1973-74 rainfall was repeated in 2010-11

摘要

Australia had a another wet year in 2011, Figure 1, with data collected by the Bureau of Meteorology showing that the Australian mean rainfall total for 2011 was 699 millimetres (234mm above the long-term average of 465mm), placing the year at the third-wettest since comparable records began in 1900. Back-to-back La Nina events led to a two-year rainfall total of 1402mm, which is the second-highest total on record behind 1407mm in 1973-74. Another interesting statistic is the decadal pattern. Contrary to popular belief, across the continent there is an increasing trend, Figure 2.