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Figure 11. Relationship of the Jul -Nov. SOI vs. District 71 Dec. -Mar. basin avg. precip. <br />Jul -Nov SOI us. Dec -Mar Precip for District 71 (% of normal precipitation) <br />PDO <br />MEI <br />SOI <br />Nino 3.4 <br />NAO <br />AMO <br />District 30 <br />X <br />X <br />X <br />X <br />District 32 <br />♦ <br />X <br />X <br />X <br />District 34 <br />X <br />X <br />• <br />X <br />X <br />X <br />X <br />• <br />• <br />• <br />-3.50 -3.00 -2.50 -2.00 -1.50 -1.00 -0.50 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 <br />However, there is still a non - random influence on precipitation from the Atlantic indices <br />(NAO and AMO). Despite all of the attention of the ENSO variables there appears to be <br />some steering influence offered by the Atlantic Ocean as well. <br />Table 4. Summary of single season Dec. -Mar. Precipitation/HCI Relationships for the San <br />Juan/Dolores basin (dark `X' indicates a relatively strong relationship and light A' indicates a <br />relatively weak relationship). <br />B - April to June Precipitation (single season) <br />For the sake of simplicity, all four Districts exhibit the same characteristics over <br />this period with the AMO and MEI/SOI exhibiting reasonable correlations. Districts 32 <br />and 34 have a net stronger relationship with these two variables than 30 and 71. The key <br />part to note in these relationships is likely to occur by cross- examining the AMO and <br />MEI/SOI. The purpose of the preceding recommendation is that the `general' <br />relationship of wet El Nino /drier La Nina and wet - AMO /dry + AMO is far from solid.. <br />19 <br />PDO <br />MEI <br />SOI <br />Nino 3.4 <br />NAO <br />AMO <br />District 30 <br />X <br />X <br />X <br />X <br />District 32 <br />X <br />X <br />X <br />X <br />District 34 <br />X <br />X <br />District 71 <br />X <br />X <br />X <br />X <br />B - April to June Precipitation (single season) <br />For the sake of simplicity, all four Districts exhibit the same characteristics over <br />this period with the AMO and MEI/SOI exhibiting reasonable correlations. Districts 32 <br />and 34 have a net stronger relationship with these two variables than 30 and 71. The key <br />part to note in these relationships is likely to occur by cross- examining the AMO and <br />MEI/SOI. The purpose of the preceding recommendation is that the `general' <br />relationship of wet El Nino /drier La Nina and wet - AMO /dry + AMO is far from solid.. <br />19 <br />