Anyone have good historical data for the Greenland blocking index (GBI), the Atlantic Ridge index (AR), Polar Cap Height (PCH)? I think with those values I could have some real fun in my data analysis project for this area. I already have the 4 big teleconnection index values daily going back to 1950. Daily weather records for the the complete history of almost every station that had reported at one time or another in about a 6 county area around South Central Pennsylvania Sent from my SM-S731U using Tapatalk