The Turbulence Characterization and Detection (TCAD) Program
The TCAD field program was conducted near Greeley, Colorado during
June 1999. Participating agencies included the National Aeronautical
and Space Administration (NASA), the National Center for Atmospheric
Research (NCAR), the AlliedSignal Corporation, the Rockwell-Collins
Corporation, the Colorado State University (CSU) and the South Dakota
School of Mines and Technology (SOM). Three aircraft participated: the
Rockwell-Collins Sabreliner, the South Dakota T-28, and the
AlliedSignal Convair 580. The CSU CHILL and Pawnee Doppler radars
provided ground-based radar support. The NCAR Mobile CLASS van took
daily soundings.
The links below are to the Operations Summary and to
the data sets collected for each flight. Plots and data files of the Colorado Profilers, the
CLASS and the Denver
soundings are included as are regional plots of the metar data.
WWW address: http://www.rap.ucar.edu/projects/nasa_turb/turb.html
Operations Summary for the TCAD Field Program
A summary of the operations is provided in the PDF format documents below. The size of each file is indicated
in parentheses.
Introduction, part 1 (0.2 MBytes)
Introduction, part 2 (0.2 MBytes)
June 2-7 (1.4 MBytes)
June 8-12 (1.3 MBytes)
June 13-17 (1.1 MBytes)
June 18-21 (1.1 MBytes)
June 22-25 (1.0 MBytes)
Click here for a map of the TCAD operations region.
The map is also in the Introduction of the Operations Summary.
TCAD Data Sets
The priority of each case is shown below. These pages are in constant revision (until
further notice). Check them frequently.
***Recommended reading: Important
information about TCAD data sets
04 June 1999 (Flight 2): priority = none
05 June 1999 (Flight 3): priority = 6 for Run 4
09 June 1999 (Flight 4): priority = 5 for Run 4
11 June 1999 (Flight 6): priority = 7 for all Runs
11 June 1999 (Flight 7): priority = 1 for Run 2
12 June 1999 (Flight 8): priority = 9
14 June 1999 (Flight 9): priority = 2 for Run 6
14 June 1999 (Flight 10): priority =
17 June 1999 (Flight 11): priority = 3 for Run 4
17 June 1999 (Flight 12): priority =
18 June 1999 (Flight 13): priority = none
19 June 1999 (Flight 14): priority = none
20 June 1999 (Flight 15): priority = 4
20 June 1999 (Flight 16): priority = 4
21 June 1999 (Flight 17): priority = none
21 June 1999 (Flight 18): priority = none
22 June 1999 (Flight 19): priority = 8
22 June 1999 (Flight 20): priority = 8
25 June 1999 (Flight 21): priority = none
Dual-Doppler Analysis Data Sets
14 June 1999
17 June 1999
Link to the South Dakota School of Mines TCAD Project Report (PDF format)
T-28 Web page
Cheyenne NEXRAD Movies for TCAD
Reflectivity and radial velocity movies are shown from the Cheyenne NEXRAD, when
available, for those days with flights.
04 June 1999, Reflectivity
04 June 1999, Radial velocity
05 June 1999, Reflectivity
05 June 1999, Radial velocity
09 June 1999, Reflectivity
09 June 1999, Radial velocity
10 June 1999, Reflectivity
10 June 1999, Radial velocity
11 June 1999, Reflectivity
11 June 1999, Radial velocity
14 June 1999, Reflectivity
14 June 1999, Radial velocity
Example of Aircraft Tracks
Aircraft tracks are superimposed over composite reflectivity images.
These images illustrate the effect of weather on aviation routes (This is
not related to TCAD).
0200 UTC on 30 June 1998
0300 UTC on 30 June 1998
0400 UTC on 30 June 1998
0500 UTC on 30 June 1998
Other Links of Interest
NCAR/RAP Real-Time Weather Page
NEXRAD
movie loops
Aviation Digital Data Service (ADDS)
NCAR/MMM Real-Time MM5
National Convective Weather Forecast - 1999
CSU-CHILL: 1999 Turbulence Project Home P
age
Latest Denver Sounding (click on image to enlarge)
Copyright (c) National Center for Atmospheric Research (NCAR) 1998 -- All Rights Reserved
NCAR/RAP Home Page
NCAR/RAP Real-Time Weather Page
NCAR/RAP Projects Home Page
Web Page Author: Cathy Kessinger