Abstract
We present an overview of the data and models collected for the Whole Heliosphere Interval, an international campaign to study the three-dimensional solar–heliospheric–planetary connected system near solar minimum. The data and models correspond to solar Carrington Rotation 2068 (20 March – 16 April 2008) extending from below the solar photosphere, through interplanetary space, and down to Earth’s mesosphere. Nearly 200 people participated in aspects of WHI studies, analyzing and interpreting data from nearly 100 instruments and models in order to elucidate the physics of fundamental heliophysical processes. The solar and inner heliospheric data showed structure consistent with the declining phase of the solar cycle. A closely spaced cluster of low-latitude active regions was responsible for an increased level of magnetic activity, while a highly warped current sheet dominated heliospheric structure. The geospace data revealed an unusually high level of activity, driven primarily by the periodic impingement of high-speed streams. The WHI studies traced the solar activity and structure into the heliosphere and geospace, and provided new insight into the nature of the interconnected heliophysical system near solar minimum.
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Arge, C.N., Pizzo, V.J.: 2000, Improvement in the prediction of solar wind conditions using near-real time solar magnetic field updates. J. Geophys. Res. 105, 10465. doi: 10.1029/1999JA900262 .
Altrock, R.C.: 2011, Coronal Fe XIV emission during the whole heliosphere interval campaign. Solar Phys. doi: 10.1007/s11207-011-9714-9 .
Araujo-Pradere, E.A., Redmon, R., Fedrizzi, M., Viereck, R., Fuller-Rowell, T.J.: 2011, Some characteristics of the ionospheric behavior during the solar cycle 23 – 24 minimum. Solar Phys. doi: 10.1007/s11207-011-9728-3 .
Aschwanden, M.J.: 2011a, The state of self-organized criticality of the Sun during the last three solar cycles. I. Observations. Solar Phys. doi: 10.1007/s11207-011-9755-0 .
Aschwanden, M.J.: 2011b, The state of self-organized criticality of the Sun during the last three solar cycles. II. Theoretical modeling. Solar Phys. doi: 10.1007/s11207-011-9835-1 .
Baker, D.N., McPherron, R.L., Cayton, T.E., Klebesadel, R.W.: 1990, Linear prediction filter analysis of relativistic electron properties at 6.6 Re. J. Geophys. Res. 95(A9), 15133 – 15140. doi: 10.1029/JA095iA09p15133 .
Biesecker, D.A., Thompson, B.J., Gibson, S.E., Alexander, D., Fludra, A., Gopalswamy, N., Hoeksema, J.T., Lecinski, A., Strachan, L.: 1999, Synoptic Sun during the first whole Sun month campaign: August 10 to September 8, 1996. J. Geophys. Res. 104, 9679. doi: 10.1029/1998JA900056 .
Bisi, M.M., Jackson, B.V., Buffington, A., Clover, J.M., Hick, P.P., Tokumaru, M.: 2009a, Low-resolution STELab IPS 3D reconstructions of the whole heliosphere interval and comparison with in-ecliptic solar wind measurements from STEREO and Wind instrumentation. Solar Phys. 256, 201. doi: 10.1007/s11207-009-9350-9 .
Bisi, M.M., Jackson, B.V., Hick, P.P., Buffington, A., Clover, J.M.: 2009b, Coronal mass ejection reconstructions from interplanetary scintillation data using a kinematic model: a brief review. In: Duldig, M. (ed.) Adv. Geosciences 14, World Scientific, Singapore, 161. http://adsabs.harvard.edu/abs/2009aogs...14..161B .
Bisi, M.M., Jackson, B.V., Clover, J.M., Hick, P.P., Buffington, A.: 2010a, A summary of 3-D reconstructions of the whole heliosphere interval and comparison with in-ecliptic solar wind measurements from STEREO, ACE, and wind instrumentation. In: Corbett, I.F. (ed.) Whole Heliosphere Interval: Overview of JD16, Highlights of Astronomy 15, Cambridge Univ. Press, Cambridge, 480. doi: 10.1017/S1743921310010331 .
Bisi, M.M., Breen, A.R., Jackson, B.V., Fallows, R.A., Walsh, A.P., Mikić, Z., Riley, P., Owen, C.J., Gonzalez-Esparza, A., Aguilar-Rodriguez, E., Morgan, H., Jensen, E.A., Wood, A.G., Owens, M.J., Tokumaru, M., Manoharan, P.K., Chashei, I.V., Giunta, A.S., Linker, J.A., Shishov, V.I., Tyul’bashev, S.A., Agalya, G., Glubokova, S.K., Hamilton, M.S., Fujiki, K., Hick, P.P., Clover, J.M., Pintér, B.: 2010b, Remote sensing of the inner heliosphere. Solar Phys. 265, 49. doi: 10.1007/s11207-010-9602-8 .
Canfield, R.C., Hudson, H.S., Pevtsov, A.A.: 2000, Sigmoids as precursors of solar eruptions. IEEE Trans. Plasma Sci. 28, 1786. doi: 10.1109/27.902208 .
Chamberlin, P.C., Woods, T.N., Crotser, D.A., Eparvier, F.G., Hock, R.A., Woodraska, D.L.: 2009, Solar cycle minimum measurements of the solar extreme ultraviolet spectral irradiance on 14 April 2008. Geophys. Res. Lett. 36, L05102. doi: 10.1029/2008GL037145 .
Cliver, E.W., Ling, A.G.: 2011, The floor in the solar wind magnetic field revisited. Solar Phys. doi: 10.1007/s11207-010-9657-6 .
Cremades, H., Mandrini, C.H., Dasso, S.: 2011, Coronal transient events during two solar minima: Their solar source regions and interplanetary counterparts. Solar Phys. doi: 10.1007/s11207-011-9769-7 .
de Toma, G.: 2010, Evolution of coronal holes and implications for high-speed solar wind during the minimum between cycles 23 and 24. Solar Phys. doi: 10.1007/s11207-010-9677-2 .
Echer, E., Tsurutani, B.T., Gonzalez, W.D.: 2011. On the use of lowest levels in geomagnetic activity in the space age. Adv. Space Res. submitted.
Echer, E., Tsurutani, B.T., Gonzalez, W.D., Kozyra, J.U.: 2011, High speed stream properties and related geomagnetic activity during the whole heliosphere interval (WHI): 20 March to 16 April 2008. Solar Phys. doi: 10.1007/s11207-011-9739-0 .
Emery, B.A., Richardson, I.G., Evans, D.S., Rich, F.J., Wilson, G.R.: 2011, Solar rotational periodicities and the semiannual variation in the solar wind, radiation belt, and aurora. Solar Phys. doi: 10.1007/s11207-011-9758-x .
Emmert, J.T., Lean, J.L., Picone, J.M.: 2010, Record-low thermospheric density during the 2008 solar minimum. Geophys. Res. Lett. 37, L12102. doi: 10.1029/2010GL043671 .
Fisk, L.A., Zhao, L.: 2009, The heliospheric magnetic field and the solar wind during the solar cycle. In: Gopalswamy, N., Webb, D.F. (eds.) Universal Heliophysical Processes, Proc. IAU Symp. 257, Cambridge Univ. Press, Cambridge, 109. doi: 10.1017/S1743921309029160 .
Galvin, A.B., Kohl, J.L.: 1999, Whole Sun month at solar minimum: An introduction. J. Geophys. Res. 104, 9673. doi: 10.1029/1999JA900008 .
Gibson, S.E., Biesecker, D.A., Guhathakurta, M., Hoeksema, J.T., Lazarus, A.J., Linker, J., Mikić, Z., Pisanko, Y., Riley, P., Steinberg, J., Strachan, L., Szabo, A., Thompson, B.J., Zhao, X.P.: 1999, The three-dimensional coronal magnetic field during whole Sun month. Astrophys. J. 520, 871. doi: 10.1086/307496 .
Gibson, S.E., Kozyra, J.U., de Toma, G., Emery, B.A., Onsager, T., Thompson, B.J.: 2009, If the Sun is so quiet, why is the Earth ringing? A comparison of two solar minimum intervals. J. Geophys. Res. 114, 9105. doi: 10.1029/2009JA014342 .
Gibson, S.E., De Toma, G., Emery, B., Riley, P., Zhao, L., Elsworth, Y., Leamon, R.J., Lei, J., McIntosh, S., Mewaldt, R.A., Thompson, B.J., Webb, D.: 2011, The whole heliosphere interval in the context of a long and structured solar minimum: an overview from Sun to Earth. Solar Phys. doi: 10.1007/s11207-011-9921-4
Haber, D.A.: 2008, Subsurface flows near active regions and filaments as determined by local helioseismology. In: Howe, R., Komm, R.W., Balasubramaniam, K.S., Petrie, G.J.D. (eds.) Subsurface and Atmospheric Influences on Solar Activity CS-383, Astron. Soc. Pac., San Francisco, 31.
Haber, D.A., Hindman, B.W., Toomre, J., Bogart, R.S., Larsen, R.M., Hill, F.: 2002, Evolving submerged meridional circulation cells within the upper convection zone revealed by ring-diagram analysis. Astrophys. J. 570, 855. doi: 10.1086/339631 .
Haberreiter, M.: 2011, Solar EUV spectrum calculated for quiet Sun conditions. Solar Phys. doi: 10.1007/s11207-011-9767-9 .
Jackman, C.M., Arridge, C.S.: 2011, Solar cycle effects on the dynamics of Jupiter’s and Saturn’s magnetospheres. Solar Phys. doi: 10.1007/s11207-011-9748-z .
Jackson, B.V., Hick, P.P.: 2005, Three-dimensional tomography of interplanetray disturbances. In: Gary, D., Keller, C. (eds.) Solar and Space Weahther Radiophysics: Current Status and Future Developments, Astrophys. and Space Sci. Lib. 314. Kluwer, Dordrecht, 355. doi: 10.1007/1-4020-2814-8_17 .
Jian, L.K., Russell, C.T., Luhmann, J.G.: 2011, Comparing solar minimum 23/24 with historical solar wind records at 1 AU. Solar Phys. doi: 10.1007/s11207-011-9737-2 .
Kosovichev, A.G., Duvall, T.L. Jr.: 2011, Investigation of a sunspot complex by heioseismology. In: Choudhary, D., Strassmeier, K. (eds.) The Physics of Sun and Star Spots, Proc. IAU Symp. 373. Cambridge Univ. Press, Cambridge, 320. doi: 10.1017/S1733921311015456 .
Leamon, R.J., McIntosh, S.W.: 2009, How the solar wind ties to its photospheric origins. Astrophys. J. Lett. 697, L28. doi: 10.1088/0004-637X/697/1/L28 .
Lei, J., Thayer, J.P., Wang, W., McPherron, R.L.: 2011, Impact of CIR storms on thermosphere density variability during the solar minimum of 2008. Solar Phys. doi: 10.1007/s11207-010-9563-y .
Lepping, R.P., Wu, C.-C., Berdichevsky, D.B., Szabo, A.: 2010, Magnetic clouds at/near the 2007 – 2009 solar minimum: Frequency of occurrence and some unusual properties. Solar Phys. doi: 10.1007/s11207-010-9646-9 .
Linker, J.A., Mikić, Z., Biesecker, D.A., Forsyth, R.J., Gibson, S.E., Lazarus, A.J., Lecinski, A., Riley, P., Szabo, A., Thompson, B.J.: 1999, Magnetohydrodynamic modeling of the solar corona during whole Sun month. J. Geophys. Res. 104, 9809. doi: 10.1029/1998JA900159 .
Manoharan, P.K.: 2010, Peculiar current solar-minimum structure of the heliosphere. In: Corbett, I.F. (ed.) Whole Heliosphere Interval: Overview of JD16, Highlights of Astronomy 15, Cambridge Univ. Press, Cambridge, 484. doi: 10.1017/S1743921310010343 .
Maris, G., Maris, O.: 2010, WHI high-speed streams at geospace. In: Corbett, I.F. (ed.) Highlights Astron. 15, Cambridge Univ. Press, Cambridge, 494. doi: 10.1017/S147439213100010379 .
McIntosh, P.S.: 2003, Patterns and dynamics of solar magnetic fields and He I coronal holes in cycle 23. In: Wilson, A. (ed.) ISCS Symp., Solar Variability as an Input to the Earth’s Environment SP-535, ESA, Noordwijk, 807.
McIntosh, S.W., De Pontieu, B.: 2009, What goes up doesn’t necessarily come down! Connecting the dynamics of the chromosphere and transition region with TRACE, Hinode and SUMER. In: Lites, B., Cheung, M., Magara, T., Mariska, J., Reeves, K. (eds.) The Second Hinode Science Meeting: Beyond Discovery-Toward Understanding CS-415, Astron. Soc. Pac., San Francisco, 24.
McIntosh, S.W., Davey, A.R., Hassler, D.M.: 2006, Simple magnetic flux balance as an indicator of Ne VIII Doppler velocity partitioning in an equatorial coronal hole. Astrophys. J. Lett. 644, L87. doi: 10.1086/505488 .
Mlynczak, M.G., Hunt, L.A., Thomas Marshall, B., Martin-Torres, F.J., Mertens, C.J., Russell, J.M., Remsberg, E.E., López-Puertas, M., Picard, R., Winick, J., Wintersteiner, P., Thompson, R.E., Gordley, L.L.: 2010, Observations of infrared radiative cooling in the thermosphere on daily to multiyear timescales from the TIMED/SABER instrument. J. Geophys. Res. 115, 3309. doi: 10.1029/2009JA014713 .
Muller, R., Utz, D., Hanslmeier, A.: 2011, Non-varying granulation and photospheric network during the extended 2007 – 2009 solar minimum. Solar Phys. doi: 10.1007/s11207-011-9725-6 .
Nitta, N.V.: 2011, Observables indicating two major coronal mass ejections during the WHI. Solar Phys. doi: 10.1007/s11207-011-9806-6 .
Petrie, G.J.D., Canou, A., Amari, T.: 2011, Nonlinear force-free and potential-field models of active-region and global coronal fields during the whole heliosphere interval. Solar Phys. doi: 10.1007/s11207-010-9687-0 .
Picone, J.M., Hedin, A.E., Drob, D.P., Aikin, A.C.: 2002, J. Geophys. Res. 107, 15. doi: 10.1029/2002JA009430 .
Riley, P., Linker, J.A., Mikić, Z.: 2010, Global MHD modeling of the solar corona and inner heliosphere for the whole heliosphere interval. In: Corbett, I.F. (ed.) Whole Heliosphere Interval: Overview of JD16, Highlights of Astronomy 15, Cambridge Univ. Press, Cambridge, 491. doi: 10.1017/S1743921310010367 .
Riley, P., Lionello, R., Linker, J.A., Mikić, Z., Luhmann, J., Wijaya, J.: 2011, Global MHD modeling of the solar corona and inner heliosphere for the whole heliosphere interval. Solar Phys. doi: 10.1007/s11207-010-9698-x .
Russell, C.T., McPherron, R.L.: 1973, Semiannual variation of geomagnetic activity. J. Geophys. Res. 78, 92. doi: 10.1029/JA078i001p00092 .
Shibasaki, K.: 1998, Radio synoptic maps and polar CAP brightening. In: Balasubramaniam, K.S., Harvey, J., Rabin, D.M. (eds.) Synoptic Solar Physics – 18th NSO/Sacramento Peak Summer Workshop CS-140, Astron. Soc. Pac., San Francisco, 373.
Sojka, J.J., Nicolls, M., van Eyken, A., Heinselman, C., Bilitza, D.: 2011, 24/7 solar minimum polar cap and auroral ion temperature observations. Adv. Space Res. 48, 1. doi: 10.1016/j.asr.2011.03.005 .
Solomon, S.C., Woods, T.N., Didkovsky, L.V., Emmert, J.T., Qian, L.: 2010, Anomalously low solar extreme-ultraviolet irradiance and thermospheric density during solar minimum. Geophys. Res. Lett. 37, L16103. doi: 10.1029/2010GL044468 .
Solomon, S.C., Qian, L., Didkovsky, L.V., Viereck, R.A., Woods, T.N.: 2011, Causes of low thermospheric density during the 2007 – 2009 solar minimum. J. Geophys. Res. 116, A00H07. doi: 10.1029/2011JA016508 .
Suess, S.T.: 2007, Where is Ulysses today? http://stereo-ssc.nascom.nasa.gov/plans/UlyLocation2006-2014_v1.pdf , http://ulysses.jpl.nasa.gov/science/UlyLocation2006-2014_v2.pdf .
Thompson, B.J., Gopalswamy, N., Davila, J.M., Haubold, H.J. (eds.): 2009, Putting the “I” in IHY: The United Nations Report for the International Heliophysical Year 2007, Springer, Dordrecht.
Vásquez, A.M., Huang, Z., Manchester, W.B., Frazin, R.A.: 2011, The WHI corona from differential emission measure tomography. Solar Phys. doi: 10.1007/s11207-010-9706-1 .
Wang, W., Lei, J., Burns, A.G., Qian, L., Solomon, S.C., Wiltberger, M., Xu, J.: 2011, Ionospheric day-to-day variability around the whole heliosphere interval in 2008. Solar Phys. doi: 10.1007/s11207-011-9747-0 .
Webb, D.F., Cremades, H., Sterling, A.C., Mandrini, C.H., Dasso, S., Gibson, S.E., Haber, D.A., Komm, R.W., Petrie, G.J.D., McIntosh, P.S., Welsch, B.T., Plunkett, S.P.: 2011, The global context of solar activity during the whole heliosphere interval campaign. Solar Phys. doi: 10.1007/s11207-011-9787-5 .
Welsch, B.T., Christe, S., McTiernan, J.M.: 2011, Photospheric magnetic evolution in the WHI active regions. Solar Phys. doi: 10.1007/s11207-011-9759-9 .
White, O., Kopp, G., Snow, M., Tapping, K.: 2011, The solar cycle 23 – 24 minimum. A benchmark in solar variability and effects in the heliosphere. Solar Phys. doi: 10.1007/s11207-010-9680-7 .
Woods, T.N., Chamberlin, P.C., Harder, J.W., Hock, R.A., Snow, M., Eparvier, F.G., Fontenla, J., McClintock, W.E., Richard, E.C.: 2009, Solar irradiance reference spectra (SIRS) for the 2008 whole heliosphere interval (WHI). Geophys. Res. Lett. 36, L01101. doi: 10.1029/2008GL036373 .
Zhao, L., Fisk, L.A.: 2011, Understanding the behavior of the heliospheric magnetic field and the solar wind during the unusual solar minimum between cycles 23 and 24. Solar Phys. doi: 10.1007/s11207-011-9840-4 .
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Invited Review
The Sun–Earth Connection near Solar Minimum
Guest Editors: M.M. Bisi, B.A. Emery, and B.J. Thompson
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Thompson, B.J., Gibson, S.E., Schroeder, P.C. et al. A Snapshot of the Sun Near Solar Minimum: The Whole Heliosphere Interval. Sol Phys 274, 29–56 (2011). https://doi.org/10.1007/s11207-011-9891-6
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DOI: https://doi.org/10.1007/s11207-011-9891-6