Western Channel Observatory

NERC National Capability of the Plymouth Marine Laboratory and Marine Biological Association

PML

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: Fri Sep 22 11:30:01 UTC 2017
View the current sunphotometer data log


Data

Data plots for 22/09/17

Size distributionOptical thickness
Size Distribution data - 22/09/17 Optical Thickness data - 22/09/17
Single Scattering AlbedoReal Refractive Index
Single Scattering Albedo - 22/09/17 Real Refractive Index - 22/09/17
Imaginary Refractive IndexPAR & Solar Irradiance (Met Station)
Imaginary Refractive Index - 22/09/17 No PAR & Solar irradiance data available.

No Meteorological station data available for 22/09/17


Select a date to view archived data

September 2017
SunMonTue WedThuFriSat
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
Change month 1 2 3 4 5 6 7 8 9101112
Change year 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017

To use these data contact Dr Tim Smyth

About Us

The WCO is a partnership between the Plymouth Marine Laboratory and the Marine Biological Association.

How are we funded?

The core work of the WCO is funded as part of the UK Natural Environmental Research Council's National Capability.

Contact Information

For more details about the WCO please contact:

Dr Tim Smyth
Western Channel Observatory
Plymouth Marine Laboratory
Prospect Place
Plymouth
Devon
PL1 3DH
email: tjsm@pml.ac.uk