Glossary

Anisotropic

Directionally dependent

crs

Coordinate Reference System. A coordinate system, as defined by a relevant authority such as EPSG or SR-ORG, specified as a string with the authority and the code separated by a colon, for example 'EPSG:4326'.

crs_transform

A post transform for a crs, defined as a list of affine transformation parameters in row-major order [xScale, xShearing, xTranslation, yShearing, yScale, yTranslation]. See this reference for more information.

DEM

Digital Elevation Model

DN

Digital Number

DOY

Day Of Year

FIRMS

Fire Information for Resource Management System

google:registration_count

An image metadata property for the number of points found to be positionally consistent with a reference image known to be accurately registered. Numbers greater than 1000 indicate a good match.

google:registration_offset_*

The measured offset, in meters, between the image and a reference image known to be accuratley registered.

Isotropic

Independent of direction

MODIS

MODerate resolution Imaging Spectro-radiometer

NIR

Near Infra-Red

NDVI

Normalized Difference Vegetation Index. (NIR - red) / (NIR + red)

NDWI

Normalized Difference Water Index. (green - NIR) / (green + NIR)

SAD

Sistema de Alerta de Desmatamento

SD

Standard Deviation

system:time_start

The Earth Engine time stamp in milliseconds since the UNIX epoch. See this link for more information. The time stamp is set to the nominal image acqusition time for single scenes. It is set to the nominal composite start period for temporal composites.

system:time_end

See system:time_start. The ending time stamp is set to the nominal image acqusition time for single scenes. It is set to midnight on the day after the nominal composite end period for MODIS temporal composites.

USGS

United States Geological Survey

WRI

World Resources Institute