Minimize Data Formats

The SLSTR data format follows the format defined for each Sentinel-3 product, i.e. the PDGS product specification, and is based on SENTINEL-SAFE. Each product package includes:

  • a manifest file containing a metadata section and a data object section
  • measurement data files
  • annotation data files (except for SL_2_WST_)
  • representation data files (XML files describing the binary information)(Level-0 only).

User product, generated for operational dissemination to Sentinel-3 users, has to be distinguished from the internal product, which is only used internally for normal processing.

Following the three main processes, there are three main data packages: Level-0, Level-1 and Level-2.

The Sentinel-3 user products are disseminated in Product Dissemination Units (PDU), in order to ease the online dissemination and data handling for the users.

The PDU is a portion of data and is defined per product type.

Name of
Product Package
Main Content Availability Latency Estimated Size per orbit Product Dissemination Unit
SL_0_SLT

Full resolution ISPs

Internal

NRT

7.2 GB

N/A

SL_1_RBT

Brightness temperatures and radiances

User

NRT/NTC

44.5 GB

Frame 3 mn
for both NRT and NTC

SL_2_WCT

Sea surface temperature
(single and dual view, 2 and 3 channels)

Internal

NRT/NTC

4.1 GB

N/A

SL_2_WST

Level-2P sea surface temperature (GHRSST-like)

User

NRT/NTC

2.2 GB

NRT = Frame 3 mn
NTC = Full orbit (from pole to pole)

SL_2_LST__

Land surface temperature parameters User

NRT/NTC

5 GB

NRT = Frame 3 mn
NTC = Full orbit (from pole to pole)

SL_2_FRP

Fire radiative power User

NRT/NTC

4.4 GB (TBC)

NRT = Frame 3 mn (TBC)
NTC = Full orbit (pole to pole) (TBC)

SL_2_AOD

Aerosol Optical Depth User

NRT

0.079 GB (TBC)

NRT + Frame 3 min (TBC)

Note: an AOD NTC product will be generated by the Level-2 synergy processor, exploiting the synergy between OLCI and SLSTR. Details on Level-2 SYN page

Table 1: Description and content of the different SLSTR product packages, the estimated size corresponds to a full orbit without consideration about compression, NRT/NTC less than 3/48 hours after measurement by satellite.