Instrument Abbreviation:
UVT, UVB
Instrument Measurements:
a) Trace Gas
b) Cloud Physics/Aerosol
c) Radiation/Optical/Electrical
Hemispheric ultraviolet radiation
d) Additional Capabilities
Resource Person/Developer:
| Name: | Krista Laursen | Bruce Morley |
|---|---|---|
| Affiliation: | NCAR/ATD/RAF | NCAR/ATD/RAF |
| Phone: | (303) 497-1031 | (303) 497-1018 |
| Email: | krista@ucar.edu | bruce@ucar.edu |
Principle of Measurement:
Incoming radiation impinges on an opaque quartz disc where it is diffused and
passed through to the filter and detector. The design of the diffusing disc
gives the instrument a cosine response to hemispheric radiation. Several
centimeters behind the diffusing disk is an interference filter with a
passband of 0.295 to 0.385 uM. Immediately behind the filter is the selenium
barrier-layer photocell detector.
In situ/Remote/Flux Measurement:
Remote
Field projects in which the instrument has been used:
most
Aircraft Platform:
all
Inlet Configuration/Location:
fuselage-mounted, up- or down-looking
Calibration/Cross Calibration:
Annual detector certification by Eppley Laboratories, Inc.
Operator Requirements:
Data Collection:
external
Post-flight Data Validation, Processing, Hours per Flight Hour etc.
RAF NIMBUS software processor
Post-project validation by RAF Project Manager
Phisical Characteristics:
Dimensions: 14.6 cm diameter x 17.1 cm high
Weight: 1.8 kg
Power:
Other:
Response Time:
ms
Detection Limits:
0.4 W/M2
Accuracy:
Precision:
Limitations (such as altitude, airspeed, etc.)