Data Access


Table 1. Data Products
Data Product Description
Level 0 Reconstructed, unprocessed PRISM digitized numbers (DN) at full resolution with GPS
Level 1 Calibrated spectral radiance with geolocation information including illumination and observation geometry
Level 2 Benthic reflectance generated following atmosphere and water column radiative transfer inversion with geolocation, support processing information and flags
Level 3 Benthic cover, i.e., seafloor classified into coverage of benthic types (coral, algae, sand) with geolocation, uncertainties, and flags
Level 4 Benthic primary productivity and calcification
Ancillary In Situ Optical, benthic cover, and benthic community productivity and calcification calibration/validation



Table 2. Data Availability
Data Product CORAL SDS Latency OB.DAAC Latency
Level 0 ≤ 3 months Provided by CORAL SDS at investigation closeout
Level 1 ≤ 3 months
Level 2 ≤ 9 months
Level 3 ≤ 12 months
Level 4 PI/Co-Is generated Provided by PI and Co-I(s) at investigation closeout
Ancillary In Situ


Science Data System

CORAL Level 1-3 data products are made publicly available through the CORAL Science Data System (SDS) per the latencies described in the table above following each campaign. The CORAL SDS is located at JPL and all data products will be stored at the SDS through the life of the mission. CORAL will operate over a three-year period during which raw instrument data are acquired and then processed into science data products by the SDS and the science team (see Figure 1 for SDS architecture).

At investigation closeout (July-September 2018), CORAL Level 0-4 data products will be made publicly available via the Ocean Biology Distributed Active Archive Center (OB.DAAC). Ancillary in situ data will be made publicly available via the SeaWiFS Bio-Optical Archive and Storage System (SeaBASS).

Instrument 2
Figure 1. SDS data processing infrastructure and functional architecture


Data Algorithms

CORAL Level 0-3 science data products will be generated on the SDS production system using science software developed on the SDS Testbed. The science software is based on algorithms for each product described in the Algorithm Theoretical Basis Documents (ATBDs).



Data Management

CORAL data management is governed by NASA's Earth Science Data Policy.



Data Citation and Acknowledgement

Please provide citation and acknowledgement of the use of CORAL data products, images and services in publications or presentations. It is important for NASA, it's missions and our science data product providers and partners. Example citations are shown below.

CORAL Mission. YYYY. Level 0 Portable Remote Imaging SpectroMeter (PRISM) digitized number data. Ver. XX. CORAL SDS, CA, USA. Accessed: DD-MM-YYYY (date you accessed the data). DOI or leave blank if the dataset does not yet have a DOI.

CORAL Mission. YYYY. Level 1 Portable Remote Imaging SpectroMeter (PRISM) radiance data. Ver. XX. CORAL SDS, CA, USA. Accessed: DD-MM-YYYY (date you accessed the data). DOI or leave blank if the dataset does not yet have a DOI.

CORAL Mission. YYYY. Level 2 Portable Remote Imaging SpectroMeter (PRISM) benthic reflectance data. Ver. XX. CORAL SDS, CA, USA. Accessed: DD-MM-YYYY (date you accessed the data). DOI or leave blank if the dataset does not yet have a DOI.

CORAL Mission. YYYY. Level 3 Portable Remote Imaging SpectroMeter (PRISM) benthic cover data. Ver. XX. CORAL SDS, CA, USA. Accessed: DD-MM-YYYY (date you accessed the data). DOI or leave blank if the dataset does not yet have a DOI.

CORAL Mission. 2016. SeaWiFS Bio-optical Archive and Storage System (SeaBASS), NASA. Accessed: DD-MM-YYYY (date you accessed the data). DOI or //seabass.gsfc.nasa.gov if the dataset does not yet have a DOI.



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