Sunphotometer data from PML

In May 2001 a PREDE POM01-L was installed on the roof of the Plymouth Marine Laboratory to continue the atmospheric correction research of the PML Remote Sensing Group. This was to replace the AERONET CIMEL sunphotometer situated at Rame Head which was decommissioned in 1999. The instrument operates at 7 wavelengths (315, 400, 500, 670, 870, 940 and 1020nm) and scans at pre-set angles away from the solar disk to determine, using the inversion code of Nakajima et al. (2006), various properties of tiny particles called aerosols within the atmospheric column. From these measurements useful atmospheric aerosol parameters such as the Aerosol Optical Thickness (AOT), aerosol size distribution and single scattering albedo can be calculated. Marine aerosols tend to be bigger (D > 1µm) than those generated over the land (0.01 < D < 1µm) and are of a different chemical composition; marine aerosols are salt particles whereas terrestrial aerosols are sulphate compounds.

Live status

Sunphotometer is alive: Mon Dec 23 20:20:02 UTC 2024 Measurements taken today
View the current sunphotometer data log

Data

Data for 31/06/13 is not available.

Data plots for 30/06/13

Size distribution	Optical thickness
Single Scattering Albedo	Real Refractive Index
Imaginary Refractive Index	PAR & Solar Irradiance (Met Station)

Click here to view Meteorological station data available for 30/06/13

Archived data

Select a date to view archived data. Underlined numbers shows data is avaliable.

To use this data please contact us