Minimize Units

The table below summarises the geophysical units used in the OLCI Level-2 products.


  Product Name Acronym Units
MARINE AND INLAND WATERS water-leaving reflectance Rxxx dimensionless
Total backscattering coefficient BBP560_M07
Total absorption coefficient ATOT443_NN m-1
Phytoplankton absorption coefficient APH443_NN m-1
CDM absorption coefficient ADG443_NN m-1
Humic material absorption coefficient AD443_NN m-1
Algal pigment concentration CHL_OC4ME
mg(Chl a).m-3
Total suspended matter concentration TSM_NN g.m-3
Diffuse attenuation coefficient KD490_M07
Heated layer depth ZHL m
Water transparency ZSD m
Photosynthetically active radiation PAR µEinstein.m-2.s-1
Aerosol optical thickness T865 Dimensionless
Aerosol Angström exponent A865 Dimensionless
Integrated water vapour column IWV kg.m-2
Ocean products quality and science flags WQSF Dimensionless
LAND OLCI Global Vegetal Index (faPAR) OGVI Dimensionless
Rectified Reflectance RC681, RC865 Dimensionless
OLCI Terrestrial Chlorophyll Index OTCI Dimensionless
Integrated water vapour column IWV kg.m-2
Land products quality and science flags LQSF Dimensionless

 Table 1: Units of OLCI Level-2 products


Other general quantities have the units shown in the table below.


Quantity Unit Notation Description
Irradiance 10-3 W.m-2.μm-1 IU spectral irradiance unit
Radiance 10-3μm-1 LU spectral radiance unit
Time jd or MJD jd or MJD modified Julian date 2000
10-6s (1.e-6)s microsecond
Distance 10-9m nm nanometre (wavelength)
10-6m μm micrometre (wavelength)
m m metre
103m km kilometre
Percentage % % percentage
Temperature K K degree Kelvin
C C degree Celsius
Angle ° deg degree
rad rad radian
Solid Angle sr sr steradian
Pressure hPa hPa hectoPascal
Ozone kg.m-2 kg.m-2 kilogram per square metre
Dimensionless quantities nc nc numerical counts
dl dl dimensionless
Multiple dimension quantities md md table constituted with different
physical parameters having
different units

Table 2: General quantities and their units.