The PRIMET Horizontal Radiation Shield Comparison (PHRSC) experiment compares the difference between the air temperature measurements of a reference temperature sensor inside a fan aspirated radiation shield and temperature sensors located inside passively aspirated radiation shields including a cotton region shelter, Gill multi-plate shield, and a custom-fabricated model. Observed variables include air temperature, wind speed, and incoming and reflected solar radiation. Data was collected in the field between 2010 and 2017 at the Primary Meteorological Station (PRIMET) at H.J. Andrews Experimental Forest, located in Oregon’s Western Cascades (44.21, -122.26, elevation 430m).
Adam M Kennedy, Christopher Daly, Frederick A. Bierlmaier, Greg M Cohn, John Moreau, Mark D Schulze, Sherri L. Johnson, Stephanie A Schmidt
To examine the measurement differences between air temperature instruments that are using the same sensor but different radiation shields. These measurement differences are examined for various temperature statistics (average, minimum, maximum) at varying temporal resolutions. This information will help researchers understand the magnitude of measurement bias associated with instruments that have been used to record air temperature at H.J. Andrews meteorological stations over time. This bias can have implications during analysis when air temperature data from different instruments is combined into one dataset without accounting for differences between air temperature methods.