Dominant modes of relationship between U.S. temperature and geomagnetic activityEigen-analysis is applied to a matrix of cross-correlation coefficients between the geomagnetic aa-index for 0 to 23-yr lag and the monthly mean temperature at 32 United States stations. About 75 percent of the relationship between the two fields is contained in three dominant modes. A secular trend (about 90 yr) and two 11-yr cycles dominate the mode time series. The month-to-month changes in the temperature anomaly patterns indicate a slow eddy-like motion to the east of the Continental Divide for all three dominant modes.
Document ID
19840031303
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Prohaska, J. T. (Solar Climatic Research Inst. Cambridge, MA, United States)
Willett, H. C. (Solar Climatic Research Institute Cambridge, MA, United States)