22
SYSTEM
Figure 9 Corrected air temperature comparison with the aspirated
radiation shield using 1-minute measurement intervals
shows the results from the temperature correction compared to the aspirated
temperature, which shows data sampled at 1 min and not averaged over time. The estimated
accuracy of the air temperature measurement, based on two standard deviations (95%
confidence interval), is 0.42 °C. To provide an idea of how comparable the data are, a
concurrently tested temperature sensor in a radiation shield (typical measurement
approach) showed an accuracy of 0.66 °C, also based on a two-standard deviation estimate.
Thus, the temperature correction of the ATMOS 41 appears to give a better estimate of actual
air temperature than the generally accepted radiation shield technique.
NOTE: Without wind correction, the accuracy of the temperature measurement is ±2 °C.
