Comparison of modeled bow shock (dashed) and magnetopause (dot-dashed) for different solar wind parameters. The red lines indicate the bow shock and magnetopause under high Alfvénic Mach number (M_A = 20) and solar wind ram pressure (P_ram = 30 nPa) around August 7, 2013, 102000 UT, and the blue lines indicate it under low Alfvénic Mach number (M_A = 2) and solar wind ram pressure (P_ram = 5 nPa) around March 8, 2012, 201 000 UT. The solid black line shows the bow shock and magnetopause used in the S21 model based on the best-fit parameter from Winslow et al. (2013).