“…Seasonality of precipitation also varies from east to west in the Mojave Desert (Rowlands et al, 1982), with different regions experiencing different ratios of winter versus summer precipitation (Rowlands, 1995;Hereford et al, 2004Hereford et al, , 2006. Longitude 117 W, near Barstow, California has been cited as the general dividing line between winter-dominated precipitation to the west and bimodal winter/summer precipitation to the east (Hereford et al, 2006).…”