Appendix A

Abbreviations

ASOS                          Automated Surface Observing System

ATD                            Atmospheric Technology Division

CCN                            Cloud Condensation Nuclei

CSU                            Colorado State University

HEAT                          Houston Environmental Aerosol Thunderstorm

IOP                              Intensive Observation Period

LMA                            Lightning Mapping Array

METROMEX              METROpolitan Meteorological EXperiment

MGLASS                    Mobile GPS/Loran Atmospheric Sounding System

NCAR                         National Center for Atmospheric Research

NLDN                         National Lightning Detection Network

NMIMT                      New Mexico Institute of Mining and Technology

NSF                            National Science Foundation

NSSL                          National Severe Storms Laboratory

NWS                           National Weather Service

PPI                              Plan Position Indicator

RAP                            Research Applications Program           

RHI                             Range Height Indicator

RSO                            Rapid Scan Operations

SDSMT                       South Dakota School of Mines and Technology

S-Pol                           S-band dual Polarization Doppler radar

TAMU                         Texas A&M University

TAOS                          Tethered Atmospheric Observation System

TNRCC                       Texas Natural Resource Conservation Commission

TOA                            Time Of Arrival

UHI                             Urban Heat Island

UWKA                        University of Wyoming King Air

VCP                            Volume Coverage Patterns

VIRAQ                        VME-based Integrated Radar AcQuisition system

VOR/DME                  VHF Omni-directional Range/Distance Measuring Equipment

VORTAC                    VHF Omni-directional Range/TACtical air navigation

WFO                           Weather Forecast Office

WMI                           Weather Modification, Inc.