Abstract
Corotating interaction regions (CIRs) form in the interaction region between the solar-wind high-speed streams and slow streams, leading to compressed plasma and magnetic fields. Using solar-wind measurements upstream of Earth, we identified 290 CIRs encountered by Earth during January 2008 through December 2019 (Solar Cycle 24). The occurrence rate is the maximum during the solar-cycle descending phase (\(\approx 33\) year−1), followed by occurrences during solar minimum (\(\approx 24\) year−1), the ascending phase (\(\approx 22\) year−1), and solar maximum (\(\approx 11\) year−1). At 1 AU, CIRs are found to be large-scale interplanetary structures with an average (median) duration of \(\approx 26\) hours (\(\approx 24\) hours) and radial extent of \(\approx 0.31\) AU (\(\approx 0.27\) AU). CIRs are characterized by average (median) plasma density of \(\approx 29\) cm−3 (\(\approx 26\) cm−3), ram pressure of \(\approx 11\) nPa (\(\approx 9\) nPa), temperature of \(\approx 5\times 10^{5}\) K (\(\approx 4\times 10^{5}\) K), and magnetic-field magnitude of \(\approx 15\) nT (\(\approx 14\) nT). The CIR characteristic features exhibit no clear solar-cycle phase dependence. About 30% of the CIRs are found to be geoeffective, causing geomagnetic storms with the peak SYM-H \(\leq -50\) nT; 25% caused moderate storms (−50 nT ≥ SYM-H \(>-100\) nT), and 5% caused intense storms (SYM-H \(\leq -100\) nT). The geoeffectiveness is found to decrease with the decreasing solar flux. CIRs during equinoxes are found to be more geoeffective compared to those during solstices. On average, SYM-H is strongly associated with the CIR plasma characteristic parameters (anti-correlation coefficient \(r=-0.65\) to −0.89), while the association is weaker for the AE-index (\(r=0.41\) to 0.67).
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Data Availability
The solar-wind plasma and interplanetary magnetic-field data are collected from OMNIWeb (omniweb.gsfc.nasa.gov/). The solar coronal AIA images are taken from NASA’s Solar Dynamics Observatory (sdo.gsfc.nasa.gov/). The geomagnetic SYM-H and AE indices are obtained from the World Data Center for Geomagnetism, Kyoto, Japan (wdc.kugi.kyoto-u.ac.jp/). The \(F_{10.7}\) solar flux are obtained from the LASP Interactive Solar Irradiance Data Center (lasp.colorado.edu/lisird/).
References
Allen, R.C., Lario, D., Odstrcil, D., Ho, G.C., Jian, L.K., Cohen, C.M.S., Badman, S.T., Jones, S.I., Arge, C.N., Mays, M.L., Mason, G.M., Bale, S.D., Bonnell, J.W., Case, A.W., Christian, E.R., Dudok de Wit, T., Goetz, K., Harvey, P.R., Henney, C.J., Hill, M.E., Kasper, J.C., Korreck, K.E., Larson, D., Livi, R., MacDowall, R.J., Malaspina, D.M., McComas, D.J., McNutt, R., Mitchell, D.G., Pulupa, M., Raouafi, N., Schwadron, N., Stevens, M.L., Whittlesey, P.L., Wiedenbeck, M.: 2020, Solar wind streams and stream interaction regions observed by the Parker Solar Probe with corresponding observations at 1 au. Astrophys. J. Suppl. 246, 36. DOI.
Allen, R.C., Ho, G.C., Mason, G.M., Li, G., Jian, L.K., Vines, S.K., Schwadron, N.A., Joyce, C.J., Bale, S.D., Bonnell, J.W., Case, A.W., Christian, E.R., Cohen, C.M.S., Desai, M.I., Filwett, R., Goetz, K., Harvey, P.R., Hill, M.E., Kasper, J.C., Korreck, K.E., Lario, D., Larson, D., Livi, R., MacDowall, R.J., Malaspina, D.M., McComas, D.J., McNutt, R., Mitchell, D.G., Paulson, K.W., Pulupa, M., Raouafi, N., Stevens, M.L., Whittlesey, P.L., Wiedenbeck, M.: 2021, Radial evolution of a CIR: observations from a nearly radially aligned event between Parker Solar Probe and STEREO-A. Geophys. Res. Lett. 48, e2020GL091376. DOI.
Alves, M.V., Echer, E., Gonzalez, W.D.: 2006, Geoeffectiveness of corotating interaction regions as measured by Dst index. J. Geophys. Res. 111, A07S05. DOI.
Baker, D.N., Kanekal, S.G., Pulkkinen, T.I., Blake, J.B.: 1999, Equinoctial and solstitial averages of magnetospheric relativistic electrons: a strong semiannual modulation. Geophys. Res. Lett. 26, 3193. DOI.
Belcher, J.W., Davis, L. Jr.: 1971, Large-amplitude Alfvén waves in the interplanetary medium, 2. J. Geophys. Res. 76, 3534. DOI.
Boller, B.R., Stolov, H.L.: 1970, Kelvin-Helmholtz instability and the semiannual variation of geomagnetic activity. J. Geophys. Res. 75, 6073. DOI.
Broun, J.A.: 1848, Observations in magnetism and meteorology made at Makerstoun in Scotland. Trans. Roy. Soc. Edinb. 18, 401.
Burlaga, L.F., Behannon, K.W., Hansen, S.F., Pneuman, G.W., Feldman, W.C.: 1978, Sources of magnetic fields in recurrent interplanetary streams. J. Geophys. Res. 83, 4177. DOI.
Burlaga, L.F., Klein, L.W., Lep**, R.P., Behannon, K.W.: 1984, Large-scale interplanetary magnetic fields: Voyager 1 and 2 observations between 1 AU and 9.5 AU. J. Geophys. Res. 89, 10659. DOI.
Chi, Y., Shen, C., Luo, B., Wang, Y., Xu, M.: 2018, Geoeffectiveness of stream interaction regions from 1995 to 2016. Space Weather 16, 1960. DOI.
Cliver, E.W., Kamide, Y., Ling, A.G.: 2000, Mountains versus valleys: semiannual variation of geomagnetic activity. J. Geophys. Res. 105, 2413. DOI.
Cortie, A.L.S.J.: 1912, Sun-spots and terrestrial magnetic phenomena, 1898 – 1911: the cause of the annual variation in magnetic disturbances. Mon. Not. Roy. Astron. Soc. 73, 52. DOI.
Daglis, I.A., Thorne, R.M., Baumjohann, W., Orsini, S.: 1999, The terrestrial ring current: origin, formation, and decay. Rev. Geophys. 37, 407. DOI.
Danilov, A.A., Krymskii, G.F., Makarov, G.A.: 2013, Geomagnetic activity as a reflection of processes in the magnetospheric tail: 1. The source of diurnal and semiannual variations in geomagnetic activity. Geomagn. Aeron. 53, 469. DOI.
Davis, T.N., Sugiura, M.: 1966, Auroral electrojet activity index AE and its universal time variations. J. Geophys. Res. 71, 785. DOI.
Dungey, J.W.: 1961, Interplanetary magnetic field and the auroral zones. Phys. Rev. Lett. 6, 47. DOI.
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. 274, 303. DOI.
Frank, L.A.: 1967, On the extraterrestrial ring current during geomagnetic storms. J. Geophys. Res. 72, 3753. DOI.
Gardner, L., Sojka, J.J., Schunk, R.W., Heelis, R.: 2012, Changes in thermospheric temperature induced by high-speed solar wind streams. J. Geophys. Res. 117, A12303. DOI.
Gazis, P.R., McDonald, F.B., Burger, R.A., Chalov, S., Decker, R.B., Dwyer, J., Intriligator, D.S., Jokipii, J.R., Lazarus, A.J., Mason, G.M., Pizzo, V.J., Potgieter, M.S., Richardson, I.G., Lanzerotti, L.J.: 1999, Corotating interaction regions in the outer heliosphere. Space Sci. Rev. 89, 269. DOI.
Gonzalez, W.D., Joselyn, J.A., Kamide, Y., Kroehl, H.W., Rostoker, G., Tsurutani, B.T., Vasyliunas, V.M.: 1994, What is a geomagnetic storm? J. Geophys. Res. 99, 5771. DOI.
Gopalswamy, N., Nunes, S., Yashiro, S., Howard, R.A.: 2004, Variability of solar eruptions during cycle 23. Adv. Space Res. 34, 391. DOI.
Gosling, J.T., Hundhausen, A.J., Bame, S.J.: 1976, Solar wind stream evolution at large heliocentric distances: experimental demonstration and the test of a model. J. Geophys. Res. 81, 2111. DOI.
Grandin, M., Aikio, A.T., Kozlovsky, A.: 2019, Properties and geoeffectiveness of solar wind high-speed streams and stream interaction regions during Solar Cycles 23 and 24. J. Geophys. Res. 124, 3871. DOI.
Hajra, R.: 2021a, Variation of the interplanetary shocks in the inner heliosphere. Astrophys. J. 917, 91. DOI.
Hajra, R.: 2021b, Seasonal dependence of the Earth’s radiation belt – new insights. Ann. Geophys. 39, 181. DOI.
Hajra, R.: 2021c, Weakest solar cycle of the space age: a study on solar wind–magnetosphere energy coupling and geomagnetic activity. Solar Phys. 296, 33. DOI.
Hajra, R., Tsurutani, B.T.: 2018, Chapter 14 – Magnetospheric “killer” relativistic electron dropouts (REDs) and repopulation: a cyclical process. In: Buzulukova, N. (ed.) Extreme Events in Geospace, Elsevier, Amsterdam, 373. 978-0-12-812700-1. DOI.
Hajra, R., Tsurutani, B.T., Lakhina, G.S.: 2020, The complex space weather events of 2017 September. Astrophys. J. 899, 3. DOI.
Hajra, R., Echer, E., Tsurutani, B.T., Gonzalez, W.D.: 2013, Solar cycle dependence of High-Intensity Long-Duration Continuous AE Activity (HILDCAA) events, relativistic electron predictors? J. Geophys. Res. 118, 5626. DOI.
Hajra, R., Tsurutani, B.T., Echer, E., Gonzalez, W.D.: 2014a, Relativistic electron acceleration during high-intensity, long-duration, continuous AE activity (HILDCAA) events: solar cycle phase dependences. Geophys. Res. Lett. 41, 1876. DOI.
Hajra, R., Tsurutani, B.T., Echer, E., Gonzalez, W.D., Brum, C.G.M., Vieira, L.E.A., Santolik, O.: 2015b, Relativistic electron acceleration during HILDCAA events: are precursor CIR magnetic storms important? Earth Planets Space 67, 109. DOI.
Hajra, R., Tsurutani, B.T., Echer, E., Gonzalez, W.D., Santolik, O.: 2015a, Relativistic (E> 0.6, > 2.0, and > 4.0 MeV) electron acceleration at geosynchronous orbit during high-intensity, long-duration, continuous AE activity (HILDCAA) events. Astrophys. J. 799, 39. DOI.
Hajra, R., Tsurutani, B.T., Brum, C.G.M., Echer, E.: 2017, High-speed solar wind stream effects on the topside ionosphere over Arecibo: a case study during solar minimum. Geophys. Res. Lett. 44, 7607. DOI.
Hajra, R., Henri, P., Myllys, M., Héritier, K.L., Galand, M., Simon Wedlund, C., Breuillard, H., Behar, E., Edberg, N.J.T., Goetz, C., Nilsson, H., Eriksson, A.I., Goldstein, R., Tsurutani, B.T., Moré, J., Vallières, X., Wattieaux, G.: 2018, Cometary plasma response to interplanetary corotating interaction regions during 2016 June–September: a quantitative study by the Rosetta Plasma Consortium. Mon. Not. Roy. Astron. Soc. 480, 4544. DOI.
Hamilton, D.C., Gloeckler, G., Ipavich, F.M., Stüdemann, W., Wilken, B., Kremser, G.: 1988, Ring current development during the great geomagnetic storm of February 1986. J. Geophys. Res. 93, 14343. DOI.
Hundhausen, A.J., Gosling, J.T.: 1976, Solar wind structure at large heliocentric distances: an interpretation of Pioneer 10 observations. J. Geophys. Res. 81, 1436. DOI.
Illing, R.M.E., Hundhausen, A.J.: 1986, Disruption of a coronal streamer by an eruptive prominence and coronal mass ejection. J. Geophys. Res. 91, 10951. DOI.
Iyemori, T., Takeda, M., Nose, M., Odagi, Y., Toh, H.: 2010, Mid-latitude Geomagnetic Indices ASY and SYM for 2009 (Provisional). wdc.kugi.kyoto-u.ac.jp/aeasy/asy.pdf.
Jian, L.: 2008, PhD thesis, Univ. California Los Angeles.
Jian, L., Russell, C.T., Luhmann, J.G., Skoug, R.M.: 2006, Properties of stream interactions at one AU during 1995 – 2004. Solar Phys. 239, 337. DOI.
Jian, L.K., Russell, C.T., Luhmann, J.G., Skoug, R.M.: 2008b, Evolution of solar wind structures from 0.72 to 1 AU. Adv. Space Res. 41, 259. DOI.
Jian, L.K., Russell, C.T., Luhmann, J.G., Skoug, R.M., Steinberg, J.T.: 2008a, Stream interactions and interplanetary coronal mass ejections at 0.72 AU. Solar Phys. 249, 85. DOI.
Jian, L.K., Russell, C.T., Luhmann, J.G., MacNeice, P.J., Odstrcil, D., Riley, P., Linker, J.A., Skoug, R.M., Steinberg, J.T.: 2011, Comparison of observations at ACE and Ulysses with Enlil model results: stream interaction regions during carrington rotations 2016 – 2018. Solar Phys. 273, 179. DOI.
Jian, L.K., Luhmann, J.G., Russell, C.T., Galvin, A.B.: 2019, Solar Terrestrial Relations Observatory (STEREO) observations of stream interaction regions in 2007 – 2016: relationship with heliospheric current sheets, solar cycle variations, and dual observations. Solar Phys. 294, 31. DOI.
Kanekal, S.G., Baker, D.N., McPherron, R.L.: 2010, On the seasonal dependence of relativistic electron fluxes. Ann. Geophys. 28, 1101. DOI.
Krieger, A.S., Timothy, A.F., Roelof, E.C.: 1973, A coronal hole and its identification as the source of a high velocity solar wind stream. Solar Phys. 29, 505. DOI.
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. 274, 427. DOI.
Lockwood, M., Owens, M.J., Barnard, L.A., Haines, C., Scott, C.J., McWilliams, K.A., Coxon, J.C.: 2020, Semi-annual, annual and Universal Time variations in the magnetosphere and in geomagnetic activity: 1. Geomagnetic data. J. Space Weather Space Clim. 10, 23. DOI.
Marques de Souza Franco, A., Hajra, R., Echer, E., Bolzan, M.J.A.: 2021, Seasonal features of geomagnetic activity: a study on the solar activity dependence. Ann. Geophys. 39, 929. DOI.
Nakagawa, Y., Nozawa, S., Shinbori, A.: 2019, Relationship between the low-latitude coronal hole area, solar wind velocity, and geomagnetic activity during solar cycles 23 and 24. Earth Planets Space 71, 24. DOI.
Obridko, V.N., Ivanov, E.V., Özgüç, A., Kilcik, A., Yurchyshyn, V.B.: 2012, Coronal mass ejections and the index of effective solar multipole. Solar Phys. 281, 779. DOI.
Odstrčil, D., Pizzo, V.J.: 1999, Three-dimensional propagation of coronal mass ejections (CMEs) in a structured solar wind flow: 1. CME launched within the streamer belt. J. Geophys. Res. 104, 483. DOI.
Palmerio, E., Kilpua, E.K.J., Möstl, C., Bothmer, V., James, A.W., Green, L.M., Isavnin, A., Davies, J.A., Harrison, R.A.: 2018, Coronal magnetic structure of earthbound CMEs and in situ comparison. Space Weather 16, 442. DOI.
Pizzo, V.: 1978, A three-dimensional model of corotating streams in the solar wind, 1. Theoretical foundations. J. Geophys. Res. 83, 5563. DOI.
Richardson, I.G.: 2018, Solar wind stream interaction regions throughout the heliosphere. Liv. Rev. Solar Phys. 15, 1. DOI.
Richardson, I.G., Cliver, E.W., Cane, H.V.: 2000, Sources of geomagnetic activity over the solar cycle: relative importance of coronal mass ejections, high-speed streams, and slow solar wind. J. Geophys. Res. 105, 18203. DOI.
Richardson, I.G., Webb, D.F., Zhang, J., Berdichevsky, D.B., Biesecker, D.A., Kasper, J.C., Kataoka, R., Steinberg, J.T., Thompson, B.J., Wu, C.-C., Zhukov, A.N.: 2006, Major geomagnetic storms (Dst \({\leq}-100\) nT) generated by corotating interaction regions. J. Geophys. Res. 111, A07S09. DOI.
Richter, A.K., Luttrell, A.H.: 1986, Superposed epoch analysis of corotating interaction regions at 0.3 and 1.0 AU: a comparative study. J. Geophys. Res. 91, 5873. DOI.
Russell, C.T., McPherron, R.L.: 1973, Semiannual variation of geomagnetic activity. J. Geophys. Res. 78, 92. DOI.
Sabine, E.: 1852, VIII. On periodical laws discoverable in the mean effects of the larger magnetic disturbance. No. II. Phil. Trans. Roy. Soc. London 142, 103. DOI.
Schwabe, H.: 1844, Sonnen-Beobachtungen im Jahre 1843. Astron. Nachr. 21, 233.
Sheeley, N.R., Harvey, J.W.: 1981, Coronal holes, solar wind streams, and geomagnetic disturbances during 1978 and 1979. Solar Phys. 70, 237. DOI.
Sheeley, N.R., Asbridge, J.R., Bame, S.J., Harvey, J.W.: 1977, A pictorial comparison of interplanetary magnetic field polarity, solar wind speed, and geomagnetic disturbance index during the sunspot cycle. Solar Phys. 52, 485. DOI.
Shelley, E.G., Johnson, R.G., Sharp, R.D.: 1972, Satellite observations of energetic heavy ions during a geomagnetic storm. J. Geophys. Res. 77, 6104. DOI.
Siscoe, G..L.: 1972, Structure and orientations of solar-wind interaction fronts: Pioneer 6. J. Geophys. Res. 77, 27. DOI.
Smith, E.J., Wolfe, J.H.: 1976, Observations of interaction regions and corotating shocks between one and five AU: Pioneers 10 and 11. Geophys. Res. Lett. 3, 137. DOI.
Snyder, C.W., Neugebauer, M., Rao, U.R.: 1963, The solar wind velocity and its correlation with cosmic-ray variations and with solar and geomagnetic activity. J. Geophys. Res. 68, 6361. DOI.
Tanskanen, E.I., Pulkkinen, T.I., Viljanen, A., Mursula, K., Partamies, N., Slavin, J.A.: 2011, From space weather toward space climate time scales: substorm analysis from 1993 to 2008. J. Geophys. Res. 116, A00I34. DOI.
Tsurutani, B.T., Gonzalez, W.D.: 1987, The cause of high-intensity long-duration continuous AE activity (HILDCAAs): interplanetary Alfvén wave trains. Planet. Space Sci. 35, 405. DOI.
Tsurutani, B.T., Ho, C.M., Arballo, J.K., Goldstein, B.E., Balogh, A.: 1995, Large amplitude IMF fluctuations in corotating interaction regions: Ulysses at midlatitudes. Geophys. Res. Lett. 22, 3397. DOI.
Tsurutani, B.T., Gonzalez, W.D., Gonzalez, A.L.C., Guarnieri, F.L., Gopalswamy, N., Grande, M., Kamide, Y., Kasahara, Y., Lu, G., Mann, I., McPherron, R., Soraas, F., Vasyliunas, V.: 2006, Corotating solar wind streams and recurrent geomagnetic activity: a review. J. Geophys. Res. 111, A07S01. DOI.
Tsurutani, B.T., Hajra, R., Echer, E., Gonzalez, W.D., Santolik, O.: 2016b, Predicting magnetospheric relativistic > 1 MeV electrons. NASA Tech Briefs 40, 20. www.techbriefs.com/component/content/article/ntb/tech-briefs/software/24815.
Tsurutani, B.T., Hajra, R., Tanimori, T., Takada, A., Remya, B., Mannucci, A.J., Lakhina, G.S., Kozyra, J.U., Shiokawa, K., Lee, L.C., Echer, E., Reddy, R.V., Gonzalez, W.D.: 2016a, Heliospheric plasma sheet (HPS) im**ement onto the magnetosphere as a cause of relativistic electron dropouts (REDs) via coherent EMIC wave scattering with possible consequences for climate change mechanisms. J. Geophys. Res. 121, 10130. DOI.
Wang, H., Lühr, H.: 2007, Seasonal-longitudinal variation of substorm occurrence frequency: evidence for ionospheric control. Geophys. Res. Lett. 34, L07104. DOI.
Wanliss, J.A., Showalter, K.M.: 2006, High-resolution global storm index: Dst versus SYM-H. J. Geophys. Res. 111, A02202. DOI.
Webb, D.F., Howard, R.A.: 1994, The solar cycle variation of coronal mass ejections and the solar wind mass flux. J. Geophys. Res. 99, 4201. DOI.
Williams, D.J.: 1987, Ring current and radiation belts. Rev. Geophys. 25, 570. DOI.
Yurchyshyn, V., Hu, Q., Lep**, R.P., Lynch, B.J., Krall, J.: 2007, Orientations of LASCO Halo CMEs and their connection to the flux rope structure of interplanetary CMEs. Adv. Space Res. 40, 1821. DOI.
Zhang, Y., Sun, W., Feng, X.S., Deehr, C.S., Fry, C.D., Dryer, M.: 2008, Statistical analysis of corotating interaction regions and their geoeffectiveness during solar cycle 23. J. Geophys. Res. 113, A08106. DOI.
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The work of R. Hajra is funded by the Science and Engineering Research Board (SERB, grant no. SB/S2/RJN-080/2018), a statutory body of the Department of Science and Technology (DST), Government of India through the Ramanujan Fellowship. We would like to thank the reviewer for extremely valuable suggestions that substantially improved the manuscript.
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Appendix
Table 3 presents a catalog of all CIRs identified from January 2008 through December 2019. The approximate start and end times are given as the day of the year. The table is available in the Electronic Supplementary Material.
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Hajra, R., Sunny, J.V. Corotating Interaction Regions during Solar Cycle 24: A Study on Characteristics and Geoeffectiveness. Sol Phys 297, 30 (2022). https://doi.org/10.1007/s11207-022-01962-1
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DOI: https://doi.org/10.1007/s11207-022-01962-1