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Title: BC 4-way Comparison May 2017
Date:2017-05-10
Data File: BC_4way_compare_May2017.csv
Refers to:BC,2420,990181

From 2017-05-10 to 2017-05-25, two 4-way net radiometers were compared at the Boudin Corn site.  The existing net radiometer on the Bouldin Corn site is a relatively new Hukseflux NR01 sn 2420 (received 2015-09-28).  This was compared to an old Kipp & Zonen CNR1 sn 990181 (received1999-10-04).  This CNR1 had been on the original Sherman Island pasture site and the insulation on its cable had all rotted.  The cables were replaced in the lab with new cables before the comparison.

Table 1. Original sensor coefficients

Sensor NR01 uV/(W/m2) CNR1 uV/(W/m2)
SW_in 19.56 9.94
SW_out 16.38 9.96
LW_in 11.50 9.66
LW_out 13.15 9.58

Figure 1. Shortwave time series

Figure 2. Longwave time series

Regression Data

Residuals

Figure 3. Linear Regressions