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.
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All three
Chakaria HDSS
Matlab HDSS
Dhaka City
Choosing a site greys out everything that does not apply there.
- +DATA HUBSwhere the data physically comes from
- +DATASET TYPESgrouped by what kind of water they see
- +SITE-WISEwhat actually applies at each site
- +DURATION & CAPTURE CADENCEdaily · weekly · 10-day · 16-day · monthly
- +VARIABLESwhat is computed from the bands
- −LIMITATIONSwhy not — typed and severity-ranked
- +VALIDATION2 limitations · 1 critical
- +ACCESS6 limitations · 4 critical
- +SPATIAL6 limitations · 3 critical
- +TEMPORAL7 limitations · 2 critical
- +ALGORITHMIC3 limitations · 1 critical
- −COVERAGE6 limitations · 1 critical
- ·Dhaka has almost no pre-2015 algae observationCRITICALsite level
- ·Copernicus LWQ300 lake mask may exclude all three sitesHIGHdataset AL09
- ·Landsat 7 SLC-off stripes after May 2003HIGHdataset AL05
- ·IRI is a strong climate archive but a thin ocean-colour o…HIGHdataset AL17
- ·Multiple testing across the lag gridMEDIUMstudy level
- ·Dhaka polygon is a GADM level-3 unit labelled TejgaonMEDIUMsite level
- +ATMOSPHERIC1 limitations
- +SPECTRAL2 limitations
- +PAPERSthe evidence, DOI-linked
CRITICAL Dhaka has almost no pre-2015 algae observation coverage blocks Dhaka
Every Dhaka water body is below 250 m, so MODIS and Sentinel-3 are both unusable. Landsat at 16 days is the only option before 2015, giving roughly 5 percent of days observed - a daily series for 2000-2014 would be about 95 percent invented.
What to do: Model the pre-2015 Dhaka era MONTHLY, or restrict the daily analysis to 2017 onward. Always report the sensitivity analysis restricted to fill_method equals observed.