Product User Manual for the Global Ocean Biogeochemistry Hindcast GLOBAL_REANALYSIS_BIO_001_029. Version 1.

Abstract

This document is the user manual for the CMEMS global biogeochemical multi-year hindcast (no data assimilation) GLOBAL_REANALYSIS_BIO_001_029: it provides with daily and monthly fields covering 1993 – 2017 period. This product is global. It is defined on a standard grid at 1/4 degree (approx. 25km) and on 75 standard levels. It is interpolated from the 1/12 degree and 50 vertical levels Arakawa C native grid. All variables are on the same grid points. GLOBAL_REANALYSIS_BIO_001_029 product is organised in three datasets:  global-reanalysis-bio-001-029-daily which contains 3D daily mean fields of chlorophyll, nitrate, phosphate, silicate, dissolved oxygen, net primary production.  global-reanalysis-bio-001-029-monthly which contains 3D daily mean fields of chlorophyll, nitrate, phosphate, silicate, dissolved oxygen, net primary production, iron, and phytoplankton concentration in carbon. In these datasets, one can find surface partial pressure of CO2 and pH as well. But these two last variables are not validated yet.  global-reanalysis-bio-001-029-statics which contains the static fields for the system: coordinates, mean sea surface level, mask and bathymetry. The product is published on the CMEMS dissemination server after automatic and human quality controls. Product is available on-line and disseminated through the CMEMS Information System. Files downloaded are in NetCDF4 format and follow CF-1.6 convention. This multi-year product is described in the Quality Information Document (QUID) CMEMS_GLO_QUID_001_029 (http://marine.copernicus.eu/documents/PUM/CMEMS-GLO-QUID001-029.pdf). More detailed information can be obtained from the CMEMS Service Desk (servicedesk.cmems@mercator-ocean.eu ).