Xie-Arkin observations of climatological monthly mean precipitation for the period 1982-98. (a) Jan. (b) Apr. (c) Jul. (d) Oct. Contour interval 2 mm/day. Shaded above 4.Observed January fluxes of (a) evaporation, contour interval 20 W/m*mXie-Arkin observations of monthly mean precipitation on the equator through the period 1982-98. Contour interval 2 mm/day. Shaded above 2 and below -2ENSO observational composite precipitation differences. Three warm events (1986/87, 1991/92, 1994/95) minus three cold events (1983/84, 1988/89, 1995/96). (a) Northern winter (Dec-Feb), (b) summer (Jun-Aug).
