Sources
26 algae datasets, aligned to three sites
Everything here is free and comes from an operational provider — ESA, NASA, USGS or Copernicus. Authenticity is not the differentiator. What differs is resolution, revisit interval, and whether the water body at that site is physically large enough to be seen at all.
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Showing 26 of 26 datasets. Click any column header to sort. YES / PARTIAL / NOT APPLICABLE is the verdict for that site.
| Code | Product | Reliability | Delivers | Resolution | Cadence | Coverage | Login | CHAKARIA | MATLAB | DHAKA | |
|---|---|---|---|---|---|---|---|---|---|---|---|
AL06 |
MODIS-Aqua Level-3 SMI
MODIS Aqua L3 |
A Reliable | Chlorophyll-a (OC3M), Rrs 412/443/488/531/547/555/667, FAI-capable bands, SST… | 4.6 km |
Daily / 8-day / monthly | 2002-07 → present | NONE | YES | PARTIAL | NOT APPLICABLE | → |
AL07 |
SeaWiFS Level-3 SMI
SeaWiFS L3 ocean colour |
A Reliable | Chlorophyll-a (OC4v4), Rrs 412/443/490/510/555/670 — the ORIGINAL SWM bands | 9 km (4 km avail.) |
Daily / 8-day / monthly | 1997-09-04 → 2010-12-11 (missi… | NONE | YES | PARTIAL | NOT APPLICABLE | → |
AL08 |
VIIRS SNPP / NOAA-20 chlorophyll (NOAA CoastWatch)
VIIRS SNPP / NOAA-20 |
A Reliable | Chlorophyll-a (OCI), Rrs, Kd490 | 4 km (750 m for some SNPP… |
DAILY | 2017 (SNPP) / 2019 (N20) → present | NONE | YES | PARTIAL | NOT APPLICABLE | → |
AL09 |
Copernicus Global Land Service — Lake Water Quality (LWQ300 /… | A Reliable | Turbidity, chlorophyll-a (trophic state index), reflectance — for LAKES speci… | 300 m (LWQ300) / 100 m (L… |
10-day composite | 2016 (LWQ300) → present | ACCOUNT | PARTIAL | PARTIAL | PARTIAL | → |
AL10 |
ESA CCI Lakes v2.x | A Reliable | Lake chlorophyll-a, turbidity, lake surface water temperature, water extent | 1000 m |
DAILY | 1992 → 2020 (v2.0.2 · v2… | ACCOUNT | NOT APPLICABLE | NOT APPLICABLE | PARTIAL | → |
AL11 |
Copernicus CDS — Satellite Ocean Colour (OC-CCI repackaged)
ESA Ocean Colour CCI v6 |
A Reliable | Chlorophyll-a, Rrs, Kd490 | 4 km |
Daily / monthly | 1997-09 → present | ACCOUNT | YES | PARTIAL | NOT APPLICABLE | → |
AL12 |
CMEMS Global Ocean Biogeochemistry Reanalysis | A Reliable | Chlorophyll, phytoplankton carbon, nitrate, phosphate, silicate, primary prod… | 0.25 deg (~28 km) |
DAILY | 1993 → present (rolling) | ACCOUNT | PARTIAL | NOT APPLICABLE | NOT APPLICABLE | → |
AL01 |
ESA Ocean Colour CCI v6.0 — merged multi-sensor chlorophyll-a
ESA Ocean Colour CCI v6 |
A+ Gold | Chlorophyll-a, Rrs (incl. 412 & 555 nm for SWM), Kd490, IOPs, PFT | 4 km (1 km regional avail… |
Daily / 5-day / 8-day / MONTHLY | 1997-09 → 2024/25 (rolling) | NONE | YES | PARTIAL | NOT APPLICABLE | → |
AL02 |
Copernicus Marine GlobColour — L4 gap-free multi-sensor chlor… | A+ Gold | Chlorophyll-a (gap-free interpolated), PFT, primary production | 4 km |
DAILY (gap-free!) | 1997-09 → present | ACCOUNT | YES | PARTIAL | NOT APPLICABLE | → |
AL03 |
Sentinel-2 MSI Level-2A (harmonised)
Sentinel-2 MSI |
A+ Gold | NDCI, MCI, FAI, phycocyanin proxy, turbidity, MNDWI water mask, bloom area | 10 m (B2,3,4,8) / 20 m (B… |
5 days (2-3 d with S2C from 2025) | 2015-06 (L1C) / 2017-03 (L2A) → present | NONE | YES | YES | YES | → |
AL04 |
Sentinel-3 OLCI — 21 bands incl. 620 nm (phycocyanin) & 709 n…
Sentinel-3 OLCI |
A+ Gold | PHYCOCYANIN (620 nm) , chlorophyll (MCI, NDCI), Rrs 412/555 for SWM, TSM | 300 m full resolution |
~1-2 days (S3A + S3B) | 2016-10 → present | NONE | YES | YES | PARTIAL | → |
AL05 |
Landsat 5 / 7 / 8 / 9 Collection 2 Level-2
Landsat 8 OLI |
A+ Gold | Chlorophyll proxy (green/blue, needs local calibration), FAI, turbidity, MNDW… | 30 m |
16 days per satellite (~8 d with … | 1984 (L5) / 1999 (L7) / 2013 (L8 → present | NONE | YES | YES | YES | → |
AL13 |
MODIS-Terra Level-3 SMI
MODIS Terra |
B Usable | Chlorophyll-a, Rrs, SST | 4.6 km |
Daily / 8-day / monthly | 2000-02-24 → present | NONE | YES | PARTIAL | NOT APPLICABLE | → |
AL14 |
Harmonized Landsat Sentinel-2 (HLS) v2.0 | B Usable | Harmonised 30 m surface reflectance → NDCI-like, FAI, turbidity | 30 m |
2-3 days combined | 2013 (L30) / 2015 (S30) → present | NONE | YES | YES | YES | → |
AL15 |
PACE OCI — hyperspectral 380-900 nm at 5 nm
PACE OCI hyperspectral |
B Usable | Phytoplankton FUNCTIONAL TYPES, phycocyanin, chlorophyll, full pigment suite | ~1.2 km |
1-2 days | 2024-04 → present | ACCOUNT | PARTIAL | NOT APPLICABLE | NOT APPLICABLE | → |
AL16 |
MODIS MOD09GA/GQ daily surface reflectance (250-500 m)
MODIS Terra |
B Usable | FAI, NDVI-on-water, floating-bloom detection over LARGE water bodies only | 250 m (b1,b2) / 500 m |
DAILY | 2000-02-24 → present | NONE | PARTIAL | YES | NOT APPLICABLE | → |
AL17 |
IRI Data Library (Ingrid) — the portal you started from | B Usable | Climate + some ocean fields · strong for SST, precipitation, ENSO indices · o… | varies by dataset |
Daily / pentad / monthly | varies (some back to 1850s) → present | NONE | PARTIAL | PARTIAL | PARTIAL | → |
AL18 |
Sentinel-2 Level-1C + ACOLITE Dark Spectrum Fitting
Sentinel-2 MSI |
B Usable | Publication-grade Rrs → NDCI, MCI, FAI, phycocyanin, TSM over turbid inland w… | 10-20 m |
5 days | 2015-06 → present | ACCOUNT | YES | YES | YES | → |
AL19 |
GEE Sen2Cor L2A NDCI → chlorophyll polynomial
Sentinel-2 MSI |
C Caution | Uncalibrated chlorophyll-a estimate in mg/m3 | 10-20 m |
5 days | 2017-03 → present | NONE | YES | YES | YES | → |
AL20 |
Landsat green/blue chlorophyll proxy (2000-2015 backfill)
Landsat 7 ETM+ |
C Caution | Relative chlorophyll index only | 30 m |
16 days | 1984 → present | NONE | YES | YES | YES | → |
AL21 |
OCTS / CZCS historical ocean colour | C Caution | Chlorophyll-a | 9 km |
Daily/monthly | 1978 (CZCS) / 1996 (OCTS) → 1986 / 1997 | ACCOUNT | NOT APPLICABLE | NOT APPLICABLE | NOT APPLICABLE | → |
AL22 |
SeaBASS — NASA bio-Optical Archive and Storage System | D In-situ | In-situ chlorophyll-a, Rrs, pigments, phytoplankton counts | Point |
Per cruise/campaign | 1980s → present | ACCOUNT | PARTIAL | YES | YES | → |
AL23 |
GLORIA — Global Reflectance community dataset for Imaging and… | D In-situ | ~7,500 paired in-situ hyperspectral Rrs + chlorophyll + TSS + CDOM, incl. INL… | Point |
Per sample | 1980s → 2021 | NONE | YES | YES | YES | → |
AL24 |
LIMNADES — LIMnology and remote sensing Network dataset | D In-situ | In-situ lake chlorophyll-a, phycocyanin, TSM, CDOM, Rrs | Point |
Per sample | 1980s → present | ACCOUNT | PARTIAL | PARTIAL | YES | → |
AL25 |
Bangladesh Oceanographic Research Institute (BORI) / Dept. of… | D In-situ | In-situ chlorophyll, nutrients, plankton counts, water quality in Bangladeshi… | Point |
Varies | 2000s → present | ACCOUNT | YES | PARTIAL | PARTIAL | → |
AL26 |
icddr,b environmental microbiology archives (Huq et al. 2005 … | D In-situ | Paired pond water: V. cholerae presence, chlorophyll, temperature, salinity, … | Point (pond) |
FORTNIGHTLY | ~2000 → varies | ACCOUNT | PARTIAL | YES | PARTIAL | → |
Why “NOT APPLICABLE” rows are shown on purpose. Knowing that Sentinel-3 at 300 m cannot see a
Dhaka lake is as useful as knowing Sentinel-2 can — and it stops the question being re-asked in three
months. The verdict for every dataset at every site is stored in the database, not decided ad hoc.