Sentinel-3 OLCI True Colour, 27 Jan 10:00 UTC

OLCI Processing Baselines

Timeline of the OLCI processing baselines of Sentinel-3.

Last Updated

16 February 2023

Published on

10 October 2019

OLCI processing baselines of Sentinel-3 (L1B - Baseline collection 002, L2 – Baseline collections 003/002)


Processing baseline	IPF versions	Product notice	PB deployment date	Dataset (sensing time & server)	Major changes
L2 OL__L2M.003.02.00	7.02	Sentinel-3 Product Notice – OLCI Level-2 Ocean Colour	19/04/2022	Operational From: 19/04/2022 To: Current EOP EUMETCast	OLCI L2 Marine change implements a new Processing Baseline strategy and makes the Baseline number available in: NetCDF data files, as a new global attribute: processing_baseline Manifest file, as a new field: processingBaseline The new OLCI L2 Marine Processing Baseline has the following format: OL__L2M.xxx.yy.zz where xxx: baseline collection. yy: minor changes in IPF or in static ADF (starting from zero for a new baseline collection). zz: changes in L0 or processing parametrization which are not expected to affect the quality of the products.
L1 OL__L1_.002.22.00	OLCI L1 (OL_1): 06.12	L1 OL__L1_.002.22.00	20/01/2022	Operational From: 20/01/2022 To: Current EOP EUMETCast	OLCI L1 change implements a new Processing Baseline strategy and makes the Baseline number available in: NetCDF data files, as a new global attribute. Manifest file, as a new field. The new OLCI L1 Processing Baseline has the following format: OL__L1_.xxx.yy.zz where xxx: baseline collection. yy: minor changes in IPF or in static ADF (starting from zero for a new baseline collection). zz: changes in L0 or processing parametrization which are not expected to affect the quality of the products.
PB 3.01	OLCI L1 (OL_1): 06.11	N/A	18/11/2021	Operational From: 18/11/2021 To: Current EOP EUMETCast	OLCI L1 processing baseline 3.01 introduces changes in the OLCI Calibration Auxiliary Data Files (OL_1_CAL_AX): OLCI-A has an updated radiometric gain model from an extended calibration dataset OLCI-B has a revised solar diffuser ageing model and an updated radiometric gain model from an extended calibration dataset.
L1 S3B-1.57	OLCI L1 (OL_1): 06.11 OLCI L2 (OL_2): 07.01	N/A	29/07/2021	Operational From: 29/07/2021 To: Current for Level-1 S3A, 29/07/2021 for Level-1 S3B Current for Level-2 EOP EUMETCast	Minor changes to the geometric and radiometric calibration for OLCI-B.
L1 S3A-2.76 and S3B-1.54 L2 S3A and S3B Collection-3 OL_L2M.003.01	OLCI L1 (OL_1): 06.11 OLCI L2 (OL_2): 07.01	Sentinel-3 Product Notice – OLCI Level-1B Sentinel-3 Product Notice – OLCI Level-2 Ocean Colour	28/04/2021	Operational From: 28/04/2021 To: Current EOP EUMETCast	OLCI L1 Processing Baseline 2.76A/1.54B introduces processor changes that do not have immediate impact on OLCI Level-1B products. The changes will however allow improved detection and processing through instrument anomalies when they happen, and the processing of OLCI-A early mission data affected by a NAVATT time stamp anomaly. OLCI L2 Baseline Collection 3.01 includes two small processing changes to the major release of OLCI L2 Collection 3.00: retrieval of the Total Suspended Matter product extended from 100 up to 400 g/m3; reduced anomalous flagging of coastlines by the CLOUD_AMBIGUOUS flag in FR products.
Collection 3 OL_L2M.003.00	OLCI L2 (OL_2): 07.00	Sentinel-3 Product Notice – OLCI Level-2 Ocean Colour	16/02/2021	Operational From: 16/02/2021 To: Current EOP EUMETCast	Major update of OLCI Level-2 Ocean Colour processing. It constitutes OLCI L2 Collection-3, OL_L2M.003.00, delivering consistent OLCI-A and –B Ocean Colour products, and introducing algorithm improvements, including System Vicarious Calibration gains updated in OLCI-A and OLCI-B; revised Bright Pixel Correction, new Chlorophyll Index algorithm, and updated whitecap correction in the open water processing chain; new Neural Network v.2 in the complex water processing chain, and new and updated flags, with a new flag recommendation for users. Details are available in Collection-3 Report.
PB 2.74/1.52	OLCI L1 (OL_1): 06.09 OLCI L2 (OL_2): 06.13	N/A	10/12/2020	Operational From: 10/12/2020 To: Current EOP	This Processing Baseline introduces in OLCI Level-1 processing a regular use of most recent dark measurements to limit the impact of periodic noise in the dark signal. It also includes updates in geometric calibration parameters for the year 2021 and in meteo data interpolation.
PB 2.71/1.48	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.13	N/A	15/10/2020	Operational From: 29/10/2019 To: 17/12/2019 EOP	Updates to radiometric evolution model and dark correction
PB 2.58/1.38	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.13	N/A	16/04/2020	Operational From: 16/04/2020 To: 15/10/2020 EOP	Updates to geolocation and dark correction
PB 2.58/1.34	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.13	N/A	17/12/2019	Operational From: 17/12/2019 To: 16/04/2020 EOP	Updates to geolocation and dark correction
PB 2.58/1.30	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.13	L1B PN (2.58/1.30) S3A/S3B	29/10/2019	L1 Reprocessed From: 15/05/2018 To: 29/10/2019 Data Store Operational From: 29/10/2019 To: 17/12/2019 EOP	Reprocessing of level 1 data for OLCI on Sentinel-3B
PB 2.55/1.27*	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.13	L1 PN (2.55/1.27) *S3A/S3B	30/07/2019	Operational From: 30/07/2019 To: 29/10/2019 EOP	Updated geometric calibration to correct for mis-registration at camera interfaces for OLCI-B. Update of dark correction tables to minimise impact of periodic noise for OLCI-A.
PB 2.48/1.20*	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.13	L1 PN (2.48/1.20) *S3A/S3B	11/04/2019	Operational From: 11/04/2019 To: 29/07/2019 EOP	Revision of the radiometric model on the basis of extended radiometric calibration dataset. Update of dark correction tables to minimise impact of periodic noise.
PB 2.43/1.15*	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.13	L2 PN (2.43/1.15) *S3A/S3B	20/03/2019	Operational From: 20/03/2019 To: 10/04/2019 EOP	Initial public release of OLCI-B L2 data. Identical processing for OLCI-A and OLCI-B but OLCI-B system vicarious gains are set to 1.
PB 2.42/1.14*	OLCI L1 (OL_1): 06.08 OLCI L2 (OL_2): 06.11	L1 PN (2.42/1.14) *S3A/S3B	12/12/2018	Operational From: 12/12/2018 To: 19/03/2019 EOP	Update of dark correction tables to minimise impact of periodic noise. Initial public release of OLCI-B L1B data.
PB 2.29	OLCI L1 (OL_1): 06.07 OLCI L2 (OL_2): 06.11	L1 PN (2.29)	14/03/2018	Operational From: 14/03/2018 To: 11/12/2018 EOP	Updated geometric calibration to correct for geolocation drift. Update of dark correction tables to minimise impact of periodic noise.
PB 2.23	OLCI L1 (OL_1): 06.07 OLCI L2 (OL_2): 06.11	L1 PN (2.23) L2 PN (2.23)	L1: 11/10/2017 L2: 29/11/2017	Reprocessed "Autumn 2017": From: 25/04/2016 To: 29/11/2017 Data Store Operational From: 29/11/2017 (L1: 11/10/2017) To: 13/03/2018 EOP	Revision of the radiometric model on the basis of extended radiometric calibration dataset. Dark correction revised to reduce horizontal striping. Dark offset tables revised to filter for high energy particles. Improvements in processing over inland waters for Complex Water products.
PB 2.16	OLCI L1 (OL_1): 06.07 OLCI L2 (OL_2): 06.10	L1 PN (2.16) L2 PN (2.16)	05/07/2017	Operational From: 05/07/2017 To: 28/11/2017 EOP	OLCI-A radiometric calibration improved to self-standing radiometric model of long-term instrument sensitivity. Initial public release of OLCI-A L2 data. Significant improvements to cloud flagging. System vicarious gains applied to OLCI-A.

For a complete list of changes, please consult the product notices listed above.

Instrument anomalies

Anomalously low radiances have been identified in OLCI Level-1B products at the edges of bright, saturated areas. These low radiances occur in some bands and do not correspond to geophysical expectations. The anomalies are present over bright clouds in both OLCI-A and OLCI-B. However, no impact on OLCI operational Level-2 products has been determined because L2 products are not available over bright surfaces, see this detailed description of the anomaly.