ALOS

Advanced Land Observing Satellite

ASTER

Advanced Spaceborne Thermal Emission and reflection Radiometer

ATBD

Algorithm Theoretical Basis Document

AW3D30

(ALOS) World 3D - 30m

C3S

Copernicus Climate Change Service

CDR

Climate Data Record

CDS

Climate Data Store

DEM

Digital Elevation Model

ECV

Essential Climate Variable

EO

Earth Observation

ETM+

Enhanced Thematic Mapper Plus

FoG

Fluctuations of Glaciers

GCOS

Global Climate Observing System

GDEM

Global Digital Elevation Model

GIMP

Greenland Mapping Project

GLIMS

Global Land Ice Measurements from Space

GTN-G

Global Terrestrial Network for Glaciers

IGOS

Integrated Global Observing Strategy

IPCC AR5

Intergovernmental Panel on Climate Change Fifth Assessment Report

NDSI

Normalised Difference Snow Index

NED

National Elevation Dataset

PI

Principal Investigator

PQAD

Product Quality Assurance Document

PUGS

Product User Guide and Specification

RGI

Randolph Glacier Inventory

SPOT

Satellite Pour l’Observation de la Terre

SRTM

Shuttle Radar Topography Mission

WGI

World Glacier Inventory

WGS

World Geodetic System