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. 2024 Oct 8;14:23436. doi: 10.1038/s41598-024-74092-2

Table 1.

Relationship metrics of meteorological variables that are essential to calculating the Water Deficit Index (WDI) as measured by different weather stations at different locations.

Variables Number of observations Source X Source Y R2
Solar radiation (MJ m-1 day-1) 215 # CRS Pivot * CRS pivot ground 0.99
215 CRS Pivot + CRS weather station 0.99
1405 CRS pivot ground CRS weather station 0.99
1809 ! Production pivot 1 CRS weather station 0.98
1809 ^ Production pivot 2 CRS weather station 0.99
Wind speed (m/s) 215 CRS pivot CRS pivot ground 0.90
215 CRS pivot CRS weather station 0.70
1405 CRS pivot ground CRS weather station 0.87
1809 Production pivot 1 CRS weather station 0.78
1809 Production pivot 2 CRS weather station 0.72
Relative humidity (%) 215 CRS pivot CRS pivot ground 0.97
215 CRS pivot CRS weather station 0.95
1405 CRS pivot ground CRS weather station 0.95
1809 Production pivot 1 CRS weather station 0.96
1809 Production pivot 2 CRS weather station 0.94
Air temperature (°C) 215 CRS pivot CRS pivot ground 0.98
215 CRS pivot CRS weather station 0.96
1405 CRS pivot ground CRS weather station 0.99
1809 Production pivot 1 CRS weather station 0.98
1809 Production pivot 2 CRS weather station 0.97
Precipitation (mm) 215 CRS pivot CRS pivot ground 1.00
215 CRS pivot CRS weather station 0.92
1405 CRS pivot ground CRS weather station 0.94
1809 Production pivot 1 CRS weather station 0.85
1809 Production pivot 2 CRS weather station 0.46

The “CRS Weather Station” at the Chillicothe Research Station is a standard weather station, while data was collected using mini weather stations in all other cases.

#ClimaVue 50 mini weather station mounted on the pivot at Chillicothe with sensors at 4 m height from ground.

*ClimaVue 50 mini weather station mounted on the ground in a 90% ET replacement plot at Chillicothe with sensors at 2 m height from ground.

+Standard weather station at the Chillicothe Research Station located about 500 m from the study field with sensors at 2 m height from ground.

!Production Pivot 1 was located about 1.5 km from the standard weather station at Chillicothe.

^Production Pivot 2 was located about 5 km from the standard weather station at Chillicothe.