Articles
From CSU-CHILL
Featured Articles
These are examples of CSU-CHILL data selected from meteorologically interesting cases. The data plots generally have had some basic level of post-processing applied (i.e., calculations of derived fields, utilization of specialized base maps, etc.)
- Differential echo motions: 24 June 2005
- The passage of an outflow boundary aided in the development of mesoscale anticyclonic rotation in an area of thunderstorms.
- Local flooding in Byers, Colorado: 7 July 2010
- Two feet of water was reported to be running over the I-70 exit at Byers following the passage of several thunderstorm echo cores.
- Severe thunderstorm outflow: 26 June 2009
- Outflow from a dissipating thunderstorm produced 68 mph surface wind gusts near Berthoud, Colorado.
- Gust front collision: 2 July 2010
- A thunderstorm developed over Denver International Airport following a collision of two gust fronts.
- Evolution of a three body scattering signature: 26 May 2010
- An echo pattern due to three body scattering became well-defined as a severe hailstorm developed in the Commerce City area.
- Radial velocity indication of shifting wind direction: 27 July 2009
- PPI scans were made at ~3 minute intervals as outflow from a passing convective precipitation area shifted the low-level winds through a ninety degree directional change over a 20 minute time period.
- Convective storm initiation: 9 August 2008
- The development of a series of new thunderstorms associated with a propagating thin line echo in the boundary layer is illustrated in a time lapse loop of PPI images.
- Radar: Tomorrow's Raingauge
- Examples of weather radar technology in the early 1950's are presented in a digital video version of a motion picture film produced at the Illinois State Water Survey.
- Brightband observations: 12 September 2009
- RHI scans were made through stratiform rain with embedded convective showers. A well-defined radar brightband pattern was evident. The brightband was depressed to lower heights and became thicker in the rain shower areas.
- Outflow development beneath a thunderstorm complex: 8 July 2008
- The CSU-CHILL radar conducted continuous RHI volume scans through an area of thunderstorms during the afternoon hours of 8 July 2008. An ~14 minute time segment of these RHI's captured the descent of a rear-inflow radial velocity feature.
- Time lapse photography of a cumulonimbus cloud: 2 July 2009
- Digital photographs of an area of developing thunderstorms were taken at two minute time intervals. While the photography was in progress, the CSU-CHILL radar made RHI scans through the associated echo region. A positive column was observed in the vigorously growing clouds.
- Dual-Doppler snapshot of a tornadic thunderstorm: 22 May 2008
- Horizontal wind fields are synthesized from radial velocities observed by the CSU-CHILL and KCYS WSR-88D radars.
Technical Notes
These articles deal with engineering topics of interest to users of CSU-CHILL data.
- X-band Solid State Transmitter Monitor User's Guide (TN-008)
- User's Guide to the solid-state X-band transmitter monitor developed at CSU-CHILL.
- Clock Generator User's Guide (TN-007)
- User's Guide to the programmable clock-generator design developed at CSU-CHILL.
- Frequency Synthesizer User's Guide (TN-006)
- User's Guide to the programmable Frequency Synthesizer design developed at CSU-CHILL.
- Radar Echoes from Wind Turbines (TN-004)
- Wind Turbines have become increasingly common in recent years. Their Doppler spectral characteristics are presented, along with an animation showing the repetitive patterns present in the turbine spectra. An audio presentation of the same data is also available, clearly showing the temporal variation of the echo. A brief discussion on the effects of wind turbine proliferation on radar meteorology is also presented.
- Coherent Leakage (TN-003)
- This is a short discussion on coherent leakage, discussing the various causes of coherent leakage in weather radar receivers. Some troubleshooting tips are also provided.
Recent Observations
- 20071211 Pawnee + KCYS test dual Doppler operations
- 20070423 Polarimetric Observations of a Mesocyclone
More Recent Observations articles
Ongoing Data Analysis
More Ongoing Data Analysis articles
Casebook
The CSU-CHILL Casebook contains summaries of CHILL operations, categorized by keywords, project names and by date of operation.
