FIG. 1. Spatial distribution of the accumulated monthly precipitation (in percentage relative to the 1951–2008 norm) during the hydrological year 2009/10 (i.e., between May 2009 and April 2010). To avoid misleading results over dry areas, only grid points with climatological accumulated precipitation above 240 mm (i.e., 20 mm month21) are shown. Black boxes approximately delimit regions with maximum deficit in accumulated precipitation and they are referred to as N and SW China in the text.
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