OrbView-2 SeaWiFS Level-3 Global Mapped Diffuse Attenuation Coefficient of Downwelling Irradiance (KD) Data, version 2022.0
收藏Global Change Master Directory (GCMD)2024-06-17 更新2026-04-25 收录
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https://cmr.earthdata.nasa.gov/search/concepts/C3113254820-OB_CLOUD.html
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资源简介：
The KD data suite provides diffuse attenuation coefficient of downwelling irradiance at 490 nm, Kd_490, which quantifies how quickly blue-green light diminishes with depth—an indicator of water clarity and the depth to which sunlight penetrates. Kd_490 is generated from ocean-color reflectance using the KD2 algorithm. Lower values indicate clearer water (deeper light penetration); users commonly apply Kd_490 to estimate euphotic depth, track coastal water quality and turbidity, interpret bloom/light environments, and supply inputs to biogeochemical and ecosystem models. As with all ocean-color products, uncertainties can be larger in optically complex coastal or inland waters; refer to the file metadata and algorithm documentation for quality flags and usage notes.
Geophysical variables in this suite include:
- Kd_490 — Diffuse attenuation coefficient of downwelling irradiance at 490 nm, KD2 algorithm (m⁻¹)
提供机构：
OB_CLOUD
创建时间：
2024-06-17
