Microwave Radiometer (MWR) - 23.8 GHz and 31.8 GHz, passive; integrated
column water vapor and liquid amounts overhead
Millimeter-wavelength temperature profiler (MMTP) - ATTEX, temperature
profiles from near surface to height of 300-600 m
Cloud Observation Instruments
Vaisala ceilometer (VCEIL) - 0.905 micrometer wavelength; detects cloud
base height up to heights of 7.5 km
Whole-sky imager (WSI) - daytime and possibly nighttime; cloud fraction,
number, and related statistics
Downwelling Radiation Properties
Extended range atmospherically emitted radiance interferometer (ER-AERI) -
spectra of zenith absolute radiance at wavelengths from about 4 micrometers to
20 micrometers, 1.3-deg field of view
Infrared thermometer (IRT) - zenith sky temperatures at 223K to 323K in
wavelength band 9.6-11.5 micrometers
Multifilter rotating shadowband radiometer (MFRSR) - solar optical depths
in six narrow wavebands (0.415, 0.500, 0.665, 0.862, 0.940 micrometers);
derived parameters
Normal incidence multifilter radiometer (NIMFR) - direct-beam solar
irradiance in direct beam in six narrow wavebands; solar optical depths,
derived parameters
Precision Solar Pyranometer, unshaded (PSP/DS) - broadband total
hemispherical solar irradiance
Precision Solar Pyranometer, shaded (PSP/DD) - diffuse broadband
hemispherical solar irradiance
Pyrheliometer (NIP) - broadband direct-beam solar normal incidence
irradiance
