Multi-Filter Rotating Shadowband Radiometer (MFRSR) with 7 Narrowband Channels: raw irradiances (mfrsr7nch)

Browse Data

The visible multifilter rotating shadowband radiometer (MFRSR) is a passive instrument that measures global and diffuse components of solar irradiance at six narrowband channels and one open, or broadband, channel. Direct irradiance is not a primary measurement, but is calculated using diffuse and global measurements.

To collect one data record, the MFRSR takes measurements at four different shadowband positions. The first measurement is taken with the shadowband in the nadir (home) position. The next three measurements are, in order, the first side-band, sun-blocked, and second side-band. The side-band measurements are used to correct for the portion of the sky obscured by the shadowband. The nominal wavelengths of the narrowband channels are 415, 500, 615, 673, 870, and 940 nm.

From such measurements, the atmosphere s aerosol optical depth at each wavelength can be inferred. In turn, these optical depths may be used to derive information about the column abundances of ozone and water vapor, as well as aerosol and other atmospheric constituents.

Location

North Slope Alaska - Central Facility, Barrow AK
  • Latitude: 71.323
  • Longitude: -156.615
  • Publication Date: 2021-06-11
  • Start Date: 2021-06-11
  • End Date: 2024-04-29
  • Last Updated: 2024-04-30

Instrument Mentor

DOI / Citation

https://doi.org/10.5439/1429369
Atmospheric Radiation Measurement (ARM) user facility. 2021. Multifilter Rotating Shadowband Radiometer (MFRSR7NCH). 2021-06-11 to 2024-04-29, North Slope Alaska (NSA) Central Facility, Barrow AK (C1). Compiled by G. Hodges, C. Herrera and B. Ermold. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1429369.