Integrated Water Vapour Column Over Water
The integrated water vapour column over water is the main variable included in the iwv.nc file.
The following table provides the main characteristics of this variable including coverage, parameter ID, time latency, sampling and bands used in the associated product. The ancillary and auxiliary data provides the variables used during processing and are provided in Auxiliary Data Files (ADFs).
PRODUCT NAME | Integrated Water Vapour Column Over Sea |
PARAMETER ID | IWV |
PRODUCT LEVEL | 2 |
DESCRIPTION | Total amount of water vapour integrated over an atmosphere column and associated error estimates. |
PRODUCT PARAMETERS | |
COVERAGE | global |
PACKAGING | half-orbit |
LATENCY | NRT, NTC |
UNITS | kg m-2 |
RANGE | 1-70 |
SAMPLING | Spatial: approximately 300 m x 300 m (FR) and 1.2 km x 1.2 km (RR); spectral: N/A |
FORMAT% | 2-bytes / sample |
APPENDED DATA | Error estimate (1-byte integer) |
FREQUENCY | 1 product per orbit |
SIZE OF PRODUCT | Approx. 0.54 GB (FR), 35 MB (RR) |
ADDITIONAL INFORMATION | |
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INPUT BANDS | Oa18 (885 nm), Oa19 (900 nm) |
ANCILLARY AND AUXILIARY DATA | Polynomial LUT: illumination/viewing angle, surface type, aerosol optical depth (above water). |