Observing "weather" (stratospheric temp.) with cosmic rays Answered
An article in New Scientist reports on an analysis of cosmic ray muon data from the MINOS underground detector, which correlates with "sudden" (24-hour timescale) temperature changes in the stratosphere.
The original article in Geophysical Research Letters gives you a good flavor for how this kind of analysis is actually done, and written up for publication.
The figure below (Figure 3 of the article) shows the beautiful correlation between the temperature (5-day running average in blue) as measured by sounding balloons, and the muon rate in MINOS (also 5-day running average, red band with uncertainties). The alignment of the two curves is obviously not known a priori. The exact numerical calibration between muon counts (red, right scale) and temperature (blue, left scale) is a fitted output of the analysis, not an input.
To me, it's just kind of neat that particle physics can relate so sharply to some "real world" large-scale properties.