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. These PDUs are often referred to as product granules.

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 min
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 = 3 min PDU
NTC = 3 min PDU

SL_2_FRP

Fire radiative power User

NTC

4.4 GB

NTC = 3 min PDU

SYN_2_AOD

Aerosol Optical Depth User

NTC

35 GB

Full orbit (pole to pole)

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.