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Christman Field Latest Observations
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Date Time
MST
Temp
°F
RH
%
DewPt
°F
Wind
mph
Dir
°
Gust
mph
Dir
°
Press
in Hg
Solar
W/m^2
Prec
in
2022-12-09 00:45 20.3 67.6 11.3 0.8 230 2.2 235 24.919 0.2 0.00
2022-12-09 00:40 18.2 69.7 10.0 1.6 234 3.0 222 24.926 0.2 0.00
2022-12-09 00:35 17.0 70.9 9.2 2.2 199 4.0 188 24.928 0.2 0.00
2022-12-09 00:30 18.4 68.4 9.7 3.0 254 4.4 297 24.925 0.2 0.00
2022-12-09 00:25 21.3 64.0 11.0 2.2 294 3.1 256 24.925 0.2 0.00
2022-12-09 00:20 24.3 56.9 11.2 1.6 190 2.3 199 24.927 0.2 0.00
2022-12-09 00:15 24.1 54.6 10.1 2.2 187 4.3 174 24.930 0.2 0.00
2022-12-09 00:10 23.3 57.8 10.6 3.6 178 5.0 183 24.935 0.2 0.00
2022-12-09 00:05 23.0 62.0 11.9 3.2 189 3.9 184 24.939 0.2 0.00
2022-12-09 00:00 23.5 58.9 11.2 3.7 178 4.3 147 24.940 0.1 0.00
2022-12-08 23:55 23.3 60.3 11.5 4.5 147 5.8 130 24.939 0.2 0.00
2022-12-08 23:50 24.3 56.9 11.2 2.3 137 4.0 137 24.937 0.2 0.00
2022-12-08 23:45 24.7 55.1 10.9 2.1 160 3.0 225 24.935 0.2 0.00
2022-12-08 23:40 23.7 57.5 10.9 2.4 231 3.7 231 24.934 0.2 0.00
2022-12-08 23:35 23.4 60.8 11.9 3.3 174 4.6 220 24.933 0.2 0.00
2022-12-08 23:30 24.8 55.9 11.3 4.8 226 5.9 240 24.930 0.2 0.00
2022-12-08 23:25 23.9 60.3 12.2 4.4 240 4.9 238 24.932 0.2 0.00
2022-12-08 23:20 23.0 58.5 10.7 5.1 232 5.5 243 24.933 0.2 0.00
2022-12-08 23:15 22.5 61.8 11.4 4.8 246 5.6 252 24.933 0.2 0.00
2022-12-08 23:10 21.7 62.8 11.0 3.8 272 4.3 248 24.935 0.2 0.00
2022-12-08 23:05 23.6 55.6 10.1 3.0 234 3.5 236 24.936 0.2 0.00
2022-12-08 23:00 21.7 61.2 10.4 2.1 192 2.5 186 24.935 0.2 0.00
2022-12-08 22:55 21.3 64.1 11.0 3.6 213 4.6 224 24.933 0.2 0.00
2022-12-08 22:50 22.4 62.3 11.4 4.1 229 4.9 255 24.935 0.2 0.00
2022-12-08 22:45 21.5 62.8 10.8 3.4 256 4.3 190 24.936 0.2 0.00
2022-12-08 22:40 21.4 63.2 10.8 4.7 195 5.3 190 24.933 0.2 0.00
2022-12-08 22:35 22.9 62.0 11.8 5.6 229 6.1 260 24.932 0.2 0.00
2022-12-08 22:30 22.2 59.7 10.3 2.5 253 5.9 257 24.934 0.2 0.00
2022-12-08 22:25 20.0 66.7 10.8 1.0 175 2.8 282 24.935 0.2 0.00
2022-12-08 22:20 21.2 63.0 10.6 3.8 284 6.3 269 24.935 0.2 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
2022-12-09 00:45 -6.5 67.6 -11.5 0.3 230 1.0 235 843.85 0.2 0.00
2022-12-09 00:40 -7.6 69.7 -12.2 0.7 234 1.3 222 844.08 0.2 0.00
2022-12-09 00:35 -8.3 70.9 -12.7 1.0 199 1.8 188 844.16 0.2 0.00
2022-12-09 00:30 -7.5 68.4 -12.4 1.3 254 2.0 297 844.05 0.2 0.00
2022-12-09 00:25 -6.0 64.0 -11.7 1.0 294 1.4 256 844.06 0.2 0.00
2022-12-09 00:20 -4.3 56.9 -11.6 0.7 190 1.0 199 844.11 0.2 0.00
2022-12-09 00:15 -4.4 54.6 -12.2 1.0 187 1.9 174 844.23 0.2 0.00
2022-12-09 00:10 -4.8 57.8 -11.9 1.6 178 2.2 183 844.38 0.2 0.00
2022-12-09 00:05 -5.0 62.0 -11.2 1.4 189 1.8 184 844.52 0.2 0.00
2022-12-09 00:00 -4.7 58.9 -11.6 1.6 178 1.9 147 844.58 0.1 0.00
2022-12-08 23:55 -4.9 60.3 -11.4 2.0 147 2.6 130 844.53 0.2 0.00
2022-12-08 23:50 -4.3 56.9 -11.6 1.0 137 1.8 137 844.46 0.2 0.00
2022-12-08 23:45 -4.0 55.1 -11.7 1.0 160 1.3 225 844.41 0.2 0.00
2022-12-08 23:40 -4.6 57.5 -11.7 1.1 231 1.6 231 844.36 0.2 0.00
2022-12-08 23:35 -4.8 60.8 -11.2 1.5 174 2.0 220 844.34 0.2 0.00
2022-12-08 23:30 -4.0 55.9 -11.5 2.1 226 2.6 240 844.23 0.2 0.00
2022-12-08 23:25 -4.5 60.3 -11.0 2.0 240 2.2 238 844.31 0.2 0.00
2022-12-08 23:20 -5.0 58.5 -11.9 2.3 232 2.5 243 844.32 0.2 0.00
2022-12-08 23:15 -5.3 61.8 -11.5 2.1 246 2.5 252 844.31 0.2 0.00
2022-12-08 23:10 -5.7 62.8 -11.7 1.7 272 1.9 248 844.38 0.2 0.00
2022-12-08 23:05 -4.6 55.6 -12.2 1.3 234 1.6 236 844.42 0.2 0.00
2022-12-08 23:00 -5.7 61.2 -12.0 0.9 192 1.1 186 844.38 0.2 0.00
2022-12-08 22:55 -6.0 64.1 -11.7 1.6 213 2.1 224 844.31 0.2 0.00
2022-12-08 22:50 -5.4 62.3 -11.4 1.9 229 2.2 255 844.39 0.2 0.00
2022-12-08 22:45 -5.8 62.8 -11.8 1.5 256 1.9 190 844.42 0.2 0.00
2022-12-08 22:40 -5.9 63.2 -11.8 2.1 195 2.4 190 844.32 0.2 0.00
2022-12-08 22:35 -5.1 62.0 -11.2 2.5 229 2.7 260 844.29 0.2 0.00
2022-12-08 22:30 -5.5 59.7 -12.1 1.1 253 2.6 257 844.35 0.2 0.00
2022-12-08 22:25 -6.6 66.7 -11.8 0.4 175 1.3 282 844.39 0.2 0.00
2022-12-08 22:20 -6.0 63.0 -11.9 1.7 284 2.8 269 844.40 0.2 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

Satellite radiance data assimilation within the NOAA hourly Rapid Refresh and High-Resolution Rapid Refresh

September 25, 2019 10:30 am
CIRA Director’s Conference Room

Presented by: Dr. Haidao Lin

Hosted by:

CIRA/CSU and NOAA/ESRL/GSD


Satellite radiance data have been shown to have consistent positive impact with statistical significance within the NOAA Rapid Refresh (RAP) hourly updated model system.  RAP version 4 (RAPv4) was implemented operationally at the National Centers for Environmental Prediction (NCEP) in July 2018.  This implementation included a significant radiance upgrade package with greater use of direct broadcast/readout data as well as assimilation of data from new sensors.  The RAP uses the Gridpoint Statistical Interpolation (GSI) hybrid variational/Ensemble Kalman Filter (EnKF) data assimilation system, with ensemble information for the regional assimilation coming from the 80-member global ensemble data assimilation system.

The next satellite assimilation upgrade package has been recently finalized for the coming RAP version 5 (RAPv5) NCEP operation upgrade (planned for spring 2020).  This RAPv5 radiance upgrade package includes the assimilation of the GOES-16 Advanced Baseline Imager (ABI) infrared radiance data, the Cross-track Infrared Sounder Full-Spectral-Resolution (CrIS-FSR) data both from S-NPP and NOAA-20, and the Advanced Technology Microwave Sounder (ATMS) data from NOAA-20.  The initial ABI radiance assimilation work started from the code development to read in ABI radiance data into the GSI and single case GSI study to identify the ABI data impact from the three water vapor channels, then ABI O-B bias and standard deviation evaluation for different cloud masks and different surface types within the RAP domain was performed.  Research work associated with ABI error tuning and quality control was conducted through hourly RAP retrospective runs with forecast verification to maximize the ABI data impact.  In addition, a series of RAP retrospective runs were performed to evaluate the forecast impact from these new instruments/data separately and/or combined together.

Use of polar orbiter satellite radiance data in rapidly updated regional models has traditionally been limited by data latency issues combined with the very short data cutoff window for these models.  For the hourly RAP mesoscale model system, the data cutoff time is ~ 30 min. resulting in limited data usage for standard data delivery methods.  The availability of direct broadcast data offers the potential for improvements in the percent of total polar orbiter data being assimilated into rapidly updated regional models.  The data impact from assimilation of the direct broadcast/readout radiance data has been evaluated for the RAP model through extensive retrospective experiments with the short-term forecast verification against the traditional radiosonde observations as well as the CrIS observed radiance observations.

At the seminar, I will present the overall and individual radiance data impact within the RAPv4, and then will focus on the recent radiance updates for the coming RAPv5, including GOES-16 ABI, NOAA-20 CrIS-FSR/ATMS data assimilating.  The impact from direct broadcast radiance data within RAP will also be shown as well as some preliminary work on radiance assimilation within the High-Resolution Rapid Refresh (HRRR)/Alaska.