The table below summarises the geophysical units used in the OLCI Level-2 products.
MARINE AND INLAND WATERS | water-leaving reflectance | Rxxx | dimensionless |
Total backscattering coefficient | BBP560_M07 BBP443_NN | m-1 |
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 CHL_NN | mg(Chl a).m-3 |
Total suspended matter concentration | TSM_NN | g.m-3 |
Diffuse attenuation coefficient | KD490_M07 KD490_L05 | m-1 |
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.
Irradiance | 10-3 W.m-2.μm-1 | IU | spectral irradiance unit |
Radiance | 10-3 W.m-2.sr-1.μm-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.