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, a broadband silicon detector 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.

Direct Normal Broadband Irradiance, broadband scale applied
Direct normal narrowband irradiance, filter 1

Southern Great Plains - Central Facility, Lamont, OK

• Latitude: 36.607322
• Longitude: -97.487643
• Publication Date: 2000-04-03
• Start Date: 2000-04-03
• End Date: 2021-08-27
• Last Updated: 2021-09-08

https://www.arm.gov/connect-with-arm/organization/instrument-mentors/list#nimfr

Gary Hodges

NOAA Earth System Research Laboratory

http://dx.doi.org/10.5439/1994766
Atmospheric Radiation Measurement (ARM) user facility. 2000. Normal Incidence Multifilter Radiometer (NIMFR). 2000-04-03 to 2021-08-27, Southern Great Plains (SGP) Central Facility, Lamont, OK (C1). Compiled by G. Hodges and C. Herrera. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1994766.