Instrument : Cimel Sunphotometer (CSPHOT)
Beneficiary of Recovery Act funding.
Instrument Categories
Aerosols, Radiometric
General Overview
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. Measurements are taken at pre-determined discrete wavelengths in the visible and near-IR parts of the spectrum to determine atmospheric transmission and scattering properties. This instrument is weather-proof and requires little maintenance during periods of adverse weather conditions. It takes measurements only during daylight hours (sun above horizon).
For more details, see the External Data Center web page.
Output Datastreams
- csphotalm : Cimel Sunphotometer (CSPHOT): almucantars sky radiance data
- csphotalm1dubo : Cimel Sunphotometer (CSPHOT): Dubovik almucantar retrievals
- csphotaot : Cimel Sunphotometer (CSPHOT): aerosol optical thickness data
- csphotaotfilt : Cimel Sunphotometer (CSPHOT): aerosol optical thickness, filtered data
- csphotaotfiltqa : Cimel Sunphotometer (CSPHOT): aerosol optical thickness, filtered quality assurance data
- csphotpfn1 : Cimel Sunphotometer (CSPHOT): Aerosol phase functions derived from almucantar sky radiances
- csphotpp : Cimel Sunphotometer (CSPHOT): principal planes data
- csphotsize : Cimel Sunphotometer (CSPHOT): derived: aerosol size distributions
Primary Measurements
The following measurements are those considered scientifically relevant.
- Aerosol absorption
- Aerosol extinction
- Aerosol optical properties
- Particle number concentration
- Particle size distribution
- Precipitable water
- Shortwave narrowband radiance
Locations
- North Slope Alaska (NSA)
- Central Facility, Barrow AK (C1)
- Southern Great Plains (SGP)
- Central Facility, Lamont, OK (C1)
- Tropical Western Pacific (TWP)
- Central Facility, Darwin, Australia (C3)
- Central Facility, Manus I., PNG (C1)
- Central Facility, Nauru Island (C2)
- ARM Mobile Facility (FKB)
- Black Forest, Germany (M1)
- ARM Mobile Facility (GAN)
- Gan Airport, Gan Island, Maldives (M1)
- ARM Mobile Facility (GRW)
- Graciosa Island, Azores, Portugal (M1)
- ARM Mobile Facility (HFE)
- Shouxian, Anhui, China (M1)
- ARM Mobile Facility (NIM)
- Niamey, Niger (M1)
- ARM Mobile Facility (PGH)
- ARIES Observatory, Nainital, Uttarkhand, India (M1)
- ARM Mobile Facility (SBS)
- Steamboat Springs CO, Valley Site (M1)
Contact(s)
Laurie Gregory
(631) 344-2266
laurie.gregory@bnl.gov
Lynn Ma
associate
(631) 344-3813
malynn@bnl.gov
Richard Wagener
associate
(631) 344-5886
wagener@bnl.gov
