UW King Air Request Guidance Information

University of Wyoming King Air Overview

The University of Wyoming’s Beechcraft King Air 200T (UWKA) is a twin-engine turboprop aircraft instrumented to support various research missions, notably in cloud physics and boundary layer processes. The aircraft as a 3.7 hour endurance and a range of 1,800 nautical miles. The flight ceiling is 28,000 feet and the maximum payload is 1,850 lbs. In service since 1977, the aircraft is operated by the Donald L. Veal Research Flight Center within the UW Department of Atmospheric Science.

Configuration: Airborne research platform
Number of available systems: 1

University of Wyoming King Air and Airborne Instrumentation Contact

Dr. Jeff French / jfrench@uwyo.edu / (307) 766-4143


Estimated duration of each flight: Typically 4 hours maximum

Number of scientific observers on each flight: Limited seating

Airborne Instrumentation and Measurements

Each research payload is unique and will typically consist of some combination of UWY and user-supplied instrumentation. The tables in this document list available airborne sensors and measurements. Please note that different instruments require differing levels of support. Instrumentation is therefore separated into the following categories:

Standard Instrumentation: The UWYO King Air’s standard measurements, which are provided on all projects, include time and location, aircraft and atmospheric state parameters, and flight log files. Complete information on variables and instruments can be found at http://www.atmos.uwyo.edu/uwka/users/. Standard measurement data made available after quality control include:

3-D position, ground velocity, orientation, airspeed, flow angles, altitude
Pressure, winds, temperature, water vapor, liquid water

Instrumentation by Request: Before requesting instruments in this section, please consider that some require additional resources and may need special preparation, maintenance, or data handling and processing. The number and/or combination of instruments may exceed UWYO’s personnel and/or hardware resource limits. In addition, some instruments are mutually exclusive and may result in the inability to request others in the list. Please indicate requested instruments in the following tables.

User-supplied InstrumentationAll user-supplied equipment must meet Univeristy of Wyoming safety and design specifications. 

Instrument Available Measurement
Cloud Measurements
Rosemount 871FA Icing Rate
DMT LWC-100 Cloud Liquid Water
Gerber PVM-100 Cloud Liquid Water
Droplet Surface Area
Droplet Effective Radius
DMT Cloud Droplet Probe (CDP) Cloud Particle Size Distribution (2-50 μm)
Total Concentration
Aerosol Measurements
TSI 3010 CPC CN Concentration (> 15 nm)
TSI 3025 CPC UFN Concentration (> 5 nm)
Radiative Measurements
Eppley PSP (Pyranometer) Upwelling and Downwelling Radiation (0.285 – 2.800 mm)
Eppley PIR (Pyrgeometer) Upwelling and Downwelling Radiation (3.50 - 50 mm)
Heitronics KT-15.85 (Radiative Thermometer) IR Radiometric Surface Temperature
Primary Surface Temperature Measurement
Heitronics KT-19.85 (Radiative Thermometer) IR Radiometric Surface Temperature
Secondary Surface Temperature Measurement
Precludes Downward Lidar
Digital Video recording Standard forward-looking video is supplied for every project
Down-looking with date/time stamp may be requested by checking this box
Video is composite of 1 frame per second images
Cabin pressure Ambient cabin pressure
Recommended when in-cabin aerosol or gas phase measurements are required
Licor 7000 Water Vapor
Carbon Dioxide
MRI Universal Indicated Turbulence System Intensity of turbulence in inertial subrange
Canister-based Measurements
The UWYO King Air has four PMS-style wing canisters; therefore NO MORE THAN FOUR instruments can be selected as mission critical and/or low priority.
PMS FSSP-100 Cloud Particle Size Distribution (0.5 – 47mm; selectable)
Total Concentration
DMT Cloud Imaging Probe (CIP) Cloud Particle Images (>12.5 μm)
Cloud Particle Size Distribution
PMS OAP-2DC Cloud Particle Images (>25 μm)
Cloud Particle Size Distribution
PMS OAP-2DP Precipitation Particle Images (>200 μm)
Precipitation Particle Size Distribution
PMS SPP-200 (PCASP) w/ DMT Signal Processing Package Aerosol Particle Size Distribution (0.1-3.0 mm; 30 size bins)
Total Concentration
DMT Cloud Imaging Probe (CIP) Cloud Particle Images (>25 mm)
Cloud Particle Size Distribution
Faster electronics provide better estimate of smallest detectable particles


Data Files and Distribution

A basic data analysis center with LAN connection to the UWYO computers and access to the Internet will be provided in the field by the University of Wyoming. Support, if requested, may include real-time communications links to the aircraft via chat and real-time display of selected variables. Access to forecasting tools and preparations of operational forecasts are not usually included as part of the service.

Data are provided at 1 Hz rates. High-rate processing is available for some instruments. Initial preliminary data will be made available during the project. Following the conclusion of the experiment, the fully processed dataset will be made available. A Level 2 user file, complying with RAF Nimbus NetCDF conventions will be disseminated, including all standard measurements and data from selected instruments. Further information on data files and instruments can be found at http://www.atmos.uwyo.edu/uwka/users/. These files can be visualized via the NCAR AEROS software package (https://www.eol.ucar.edu/software/aeros).

UWKA data will be made publicly available once the data are quality controlled. If a PI wants to have exclusive access to these data for the first year, s/he has to officially request such a restriction via email from the University of Wyoming Flight Facility Manager (jfrench@uwyo.edu) eight weeks prior to the start of an experiment.)