Array · collection · 2025
Aqua MODIS Level-3 Global Binned Fluorescence Line Height (FLH) Data, version 2022.0
Listed in NASA Earthdata CMR
The Fluorescence Line Height (FLH) data suite quantifies the red chlorophyll-a fluorescence (~678–683 nm) emitted by phytoplankton, computed as the height of the measured water-leaving radiance above a spectrally interpolated baseline.
Description
FLH is widely used for HAB detection and tracking, identifying productive waters, and assessing phytoplankton physiology; values tend to be elevated in active blooms and can be reduced in complex waters.
As with all ocean-color products, uncertainties increase in optically complex coastal/inland waters, so users should refer to mission/algorithm notes for details. Geophysical variables in this suite include: - nflh — Normalized Fluorescence Line Height (W m⁻² µm⁻¹ sr⁻¹) - ipar — Instantaneous Photosynthetically Available Radiation (mol photons m⁻² s⁻¹)
Links
Get the data
- search.earthdata.nasa.gov /search/granules?p=C3380709029-OB_CLOUD ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
- NASA's Ocean Color Web - Data Distribution Site oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Binned/Aqua-MODIS ↗
download · from NASA CMR
Where it is published
- DOI doi.org/10.5067/aqua/modis/l3b/flh/2022.0 ↗
DOI / persistent id · from NASA CMR
Documentation and papers
- Aqua Homepage earthdata.nasa.gov/data/platforms/space-based-platforms/Aqua ↗
documentation · from NASA CMR
- MODIS Homepage earthdata.nasa.gov/data/instruments/MODIS ↗
documentation · from NASA CMR
- oceancolor.gsfc.nasa.gov /files/atbd/atbd-obdaac-normalized-fluorescence-line-height.pdf ↗
Algorithm Theoretical Basis Document for Fluorescence Line Height (FLH)
documentation · from NASA CMR
- nasa.github.io /oceandata-notebooks ↗
Satellite data procesing can be difficult. We're here to help! Visit the Oceandata Help Hub to navigate learning content for accessing visualizing, and analyzing data products.
documentation · from NASA CMR
- View the version history of this product. oceancolor.gsfc.nasa.gov/data/reprocessing ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3380709029-OB_CLOUD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3380709029-OB_CLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Aquatic Ecosystems · Earth Observing System, Aqua · Fluorescence · Moderate-Resolution Imaging Spectroradiometer · Phytoplankton · Solar Induced Fluorescence
- Inferred from text
- Oceanography 69%
Provenance · 1 source records, 16 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3380709029-OB_CLOUD | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3708 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (69%) |
| concepts[instrument].gcmd_instrument:modis | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecosystems/aquatic-ecosystems | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecosystems/aquatic-ecosystems/plankton/phytoplankton | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/vegetation/solar-induced-fluorescence | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-optics/fluorescence | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:aqua | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |