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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
2022-05-22 19:05 53.3 47.1 33.7 13.0 308 16.0 298 24.916 1.8 0.00
2022-05-22 19:00 53.4 47.1 33.7 12.0 292 15.6 303 24.918 1.9 0.00
2022-05-22 18:55 53.6 47.1 33.9 12.1 303 15.3 303 24.917 2.8 0.00
2022-05-22 18:50 53.6 46.3 33.5 11.8 299 17.7 327 24.915 3.9 0.00
2022-05-22 18:45 53.5 48.9 34.7 4.9 327 11.0 336 24.914 6.5 0.00
2022-05-22 18:40 53.5 48.2 34.5 3.8 319 4.3 327 24.912 9.4 0.00
2022-05-22 18:35 53.6 47.9 34.3 4.7 317 5.4 305 24.912 10.5 0.00
2022-05-22 18:30 53.8 47.5 34.3 5.1 306 5.5 304 24.914 10.1 0.00
2022-05-22 18:25 54.3 46.0 34.0 4.0 299 5.2 313 24.910 13.9 0.00
2022-05-22 18:20 54.7 45.1 33.9 3.0 299 4.1 295 24.906 21.8 0.00
2022-05-22 18:15 55.0 45.1 34.1 3.4 306 4.0 311 24.902 33.6 0.00
2022-05-22 18:10 55.3 45.1 34.3 4.6 307 5.9 308 24.902 46.9 0.00
2022-05-22 18:05 55.5 42.6 33.2 5.3 308 6.1 292 24.904 51.1 0.00
2022-05-22 18:00 55.6 42.4 33.1 5.7 292 6.4 287 24.905 63.7 0.00
2022-05-22 17:55 56.0 41.1 32.7 4.9 279 6.1 285 24.903 59.2 0.00
2022-05-22 17:50 57.0 39.4 32.6 2.6 294 4.6 294 24.901 59.5 0.00
2022-05-22 17:45 58.1 34.9 30.5 2.1 276 3.1 282 24.900 74.7 0.00
2022-05-22 17:40 58.6 35.3 31.3 0.3 242 1.1 263 24.898 136.6 0.00
2022-05-22 17:35 58.3 34.0 30.1 0.2 56 1.1 132 24.898 143.3 0.00
2022-05-22 17:30 58.8 34.6 31.0 1.2 92 3.6 59 24.897 156.8 0.00
2022-05-22 17:25 58.3 33.7 29.8 2.5 219 4.4 208 24.898 231.8 0.00
2022-05-22 17:20 58.0 36.5 31.5 4.1 216 5.8 207 24.899 168.3 0.00
2022-05-22 17:15 58.9 33.8 30.4 3.6 182 7.0 187 24.899 293.4 0.00
2022-05-22 17:10 59.3 34.4 31.3 3.5 216 5.9 109 24.901 294.5 0.00
2022-05-22 17:05 59.9 32.2 30.1 1.8 101 4.2 111 24.901 315.3 0.00
2022-05-22 17:00 58.9 34.2 30.7 1.7 228 3.4 225 24.901 356.3 0.00
2022-05-22 16:55 57.6 36.3 31.1 2.4 241 5.7 142 24.900 275.1 0.00
2022-05-22 16:50 58.2 36.6 31.7 3.0 166 6.3 158 24.900 237.4 0.00
2022-05-22 16:45 58.3 34.7 30.5 4.0 148 7.1 156 24.901 322.3 0.00
2022-05-22 16:40 58.5 33.0 29.4 4.4 163 7.1 151 24.898 357.3 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
2022-05-22 19:05 11.9 47.1 0.9 5.8 308 7.2 298 843.76 1.8 0.00
2022-05-22 19:00 11.9 47.1 1.0 5.3 292 7.0 303 843.82 1.9 0.00
2022-05-22 18:55 12.0 47.1 1.1 5.4 303 6.9 303 843.79 2.8 0.00
2022-05-22 18:50 12.0 46.3 0.8 5.3 299 7.9 327 843.72 3.9 0.00
2022-05-22 18:45 11.9 48.9 1.5 2.2 327 4.9 336 843.68 6.5 0.00
2022-05-22 18:40 12.0 48.2 1.4 1.7 319 1.9 327 843.61 9.4 0.00
2022-05-22 18:35 12.0 47.9 1.3 2.1 317 2.4 305 843.63 10.5 0.00
2022-05-22 18:30 12.1 47.5 1.3 2.3 306 2.5 304 843.67 10.1 0.00
2022-05-22 18:25 12.4 46.0 1.1 1.8 299 2.3 313 843.53 13.9 0.00
2022-05-22 18:20 12.6 45.1 1.0 1.3 299 1.8 295 843.42 21.8 0.00
2022-05-22 18:15 12.8 45.1 1.2 1.5 306 1.8 311 843.29 33.6 0.00
2022-05-22 18:10 12.9 45.1 1.3 2.0 307 2.6 308 843.29 46.9 0.00
2022-05-22 18:05 13.1 42.6 0.7 2.4 308 2.7 292 843.33 51.1 0.00
2022-05-22 18:00 13.1 42.4 0.6 2.5 292 2.9 287 843.38 63.7 0.00
2022-05-22 17:55 13.3 41.1 0.4 2.2 279 2.7 285 843.32 59.2 0.00
2022-05-22 17:50 13.9 39.4 0.3 1.2 294 2.1 294 843.26 59.5 0.00
2022-05-22 17:45 14.5 34.9 -0.8 0.9 276 1.4 282 843.20 74.7 0.00
2022-05-22 17:40 14.8 35.3 -0.4 0.1 242 0.5 263 843.15 136.6 0.00
2022-05-22 17:35 14.6 34.0 -1.1 0.1 56 0.5 132 843.13 143.3 0.00
2022-05-22 17:30 14.9 34.6 -0.6 0.5 92 1.6 59 843.12 156.8 0.00
2022-05-22 17:25 14.6 33.7 -1.2 1.1 219 2.0 208 843.15 231.8 0.00
2022-05-22 17:20 14.5 36.5 -0.3 1.8 216 2.6 207 843.18 168.3 0.00
2022-05-22 17:15 14.9 33.8 -0.9 1.6 182 3.1 187 843.19 293.4 0.00
2022-05-22 17:10 15.2 34.4 -0.4 1.6 216 2.6 109 843.24 294.5 0.00
2022-05-22 17:05 15.5 32.2 -1.0 0.8 101 1.9 111 843.23 315.3 0.00
2022-05-22 17:00 14.9 34.2 -0.7 0.8 228 1.5 225 843.23 356.3 0.00
2022-05-22 16:55 14.2 36.3 -0.5 1.1 241 2.5 142 843.22 275.1 0.00
2022-05-22 16:50 14.5 36.6 -0.1 1.3 166 2.8 158 843.23 237.4 0.00
2022-05-22 16:45 14.6 34.7 -0.8 1.8 148 3.2 156 843.24 322.3 0.00
2022-05-22 16:40 14.7 33.0 -1.4 2.0 163 3.2 151 843.14 357.3 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.