Award Abstract #0118021
The CSU-CHILL Radar Facility

NSF Org:	ATM Division of Atmospheric Sciences
Initial Amendment Date:	September 27, 2001
Latest Amendment Date:	August 30, 2007
Award Number:	0118021
Award Instrument:	Cooperative Agreement
Program Manager:	Clifford A. Jacobs ATM Division of Atmospheric Sciences GEO Directorate for Geosciences
Start Date:	September 1, 2001
Expires:	August 31, 2008 (Estimated)
Awarded Amount to Date:	$4388269
Investigator(s):	Steven Rutledge rutledge@radarmet.atmos.colostate.edu (Principal Investigator) V. Chandrasekar (Co-Principal Investigator) V. Bringi (Co-Principal Investigator)
Sponsor:	Colorado State University 601 S Howes St Fort Collins, CO 80523 970/491-1101
NSF Program(s):	LOWER ATMOSPHER OBSER FACILITI, PHYSICAL & DYNAMIC METEOROLOGY, COMPUTING FACILITIES
Field Application(s):	0000099 Other Applications NEC
Program Reference Code(s):	OTHR, 4444, 0000
Program Element Code(s):	1529, 1525, 1520

ABSTRACT

The project provides for continued operation of the CHILL radar as a national facility. The radar allows cutting edge research into convective storm initiation and evolution and will enhance scientific understanding of storm microphysics. The proposed cooperative agreement specifies the management, staffing, testing, operation, technical upgrades and educational and outreach activities for the proposed 5 year period.

The project is an interdisciplinary activity between the Departments of Atmospheric Science and Engineering, and it serves the broad research community as a primary radar remote sensing facility. The combination of engineering and atmospheric sciences gives faculty and students the opportunity to explore technical and scientific topics in radar meteorology. In research projects CHILL also provides high quality, real-time dual doppler information to coordinate the flight of a storm penetration aircraft in and around convective storms.

Enhanced use of the Internet allows real time access of data from any institution and faculty and students can operate the CHILL from remote locations. The project provide far-reaching educational opportunities.

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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A. J. DeCaria, K. E. Pickering, G. L. Stenchikov, J. R. Scala, J. L. Stith, J. E. Dye, B. A. Ridley, and P. Laroche.  "A Cloud-Scale Model Study of Lightning-Generated NOx in an Individual Thunderstorm During STERAO-A,"  Journal of Geophysical Research,  v.105,  2000,  p. 11601.

Baldini, L., E. Gorgucci, and V. Chandrasekar.  "Methodology for C-band Polarimetric Radars,"  Proceedings of ERAD (2004),  2004,  p. 62.

Bolen, S. M., and V. Chandrasekar.  "Methodology for Aligning and Comparing Spaceborne Radar and Ground-Based Radar Observations.,"  Journal of Atmospheric and Oceanic Technology,  v.20,  2003,  p. 647.

Bringi, V. N., V. Chandrasekar, D. Zrnic, and C. W. Ulbrich.  "The Need to Represent Raindrop Size Spectra as Normalized Gamma Distributions for the Interpretation of Polarization Radar Observations.,"  Journal of Applied Meteorology,  v.42,  2003,  p. 1184.

Chandrasekar, V., A. Hou, E. Smith, V.N. Bringi, S.A. Rutledge, and E. Gorgucci.  "Use of Dual Polarization radar in Validation of Satellite Precipitation Measurements:,"  Bulletin of the American Meteorological Society,  v.89,  2008,  p. 1127.

Chandrasekar, V., R. Meneghini, and I. Zawadski.  "Global and Local Precipitation Measurements by Radar,"  Meteorological Monographs,  v.30,  2003,  p. 215.

Depue, T.K., P.C. Kennedy, and S.A. Rutledge.  "The Performance of the Hail Differential Reflectivity (HDR) Polarimetric Radar Hail Indicator,"  Journal of Applied Meteorology and Climatology,  v.46,  2007,  p. 1290.

E. Gorgucci, G. Scarchilli, V. Chandrasekar, and V. N. Bringi.  "Rainfall Estimation from Polarimetric Radar Measurements: Composite Algorithms Immune to Variability in Raindrop Shape-Size Relation,"  Journal of Atmospheric and Oceanic Technology,  v.18,  2001,  p. 1773.

E. Gorgucci, G. Scarchilli, V. Chandrasekar, and V. N. Bringi.  "Measurement of Mean Raindrop Shape from Polarimetric Radar Observations,"  Journal of Atmospheric Science,  v.57,  2000,  p. 3406.

E. Gorgucci, V. Chandrasekar, G. Scarchilli, and S. Bolen.  "Variation of Mean Raindrop Shape Derived from Polarimetric Radar Measurements,"  Journal of Atmospheric Research,  v.59-60,  2001,  p. 283.

E. Gorgucci, V. Chandrasekar, V. N. Bringi, and G. Scarchilli.  "Estimation of Raindrop Size Distribution Parameters from Polarimetric Radar Measurements,"  Journal of the Atmospheric Sciences,  v.59,  2002,  p. 2373.

F. L. Ogden, H. O. Sharif, S. U. S. Senarath, J. A. Smith, M. L. Baeck, and J. R. Richardson.  "Hydrologic Analysis of the Ft. Collins, Colorado Flash Flood of 1997,"  Journal of Hydrology,  v.228,  2000,  p. 82.

H Liu and V. Chandrasekar.  "Classification of Hydrometeors Based on Polarimetric Radar Measurements: Development of Fuzzy Logic and Neuro-Fuzzy Systems, and In Situ Verification,"  Journal of Atmospheric and Oceanic Technology,  v.17,  2000,  p. 140.

J. E. Dye et al..  "An Overview of the Stratospheric-Tropospheric Experiment: Radiation, Aerosols, and Ozone (STERAO-A) - Deep Convection Experiment with Results for the July 10, 1996 Storm,"  Journal of Geophysical Research,  v.105,  2000,  p. 10023.

J. E. Nachamkin, R. L. McAnelly, and W. R. Cotton.  "Interactions Between a Developing Mesoscale Convective System and Its Environment. Part I: Observational Analysis,"  Monthly Weather Review,  v.128,  2000,  p. 1205.

J. Hubbert and V. N. Bringi.  "The Effects of Three-Body Scattering on Differential Relflectivity Signatures,"  Journal of Atmospheric and Oceanic Technology,  v.17,  2000,  p. 51.

J. M. Straka, D. S. Zrnic, A. V. Ryzhkov.  "Bulk Hydrometeor Classification and Quantification Using Polarimetric Radar Data: Synthesis of Relations,"  Journal of Applied Meteorology,  v.39,  2000,  p. 1341.

L. D. Carey and S. A. Rutledge.  "The Relationship Between Precipitation and Lightning in Tropical Island Convection: A C-Band Polarimetric Study,"  Monthly Weather Review,  v.128,  2000,  p. 2687.

Lang, T. J., J. Miller, M. Weisman, S. A. Rutledge, L. J. Barker, V. N. Bringi, V. Chandrasekar, A. G. Detwiler, N. J. Doesken, J. Helsdon, C. Knight, P. Krehbiel, W. A. Lyons, D. MacGorman, E. Rasmussen, W. Rison, W. D. Rust, and R. Thomas.  "The Severe Thunderstorm Electrification and Precipitation Study (STEPS),"  Bulletin of the American Meteorological Society,  v.85,  2004,  p. 1107.

Lang, T. J., S. A. Rutledge, and J. Stith.  "Observations of Quasi-Symmetric Echo Patterns in Clear Air with the CSU-CHILL Polarimetric Radar,"  Journal of Atmospheric and Oceanic Technology,  v.21,  2004,  p. 1182.


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