Amazon Floodplain Lake Chlorophyll from MODIS: 2002-2003

19 months of MODIS-derived chlorophyll-a concentration maps cover the Amazon River floodplain from Parintins to Almeirim, Brazil, from April 2002 to December 2003. The data, provided as GeoTIFFs, were validated with concurrent field measurements in Lake Curuai across four river stages. These maps support modeling of primary production dynamics in a major tropical wetland system.

Use Cases

• Modeling spatial and temporal variations of primary production based on chlorophyll-a concentration maps.
• Assessing seasonal phytoplankton dynamics in relation to the four distinct river stages (rising, high, decreasing, low).
• Validating satellite-derived water quality parameters using in-situ chlorophyll-a and suspended inorganic matter measurements.
• Studying the link between floodplain hydrology and aquatic ecosystem productivity in the Amazon.

Strengths

• Includes 19 months of continuous temporal coverage from April 2002 to December 2003.
• Validated with concurrent field measurements of chlorophyll-a and suspended inorganic matter in Lake Curuai.
• Provides data at four key hydrological stages, capturing seasonal floodplain dynamics.

Limitations

• Metadata completeness is low; specific column names, row counts, and file sizes are not provided.
• Conflicting 'last updated' dates exist between sources (2003-12-31 vs. 2026-04-10), creating uncertainty about provenance.
• Data is over 20 years old, limiting analysis of recent ecological changes.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Derived from Moderate Resolution Imaging Spectroradiometer (MODIS) surface reflectance product (MOD09), with field validation.

Time Range

April 2002 to December 2003

Freshness

2026-04-10 01:46:58.618498 (most recent update from datagov, but conflicts with other source)

Geography

Amazon River floodplain region from Parintins (Amazonas) to Almeirim (Para), Brazil, focusing on Lake Curuai.