Reports

Contents

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