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Christman Field Latest Observations
Select Units
Date Time
MST
Temp
°F
RH
%
DewPt
°F
Wind
mph
Dir
°
Gust
mph
Dir
°
Press
in Hg
Solar
W/m^2
Prec
in
2022-12-01 03:35 11.3 88.7 8.6 1.3 233 4.5 1 24.660 0.2 0.00
2022-12-01 03:30 10.8 89.5 8.4 4.6 1 6.4 343 24.663 0.2 0.00
2022-12-01 03:25 9.7 88.4 6.9 2.5 303 5.0 295 24.662 0.2 0.00
2022-12-01 03:20 9.6 87.1 6.5 2.1 117 2.8 67 24.663 0.2 0.00
2022-12-01 03:15 10.3 85.9 6.9 4.4 64 5.7 36 24.663 0.2 0.00
2022-12-01 03:10 11.6 85.7 8.2 3.0 5 6.6 344 24.660 0.2 0.00
2022-12-01 03:05 13.0 85.4 9.5 3.1 138 4.3 157 24.659 0.2 0.00
2022-12-01 03:00 14.4 84.7 10.7 3.4 156 5.0 122 24.662 0.2 0.00
2022-12-01 02:55 12.8 90.4 10.6 4.1 120 6.2 104 24.663 0.2 0.00
2022-12-01 02:50 13.1 84.1 9.2 2.2 36 4.4 174 24.662 0.1 0.00
2022-12-01 02:45 13.2 88.4 10.4 4.7 165 5.8 139 24.663 0.1 0.00
2022-12-01 02:40 12.9 87.6 9.9 2.8 153 4.8 219 24.663 0.1 0.00
2022-12-01 02:35 12.0 88.9 9.3 3.0 202 5.4 234 24.662 0.1 0.00
2022-12-01 02:30 14.1 82.1 9.7 4.2 235 5.9 231 24.666 0.2 0.00
2022-12-01 02:25 13.5 91.0 11.3 2.7 244 4.9 244 24.670 0.2 0.00
2022-12-01 02:20 10.4 91.6 8.4 3.0 5 5.7 330 24.671 0.2 0.00
2022-12-01 02:15 11.2 85.3 7.6 3.4 296 6.7 128 24.661 0.1 0.00
2022-12-01 02:10 11.0 91.6 9.0 6.2 131 7.9 201 24.664 0.2 0.00
2022-12-01 02:05 12.4 83.5 8.3 3.5 151 5.5 70 24.660 0.1 0.00
2022-12-01 02:00 12.2 88.9 9.6 3.4 130 4.6 146 24.662 0.2 0.00
2022-12-01 01:55 11.3 88.2 8.5 3.1 127 4.3 182 24.658 0.2 0.00
2022-12-01 01:50 10.4 86.6 7.2 2.1 258 4.0 245 24.660 0.2 0.00
2022-12-01 01:45 10.4 88.4 7.7 2.1 262 3.6 194 24.662 0.1 0.00
2022-12-01 01:40 9.9 89.1 7.4 4.0 194 5.0 192 24.664 0.1 0.00
2022-12-01 01:35 9.7 87.2 6.7 2.1 112 4.5 78 24.664 0.1 0.00
2022-12-01 01:30 10.6 85.5 7.1 1.2 327 3.3 112 24.664 0.1 0.00
2022-12-01 01:25 10.7 88.0 7.8 5.0 99 8.8 136 24.662 0.1 0.00
2022-12-01 01:20 10.2 87.9 7.3 2.2 112 5.3 234 24.661 0.1 0.00
2022-12-01 01:15 10.7 86.9 7.5 2.8 232 6.4 236 24.664 0.1 0.00
2022-12-01 01:10 10.8 88.9 8.2 2.7 149 4.3 149 24.667 0.0 0.00
Date Time
MST
Temp
°C
RH
%
DewPt
°C
Wind
m/s
Dir
°
Gust
m/s
Dir
°
Press
hPa
Solar
W/m^2
Prec
mm
2022-12-01 03:35 -11.5 88.7 -13.0 0.6 233 2.0 1 835.08 0.2 0.00
2022-12-01 03:30 -11.8 89.5 -13.1 2.1 1 2.9 343 835.18 0.2 0.00
2022-12-01 03:25 -12.4 88.4 -13.9 1.1 303 2.2 295 835.16 0.2 0.00
2022-12-01 03:20 -12.4 87.1 -14.2 0.9 117 1.3 67 835.17 0.2 0.00
2022-12-01 03:15 -12.1 85.9 -14.0 2.0 64 2.6 36 835.20 0.2 0.00
2022-12-01 03:10 -11.3 85.7 -13.2 1.4 5 3.0 344 835.08 0.2 0.00
2022-12-01 03:05 -10.5 85.4 -12.5 1.4 138 1.9 157 835.07 0.2 0.00
2022-12-01 03:00 -9.8 84.7 -11.9 1.5 156 2.3 122 835.15 0.2 0.00
2022-12-01 02:55 -10.6 90.4 -11.9 1.8 120 2.8 104 835.17 0.2 0.00
2022-12-01 02:50 -10.5 84.1 -12.6 1.0 36 2.0 174 835.14 0.1 0.00
2022-12-01 02:45 -10.4 88.4 -12.0 2.1 165 2.6 139 835.20 0.1 0.00
2022-12-01 02:40 -10.6 87.6 -12.3 1.3 153 2.1 219 835.18 0.1 0.00
2022-12-01 02:35 -11.1 88.9 -12.6 1.3 202 2.4 234 835.15 0.1 0.00
2022-12-01 02:30 -9.9 82.1 -12.4 1.9 235 2.6 231 835.30 0.2 0.00
2022-12-01 02:25 -10.3 91.0 -11.5 1.2 244 2.2 244 835.44 0.2 0.00
2022-12-01 02:20 -12.0 91.6 -13.1 1.4 5 2.5 330 835.46 0.2 0.00
2022-12-01 02:15 -11.6 85.3 -13.5 1.5 296 3.0 128 835.13 0.1 0.00
2022-12-01 02:10 -11.7 91.6 -12.8 2.8 131 3.5 201 835.23 0.2 0.00
2022-12-01 02:05 -10.9 83.5 -13.1 1.6 151 2.5 70 835.09 0.1 0.00
2022-12-01 02:00 -11.0 88.9 -12.4 1.5 130 2.0 146 835.14 0.2 0.00
2022-12-01 01:55 -11.5 88.2 -13.1 1.4 127 1.9 182 835.01 0.2 0.00
2022-12-01 01:50 -12.0 86.6 -13.8 1.0 258 1.8 245 835.09 0.2 0.00
2022-12-01 01:45 -12.0 88.4 -13.5 1.0 262 1.6 194 835.14 0.1 0.00
2022-12-01 01:40 -12.3 89.1 -13.7 1.8 194 2.2 192 835.21 0.1 0.00
2022-12-01 01:35 -12.4 87.2 -14.1 1.0 112 2.0 78 835.23 0.1 0.00
2022-12-01 01:30 -11.9 85.5 -13.8 0.5 327 1.5 112 835.23 0.1 0.00
2022-12-01 01:25 -11.8 88.0 -13.4 2.2 99 3.9 136 835.17 0.1 0.00
2022-12-01 01:20 -12.1 87.9 -13.7 1.0 112 2.4 234 835.12 0.1 0.00
2022-12-01 01:15 -11.9 86.9 -13.6 1.2 232 2.8 236 835.23 0.1 0.00
2022-12-01 01:10 -11.8 88.9 -13.2 1.2 149 1.9 149 835.32 0.0 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

Ham, Jay

Jay Ham

CIRA Fellow

Job Title:

Professor, Department of Soil and Crop Sciences, Colorado State University

Email Address:

About Me:


Research Interests:

Environmental physics and micrometeorology; Effects of animal feeding operations on air and water quality; Long-term CO2 and H2O flux monitoring by eddy covariance; Global climate change and field-scale carbon budgets; Instrumentation development; Remote sensing; Soil-plant-water relations; Irrigation management

 

Current Research Projects:

(1) Water, Carbon, and Global Climate Change: Starting in 1997, I have operated a network of long-term eddy covariance sites as part of DOE’s Ameriflux program. These towers, which provided year-round hourly measurements of carbon flux and ET, have been deployed on prairies, a cedar forest, and at livestock operations. New research is aimed at characterizing spatial variations in ET and net carbon exchange so that research done at tower sites can be scaled up to make watershed- and regional-scale estimates of water and carbon cycles.

(2) Research on Animal Feeding Operations: My research group has developed instrumentation to measure ammonia/ammonium (NHx) fluxes from feedlots using a micrometeorological technique called relaxed eddy accumulation (REA). Ultimately, research could lead to improved practices for reducing NHx losses by allowing us to measure directly how a change in diet or waste management affects emissions. Anaerobic lagoons are widely used at AFOs to store and treat waste. My research team has been a leader in developing methods for measuring seepage losses and predicting the effects on groundwater quality. (3) Instrumentation Development

I am always looking to improve our measurement capabilities such as new sensor technologies, including sap flow gauges, soil moisture probes, various chamber designs for measuring whole-canopy gas exchange, techniques for measuring seepage and gas fluxes from animal waste lagoons, new micrometeorological techniques for measuring fluxes of NH3 and other trace gases from cattle feedlots, and more recently the development of low-cost unmanned aerial vehicles (UAVs) for remote sensing of vegetation