Merged Sentinel-3A and Sentinel-3B OLCI Regional Mapped Inland Waters (ILW) Data, version 5.0
收藏Global Change Master Directory (GCMD)2025-02-20 更新2026-04-25 收录
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https://cmr.earthdata.nasa.gov/search/concepts/C3433948350-OB_CLOUD.html
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资源简介：
The ILW suite provides inland-water extractions for lakes and reservoirs across the contiguous U.S. (CONUS) and Alaska. ILW delivers Rayleigh-corrected surface reflectance (ρs, unitless) and the Cyanobacteria Index (CI_cyano, unitless). The data target for MERIS and OLCI are 15,450 CONUS waterbodies (≥1 full-resolution 300 m OLCI pixel), >2,300 larger resolvable lakes (≥3 pixels), and 5,874 resolvable lakes in Alaska—created in collaboration with the CyAN program to reduce user processing and provide a standardized resource for inland-water algorithm development, validation, and trend analysis. PACE OCI ILW targets 117 CONUS lakes (≥3 pixels) and lakes across Alaska.
Geophysical variables in this suite include:
- CI_cyano – Cyanobacteria Index, cyanobacteria only (Wynne & Stumpf algorithm, 2013) (sr⁻¹)
- flags_habs – Harmful Algal Bloom flags (unitless / bitmask)
- rhos_λ – Surface reflectance at wavelength λ (dimensionless)
提供机构：
OB_CLOUD
创建时间：
2025-02-20
