These are supporting meteorological measurements for selectable sites. The surface reflaction is the upwelling visible irradiance measured by a downward looking pyranometer and is used primarily to indicate the presence of snow.


Graphs of the data are available for a time selection of a month or less. The graphs will be displayed along with a tabular view of the data used to create the graph. We also provide a feature to export the data to a file on your local computer in a comma delimited(CSV) format.


For any time duration greater than a month, use the end date option below. This will generate a data file that you can download to your local computer. Keep in mind a year's worth of data is about 14 megabytes, and will take almost a minute to generate.