Global Snow and Subnivium Trends

Visualize global trend in snow free days, snow cover duration, and start and end of frozen season.  Linkes to how global snow and subnivium trends impact snow cover dependent organisms.

NCAR Climate Data Guide

A go-to source for scientifically sound information and advice on the strengths, limitations, and applications of climate data.

WCRP Climate and Cryosphere (CliC)

A core project of the World Climate Research Programme.

GEOSS Group on Earth Observations (GEO)

The Group on Earth Observations is coordinating efforts to build a Global Earth Observation System of Systems.

NASA Land Measurement Portal

Provides a single location to find information and data products related to terrestrial observations across agencies and institutions.

The Freeze/Thaw Earth System Data Record is available under Surface Hydrology.


NASA Earth Science Data Systems Working Group.


National Snow and Ice Data Center.

BYU Scattermeter Climate Record Pathfinder

Scatterometer-based data time series.

CEOS Essential Climate Variable (ECV) Inventory

Select the Record 10153 to view our metdata and link to our data.

USGCRP Indicators:  Frost-Free Season

Global daily freeze-thaw data are provided by the NASA Freeze-Thaw Earth Systems Data Record, which represents on of the largest continous global records from satellite- based observations.

EPA Climate Indicators:  Non-Frozen Season

This indicator tracks the number of days the U.S. and North American landscape is not frozen.