Christman Field Latest Observations
Date Time
MST
Temp
°F
RH
%
DewPt
°F
Wind
mph
Dir
°
Gust
mph
Dir
°
Press
in Hg
Solar
W/m^2
Prec
in
2020-02-28 08:00 35.5 46.3 16.9 1.5 148 2.8 150 25.048 217.9 0.00
2020-02-28 07:55 34.9 47.5 16.9 2.7 150 3.7 146 25.047 202.1 0.00
2020-02-28 07:50 33.6 47.3 15.7 1.8 156 3.9 177 25.047 181.1 0.00
2020-02-28 07:45 32.9 49.6 16.2 2.1 179 7.6 333 25.047 63.3 0.00
2020-02-28 07:40 31.5 49.7 14.9 4.9 340 8.3 341 25.048 92.0 0.00
2020-02-28 07:35 30.1 58.6 17.3 3.6 31 6.8 356 25.042 142.3 0.00
2020-02-28 07:30 28.9 60.3 16.9 7.0 356 9.6 311 25.043 125.0 0.00
2020-02-28 07:25 28.4 65.8 18.4 3.3 303 8.6 303 25.042 109.4 0.00
2020-02-28 07:20 28.0 59.7 15.8 5.1 1 8.4 345 25.042 92.5 0.00
2020-02-28 07:15 28.6 61.9 17.3 2.3 332 6.1 354 25.041 74.5 0.00
2020-02-28 07:10 26.8 59.7 14.6 1.1 188 4.2 290 25.037 58.0 0.00
2020-02-28 07:05 26.3 67.2 16.8 2.7 201 4.6 206 25.034 43.5 0.00
2020-02-28 07:00 25.6 67.7 16.4 4.6 228 9.1 310 25.036 28.2 0.00
2020-02-28 06:55 25.2 64.4 14.9 5.0 273 7.6 156 25.034 13.0 0.00
2020-02-28 06:50 23.8 67.7 14.7 3.5 183 6.2 188 25.038 12.1 0.00
2020-02-28 06:45 25.2 65.9 15.4 2.6 236 5.6 240 25.036 7.3 0.00
2020-02-28 06:40 26.6 63.6 15.9 3.8 229 9.3 245 25.034 5.0 0.00
2020-02-28 06:35 25.9 58.5 13.4 3.4 135 5.3 222 25.033 3.1 0.00
2020-02-28 06:30 24.8 62.3 13.8 5.6 221 14.9 268 25.036 1.7 0.00
2020-02-28 06:25 22.6 71.3 14.7 8.0 268 18.6 281 25.030 0.8 0.00
2020-02-28 06:20 22.5 70.3 14.3 1.5 130 4.0 130 25.033 0.2 0.00
2020-02-28 06:15 23.0 67.7 13.9 0.4 244 2.5 140 25.028 0.2 0.00
2020-02-28 06:10 23.3 67.5 14.1 1.5 167 2.5 333 25.029 0.2 0.00
2020-02-28 06:05 23.8 68.9 15.1 0.5 333 2.1 333 25.023 0.1 0.00
2020-02-28 06:00 23.6 65.8 13.8 0.3 333 2.1 333 25.022 0.1 0.00
2020-02-28 05:55 23.8 65.9 14.0 1.9 333 2.3 333 25.023 0.1 0.00
2020-02-28 05:50 23.2 67.6 14.1 0.8 333 2.2 333 25.023 0.1 0.00
2020-02-28 05:45 23.5 70.1 15.2 1.5 308 3.2 321 25.023 0.1 0.00
2020-02-28 05:40 23.9 65.9 14.1 1.1 316 2.6 315 25.022 0.0 0.00
2020-02-28 05:35 22.1 72.4 14.6 0.0 317 0.0 333 25.020 0.1 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

Use of Trace Gas Measurements to Quantify Convective Transport Time Scales and Pathways

January 25, 2019 10:45 am
ATS room 101

Presented by: Z. Johnny Luo

Hosted by: Sue van den Heever

Visiting ATS from the City University of New York


Discussion will begin at 11:15 a.m.
Refreshments will be served at 10:45 a.m. in the weather lab

 

 

Convective transport from the marine boundary layer (MBL) to the upper troposphere (UT) is investigated using airborne in situ measurements of chemical species over the tropical western Pacific (TWP). Using 42 trace gas species with photochemical lifetimes ranging from shorter than a day to multiple decades, we derive a transit time spectrum G(t) and the associated modal and mean transit times for the UT air mass sampled over the convectively dominant TWP region. G(t) describes relative contributions of air masses transported from the MBL to the UT via all transport paths with different transit times (see the schematic illustration below). We further demonstrate that the tracer-derived transit time scale is broadly comparable to that estimated from convective mass flux. The observation-based transit time spectrum not only provides insights into convective transport pathways, but also has the potential to serve as an effective diagnostic or metric for evaluating the representation of convective transport in global models.