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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
2022-10-03 07:35 52.9 76.1 45.6 4.4 353 6.3 344 25.011 155.3 0.00
2022-10-03 07:30 52.3 80.0 46.3 3.3 344 4.6 341 25.010 198.0 0.00
2022-10-03 07:25 51.6 82.2 46.3 2.4 344 3.2 339 25.009 214.5 0.00
2022-10-03 07:20 50.8 85.0 46.4 2.4 20 3.5 7 25.008 210.9 0.00
2022-10-03 07:15 50.4 85.8 46.3 3.3 0 4.3 324 25.008 105.0 0.00
2022-10-03 07:10 50.3 85.9 46.2 4.6 321 5.0 322 25.007 73.2 0.00
2022-10-03 07:05 49.9 85.4 45.7 4.8 320 5.3 307 25.007 61.8 0.00
2022-10-03 07:00 49.1 88.2 45.7 4.1 304 5.1 304 25.007 77.9 0.00
2022-10-03 06:55 48.4 88.3 45.1 2.7 306 3.8 306 25.005 44.8 0.00
2022-10-03 06:50 48.0 89.0 44.9 1.8 320 2.4 308 25.003 43.1 0.00
2022-10-03 06:45 47.7 89.1 44.7 2.8 305 3.2 284 25.001 36.0 0.00
2022-10-03 06:40 47.4 88.7 44.3 3.3 290 3.6 278 24.999 30.5 0.00
2022-10-03 06:35 47.2 88.3 44.0 4.1 279 4.9 278 24.998 24.3 0.00
2022-10-03 06:30 47.2 87.9 43.8 2.6 259 2.9 248 24.996 15.5 0.00
2022-10-03 06:25 47.1 87.7 43.7 2.2 251 3.3 262 24.996 10.4 0.00
2022-10-03 06:20 47.5 87.6 44.0 2.2 262 3.3 259 24.996 7.0 0.00
2022-10-03 06:15 47.8 87.4 44.2 1.4 268 1.8 278 24.995 4.8 0.00
2022-10-03 06:10 47.9 87.0 44.3 1.1 284 1.4 280 24.995 3.2 0.00
2022-10-03 06:05 48.1 86.7 44.3 1.1 256 1.8 260 24.995 2.6 0.00
2022-10-03 06:00 48.0 87.8 44.5 1.1 296 1.3 296 24.995 1.6 0.00
2022-10-03 05:55 47.8 88.1 44.5 1.6 334 1.9 16 24.993 0.8 0.00
2022-10-03 05:50 47.8 88.3 44.5 0.8 17 1.6 326 24.992 0.4 0.00
2022-10-03 05:45 47.9 88.1 44.5 2.5 326 3.1 324 24.990 0.2 0.00
2022-10-03 05:40 48.1 87.8 44.6 2.6 321 2.9 322 24.989 0.0 0.00
2022-10-03 05:35 48.2 87.3 44.6 3.4 351 3.8 335 24.988 0.0 0.00
2022-10-03 05:30 48.1 87.5 44.5 4.5 331 5.7 323 24.988 0.0 0.00
2022-10-03 05:25 47.9 88.0 44.5 5.2 324 6.0 315 24.988 0.0 0.00
2022-10-03 05:20 47.8 88.4 44.5 3.7 317 4.1 325 24.985 0.0 0.00
2022-10-03 05:15 47.7 89.0 44.6 4.4 321 5.0 307 24.985 0.0 0.00
2022-10-03 05:10 47.4 89.2 44.4 5.8 308 6.6 320 24.985 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
2022-10-03 07:35 11.6 76.1 7.6 2.0 353 2.8 344 846.97 155.3 0.00
2022-10-03 07:30 11.3 80.0 8.0 1.5 344 2.1 341 846.93 198.0 0.00
2022-10-03 07:25 10.9 82.2 8.0 1.1 344 1.4 339 846.91 214.5 0.00
2022-10-03 07:20 10.4 85.0 8.0 1.1 20 1.5 7 846.87 210.9 0.00
2022-10-03 07:15 10.2 85.8 7.9 1.5 0 1.9 324 846.88 105.0 0.00
2022-10-03 07:10 10.2 85.9 7.9 2.1 321 2.3 322 846.82 73.2 0.00
2022-10-03 07:05 9.9 85.4 7.6 2.2 320 2.4 307 846.84 61.8 0.00
2022-10-03 07:00 9.5 88.2 7.6 1.8 304 2.3 304 846.84 77.9 0.00
2022-10-03 06:55 9.1 88.3 7.3 1.2 306 1.7 306 846.75 44.8 0.00
2022-10-03 06:50 8.9 89.0 7.2 0.8 320 1.1 308 846.70 43.1 0.00
2022-10-03 06:45 8.7 89.1 7.0 1.2 305 1.4 284 846.63 36.0 0.00
2022-10-03 06:40 8.6 88.7 6.8 1.5 290 1.6 278 846.55 30.5 0.00
2022-10-03 06:35 8.5 88.3 6.6 1.8 279 2.2 278 846.52 24.3 0.00
2022-10-03 06:30 8.4 87.9 6.5 1.1 259 1.3 248 846.46 15.5 0.00
2022-10-03 06:25 8.4 87.7 6.5 1.0 251 1.5 262 846.48 10.4 0.00
2022-10-03 06:20 8.6 87.6 6.6 1.0 262 1.5 259 846.46 7.0 0.00
2022-10-03 06:15 8.8 87.4 6.8 0.6 268 0.8 278 846.44 4.8 0.00
2022-10-03 06:10 8.8 87.0 6.8 0.5 284 0.6 280 846.44 3.2 0.00
2022-10-03 06:05 8.9 86.7 6.8 0.5 256 0.8 260 846.43 2.6 0.00
2022-10-03 06:00 8.9 87.8 7.0 0.5 296 0.6 296 846.43 1.6 0.00
2022-10-03 05:55 8.8 88.1 6.9 0.7 334 0.9 16 846.34 0.8 0.00
2022-10-03 05:50 8.8 88.3 7.0 0.3 17 0.7 326 846.31 0.4 0.00
2022-10-03 05:45 8.8 88.1 7.0 1.1 326 1.4 324 846.25 0.2 0.00
2022-10-03 05:40 8.9 87.8 7.0 1.2 321 1.3 322 846.24 0.0 0.00
2022-10-03 05:35 9.0 87.3 7.0 1.5 351 1.7 335 846.20 0.0 0.00
2022-10-03 05:30 8.9 87.5 7.0 2.0 331 2.6 323 846.20 0.0 0.00
2022-10-03 05:25 8.8 88.0 7.0 2.3 324 2.7 315 846.18 0.0 0.00
2022-10-03 05:20 8.8 88.4 7.0 1.6 317 1.8 325 846.08 0.0 0.00
2022-10-03 05:15 8.7 89.0 7.0 1.9 321 2.2 307 846.08 0.0 0.00
2022-10-03 05:10 8.6 89.2 6.9 2.6 308 2.9 320 846.09 0.0 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

Data Assimilation


The future state of a dynamical system is typically calculated by integrating a numerical model, and depends on parameters such as initial conditions, model errors, empirical parameters of the model, and possibly on lateral boundary conditions. Observations add new information that can be combined with model prediction to produce optimal values of dynamical system parameters and reduce their uncertainty. A mathematical methodology that can accomplish this is called data assimilation.

 

Data assimilation is fundamentally probabilistic since the uncertainty of dynamical system parameters can be described by a probability density function. Since dynamical models add valuable prior information, data assimilation is commonly based on Bayes theorem and thus represents a Bayesian inference. Data assimilation is also nonlinear since dynamical prediction models and observation operators can be highly nonlinear.

 

CIRA data assimilation research has the following goals:

  1. develop new and improved data assimilation methodologies,
  2. apply data assimilation to high-dimensional problems in geosciences and engineering, including carbon cycle, weather, climate, and hydrology.

Since we are primarily interested in geosciences applications to high-dimensional dynamical systems, the high-performance computational component of data assimilation is also of great importance to our research.

 

Typical data assimilation methodologies developed and improved at CIRA are variational, ensemble, and hybrid ensemble-variational methodologies, but we are also exploring other avenues. Our research is encompassing a wide range of applications including carbon cycle, hydrology, climate, and cloud-resolving processes. We are also actively supporting NOAA research and development by conducting data assimilation research using NOAA operational systems and observations.