I reworked an old application last week that I use to generate a simple six hourly North Atlantic Oscillation from NCEPNCEP The United States National Centers for Environmental Prediction (NCEP) delivers national and global weather, water, climate and space weather guidance, forecasts, warnings and analyses to its Partners and External User Communities. reanalysis data that I download. It’s simple, nothing complicated using geopotential heights at 500 hPahPa A Hectopascal is the SI unit of pressure and identical to the Millibar or anything like that, just the pressure difference between 65N 25W and 37.5N 25W. A well as plotting the NAONAO The North Atlantic Oscillation (NAO) is a weather phenomenon over the North Atlantic Ocean of fluctuations in the difference of atmospheric pressure at sea level (SLP) between the Icelandic Low and the Azores High. Through fluctuations in the strength of the Icelandic Low and the Azores High, it controls the strength and direction of westerly winds and location of storm tracks across the North Atlantic. I also add charts of the daily mean anomaly from the CETCET Central England Temperature series, along with the England Wales rainfall from the daily UKPUKP UKP is a gridded datasets of UK regional precipitation. series, both of which I download from the UKMOUKMO The Meteorological Office is the United Kingdom's national weather service. It is an executive agency and trading fund of the Department for Business, Energy and Industrial Strategy. As you can see in winter at least there is a strong correlation between the NAO and CET & UKP. I’ll add more viewers to examine the correlation, so much to do, and so little time, as the Joker said.