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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
2023-01-31 23:45 8.0 81.2 3.5 0.9 71 3.0 72 24.894 0.0 0.00
2023-01-31 23:40 9.4 78.7 4.1 2.7 204 3.9 230 24.892 0.0 0.00
2023-01-31 23:35 8.6 82.8 4.4 3.0 243 4.2 247 24.894 0.0 0.00
2023-01-31 23:30 8.9 78.5 3.6 2.6 228 3.3 198 24.894 0.0 0.00
2023-01-31 23:25 9.6 79.0 4.3 3.4 198 4.1 225 24.894 0.0 0.00
2023-01-31 23:20 9.8 76.9 4.1 2.2 216 2.9 209 24.894 0.0 0.00
2023-01-31 23:15 10.0 79.4 4.9 2.6 220 2.9 231 24.894 0.0 0.00
2023-01-31 23:10 9.3 79.6 4.3 3.1 220 4.4 249 24.894 0.0 0.00
2023-01-31 23:05 10.4 78.0 4.9 4.2 267 6.2 283 24.894 0.0 0.00
2023-01-31 23:00 9.2 80.0 4.3 3.3 264 4.7 264 24.893 0.0 0.00
2023-01-31 22:55 7.7 82.1 3.4 3.8 242 6.1 299 24.894 0.0 0.00
2023-01-31 22:50 6.1 81.9 1.8 3.7 315 6.8 313 24.894 0.0 0.00
2023-01-31 22:45 8.5 74.4 2.0 3.1 339 8.3 330 24.896 0.0 0.00
2023-01-31 22:40 9.3 76.1 3.3 4.2 333 7.4 333 24.900 0.0 0.00
2023-01-31 22:35 8.8 78.1 3.4 4.6 1 5.6 345 24.901 0.0 0.00
2023-01-31 22:30 10.8 76.4 4.8 2.3 288 3.2 288 24.900 0.0 0.00
2023-01-31 22:25 11.1 76.2 5.1 0.5 260 1.9 260 24.901 0.0 0.00
2023-01-31 22:20 11.5 75.5 5.2 2.1 217 3.1 261 24.898 0.0 0.00
2023-01-31 22:15 10.1 78.5 4.8 2.4 266 4.2 259 24.899 0.0 0.00
2023-01-31 22:10 10.6 78.0 5.1 2.2 216 4.9 244 24.900 0.0 0.00
2023-01-31 22:05 10.3 78.3 4.9 3.1 247 3.8 248 24.899 0.0 0.00
2023-01-31 22:00 9.5 80.2 4.6 4.5 219 5.5 255 24.897 0.0 0.00
2023-01-31 21:55 11.1 76.3 5.1 4.2 262 8.2 255 24.896 0.0 0.00
2023-01-31 21:50 9.0 86.9 5.9 5.5 251 8.9 253 24.898 0.0 0.00
2023-01-31 21:45 5.8 84.0 2.0 3.7 265 5.0 247 24.899 0.0 0.00
2023-01-31 21:40 6.2 83.5 2.2 3.5 259 4.4 247 24.897 0.0 0.00
2023-01-31 21:35 5.7 85.8 2.4 2.7 317 3.5 316 24.896 0.0 0.00
2023-01-31 21:30 5.3 84.5 1.7 3.1 299 4.3 261 24.899 0.1 0.00
2023-01-31 21:25 5.2 84.3 1.5 2.7 248 4.3 237 24.901 0.0 0.00
2023-01-31 21:20 5.3 82.4 1.1 1.8 249 3.2 249 24.899 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
2023-01-31 23:45 -13.3 81.2 -15.8 0.4 71 1.4 72 843.02 0.0 0.00
2023-01-31 23:40 -12.6 78.7 -15.5 1.2 204 1.7 230 842.96 0.0 0.00
2023-01-31 23:35 -13.0 82.8 -15.3 1.4 243 1.9 247 843.00 0.0 0.00
2023-01-31 23:30 -12.8 78.5 -15.8 1.1 228 1.5 198 843.01 0.0 0.00
2023-01-31 23:25 -12.5 79.0 -15.4 1.5 198 1.8 225 843.01 0.0 0.00
2023-01-31 23:20 -12.3 76.9 -15.5 1.0 216 1.3 209 843.00 0.0 0.00
2023-01-31 23:15 -12.2 79.4 -15.1 1.1 220 1.3 231 843.00 0.0 0.00
2023-01-31 23:10 -12.6 79.6 -15.4 1.4 220 2.0 249 843.01 0.0 0.00
2023-01-31 23:05 -12.0 78.0 -15.0 1.9 267 2.8 283 843.01 0.0 0.00
2023-01-31 23:00 -12.6 80.0 -15.4 1.5 264 2.1 264 842.99 0.0 0.00
2023-01-31 22:55 -13.5 82.1 -15.9 1.7 242 2.7 299 843.00 0.0 0.00
2023-01-31 22:50 -14.4 81.9 -16.8 1.6 315 3.1 313 843.01 0.0 0.00
2023-01-31 22:45 -13.1 74.4 -16.7 1.4 339 3.7 330 843.08 0.0 0.00
2023-01-31 22:40 -12.6 76.1 -15.9 1.9 333 3.3 333 843.20 0.0 0.00
2023-01-31 22:35 -12.9 78.1 -15.9 2.1 1 2.5 345 843.24 0.0 0.00
2023-01-31 22:30 -11.8 76.4 -15.1 1.0 288 1.4 288 843.19 0.0 0.00
2023-01-31 22:25 -11.6 76.2 -15.0 0.2 260 0.9 260 843.24 0.0 0.00
2023-01-31 22:20 -11.4 75.5 -14.9 1.0 217 1.4 261 843.16 0.0 0.00
2023-01-31 22:15 -12.2 78.5 -15.1 1.1 266 1.9 259 843.17 0.0 0.00
2023-01-31 22:10 -11.9 78.0 -15.0 1.0 216 2.2 244 843.20 0.0 0.00
2023-01-31 22:05 -12.0 78.3 -15.0 1.4 247 1.7 248 843.19 0.0 0.00
2023-01-31 22:00 -12.5 80.2 -15.2 2.0 219 2.5 255 843.12 0.0 0.00
2023-01-31 21:55 -11.6 76.3 -14.9 1.9 262 3.7 255 843.06 0.0 0.00
2023-01-31 21:50 -12.8 86.9 -14.5 2.5 251 4.0 253 843.13 0.0 0.00
2023-01-31 21:45 -14.6 84.0 -16.7 1.7 265 2.2 247 843.17 0.0 0.00
2023-01-31 21:40 -14.4 83.5 -16.5 1.5 259 2.0 247 843.12 0.0 0.00
2023-01-31 21:35 -14.6 85.8 -16.5 1.2 317 1.5 316 843.06 0.0 0.00
2023-01-31 21:30 -14.8 84.5 -16.8 1.4 299 1.9 261 843.18 0.1 0.00
2023-01-31 21:25 -14.9 84.3 -16.9 1.2 248 1.9 237 843.23 0.0 0.00
2023-01-31 21:20 -14.8 82.4 -17.2 0.8 249 1.4 249 843.16 0.0 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

Seasonal Variability of Warm Boundary Layer Cloud and Precipitation Properties in the Southern Ocean as Diagnosed from A-Train and Ship-Based Remote Sensing Data

February 3, 2017 11:15 am
ATS 101

Presented by: Jay Mace

Hosted by: Paul DeMott

University of Utah


The extensive cloudiness and resulting high albedo of the Southern Oceans (SO) are predominantly due to the occurrence of widespread marine boundary layer (MBL) clouds. Recent work finds correlations between biogenically enhanced cloud condensation nuclei concentrations and cloud droplet number concentrations derived from passive satellite data. The active remote sensors in the A-Train have created a unique and long-term record of these clouds that include vertical profiles of radar reflectivity and microwave brightness temperature from CloudSat that can be combined with solar reflectances from MODIS. We examine this data record using a unique algorithm to infer warm-topped cloud and precipitation properties. We find seasonal variations in cloud properties of summer season clouds demonstrating higher cloud droplet number concentrations on average. In addition, a given rain rate requires higher liquid water contents in summer suggesting that the precipitation in summer clouds are more susceptible to changes in droplet number compared to similar clouds during winter.