From MariachiWiki

After analysis of the data from the scintillators in the NSL to the available weahter data, there seems to be a correlation between barometric pressure and the intensity of cosmic rays. Other independent data already supports this fact. Research by two high school students support the correlation. Another researchhas shown similar correlation. The graphs below are plots of data from the University of Rochester Cosmic Ray Muon Detector and clearly illustrate the anticorrelation between surface muon rate and barometric pressure:

Data Analysis

The cosmic ray data used was from the scintillators from the NSL between April 21st and May 1st. The weather data was from Quality Controlled Local Climatological Data from NOAA at Islip.

• The cosmic ray data was first imported into Microsoft Excel
• Using excel, the amount of notable coincidences between the scintillators per hour was collected
• The number of coincideces in an hour was then compared to various meteorological indicators such as pressure, humidity, and temperature
• The data was then imported into Matlab
• The correlation coefficient was found using the "corrcoef" function.
• The correlation coefficient between the cosmic ray events and barometric pressure was -0.35