✳ Concepts
Glossary
Visual concept explainers — swath, spectral band, STAC item, COG, Zarr, foundation model, DAAC, and more.
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Revisit (temporal resolution)
g03
Spatial resolution
g06
STAC (SpatioTemporal Asset Catalog)
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Swath
g08
DAAC (Distributed Active Archive Center)
g05
Processing levels (L1–L4)
g07
CMR (Common Metadata Repository)
g10
Zarr
g02
Spectral band
g09
COG (Cloud-Optimized GeoTIFF)
g11
Kerchunk / VirtualiZarr
g12
NetCDF & HDF
g13
Granule
g14
NDVI (Normalized Difference Vegetation Index)
g15
Earthdata Login
g16
GIBS (Global Imagery Browse Services)
g19
Reanalysis
g17
SAR (Synthetic Aperture Radar)
g20
Sun-synchronous vs geostationary orbit
g18
InSAR (Interferometric SAR)
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NRT (Near-Real-Time)
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Footprint
g23
Hyperspectral
g24
XCO₂
g27
Chlorophyll-a
g26
Aerosol
g25
Mascon (mass concentration)
g29
Backscatter
g28
BRDF correction
g30
Radar bands (C-band, L-band)
g31
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
g36
VEDA (Visualization, Exploration & Data Analysis)
g38
PgSTAC & STAC API (catalog back end)
g37
TiTiler (dynamic tile server)
g40
JupyterHub (cloud analysis platform)
g39
ARCO (Analysis-Ready, Cloud-Optimized)
g41
Apache Airflow (data pipeline orchestration)
g42
Soil moisture
g44
Brightness temperature
g43
Passive microwave
g46
Radiometer
g45
Radiance
g48
Emissivity
g47
Albedo
g49
Land surface temperature (LST)
g50
Sea surface temperature (SST)
g52
Precipitation
g51
Water vapor (precipitable water)
g53
Ozone (total column)
g55
Nitrogen dioxide (NO₂)
g54
Aerosol optical depth (AOD)
g57
Ocean color
g56
Methane (CH₄)
g59
Scatterometer
g58
Lidar
g60
Radar altimetry
g62
Geolocation
g63
Digital elevation model (DEM)
g61
Nadir & viewing geometry
g65
Snow water equivalent (SWE)
g64
Sea ice concentration
g66
Leaf area index (LAI)