Precipitation
Table 1 compares the anomalies produced by the three methods.
It shows that AN and QM always agree in the sign of the anomaly,
whereas WT differs in winter. The three methods agree in a
decrease of annual precipitation between 3% and 4%. They also
agree in a more important decrease of precipitation in summer
(between 12% and 16%). The differences are mainly found in winter,
where WT presents a positive anomaly whereas the other
two methods a negative one. In autumn WT presents no anomaly
and AN, in the other extreme, an anomaly of 6%.