get_aao
Downloads AAO data returning a data.frame
get_aao()
data.frame
From http://www.cpc.noaa.gov/products/precip/CWlink/daily_ao_index/aao/aao.shtml: The daily AAO index is constructed by projecting the daily (00Z) 700mb height anomalies poleward of 20°S onto the loading pattern of the AAO. Please note that year-round monthly mean anomaly data have been used to obtain the loading pattern of the AAO. Since the AAO has the largest variability during the cold season, the loading pattern primarily captures characteristics of the cold season AAO pattern.
#> Date Year Month AAO #> 1 1979-01-01 1979 1 0.20876 #> 2 1979-02-01 1979 2 0.35626 #> 3 1979-03-01 1979 3 0.89918 #> 4 1979-04-01 1979 4 0.67758 #> 5 1979-05-01 1979 5 0.72374 #> 6 1979-06-01 1979 6 1.70000