SatHDSS
Network panel

Algae Dataset

Every data hub, dataset, sensor, variable, paper and limitation in one tree — and for each: where it comes from, how far back it goes, how often it captures, why it belongs in a cholera study, and why it does not work everywhere.

Highlight site All three Chakaria HDSS Matlab HDSS Dhaka City Choosing a site greys out everything that does not apply there.

1. Ocean colour (merged)

AL02 · Copernicus Marine GlobColour — L4 gap-free multi-sensor chlorophyll
CMEMS / ACRI-ST
A+ Gold FREE ACCOUNT NEEDED

Source · duration · capture cadence

Data source
CMEMS / ACRI-ST
Access route
copernicusmarine Python toolbox · OPeNDAP
Endpoint / asset
cmems_obs-oc_glo_bgc-plankton_my_l4-gapfree-multi-4km_P1D (MY) / ..._nrt_... (NRT)
Duration
1997-09 → present
Capture cadence
DAILY (gap-free!)
Resolution
4 km
Delivers
Chlorophyll-a (gap-free interpolated), PFT, primary production
Command
07_algae_api_download.py --sources cmems
Why it is used for cholera. Operational, continuously validated against in-situ
Why not — catalogue limitation. 'Gap-free' means INTERPOLATED — a filled value is not an observation. Always carry the companion flag layer.

Site applicability

SiteVerdictWhy
Chakaria HDSS YES ESSENTIAL — daily gap-free chlorophyll for the Chakaria coastal box
Matlab HDSS PARTIAL Regional forcing only
Dhaka City NOT APPLICABLE NOT APPLICABLE

Reliable · accessible · authentic

A+ Gold
Reliability tier
REGISTER
Accessible
CMEMS
Authentic — operator
Documentation: https://marine.copernicus.eu/

Typed limitations (1)

MEDIUM Needs a Copernicus Marine account and a Python toolbox access

Free, but registration plus pip install copernicusmarine plus a login step, and the output is NetCDF requiring conversion.

What to do: Worth it - this is the only daily gap-free chlorophyll product available. Convert with xarray and netCDF4.
Full dataset page →