CEOS ANALYSIS READY DATA


CEOS Analysis Ready Data (CEOS-ARD) are satellite data that have been processed to a minimum set of requirements and organized into a form that allows immediate analysis with a minimum of additional user effort and interoperability both through time and with other datasets.



Information for:

producersData Producers

distributorsData Distributors

usersData Users

CEOS-ARD Framework


Many satellite data users lack the expertise, infrastructure and internet bandwidth to efficiently and effectively access, preprocess, and utilize the growing volume of space-based data for local, regional, and national decision-making. Furthermore, even sophisticated users of EO data typically invest a large proportion of their effort into data preparation. This is a major barrier to full and successful utilization of space-based data, and threatens the success of major global and regional initiatives supported by the Committee on Earth Observation Satellites (CEOS). As data volumes grow, this barrier is becoming more significant for all users.

Countries and international organizations have expressed a desire for support from CEOS to facilitate access to and processing of satellite data into CEOS Analysis Ready Data (CEOS-ARD) products. Systematic and regular provision of CEOS-ARD will greatly reduce the burden on global satellite data users.

The CEOS-ARD Governance Framework covers:

Definition


The definition of CEOS-ARD is not exclusive or prescriptive. The definition of CEOS-ARD reflects the attributes of fundamental measurement products for the majority of global remote sensing users with land imaging applications, and are the minimum level required to support time series analysis and data interoperability.

Product Family Specs


Detail specific 'Threshold' and 'Target' requirements for:

– General Metadata
– Per-pixel Metadata
– Radiometric and Atmospheric Corrections
– Geometric Corrections

A Product Family Specification Template has been developed to provide a starting point for future PFS, to ensure commonality in layout, general structure, interpretation and approach. It provides a foundation and common suite of assessment factors for all PFS.

Product Assessments


Assess how well the specific product complies with each of the metadata and calibration criteria in the Product Family Specification. Includes a description of ‘how’ it complies.

The CEOS Working Group on Calibration & Validation (WGCV) has defined formal processes for how these assessments will be carried out, including the peer reviews that will be undertaken by the WGCV.

Current Product Family Specifications


PFS Type Version Download Metadata Spec Last Updated
Surface Reflectance Optical 5.0 PDF | Word
8 June 2020
Surface Temperature Optical 5.0 PDF | Word 8 June 2020
Normalised Radar Backscatter Radar 5.5 PDF | Word XLSX 13 May 2022
Polarimetric Radar Radar 3.5 PDF | Word XLSX 13 May 2022
Aquatic Reflectance Optical 1.0 PDF | Word 23 February 2022

In-progress Product Family Specifications


PFS Type ETA
Nighttime Lights Surface Radiance Optical Q3 2021
Ocean Radar Backscatter Radar Q3 2022
Geocoded Single-Look Complex (GSLC) Radar 2023
Interferometric Radar (INSAR) Radar 2023
LiDAR Terrain and Canopy Top Height Optical 2023

CEOS Analysis-Ready Datasets


The following table summarises all of the satellite EO datasets that have been assessed as CEOS Analysis Ready Data (CEOS-ARD). DOI links are provided for access, along with links to further information, sample products, and the completed CEOS-ARD self-assessment and peer review outcome documents.

Product CEOS-ARD Type PFS Version Agency Mission(s) Threshold Specification Target Specification Access (DOI) Info Self Assessment Peer Review Sample Products
Landsat Collection 2 Surface Reflectance v5.0 USGS Landsat 4, 5, 7, 8, 9
100%

81%
Landsat 4-5, 7, 8 Link PDF PDF Link
Landsat Collection 2 Surface Temperature v5.0 USGS Landsat 4, 5, 7, 8, 9
100%

83%
Landsat 4-5, 7, 8 Link PDF PDF Link
Sentinel-2 Level-2A Surface Reflectance v5.0 ESA Sentinel-2A, 2B
100%
Not assessed Link Link PDF PDF Link
EnMAP Surface Reflectance v5.0 DLR EnMAP
100%
Not assessed TBA Link PDF PDF Link
Sentinel-1 RTC Normalised Radar Backscatter v5.5 Sinergise & Digital Earth Africa Sentinel-1
(A, B)

100%
Not assessed Link Link PDF PDF Link
Landsat Collection 2 U.S. ARD Surface Reflectance v5.0 USGS Landsat 4, 5, 7, 8, 9
100%
Not assessed Landsat 4-5, 7, 8 Link PDF PDF Link
Landsat Collection 2 U.S. ARD Surface Temperature v5.0 USGS Landsat 4, 5, 7, 8, 9
100%
Not assessed Landsat 4-5, 7, 8 Link PDF PDF Link

Under Peer Review


Product CEOS-ARD Type PFS Version Agency Mission(s) Access (DOI) Info Self Assessment Peer Review Sample Products
Sentinel-2 Level-2A (E84) Surface Reflectance v5.0 Element 84 Sentinel-2A, 2B TBA TBA TBA TBA TBA

Under Development / Assessment


Product CEOS-ARD Type PFS Version Agency Mission(s) Access (DOI) Info Self Assessment Peer Review Sample Products
ALOS-2 PALSAR-2 Global Mosaics (RTC) Normalised Radar Backscatter v5.5 JAXA ALOS-2 PALSAR-2 TBA Link Ongoing TBA TBA
Sentinel-1 NRB Normalised Radar Backscatter v5.5 ESA Sentinel-1
(A, B)
TBA Link TBA TBA TBA
NovaSAR-1 RTC Normalised Radar Backscatter v5.5 CSIRO NovaSAR-1 TBA Link Ongoing TBA TBA
Harmonised S-2 &
L-8/9 (Level-2H)
Surface Reflectance v5.0 ESA Sentinel-2A, 2B; Landsat 8, 9 TBA TBA TBA TBA TBA
Fused S-2 &
L-8/9 (Level-2F)
Surface Reflectance v5.0 ESA Sentinel-2A, 2B; Landsat 8, 9 TBA TBA TBA TBA TBA
SPOT 1-7 Surface Reflectance Surface Reflectance v5.0 SANSA SPOT 1, 2, 3, 4, 5, 6, 7 TBA TBA TBA TBA TBA

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