Datasets › AL08
1. Ocean colour (single sensor)
VIIRS SNPP / NOAA-20 chlorophyll (NOAA CoastWatch)
NOAA CoastWatch
Specification
- Code
AL08- Reliability
- A Reliable
- Variables delivered
- Chlorophyll-a (OCI), Rrs, Kd490
- Resolution
4 km (750 m for some SNPP products)- Cadence
- DAILY
- Coverage
- 2017 (SNPP) / 2019 (N20) → present
- Cost
- FREE
- Login required
- NONE
- Latency
- ~1 day
- CSV direct?
- YES — plain URL → .csv
- Sensor
- VIIRS SNPP / NOAA-20 — 4000 m, 1 day revisit
Applicability by site
YES — easiest daily coastal chlorophyll you can get · zero setup
Regional forcing only
NOT APPLICABLE
Access
- Route
- ERDDAP — direct CSV, no login
- Endpoint / asset ID
coastwatch.noaa.gov/erddap → noaacwNPPVIIRSchlaDaily · noaacwNPPN20VIIRSchlociDaily- Pipeline step
- 2 Download
- Documentation
- https://coastwatch.noaa.gov/erddap/griddap/noaacwNPPVIIRSchlaDaily.html
Command
cd 01_Scripts
python 07_algae_api_download.py --sources erddapWhat to watch for
VALIDATION STATUS
NOAA operational product, routinely validated
KNOWN LIMITATION
Starts 2017 only. 4 km still too coarse for the estuary itself.