Space Climate
Open Access
J. Space Weather Space Clim.
Volume 2, 2012
Space Climate
Article Number A06
Number of page(s) 9
Published online 25 June 2012
  • Abreu, J.A., J.Beer, F.Steinhilber, S.M.Tobias, and N.O.Weiss, For how long will the current grand maximum of solar activity persist?, Geophys. Res. Lett., 35 (20), L20109, DOI: 10.1029/2008GL035442, 2008. [NASA ADS] [CrossRef]
  • Antia, H.M., and S.Basu, Solar rotation rate during the cycle 24 minimum in activity, Astrophys. J., 720, 494–502, DOI: 10.1088/0004-637X/720/1/494, 2010. [NASA ADS] [CrossRef]
  • Antia, H.M., and S.Basu, Zonal flows throughout cycle 23, J. Phys: Conf. Ser., 271 (1), 012072, DOI: 10.1088/1742-6596/271/1/012072, 2011. [CrossRef]
  • Arlt, R., and A.Abdolvand, First solar butterfly diagram from Schwabe’s observations in 1825–1867, in “The Physics of Sun and Star Spots”, Proc. IAU Symp., 273, 286–289, DOI: 10.1017/S1743921311015390, 2011.
  • Basu, S., and H.M.Antia, Characteristics of solar meridional flows during solar cycle 23, Astrophys. J., 717 (1), 488–495, DOI: 10.1088/0004-637X/717/1/488, 2010. [NASA ADS] [CrossRef]
  • Basu, S., and H.M.Antia, Characteristics of solar meridional flows, in “GONG-SoHO 24: A new era of seismology of the sun and solar-like stars”, J. Phys: Conf. Ser., 271, 12071, DOI: 10.1088/1742-6596/271/1/012071, 2011. [CrossRef]
  • Bergeot, N., J.Legrand, R.Burston, C.Bruyninx, P.Defraigne, et al., Correlation between solar activity and Earth’s ionospheric electron content during the 23rd solar cycle, American Geophysical Union, Fall Meeting 2010, abstract #SA33B-1774, 2010.
  • Brandenburg, A., The case for a distributed solar dynamo shaped by near-surface shear, Astrophys. J., 625, 539–547, DOI: 10.1086/429584, 2005. [NASA ADS] [CrossRef]
  • Bruinsma, S.L., and J.M.Forbes, Anomalous behavior of the thermosphere during solar minimum observed by CHAMP and GRACE, J. Geophys. Res., 115, A11323, DOI: 10.1029/2010JA015605, 2010. [CrossRef]
  • Charbonneau, P., Dynamo models of the solar cycle, Living Rev. Sol. Phys., 7 (3), Available at:, 2010.
  • Chen, Y., L.Liu, and W.Wan, Does the F10.7 index correctly describe solar EUV flux during the deep solar minimum of 2007–2009?J. Geophys. Res., 116, A04304, DOI: 10.1029/2010JA016301, 2011. [CrossRef]
  • Clette, F., D.Berghmans, P.Vanlommel, R.A.M.van der Linden, A.Koeckelenbergh, and L.Wauters, From the Wolf number to the International Sunspot Index: 25 years of SIDC, Adv. Space Res., 40, 919–928, DOI: 10.1016/j.asr.2006.12.045, 2007. [NASA ADS] [CrossRef]
  • Cliver, E.W., and A.G.Ling, The floor in the solar wind magnetic field revisited, Sol. Phys., 274 (1–2), 285–301, DOI: 10.1007/s11207-010-9657-6, 2010. [NASA ADS] [CrossRef]
  • Coffey, H.E., C.D.Hanchett, and E.H.Erwin, AAVSO solar division digital data archives at NGDC, J. AAVSO, 27 (1), 55–60, 1999.
  • Coley, W.R., R.A.Heelis, M.R.Hairston, G.D.Earle, M.D.Perdue, et al., Ion temperature and density relationships measured by CINDI from the C/NOFS spacecraft during solar minimum, J. Geophys. Res., 115, A02313, DOI: 10.1029/2009JA014665, 2010. [CrossRef]
  • de Toma, G., Evolution of coronal holes and implications for high-speed solar wind during the minimum between cycles 23 and 24, Sol. Phys., 213, 195–217, DOI: 10.1007/s11207-010-9677-2, 2010.
  • de Toma, G., S.E.Gibson, B.A.Emery, and C.N.Arge, The minimum between cycle 23 and 24: Is sunspot number the whole story?, in SOHO-23: Understanding a Peculiar Solar Minimum, eds.S.R.Cranmer, J.T.Hoeksema, and J.L.Kohl, ASP Conf. Ser., 428, 217–222, 2010.
  • Didkovsky, L.V., D.L.Judge, S.R.Wieman, and D.McMullin, Minima of solar cycles 22/23 and 23/24 as seen in SOHO/CELIAS/SEM absolute solar EUV flux, in “SOHO-23: Understanding a Peculiar Solar Minimum”eds.S.R., Cranmer, J.T.Hoeksema, and J.L.Kohl, ASP Conf. Ser., 428, 73–79, 2010.
  • Emmert, J.T., J.L.Lean, and J.M.Picone, Record-low thermospheric density during the 2008 solar minimum, Geophys. Res. Lett., 371, 12102, DOI: 10.1029/2010GL043671, 2010. [NASA ADS] [CrossRef]
  • Fisk, L.A., and L.Zhao, The heliospheric magnetic field and the solar wind during the solar cycle, IAU Symp., 257, 109–120, DOI: 10.1017/S1743921309029160, 2009.
  • Hathaway, D.H., and L.Rightmire, Variations in the Sun’s meridional flow over a solar cycle, Science, 327, 1350, DOI: 10.1126/science.1181990, 2010. [NASA ADS] [CrossRef]
  • Hathaway, D.H., and L.Rightmire, Variations in the axisymmetric transport of magnetic elements on the Sun: 1996–2010, Astrophys. J., 729 (2), 80–89, DOI: 10.1088/0004-637X/729/2/80, 2011. [NASA ADS] [CrossRef]
  • Heber, B., A.Kopp, J.Gieseler, R.Müller-Mellin, H.Fichtner, et al., Modulation of galactic cosmic ray protons and electrons during an unusual solar minimum, Astrophys. J., 699, 1956–1963, DOI: 10.1088/0004-637X/699/2/1956, 2009. [NASA ADS] [CrossRef]
  • Hossfield, C.H., A History of the Zurich and American relative sunspot number indices, J. AAVSO, 31 (1), 48–53, 2002.
  • Howe, R., J.Christensen-Dalsgaard, F.Hill, R.Komm, J.Schou, et al., A note on the torsional oscillation at solar minimum, Astrophys. J. Lett., 701 (2), L87–L90, DOI: 10.1088/0004-637X/701/2/L87, 2009. [NASA ADS] [CrossRef]
  • Howe, R., F.Hill, R.Komm, J.Christensen-Dalsgaard, T.P.Larson, et al., The torsional oscillation and the new solar cycle, J. Phys: Conf. Ser., 271 (1), 012074, DOI: 10.1088/1742-6596/271/1/012074, 2011. [NASA ADS] [CrossRef]
  • Janardhan, P., S.K.Bisoi, and S.Gosain, Solar polar fields during cycles 21–23: Correlation with meridional flows, Sol. Phys., 267 (2), 267–277, DOI: 10.1007/s11207-010-9653-x, 2010. [CrossRef]
  • Javaraiah, J., Long-term variations in the growth and decay rates of sunspot groups, Sol. Phys., 270 (2), 463–483, DOI: 10.1007/s11207-011-9768-8, 2011. [CrossRef]
  • Jian, L.K., C.T.Russell, and J.G.Luhmann, Comparing solar minimum 23/24 with historical solar wind records at 1 AU, Sol. Phys., 274 (1-2), 321–344, DOI: 10.1007/s11207-011-9737-2, 2011. [NASA ADS] [CrossRef]
  • Johnson, R.W., Power law relating 10.7 cm flux to sunspot number, Astrophys. Space Sci., 332 (1), 73–79, DOI: 10.1007/s10509-010-0500-1, 2010. [NASA ADS] [CrossRef]
  • Kane, R.P., Dissimilarity in the evolution of solar EUV and solar radio emission (2800 MHz) during 1999–2002, J. Geophys. Res., 108 (A12), 1455, DOI: 10.1029/2003JA009869, 2003. [NASA ADS] [CrossRef]
  • Kilcik, A., V.B.Yurchyshyn, V.Abramenko, P.R.Goode, A.Ozguc, et al., Time distributions of large and small sunspot groups over four solar cycles, Astrophys. J., 731 (1), 30, DOI: 10.1088/0004-637X/731/1/30, 2011. [NASA ADS] [CrossRef]
  • Komm, R., R.Howe, F.Hill, I.González Hernández, and D.Haber, Solar-cycle variation of zonal and meridional flow, J. Phys: Conf. Ser., 271 (1), 012077, DOI: 10.1088/1742-6596/271/1/012077, 2011. [NASA ADS] [CrossRef]
  • Lean, J.L., J.T.Emmert, J.M.Picone, and R.R.Meier, Global and regional trends in ionospheric total electron content, J. Geophys. Res. (Space Phys.), 116, A00H04 11, DOI: 10.1029/2010JA016378, 2011b. [CrossRef]
  • Lean, J.L., T.N.Woods, F.G.Eparvier, R.R.Meier, D.J.Strickland, et al., Solar extreme ultraviolet irradiance: Present, past, and future, J. Geophys. Res. (Space Phys.), 116, 1102, DOI: 10.1029/2010JA015901, 2011a. [CrossRef]
  • Lefèvre, L., and F.Clette, A global small sunspot deficit at the base of the index anomalies of solar cycle 23, A&A, 536, L11, DOI: 10.1051/0004-6361/201118034, 2011. [NASA ADS] [CrossRef] [EDP Sciences]
  • Lefèvre, L., F.Clette, and T.Baranyi, In-depth survey of sunspot and active region catalogs, in “The Physics of Sun and Star Spots”, IAU Symp., 273, 221–225, DOI: 10.1017/S1743921311015286, 2011.
  • Liu, L., Y.Chen, H.Le, V.I.Kurkin, N.M.Polekh, et al., The ionosphere under extremely prolonged low solar activity, J. Geophys. Res., 116 (A4), A04320, DOI: 10.1029/2010JA016296, 2011b. [CrossRef]
  • Liu, L., H.Le, Y.Chen, M.He, W.Wan, et al., Features of the middle- and low-latitude ionosphere during solar minimum as revealed from COSMIC radio occultation measurements, J. Geophys. Res. (Space Phys.), 116, 1102, DOI: 10.1029/2011JA016691, 2011a.
  • Livingston, W., and M.Penn, Are sunspots different during this solar minimum?, EOS Trans., 90 (30), 257–258, 2009. [NASA ADS] [CrossRef]
  • Lukianova, R., and K.Mursula, Changed relation between sunspot numbers, solar UV/EUV radiation and TSI during the declining phase of solar cycle 23, J. Atmos. Sol. Terr. Phys., 73 (2-3), 235–240, DOI: 10.1016/j.jastp.2010.04.002, 2011. [NASA ADS] [CrossRef]
  • Lürh, H., and C.Xiong, IRI2007 model overestimates electron density during the 23/24 solar minimum, Geophys. Res. Lett., 37, L23101, DOI: 10.1029/2010GL045430, 2010. [CrossRef]
  • McComas, D.J., R.W.Ebert, H.A.Elliott, B.E.Goldstein, J.T.Gosling, et al., Weaker solar wind from the polar coronal holes and the whole Sun, Geophys. Res. Lett., 35 (18), L18103, DOI: 10.1029/2008GL034896, 2008. [NASA ADS] [CrossRef]
  • McDonald, F.B., W.R.Webber, and D.V.Reames, Unusual time histories of galactic and anomalous cosmic rays at 1 AU over the deep solar minimum of cycle 23/24, Geophys. Res. Lett., 37 (18), L18101, DOI: 10.1029/2010GL044218, 2010. [NASA ADS] [CrossRef]
  • Mewaldt, R.A., A.J.Davis, K.A.Lave, R.A.Leske, E.C.Stone, et al., Record-setting cosmic-ray intensities in 2009 and 2010, Astrophys. J. Lett., 723 (1), L1–L6, DOI: 10.1088/2041-8205/723/1/L1, 2010. [NASA ADS] [CrossRef]
  • Muñoz-Jaramillo, A., D.Nandy, P.C.H.Martens, and A.R.Yeates, A double-ring algorithm for modeling solar active regions: Unifying kinematic dynamo models and surface flux-transport simulations, Astrophys. J. Lett., 720, L20–L25, DOI: 10.1088/2041-8205/720/1/L20, 2010. [NASA ADS] [CrossRef]
  • Nandy, D., Dynamo models of the solar cycle: Current trends and future prospects, in Proc. of the 1st Asia Pacific Solar Physics Meeting, ASI Conf. Ser., [eprint: arXiv:1110.5725], 2011.
  • Nandy, D., A.Muñoz-Jaramillo, and P.C.H.Martens, Unusual Minimum of sunspot cycle 23 caused by meridional plasma flow variations, Nature, 471 (7336), 80–82, DOI: 10.1038/nature09786, 2011. [NASA ADS] [CrossRef]
  • Penn, M., and W., Livingston, Long-term evolution of sunspot magnetic fields, in “The Physics of Sun and Star Spots”, Proc. of the IAU, IAU Symp., 273, 126–133, DOI: 10.1017/S1743921311015122, 2011.
  • Pesnell, W.D., Predictions of solar cycle 24, Sol. Phys., 252 (1), 209–220, 10.1007/s11207-008-9252-2, 2008. [NASA ADS] [CrossRef]
  • Rezaei, R., C.Beck, and W.Schmidt, Variation in sunspot properties between 1999 and 2011 as observed with the Tenerife Infrared Polarimeter, A&A, 541, A60, DOI: 10.1051/0004-6361/201118635, 2012. [NASA ADS] [CrossRef] [EDP Sciences]
  • Schaefer, B.E., Automatic inflation of the AAVSO sunspot number, J. AAVSO, 26, 40–46, 1997.
  • Schatten, K.H., Modeling a shallow solar dynamo, Sol. Phys., 255 (1), 3–38, DOI: 10.1007/s11207-008-9308-3, 2009. [NASA ADS] [CrossRef]
  • Sheeley, N.R.Jr., A century of polar faculae variations, Astrophys. J. Lett., 680 (2), 1553–1559, DOI: 10.1086/588251, 2008. [NASA ADS] [CrossRef]
  • Smith, E.J., and A.Balogh, Decrease in heliospheric magnetic flux in this solar minimum: Recent Ulysses magnetic field observations, Geophys. Res. Lett., 35 (22), L22103, 2008. [NASA ADS] [CrossRef]
  • Solomon, S.C., L.Qian, L.V.Didkovsky, R.A.Viereck, and T.N.Woods, Causes of low thermospheric density during the 2007–2009 solar minimum, J. Geophys. Res. (Space Phys.), 116, A00H07, DOI: 10.1029/2011JA016508, 2011. [CrossRef]
  • Solomon, S.C., T.N.Woods, L.V.Didkovsky, J.T.Emmert, and L.Qian, Anomalously low solar extreme-ultraviolet irradiance and thermospheric density during solar minimum, Geophys. Res. Lett., 371, 16103, DOI: 10.1029/2010GL044468, 2010. [NASA ADS] [CrossRef]
  • Svalgaard, L., and H.S.Hudson, The solar microwave flux and the sunspot number, in “SOHO-23: Understanding a Peculiar Solar Minimum”, Eds.S.R.Cranmer, J.T.Hoeksema, and J.L.Kohl, ASP Conf. Ser., 428, 325, 2010.
  • Tapping, K.F., and J.J.Valdés, Did the Sun change its behaviour during the decline of cycle 23 and into cycle 24?Sol. Phys., 272, 337–350, DOI: 10.1007/s11207-011-9827-1, 2011. [NASA ADS] [CrossRef]
  • Usoskin, I.G., S.K.Solanki, and G.A.Kovaltsov, Grand minima and maxima of solar activity: New observational constraints, A&A, 471 (1), 301–309, DOI: 10.1051/0004-6361:20077704, 2007. [NASA ADS] [CrossRef] [EDP Sciences]
  • Wang, Y.-M., E.Robbrecht, and N.R.SheeleyJr., On the weakening of the polar magnetic fields during solar cycle 23, Astrophys. J. Lett., 707 (2), 1372–1386, DOI: 10.1088/0004-637X/707/2/1372, 2009. [NASA ADS] [CrossRef]
  • Watson, F.T., L.Fletcher, and S.Marshall, Evolution of sunspot properties during solar cycle 23, A&A, 533, A14, DOI: 10.1051/0004-6361/201116655, 2011. [NASA ADS] [CrossRef] [EDP Sciences]
  • Wintoft, P., The variability of solar EUV: A multiscale comparison between sunspot number, 10.7 cm flux, LASP MgII index, and SOHO/SEM EUV flux, J. Atmos. Sol. Terr. Phys., 73 (13), 1708–1714, DOI: 10.1016/j.jastp.2011.03.009, 2011. [CrossRef]
  • Woods, T.N., Irradiance variations during this solar cycle minimum, in “SOHO-23: Understanding a Peculiar Solar Minimum”, eds.S.R., Cranmer, J.T.Hoeksema, and J.L.Kohl, ASP Conf. Ser., 428, 63–71, 2010.
  • Woods, T., Lower solar extreme ultraviolet irradiances during the solar cycle 23/24 minimum, in Proc. 38th COSPAR Scientific Assembly, 38, 1127, 2010.

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