IMOS MODIS: Daily Picoplankton Fraction Estimates from Ocean Color

IMOS provides daily satellite-derived estimates of phytoplankton size class fractions, specifically picoplankton and nanoplankton percentages, with microplankton calculated as the remainder. The data are produced from MODIS sensor observations on the Aqua satellite using algorithms described by Brewin et al. (2010, 2012) and are noted as unvalidated experimental products. Production of contemporary MODIS data ceased on 2024-12-26.

Use Cases

• Modeling marine ecosystem dynamics based on phytoplankton size class distributions.
• Studying ocean biogeochemistry and carbon cycling based on inferred phytoplankton concentrations.
• Validating ocean color algorithms and products based on the described Brewin et al. methodologies.
• Analyzing spatial and temporal trends in picoplankton abundance in surface ocean waters.

Strengths

• Data are derived from the MODIS sensor on the established Aqua satellite platform.
• The methodology is documented in peer-reviewed literature (Brewin et al., 2010 and 2012).
• Data are provided at a daily temporal resolution, suggesting frequent observations.

Limitations

• The products are explicitly described as unvalidated and experimental.
• Column-level documentation is absent; field semantics must be inferred after download.
• Production of new MODIS data ceased on 2024-12-26, limiting temporal coverage for contemporary studies.

Provenance

Source

Australian Ocean Data Network (AODN) / Integrated Marine Observing System (IMOS)

Collection Method

Satellite remote sensing via MODIS sensor on the Aqua platform, with data processing using the OC3 model and Brewin et al. (2012) algorithm.

Time Range

Covers the MODIS Aqua operational period up to 2024-12-26.

Freshness

Last updated 2026-07-10 13:18:38.487369; freshness should be verified.

Geography

Likely covers ocean areas observed by the MODIS Aqua sensor, with algorithm calibration data from the Atlantic and Indian Oceans.