✳ Concepts
Glossary
Visual concept explainers — swath, spectral band, STAC item, COG, Zarr, foundation model, DAAC, and more.
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Spectral band
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Spatial resolution
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STAC (SpatioTemporal Asset Catalog)
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Processing levels (L1–L4)
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CMR (Common Metadata Repository)
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DAAC (Distributed Active Archive Center)
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Revisit (temporal resolution)
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Zarr
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COG (Cloud-Optimized GeoTIFF)
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Swath
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NetCDF & HDF
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Kerchunk / VirtualiZarr
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Granule
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NDVI (Normalized Difference Vegetation Index)
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Earthdata Login
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GIBS (Global Imagery Browse Services)
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Reanalysis
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SAR (Synthetic Aperture Radar)
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Sun-synchronous vs geostationary orbit
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InSAR (Interferometric SAR)
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NRT (Near-Real-Time)
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Footprint
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Mascon (mass concentration)
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XCO₂
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Aerosol
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Hyperspectral
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Chlorophyll-a
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BRDF correction
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Radar bands (C-band, L-band)
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Backscatter
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Polarimetry
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Evapotranspiration (ET)
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Foundation model
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Surface reflectance
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Data assimilation
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TiTiler (dynamic tile server)
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VEDA (Visualization, Exploration & Data Analysis)
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PgSTAC & STAC API (catalog back end)
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ARCO (Analysis-Ready, Cloud-Optimized)
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JupyterHub (cloud analysis platform)
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Apache Airflow (data pipeline orchestration)
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Soil moisture
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Brightness temperature
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Passive microwave
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Radiometer
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Emissivity
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Albedo
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Radiance
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Land surface temperature (LST)
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Sea surface temperature (SST)
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Water vapor (precipitable water)
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Precipitation
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Aerosol optical depth (AOD)
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Ozone (total column)
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Nitrogen dioxide (NO₂)
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Ocean color
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Methane (CH₄)
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Radar altimetry
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Scatterometer
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Lidar
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Nadir & viewing geometry
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Geolocation
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Digital elevation model (DEM)
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Snow water equivalent (SWE)
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Leaf area index (LAI)
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Sea ice concentration