems and effects of solar irradiance variations on voltage levels." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-24032017-132931/.
Повний текст джерелаEste trabalho apresenta um modelo dinâmico de sistemas fotovoltaicos de grande escala. O modelo é baseado em uma topologia de conversor centralizado, que usa um conversor de fonte de tensão (VSC) para facilitar a troca de energia entre os geradores fotovoltaicos e a rede elétrica. O sistema de controle relacionado regula a energia ativa e reativa injetada pelo sistema fotovoltaico, com base em uma estratégia de controle de corrente. Além disso, o modelo inclui um sistema de rastreamento de ponto de potência máxima (MPPT), implementado com o método da condutância incremental. O dimensionamento do modelo é apresentado, bem como vários casos de simulação para validar o seu desempenho. Posteriormente, o modelo foi utilizado para analisar o efeito das variações na radiação solar sobre uma rede de teste com uma elevada penetração de geração fotovoltaica. Os resultados mostraram que sem uma adequada compensação de energia reativa, as variações na radiação solar podem causar flutuações de tensão fora dos limites permitidos. Assim, a fim de mitigar estas flutuações, estratégias de controle local foram implementadas para permitir a troca de potência reativa entre os sistemas fotovoltaicos e a rede. As simulações mostraram que as estratégias propostas podem mitigar as flutuações de tensão no ponto de acoplamento comum, melhorando a regulação de tensão na rede.
Austin, J., L. L. Hood, and B. E. Soukharev. "Solar cycle variations of stratospheric ozone and temperature in simulations of a coupled chemistry-climate model." COPERNICUS, 2007. http://hdl.handle.net/10150/623329.
Повний текст джерелаКниги з теми "Solar variations"
Kärner, Olavi. Effective cloud cover variations. Hampton, Va., USA: A. Deepak Pub., 1993.
Знайти повний текст джерелаT, DeLand M., Hillsenrath E, and United States. National Aeronautics and Space Administration., eds. NOAA-11 SBUV/2 measurements of solar UV variations. [Washington, DC: National Aeronautics and Space Administration, 1995.
Знайти повний текст джерелаT, DeLand M., Hillsenrath E, and United States. National Aeronautics and Space Administration., eds. NOAA-11 SBUV/2 measurements of solar UV variations. [Washington, DC: National Aeronautics and Space Administration, 1995.
Знайти повний текст джерелаT, DeLand M., Hillsenrath E, and United States. National Aeronautics and Space Administration., eds. NOAA-11 SBUV/2 measurements of solar UV variations. [Washington, DC: National Aeronautics and Space Administration, 1995.
Знайти повний текст джерела1941-, Stephenson F. Richard, and Wolfendale A. W, eds. Secular solar and geomagnetic variations in the last 10,000 years. Dordrecht: Kluwer Academic Publishers, 1988.
Знайти повний текст джерелаHeber, Bernd, Jószef Kóta, and R. von Steiger. Cosmic rays in the heliosphere: Temporal and spatial variations. Edited by International Space Science Institute. New York: Springer, 2014.
Знайти повний текст джерелаStephenson, F. R., and A. W. Wolfendale, eds. Secular Solar and Geomagnetic Variations in the Last 10,000 Years. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3011-7.
Повний текст джерелаH, Hathaway David, Reichmann Edwin J, and George C. Marshall Space Flight Center., eds. On determining the rise, size, and duration classes of a sunspot cycle. Marshall Space Flight Center, Ala: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаWilson, Robert M. On determining the rise, size, and duration classes of a sunspot cycle. Washington, D.C: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаH, Hathaway David, Reichmann Edwin J, and George C. Marshall Space Flight Center., eds. On determining the rise, size, and duration classes of a sunspot cycle. Marshall Space Flight Center, Ala: National Aeronautics and Space Administration, 1996.
Знайти повний текст джерелаЧастини книг з теми "Solar variations"
Willson, R. C. "Solar Irradiance Variations." In The Many Faces of the Sun, 19–40. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1442-7_2.
Повний текст джерелаFröhlich, Claus. "Solar Constant solar constant and Total Solar Irradiance Variations total solar irradiance (TSI) variations." In Encyclopedia of Sustainability Science and Technology, 9469–86. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_443.
Повний текст джерелаFröhlich, Claus. "Solar Constant solar constant and Total Solar Irradiance Variations total solar irradiance (TSI) variations." In Solar Energy, 399–416. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5806-7_443.
Повний текст джерелаFröhlich, Claus, and Judith Lean. "Total Solar Irradiance Variations." In New Eyes to See Inside the Sun and Stars, 89–102. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-4982-2_19.
Повний текст джерелаSpruit, H. C. "Solar Irradiance Variations: Theory." In New Eyes to See Inside the Sun and Stars, 103–9. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-4982-2_20.
Повний текст джерелаLario, David, and George M. Simnett. "Solar energetic particle variations." In Solar Variability and Its Effects on Climate, 195–216. Washington, D. C.: American Geophysical Union, 2004. http://dx.doi.org/10.1029/141gm14.
Повний текст джерелаFröhlich, Claus. "Observations of Irradiance Variations." In Solar Variability and Climate, 15–24. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-0888-4_2.
Повний текст джерелаReames, Donald V. "Introducing the Sun and SEPs." In Solar Energetic Particles, 1–18. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66402-2_1.
Повний текст джерелаFreeman, John W., and Ramon E. Lopez. "Solar Cycle Variations in the Solar Wind." In Solar Wind — Magnetosphere Coupling, 179–90. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4722-1_14.
Повний текст джерелаUnruh, Y. C., S. K. Solanki, and M. Fligge. "Modelling Solar Irradiance Variations: Comparison with Observations, Including Line-Ratio Variations." In Solar Variability and Climate, 145–52. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-0888-4_14.
Повний текст джерелаТези доповідей конференцій з теми "Solar variations"
Zhivanovich, I., A. A. Osipova, P. V. Strekalova, and V. G. Ivanov. "INTERPLANETARY MAGNETIC FIELD VARIATIONS ON THE LONG TIME SCALES." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2019. http://dx.doi.org/10.31725/0552-5829-2019-165-168.
Повний текст джерелаNagovitsyn, Yu A., and A. A. Osipova. "INTERPLANETARY MAGNETIC FIELD VARIATIONS ON THE LONG TIME SCALES." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2019. http://dx.doi.org/10.31725/0552-5829-2019-305-308.
Повний текст джерелаAndreeva, O. A., V. I. Abramenko, and V. M. Malashchuk. "ASYMMETRY VARIATIONS IN THE 24TH CYCLE OF SOLAR ACTIVITY." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2021. http://dx.doi.org/10.31725/0552-5829-2021-35-38.
Повний текст джерелаHo, G. C. "Composition Variations during Large Solar Energetic Particle Events." In SOLAR WIND TEN: Proceedings of the Tenth International Solar Wind Conference. AIP, 2003. http://dx.doi.org/10.1063/1.1618672.
Повний текст джерелаNeugebauer, M., B. E. Goldstein, D. J. McComas, S. T. Suess, and A. Balogh. "Velocity variations in the high-latitude solar wind." In Proceedings of the eigth international solar wind conference: Solar wind eight. AIP, 1996. http://dx.doi.org/10.1063/1.51461.
Повний текст джерелаChapanov, Y. "Solar Harmonics and ENSO Variations." In 11th Congress of the Balkan Geophysical Society. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202149bgs42.
Повний текст джерелаGorshkov, V., and Ya Chapanov. "WINTER NORTH ATLANTIC OSCILLATIONS DRIVEN BY TOTAL SOLAR IRRADIANCE VARIATIONS." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2019. http://dx.doi.org/10.31725/0552-5829-2019-119-122.
Повний текст джерелаvon Steiger, R., L. A. Fisk, G. Gloeckler, N. A. Schwadron, and T. H. Zurbuchen. "Composition variations in fast solar wind streams." In The solar wind nine conference. AIP, 1999. http://dx.doi.org/10.1063/1.58791.
Повний текст джерелаKirov, B., and K. Georgieva. "LONG-TERM VARIATIONS IN THE CORRELATION BETWEEN SOLAR ACTIVITY AND CLIMATE." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2020. http://dx.doi.org/10.31725/0552-5829-2020-153-158.
Повний текст джерелаAndreeva, O. A., and V. M. Malaschuk. "VARIATIONS IN THE ROTATION RATE OF THE CORONAL HOLE 2015–2017." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2018. http://dx.doi.org/10.31725/0552-5829-2018-27-30.
Повний текст джерелаЗвіти організацій з теми "Solar variations"
Paul, A. K. Diurnal, Seasonal and Solar Activity Variations of F-Region Parameters. Fort Belvoir, VA: Defense Technical Information Center, March 1994. http://dx.doi.org/10.21236/ada278106.
Повний текст джерелаForbes, Jeffrey M. Thermosphere Structure Variations during High Solar and Magnetic Activity Conditions. Fort Belvoir, VA: Defense Technical Information Center, September 1985. http://dx.doi.org/10.21236/ada171350.
Повний текст джерелаAkasofu, S. I., and L. C. Lee. A Study of the Relationship between Solar Activity and Interplanetary Field Variations. Fort Belvoir, VA: Defense Technical Information Center, February 1986. http://dx.doi.org/10.21236/ada169983.
Повний текст джерелаMarion, B. Preliminary Investigation of Methods for Correcting for Variations in Solar Spectrum under Clear Skies. Office of Scientific and Technical Information (OSTI), March 2010. http://dx.doi.org/10.2172/974901.
Повний текст джерелаJenan, R., T. L. Dammalage, and A. Kealy. The Influences of Solar Activities on TEC Variations of Equatorial Ionosphere over Sri Lanka. Balkan, Black sea and Caspian sea Regional Network for Space Weather Studies, March 2020. http://dx.doi.org/10.31401/sungeo.2019.02.05.
Повний текст джерелаJenan, R., T. L. Dammalage, and A. Kealy. The Influences of Solar Activities on TEC Variations of Equatorial Ionosphere over Sri Lanka. Balkan, Black sea and Caspian sea Regional Network for Space Weather Studies, March 2020. http://dx.doi.org/10.31401/sungeo.2020.02.05.
Повний текст джерелаKhaled, Safinaz A., Luc Damé, Mohamed A. Semeida, Magdy Y. Amin, Ahmed Ghitas, Shahinaz Yousef, and Penka Stoeva. Variations of the Hydrogen Lyman Alpha Line throughout Solar Cycle 24 on ESA/PROBA-2 and SORCE/SOLSTICE Data. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, September 2020. http://dx.doi.org/10.7546/crabs.2020.09.10.
Повний текст джерелаBojilova, Rumiana, and Plamen Mukhtarov. Relationship Between Short-term Variations of Solar Activity and Critical Frequencies of the Ionosphere Represented by FoF2 and MUF3000. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, October 2020. http://dx.doi.org/10.7546/crabs.2020.10.11.
Повний текст джерелаRiordan, C. J., and R. L. Hulstrom. Summary of studies that examine the effects of spectral solar radiation variations on PV (photovoltaic) device design and performance. Office of Scientific and Technical Information (OSTI), March 1989. http://dx.doi.org/10.2172/6222971.
Повний текст джерелаDavidson, Carolyn, and Robert Margolis. Selecting Solar: Insights into Residential Photovoltaic (PV) Quote Variation. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1225927.
Повний текст джерела