CAFS

The Charged-coupled device Actinic Flux Spectroradiometers (CAFS) instruments were designed and developed in the ARIM laboratory for aircraft and ground-based operations. The instruments measure spectrally resolved down- and up-welling in situ ultraviolet and visible actinic flux from approximately 280-650 nm. Aircraft deployments include the NASA DC-8 and WB-57 aircraft. Previous scanning instruments also flew on the NASA P-3B and NOAA WP-3D aircraft.

Figure 1. CAFS zenith and nadir (downwelling and upwelling) optics on the NASA DC-8 aircraft in Broomfield, CO during the ATom campaign.

Figure 2. HARP zenith (downwelling) optics on the NSF/NCAR GV aircraft in Salina, KS during the NSF DC3 campaign.

Figure 3. CAFS zenith and nadir (downwelling and upwelling) optics on the NASA WB-57 aircraft in Houston, TX during the AVE-Houston campaign.

Figure 4. Downwelling optics in Utqiaġvik, Alaska during the OASIS campaign.