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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
2021-10-26 05:05 37.3 74.0 29.8 2.7 284 3.1 275 24.434 0.0 0.00
2021-10-26 05:00 37.2 76.3 30.4 3.0 284 4.4 305 24.438 0.0 0.00
2021-10-26 04:55 36.5 76.3 29.7 3.6 304 5.2 301 24.421 0.0 0.00
2021-10-26 04:50 36.2 76.3 29.5 2.7 321 4.3 327 24.428 0.0 0.00
2021-10-26 04:45 35.8 78.2 29.7 2.4 253 3.7 253 24.431 0.0 0.00
2021-10-26 04:40 35.2 80.0 29.7 4.0 253 5.1 245 24.437 0.0 0.00
2021-10-26 04:35 35.3 78.8 29.4 3.1 237 3.8 269 24.445 0.0 0.00
2021-10-26 04:30 35.8 76.7 29.2 1.6 273 3.1 273 24.447 0.0 0.00
2021-10-26 04:25 36.5 74.8 29.2 2.7 1 3.8 1 24.444 0.0 0.00
2021-10-26 04:20 36.0 75.3 29.0 0.2 23 0.9 39 24.447 0.0 0.00
2021-10-26 04:15 36.5 72.0 28.3 0.8 39 1.8 39 24.450 0.0 0.00
2021-10-26 04:10 37.0 71.5 28.6 0.5 30 1.1 30 24.456 0.0 0.00
2021-10-26 04:05 36.6 75.8 29.7 0.6 24 1.8 36 24.459 0.0 0.00
2021-10-26 04:00 37.4 72.1 29.3 1.5 256 3.2 259 24.461 0.0 0.00
2021-10-26 03:55 38.2 70.4 29.5 1.5 300 2.8 300 24.464 0.0 0.00
2021-10-26 03:50 37.5 73.2 29.7 2.7 310 3.3 352 24.461 0.0 0.00
2021-10-26 03:45 36.9 74.5 29.6 1.7 319 2.7 319 24.459 0.0 0.00
2021-10-26 03:40 38.2 72.4 30.1 1.6 348 3.6 30 24.458 0.0 0.00
2021-10-26 03:35 38.8 71.4 30.3 3.3 27 4.1 27 24.462 0.0 0.00
2021-10-26 03:30 37.9 70.9 29.3 3.6 341 3.9 0 24.466 0.0 0.00
2021-10-26 03:25 36.4 77.1 29.9 2.7 352 4.0 348 24.470 0.0 0.00
2021-10-26 03:20 36.4 75.8 29.5 1.7 261 3.1 259 24.472 0.0 0.00
2021-10-26 03:15 36.0 75.4 29.0 2.0 274 4.1 351 24.478 0.0 0.00
2021-10-26 03:10 36.3 75.3 29.2 3.6 346 4.6 347 24.477 0.0 0.00
2021-10-26 03:05 37.2 72.5 29.2 4.6 332 5.0 12 24.475 0.0 0.00
2021-10-26 03:00 37.5 72.7 29.5 3.5 15 5.0 15 24.474 0.0 0.00
2021-10-26 02:55 39.1 68.3 29.5 1.9 12 2.5 23 24.478 0.0 0.00
2021-10-26 02:50 40.2 67.5 30.3 2.5 12 3.2 11 24.483 0.0 0.00
2021-10-26 02:45 40.7 66.5 30.4 2.7 20 3.9 33 24.485 0.0 0.00
2021-10-26 02:40 40.2 67.7 30.4 1.0 28 3.5 25 24.491 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
2021-10-26 05:05 2.9 74.0 -1.2 1.2 284 1.4 275 827.43 0.0 0.00
2021-10-26 05:00 2.9 76.3 -0.9 1.4 284 2.0 305 827.58 0.0 0.00
2021-10-26 04:55 2.5 76.3 -1.3 1.6 304 2.3 301 826.98 0.0 0.00
2021-10-26 04:50 2.4 76.3 -1.4 1.2 321 1.9 327 827.22 0.0 0.00
2021-10-26 04:45 2.1 78.2 -1.3 1.1 253 1.6 253 827.32 0.0 0.00
2021-10-26 04:40 1.8 80.0 -1.3 1.8 253 2.3 245 827.53 0.0 0.00
2021-10-26 04:35 1.8 78.8 -1.4 1.4 237 1.7 269 827.80 0.0 0.00
2021-10-26 04:30 2.1 76.7 -1.6 0.7 273 1.4 273 827.86 0.0 0.00
2021-10-26 04:25 2.5 74.8 -1.5 1.2 1 1.7 1 827.77 0.0 0.00
2021-10-26 04:20 2.2 75.3 -1.7 0.1 23 0.4 39 827.88 0.0 0.00
2021-10-26 04:15 2.5 72.0 -2.0 0.3 39 0.8 39 827.96 0.0 0.00
2021-10-26 04:10 2.8 71.5 -1.9 0.2 30 0.5 30 828.16 0.0 0.00
2021-10-26 04:05 2.5 75.8 -1.3 0.3 24 0.8 36 828.29 0.0 0.00
2021-10-26 04:00 3.0 72.1 -1.5 0.7 256 1.4 259 828.35 0.0 0.00
2021-10-26 03:55 3.5 70.4 -1.4 0.7 300 1.3 300 828.45 0.0 0.00
2021-10-26 03:50 3.1 73.2 -1.3 1.2 310 1.5 352 828.33 0.0 0.00
2021-10-26 03:45 2.7 74.5 -1.3 0.8 319 1.2 319 828.29 0.0 0.00
2021-10-26 03:40 3.5 72.4 -1.0 0.7 348 1.6 30 828.25 0.0 0.00
2021-10-26 03:35 3.8 71.4 -0.9 1.5 27 1.8 27 828.38 0.0 0.00
2021-10-26 03:30 3.3 70.9 -1.5 1.6 341 1.8 0 828.51 0.0 0.00
2021-10-26 03:25 2.4 77.1 -1.2 1.2 352 1.8 348 828.64 0.0 0.00
2021-10-26 03:20 2.5 75.8 -1.4 0.8 261 1.4 259 828.70 0.0 0.00
2021-10-26 03:15 2.2 75.4 -1.7 0.9 274 1.8 351 828.91 0.0 0.00
2021-10-26 03:10 2.4 75.3 -1.5 1.6 346 2.0 347 828.88 0.0 0.00
2021-10-26 03:05 2.9 72.5 -1.5 2.0 332 2.2 12 828.84 0.0 0.00
2021-10-26 03:00 3.1 72.7 -1.4 1.6 15 2.2 15 828.77 0.0 0.00
2021-10-26 02:55 3.9 68.3 -1.4 0.9 12 1.1 23 828.91 0.0 0.00
2021-10-26 02:50 4.5 67.5 -1.0 1.1 12 1.4 11 829.08 0.0 0.00
2021-10-26 02:45 4.8 66.5 -0.9 1.2 20 1.8 33 829.15 0.0 0.00
2021-10-26 02:40 4.5 67.7 -0.9 0.4 28 1.5 25 829.36 0.0 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

Data Assimilation (DA)

Team Members

Team Publications

  • Quantification of optimal choices of parameters in lognormal variational data assimilation and their chaotic behavior

The future state of a dynamical model depends on control parameters such as initial conditions, model errors, empirical parameters of the model, and boundary conditions. Insufficient knowledge of any of the former can lead to prediction uncertainty, which implies a probabilistic nature of the problem. The chaotic nature of nonlinear dynamical systems in weather and climate, and in geosciences in general, confirms the fundamentally probabilistic character of dynamical systems. Information about the dynamical state and its uncertainty is collected from observations. Blending the information from observations with information from dynamical models requires a coordinated effort in several areas of Physics and Mathematics: Probability Theory, Estimation Theory, Control Theory, Nonlinear Dynamics, and Chaos/Information Theory. Since we are primarily interested in geosciences applications to high-dimensional dynamical systems, the computational component of the problem is also of great importance to our robejectives. Our research is encompassing all the formerly mentioned disciplines with the goal of developing a general methodology for uncertainty estimation of dynamical systems.

 

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