CSU CHILL

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National Weather Radar Facility
The CSU-CHILL National Weather Radar Facility, located in Greeley, CO, is an advanced, transportable dual-polarized S-band weather radar system. The facility is operated by Colorado State University, under the sponsorship of the National Science Foundation and the University.

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RHI sweep containing a descending rear inflow jet pattern (white arrow) in the radial velocity field. The time evolution of this pattern was observed in a series of RHI scans made at approximately 2 minute intervals by the CSU-CHILL radar. (more)

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Solar Halo Solar Halo

Solar halo seen at the CSU-CHILL site on Jan 4, 2010. The 22 degree halo is most prominent, with parhelia (sun dogs) on either side. An upper tangent arc is visible above the sun. The parhelic circle is faintly visible, running parallel to the horizon. Also visible (but not pictured here) are 46 degree arcs.

Photo credit: Jim George
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