Aqua MODIS Level-3 data provides global, mapped inherent optical properties of seawater, including absorption and backscattering coefficients. The dataset is derived from spectral remote sensing reflectance using the Generalized Inherent Optical Properties model framework. It is produced by OB_CLOUD and represents version 2022.0.
Use Cases
- Classify global water types by analyzing spatial patterns in the total absorption coefficient (a) and particulate backscattering coefficient (bbp_443).
- Assess phytoplankton biomass distribution and variability using the phytoplankton absorption coefficient at 443 nm (aph_443).
- Model colored dissolved organic matter dynamics by examining the combined CDOM and detritus absorption coefficient (adg_443) and its spectral slope (adg_s).
- Quantify uncertainty in optical retrievals for error propagation studies using provided uncertainty columns like aph_unc_443 and bbp_unc_443.
- Support cross-sensor calibration and validation by comparing derived inherent optical properties with other satellite products.
Strengths
- Provides globally mapped data for consistent spatial analysis.
- Includes uncertainty estimates for key variables like aph_unc_443 and bbp_unc_443.
- Derived using a standardized model framework (GIOP) for reproducible retrievals.
Limitations
- Specific temporal coverage, spatial resolution, and row count are unknown.
- Relies on satellite sensor performance and atmospheric correction, which can introduce errors in coastal or complex waters.
- Version 2022.0 may not represent the most recent processing algorithms or data.
Provenance
- Source
- NASA Earthdata (OB_CLOUD)
- Collection Method
- Retrieved from Aqua MODIS spectral Remote Sensing Reflectance using the Generalized Inherent Optical Properties model framework.
- Time Range
- null
- Freshness
- null
- Geography
- Global ocean coverage.