Instrument : Normal Incidence Multifilter Radiometer (NIMFR)
The Normal Incidence Multifilter Radiometer (NIMFR) is a ground-based instrument that provides a time series of the shortwave spectral direct normal irradiance. Additionally, there is a broadband silicon detector that can crudely measure the direct normal broadband irradiance. These irradiance measurements can be used to infer clear sky aerosol optical depth and columnar abundances of ozone and water vapor. The NIMFR is one of a class of instruments known as sun photometers.
Output Value-Added Products
This instrument is an input to the following value-added products, which provide improved measurements or derived quantities.
- mfrsraod1mich : MFRSR: derived total & aerosol optical depth from 1st Michalsky algorithm
- nimfraod1mich : NIMFR: derived total & aerosol optical depth from 1st Michalsky algorithm
- sasheniraod : Shortwave Array Spectroradiometer-Hemispheric, NIR Aerosol Optical Depths
- sashevisaod : Shortwave Array Spectroradiometer-Hemispheric, VIS Aerosol Optical Depths
- nimfr : Normal Incidence Multi-Filter Radiometer (NIMFR): direct normal irradiances
The following measurements are those considered scientifically relevant.
|North Slope Alaska|
|NSA||C1||Browse Data||Browse Plots||Central Facility, Barrow AK|
|NSA||C2||Browse Data||Central Facility, Atqasuk AK||retired|
|Southern Great Plains|
|SGP||C1||Browse Data||Browse Plots||Central Facility, Lamont, OK|