Silk Road pattern

EOF1 of July monthly 200-hPa meridional-wind anomalies over 30–60°N, 30–130°E, projected daily year-round. Sign fixed so the largest loading is positive (no universal convention). — Kosaka et al. 2009, J. Meteor. Soc. Japan 87, 561–580, doi:10.2151/jmsj.87.561; Enomoto et al. 2003, Q. J. R. Meteorol. Soc. 129, 157–178