SH021-04
Comparing Solar Minimum 24/25 with Historical Solar Wind Records at 1 AU

Wednesday, 9 December 2020: 19:16
Virtual
Lan Jian1, Nat Gopalswamy1, Janet G Luhmann2 and Christopher T Russell3, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (3)University of California, Los Angeles, CA, United States
Recorded Presentation
Abstract:
Following the study of previous deep solar minimum 23/24 in Jian et al. (2011), we choose a one-year interval at each solar minimum from the beginning of the acquisition of solar wind measurements in the ecliptic plane and at 1 AU, to compare the solar and solar wind parameters at the most recent solar minimum 24/25 with previous solar minima. In addition, combining the continuous solar wind measurements near 1 AU from Wind/ACE and STEREO A/B missions, we survey and characterize the large-scale solar wind structures during 1995-2019, including slow-to-fast stream interaction regions (SIRs), interplanetary coronal mass ejections (ICMEs), and interplanetary shocks. We study their solar cycle variations comprehensively, focusing on the comparison of solar cycles 23 and 24, as well as the comparison of solar minima 22/23, 23/24, and 24/25. Through the study, we describe the long-term variations of space environment for other WHPI investigations.
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