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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
2023-06-09 04:00 55.5 80.7 49.7 5.9 342 7.0 340 24.860 0.0 0.00
2023-06-09 03:55 56.5 80.7 50.7 6.1 340 8.3 0 24.860 0.0 0.00
2023-06-09 03:50 56.1 78.3 49.5 3.5 282 4.3 282 24.860 0.0 0.00
2023-06-09 03:45 54.9 85.1 50.5 2.6 310 3.3 314 24.862 0.0 0.00
2023-06-09 03:40 54.6 86.6 50.7 2.5 269 3.3 276 24.863 0.0 0.00
2023-06-09 03:35 54.9 85.9 50.8 3.3 273 3.6 308 24.861 0.0 0.00
2023-06-09 03:30 55.5 84.1 50.8 2.6 314 3.3 319 24.860 0.0 0.00
2023-06-09 03:25 55.6 82.6 50.4 3.2 335 4.0 319 24.860 0.0 0.00
2023-06-09 03:20 55.4 83.4 50.4 3.6 314 4.3 324 24.861 0.0 0.00
2023-06-09 03:15 55.0 83.1 50.0 3.8 323 4.8 334 24.861 0.0 0.00
2023-06-09 03:10 55.5 83.3 50.6 1.4 298 4.8 323 24.862 0.0 0.00
2023-06-09 03:05 55.9 82.8 50.8 1.3 168 2.7 156 24.862 0.0 0.00
2023-06-09 03:00 56.3 81.5 50.7 1.8 156 2.6 156 24.864 0.0 0.00
2023-06-09 02:55 56.3 80.4 50.3 1.4 113 2.1 65 24.864 0.0 0.00
2023-06-09 02:50 55.9 79.1 49.6 2.0 64 2.4 43 24.866 0.0 0.00
2023-06-09 02:45 55.8 81.0 50.1 2.6 66 3.2 12 24.867 0.0 0.00
2023-06-09 02:40 56.0 81.1 50.3 3.1 1 4.7 310 24.870 0.0 0.00
2023-06-09 02:35 56.1 81.2 50.4 3.0 307 4.4 305 24.867 0.0 0.00
2023-06-09 02:30 55.9 82.4 50.6 0.8 354 1.7 355 24.864 0.0 0.00
2023-06-09 02:25 56.7 82.1 51.3 0.0 179 0.1 162 24.864 0.0 0.00
2023-06-09 02:20 56.9 78.2 50.2 0.6 43 1.7 43 24.865 0.0 0.00
2023-06-09 02:15 56.9 79.5 50.7 0.9 43 1.8 55 24.865 0.0 0.00
2023-06-09 02:10 56.8 79.5 50.5 0.8 54 1.8 65 24.864 0.0 0.00
2023-06-09 02:05 56.8 81.4 51.1 2.1 122 2.5 163 24.866 0.0 0.00
2023-06-09 02:00 57.1 80.1 51.0 1.9 211 2.8 284 24.864 0.0 0.00
2023-06-09 01:55 57.1 80.2 51.0 1.6 294 2.4 308 24.864 0.0 0.00
2023-06-09 01:50 57.4 80.0 51.3 2.9 283 3.9 315 24.863 0.0 0.00
2023-06-09 01:45 57.8 78.0 51.0 3.6 328 4.7 325 24.865 0.0 0.00
2023-06-09 01:40 57.1 78.0 50.3 3.1 329 5.2 315 24.868 0.0 0.00
2023-06-09 01:35 56.6 82.4 51.3 0.1 230 1.0 243 24.872 0.1 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
2023-06-09 04:00 13.1 80.7 9.8 2.6 342 3.1 340 841.85 0.0 0.00
2023-06-09 03:55 13.6 80.7 10.4 2.7 340 3.7 0 841.85 0.0 0.00
2023-06-09 03:50 13.4 78.3 9.7 1.6 282 1.9 282 841.86 0.0 0.00
2023-06-09 03:45 12.7 85.1 10.3 1.2 310 1.5 314 841.94 0.0 0.00
2023-06-09 03:40 12.6 86.6 10.4 1.1 269 1.5 276 841.97 0.0 0.00
2023-06-09 03:35 12.7 85.9 10.4 1.5 273 1.6 308 841.87 0.0 0.00
2023-06-09 03:30 13.1 84.1 10.5 1.2 314 1.5 319 841.85 0.0 0.00
2023-06-09 03:25 13.1 82.6 10.2 1.4 335 1.8 319 841.85 0.0 0.00
2023-06-09 03:20 13.0 83.4 10.2 1.6 314 1.9 324 841.88 0.0 0.00
2023-06-09 03:15 12.8 83.1 10.0 1.7 323 2.2 334 841.89 0.0 0.00
2023-06-09 03:10 13.1 83.3 10.3 0.6 298 2.2 323 841.94 0.0 0.00
2023-06-09 03:05 13.3 82.8 10.4 0.6 168 1.2 156 841.93 0.0 0.00
2023-06-09 03:00 13.5 81.5 10.4 0.8 156 1.2 156 841.98 0.0 0.00
2023-06-09 02:55 13.5 80.4 10.2 0.6 113 0.9 65 841.99 0.0 0.00
2023-06-09 02:50 13.3 79.1 9.8 0.9 64 1.1 43 842.04 0.0 0.00
2023-06-09 02:45 13.2 81.0 10.0 1.1 66 1.4 12 842.09 0.0 0.00
2023-06-09 02:40 13.3 81.1 10.2 1.4 1 2.1 310 842.19 0.0 0.00
2023-06-09 02:35 13.4 81.2 10.2 1.3 307 2.0 305 842.10 0.0 0.00
2023-06-09 02:30 13.3 82.4 10.3 0.4 354 0.7 355 841.99 0.0 0.00
2023-06-09 02:25 13.7 82.1 10.7 0.0 179 0.0 162 841.99 0.0 0.00
2023-06-09 02:20 13.8 78.2 10.1 0.3 43 0.7 43 842.02 0.0 0.00
2023-06-09 02:15 13.8 79.5 10.4 0.4 43 0.8 55 842.03 0.0 0.00
2023-06-09 02:10 13.8 79.5 10.3 0.4 54 0.8 65 841.98 0.0 0.00
2023-06-09 02:05 13.8 81.4 10.6 0.9 122 1.1 163 842.05 0.0 0.00
2023-06-09 02:00 13.9 80.1 10.5 0.8 211 1.3 284 841.98 0.0 0.00
2023-06-09 01:55 13.9 80.2 10.6 0.7 294 1.1 308 841.98 0.0 0.00
2023-06-09 01:50 14.1 80.0 10.7 1.3 283 1.7 315 841.96 0.0 0.00
2023-06-09 01:45 14.3 78.0 10.5 1.6 328 2.1 325 842.04 0.0 0.00
2023-06-09 01:40 14.0 78.0 10.2 1.4 329 2.3 315 842.11 0.0 0.00
2023-06-09 01:35 13.7 82.4 10.7 0.0 230 0.4 243 842.28 0.1 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.