For the **Global** Ocean **Satellite Observations**, ACRI-ST company (Sophia Antipolis, France) is providing **Bio-Geo-Chemical (BGC)** products based on the **Copernicus-GlobColour** processor.
* Upstreams: SeaWiFS, MODIS, MERIS, VIIRS-SNPP & JPSS1, OLCI-S3A & S3B for the **""multi""** products, and S3A & S3B only for the **""olci""** products.
* Variables: Chlorophyll-a (**CHL**), Gradient of Chlorophyll-a (**CHL_gradient**), Phytoplankton Functional types and sizes (**PFT**), Suspended Matter (**SPM**), Secchi Transparency Depth (**ZSD**), Diffuse Attenuation (**KD490**), Particulate Backscattering (**BBP**), Absorption Coef. (**CDM**) and  Reflectance (**RRS**).

* Temporal resolutions: **daily**.
* Spatial resolutions: **4 km** and a finer resolution based on olci **300 meters** inputs.
* Recent products are organized in datasets called Near Real Time (**NRT**) and long time-series (from 1997) in datasets called Multi-Years (**MY**).

To find the **Copernicus-GlobColour** products in the catalogue, use the search keyword **""GlobColour""**."

**DOI (product):**   
https://doi.org/10.48670/moi-00280

Emanuele BÖHM

Quentin JUTARD

Product User Manual

Quality Information Document

Synthesis Quality Overview

An ARCO version of this dataset, downsampled in the spatial dimensions by 4.
    
Note that the link (`href`) associated to this asset is the base directory
of this dataset, but it cannot be accessed directly.

To download this dataset or part of it, 
use a library such as [xarray](https://docs.xarray.dev/).

Downsampled dataset (by 4) in Zarr

An ARCO version of this dataset, downsampled in the spatial dimensions by 8.
    
Note that the link (`href`) associated to this asset is the base directory
of this dataset, but it cannot be accessed directly.

To download this dataset or part of it, 
use a library such as [xarray](https://docs.xarray.dev/).

Downsampled dataset (by 8) in Zarr

An ARCO version of this dataset with a small chunk size in the spatial dimensions.
    
Note that the link (`href`) associated to this asset is the base directory
of this dataset, but it cannot be accessed directly.

To download this dataset or part of it, 
use a library such as [xarray](https://docs.xarray.dev/).

Geo-chunked dataset in Zarr

The original, non-ARCO version of this dataset, as published by the data provider.

Native dataset

An ARCO version of this dataset with a small chunk size in the temporal dimension.
    
Note that the link (`href`) associated to this asset is the base directory
of this dataset, but it cannot be accessed directly.

To download this dataset or part of it, 
use a library such as [xarray](https://docs.xarray.dev/).

Time-chunked dataset in Zarr

Georeferenced map tiles using the OGC WMTS standard.

OGC Web Map Tile Service (WMTS)

Optics, multi-sensor (4 km)

CMEMS product: cmems_obs-oc_glo_bgc-optics_my_l3-multi-4km_P1D,  generated by ACRI-ST

cmems_obs-oc_glo_bgc-optics_my_l3-multi-4km_P1D

Plankton, multi-sensor (4 km)

CMEMS product: cmems_obs-oc_glo_bgc-plankton_my_l3-multi-4km_P1D,  generated by ACRI-ST

cmems_obs-oc_glo_bgc-plankton_my_l3-multi-4km_P1D

An ARCO version of this dataset, downsampled in the spatial dimensions by 16.
    
Note that the link (`href`) associated to this asset is the base directory
of this dataset, but it cannot be accessed directly.

To download this dataset or part of it, 
use a library such as [xarray](https://docs.xarray.dev/).

Downsampled dataset (by 16) in Zarr

An ARCO version of this dataset, downsampled in the spatial dimensions by 32.
    
Note that the link (`href`) associated to this asset is the base directory
of this dataset, but it cannot be accessed directly.

To download this dataset or part of it, 
use a library such as [xarray](https://docs.xarray.dev/).

Downsampled dataset (by 32) in Zarr

An ARCO version of this dataset, downsampled in the spatial dimensions by 64.
    
Note that the link (`href`) associated to this asset is the base directory
of this dataset, but it cannot be accessed directly.

To download this dataset or part of it, 
use a library such as [xarray](https://docs.xarray.dev/).

Downsampled dataset (by 64) in Zarr

Plankton, OLCI (300 m)

CMEMS product: cmems_obs-oc_glo_bgc-plankton_my_l3-olci-300m_P1D,  generated by ACRI-ST

cmems_obs-oc_glo_bgc-plankton_my_l3-olci-300m_P1D

Plankton, OLCI (4 km)

CMEMS product: cmems_obs-oc_glo_bgc-plankton_my_l3-olci-4km_P1D,  generated by ACRI-ST

cmems_obs-oc_glo_bgc-plankton_my_l3-olci-4km_P1D

Reflectance, multi-sensor (4 km)

CMEMS product: cmems_obs-oc_glo_bgc-reflectance_my_l3-multi-4km_P1D,  generated by ACRI-ST

cmems_obs-oc_glo_bgc-reflectance_my_l3-multi-4km_P1D

Reflectance, OLCI (300 m)

cmems_obs-oc_glo_bgc-reflectance_my_l3-olci-300m_P1D_202211

Reflectance, OLCI (4 km)

CMEMS product: cmems_obs-oc_glo_bgc-reflectance_my_l3-olci-4km_P1D,  generated by ACRI-ST

cmems_obs-oc_glo_bgc-reflectance_my_l3-olci-4km_P1D

Transparency, multi-sensor (4 km)

CMEMS product: cmems_obs-oc_glo_bgc-transp_my_l3-multi-4km_P1D,  generated by ACRI-ST

cmems_obs-oc_glo_bgc-transp_my_l3-multi-4km_P1D

Transparency, OLCI (4 km)

CMEMS product: cmems_obs-oc_glo_bgc-transp_my_l3-olci-4km_P1D,  generated by ACRI-ST

Global Ocean Colour (Copernicus-GlobColour), Bio-Geo-Chemical, L3 (daily) from Satellite Observations (1997-ongoing)

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