@Article{RawatEcheGonz:2018:HoDiAr,
               author = "Rawat, Rashmi and Echer, Ezequiel and Gonzalez Alarcon, Walter 
                         Dem{\'e}trio",
          affiliation = "{National Centre for Antarctic and Ocean Research} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "How Different Are the Solar Wind-Interplanetary Conditions and the 
                         Consequent Geomagnetic Activity During the Ascending and Early 
                         Descending Phases of the Solar Cycles 23 and 24?",
              journal = "Journal of Geophysical Research: Space Physics",
                 year = "2018",
               volume = "123",
               number = "8",
                pages = "6621--6638",
                month = "Aug.",
             abstract = "The current work investigates the possible solar 
                         wind-interplanetary (SW-IP) drivers of geomagnetic storms during 
                         the longest period (ascending to early descending phases) of the 
                         ongoing solar cycle (24). We present a comparative analysis 
                         between the two consecutive solar cycles (SCs) 23 and 24. Both the 
                         cycles exhibited dual peak feature as observed in the smoothed 
                         sunspot numbers SSNsmoothed. For both the cycles, second peak in 
                         the SSNsmoothed is higher than the first one as exhibited in the 
                         revised SSNsmoothed version. During the entire interval between 
                         the ascending to early descending phases (December 2008 to 
                         December 2016) of SC-24, the southward directed Bz and the 
                         dawn-dusk electric field (Ey) were consistently weaker as compared 
                         to that during similar interval of SC-23 (May 1996 to July 2004). 
                         The geomagnetic field response represented by Dst index 
                         concurrently exhibited similar variation patterns during both the 
                         periods. A striking reduction in the intense storm occurrence rate 
                         by \∼75% was observed during the considered period of the 
                         current solar cycle in comparison to the previous cycle. However, 
                         moderate storm occurrence was reduced only by 32% in SC-24 as 
                         compared to SC-23, which could be attributed to the dominance of 
                         corotating interaction regions during SC-24. No significant 
                         difference is found between the intense storm rates around the 
                         vernal and autumnal equinoxes in cycle 24, whereas distinct 
                         autumnal equinoctial dominance is evident for cycle 23. Further, 
                         within each cycle, there is no significant difference in the 
                         moderate storm rates around vernal and autumnal equinoxes.",
                  doi = "10.1029/2018JA025683",
                  url = "http://dx.doi.org/10.1029/2018JA025683",
                 issn = "2169-9402",
             language = "en",
           targetfile = "rawat_how.pdf",
        urlaccessdate = "27 abr. 2024"
}