Christman Field Latest Observations
Date Time
MST
Temp
°F
RH
%
DewPt
°F
Wind
mph
Dir
°
Gust
mph
Dir
°
Press
in Hg
Solar
W/m^2
Prec
in
2020-06-02 08:30 85.1 18.9 38.1 5.1 337 8.5 350 24.940 744.2 0.00
2020-06-02 08:25 84.8 19.7 39.0 4.8 13 8.3 326 24.937 644.8 0.00
2020-06-02 08:20 84.3 19.9 38.9 5.0 314 6.9 304 24.936 840.0 0.00
2020-06-02 08:15 82.6 20.9 38.6 5.1 332 7.4 349 24.936 918.0 0.00
2020-06-02 08:10 80.3 26.4 42.7 3.6 354 5.6 336 24.939 639.4 0.00
2020-06-02 08:05 79.4 28.8 44.2 3.6 4 5.8 8 24.939 426.1 0.00
2020-06-02 08:00 79.7 28.7 44.4 4.8 29 5.7 19 24.938 329.5 0.00
2020-06-02 07:55 80.5 25.1 41.5 6.7 28 8.2 352 24.938 391.0 0.00
2020-06-02 07:50 80.2 24.0 40.1 7.9 341 9.8 355 24.938 425.3 0.00
2020-06-02 07:45 80.9 24.0 40.8 8.4 348 12.9 0 24.938 495.2 0.00
2020-06-02 07:40 80.2 21.8 37.8 6.5 3 12.7 3 24.936 574.8 0.00
2020-06-02 07:35 79.6 27.1 42.8 6.7 26 9.6 23 24.935 527.2 0.00
2020-06-02 07:30 79.1 27.7 43.0 7.4 41 11.0 353 24.935 511.1 0.00
2020-06-02 07:25 78.1 28.9 43.3 8.2 352 10.2 349 24.934 485.2 0.00
2020-06-02 07:20 77.1 27.6 41.1 8.2 0 10.3 43 24.934 453.6 0.00
2020-06-02 07:15 76.5 32.7 45.1 9.1 42 12.0 52 24.933 478.6 0.00
2020-06-02 07:10 77.3 31.8 45.0 6.2 58 9.4 48 24.929 466.7 0.00
2020-06-02 07:05 77.7 32.4 45.9 5.7 11 7.8 327 24.926 404.7 0.00
2020-06-02 07:00 77.1 32.0 45.0 6.7 329 9.3 318 24.925 390.8 0.00
2020-06-02 06:55 75.5 27.9 40.0 8.9 322 12.5 298 24.922 364.2 0.00
2020-06-02 06:50 70.7 29.8 37.6 9.3 299 12.5 308 24.920 313.8 0.00
2020-06-02 06:45 69.5 37.0 42.1 7.6 315 9.5 294 24.920 95.0 0.00
2020-06-02 06:40 71.0 34.3 41.4 7.9 295 11.8 296 24.918 74.0 0.00
2020-06-02 06:35 71.5 28.1 36.8 10.8 304 12.8 305 24.916 71.3 0.00
2020-06-02 06:30 71.8 28.0 37.0 10.9 289 13.6 296 24.914 65.1 0.00
2020-06-02 06:25 72.2 27.5 36.8 12.8 302 14.8 306 24.912 65.0 0.00
2020-06-02 06:20 72.8 27.7 37.5 12.6 299 15.2 300 24.912 70.2 0.00
2020-06-02 06:15 73.7 28.4 39.0 13.1 298 18.7 297 24.912 176.2 0.00
2020-06-02 06:10 70.8 32.4 39.8 11.2 296 13.8 290 24.913 230.8 0.00
2020-06-02 06:05 69.7 38.6 43.4 9.9 308 12.1 310 24.912 181.7 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
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