N: 90 S: -90 E: 180 W: -180
Description
The Chlorophyll-a data suite provides global, gridded composites of surface chlorophyll-a concentration (a proxy for phytoplankton biomass). CHL supports time-series and climatologies, anomaly detection, ecosystem and fisheries applications, and teaching/training, and pairs well with AVW, PAR, Kd(490), SST, and winds for environmental context. Note: retrievals in optically complex coastal/inland waters may carry higher uncertainty—refer to the mission/algorithm documentation (e.g., OCx/OCI) for details.
Geophysical variables in this suite include:
- chlor_a — Chlorophyll-a concentration (mg m⁻³)
Product Summary
Citation
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
Copy Citation
Documents
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
Publications Citing This Dataset
| Title | Year Sort ascending | Author | Topic |
|---|---|---|---|
| Global trends in ocean fronts and impacts on the airsea CO2 flux and chlorophyll concentrations | Yang, Kai, Meyer, Amelie, Le, Phuc T. D., Strutton, Peter G., Fischer, Andrew M. | Chlorophyll Concentration, Chlorophyll, Chlorophyll, Chlorophyll, Chlorophyll Concentrations, Phytoplankton, Sea Surface Temperature | |
| Contrasting physiological adaptation strategies to natural environmental change in two Red Sea coral holobionts | Thobor, Bianca M, Hill, Claudia E L, Custer, Gordon F, Garcias-Bonet, Neus, Fox, Michael D, El-Khaled, Yusuf C, Aylagas, Eva, Dini-Andreote, Francisco, Struck, Ulrich, Tilstra, Arjen, Peixoto, Raquel, Carvalho, Susana, Wild, Christian, Mueller, Benjamin | Chlorophyll Concentration, Chlorophyll, Chlorophyll, Chlorophyll, Chlorophyll Concentrations, Phytoplankton | |
| Operational closed-loop system for multi-scale chlorophyll-a monitoring | Halvorsen, Daniel rnes, Chiatante, Corrado, Penne, Cameron Louis, Singh, Asmita, Bakken, Sivert, Fragoso, Glaucia Moreira, Birkeland, Roger, Dallolio, Alberto, Garrett, Joseph Landon, Johansen, Tor Arne, Ellingsen, Ingrid Helene, Alver, Morten Omholt | Chlorophyll Concentration, Chlorophyll, Chlorophyll, Chlorophyll, Chlorophyll Concentrations, Phytoplankton, Chlorophyll Concentration, Chlorophyll, Chlorophyll, Chlorophyll, Chlorophyll Concentrations, Phytoplankton | |
| Nitrate stable isotopes complement subarctic new production estimates | Dempsey, Britton, Buchwald, Carolyn | Chlorophyll Concentration, Chlorophyll, Chlorophyll, Chlorophyll, Chlorophyll Concentrations, Phytoplankton | |
| Seasonality of the North Pacific Oligotrophic Gyre area in the past two decades and a modelling perspective for the 21st century | Meng, Siyu, Gong, Xun, Webber, Benjamin G. M., Joshi, Manoj, Ding, Xiaokun, Gong, Xiang, Gu, Mingliang, Gao, Huiwang | Chlorophyll Concentration, Chlorophyll, Chlorophyll, Chlorophyll, Chlorophyll Concentrations, Phytoplankton | |
| Mild Impact of the 2023 El Nino on Oceanographic and Biological | Aguilera, Victor M., Barranco, Linda, Dewitte, Boris, Gonzalez, Carolina E., Oerder, Vera, Escribano, Ruben | Chlorophyll Concentration, Chlorophyll, Chlorophyll, Chlorophyll, Chlorophyll Concentrations, Phytoplankton |
Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| chlor_a | Chlorophyll Concentration, OCI Algorithm | mg m^-3 | float32 | -32767 | 0.0010000000474975 to 100 | N/A | N/A |