csphot: Cimel Sunphotometer

The Cimel sunphotometer (CSPHOT) is a multi-channel, automatic sun-and-sky scanning radiometer that measures the direct solar irradiance and sky radiance at the Earth’s surface. It takes measurements at predetermined discrete wavelengths in the visible and near-infrared parts of the spectrum to determine atmospheric transmission and scattering properties. The CSPHOT only operates during daylight (sun above horizon).


  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


Wang W, W Gong, F Mao, and Z Pan. 2017. "Physical constraint method to determine optimal overlap factor of Raman lidar." Journal of Optics, , 10.1007/s12596-017-0427-9. ONLINE.

Chiu JC, Y Blanchard, P Hill, L Gregory, and R Wegener. 2017. DACCIWA Cloud-Aerosol Observations in West Africa Field Campaign Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-17-022.

Schwartz S, D Huang, and D Vladutescu. 2017. "High-resolution photography of clouds from the surface: Retrieval of optical depth of thin clouds down to centimeter scales." Journal of Geophysical Research: Atmospheres, 122(5), 10.1002/2016JD025384.

Painemal D, J Chiu, P Minnis, C Yost, X Zhou, M Cadeddu, E Eloranta, E Lewis, R Ferrare, and P Kollias. 2017. "Aerosol and cloud microphysics covariability in the northeast Pacific boundary layer estimated with ship-based and satellite remote sensing observations." Journal of Geophysical Research: Atmospheres, 122(4), 10.1002/2016JD025771.


Niple ER, HE Scott, JA Conant, SH Jones, FJ Iannarilli, and WE Pereira. 2016. "Application of oxygen A-band equivalent width to disambiguate downwelling radiances for cloud optical depth measurement." Atmospheric Measurement Techniques, 9(9), amt-9-4167-2016, 10.5194/amt-9-4167-2016.


Fielding MD, JC Chiu, RJ Robin, G Feingold, E Eloranta, EJ O'Connor, and MP Cadeddu. 2015. "Joint retrievals of cloud and drizzle in marine boundary layer clouds using ground-based radar, lidar and zenith radiances." Atmospheric Measurement Techniques, 8, 10.5194/amt-8-2663-2015.

Jundt R. 2015. ARM Mobile Facility Fact Sheet. DOE/SC-ARM-15-022.


Yano J and TP Lane. 2014. "Convectively generated gravity waves simulated by NAM-SCA." Journal of Geophysical Research: Atmospheres, 119(15), 10.1002/2013jd021419.

Chiu JC, JA Holmes, RJ Hogan, and EJ O'Connor. 2014. "The interdependence of continental warm cloud properties derived from unexploited solar background signals in ground-based lidar measurements." Atmospheric Chemistry and Physics, 14, 10.5194/acp-14-8389-2014.

Mann JA, JC Chiu, RJ Hogan, EJ O'Connor, TS L'Ecuyer, TH Stein, and A Jefferson. 2014. "Aerosol impacts on drizzle properties in warm clouds from ARM Mobile Facility maritime and continental deployments." Journal of Geophysical Research: Atmospheres, 119(7), 10.1002/2013jd021339.

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