Menu
National Snow and Ice Data Center
NSIDC
a part of CIRES at the University of Colorado Boulder
Skip to main content
Main navigation
News & Analyses
News & Stories
Sea Ice Today
Ice Sheets Today
Snow Today
About our Analyses
Multimedia
Data
Explore Data
Visualize Data
Submit Data
Submit NASA Data to NSIDC DAAC
Submit Data to Other NSIDC Programs
User Resources
Get Started with Data
Data Announcements
Help Center
Data Tools
Documents
Levels of Service
NASA Earthdata Forum
Data Programs
About our Programs
NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)
NOAA at NSIDC
Exchange for Observations and Local Knowledge of the Arctic (ELOKA)
Data Policies
Our Research
Learn
What is the Cryosphere?
Parts of the Cryosphere
Arctic Weather & Climate
Frozen Ground & Permafrost
Glaciers
Ice Sheets
Ice Shelves
Sea Ice
Snow
Ask a Scientist
Cryosphere glossary
About
About NSIDC
What We Do
Our People
Published Research
Our History
Careers
For the Media
Contact Us
Citation Policies
Protecting Your Privacy
Land Acknowledgement
Search
News & Analyses
News & Stories
Sea Ice Today
Ice Sheets Today
Snow Today
About our Analyses
Multimedia
Data
Explore Data
Visualize Data
Submit Data
Submit NASA Data to NSIDC DAAC
Submit Data to Other NSIDC Programs
User Resources
Get Started with Data
Data Announcements
Help Center
Data Tools
Documents
Levels of Service
NASA Earthdata Forum
Data Programs
About our Programs
NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)
NOAA at NSIDC
Exchange for Observations and Local Knowledge of the Arctic (ELOKA)
Data Policies
Our Research
Learn
What is the Cryosphere?
Parts of the Cryosphere
Arctic Weather & Climate
Frozen Ground & Permafrost
Glaciers
Ice Sheets
Ice Shelves
Sea Ice
Snow
Ask a Scientist
Cryosphere glossary
About
About NSIDC
What We Do
Our People
Published Research
Our History
Careers
For the Media
Contact Us
Citation Policies
Protecting Your Privacy
Land Acknowledgement
Home
snex23_tree_sm_tech_ref.pdf
File
/sites/default/files/documents/technical-reference/snex23_tree_sm_tech_ref.pdf
File
snex23_tree_sm_tech_ref.pdf
News & Analyses
News & Stories
Sea Ice Today
Ice Sheets Today
Snow Today
About our Analyses
Multimedia
Data
Explore Data
Visualize Data
Submit Data
Submit NASA Data to NSIDC DAAC
Submit Data to Other NSIDC Programs
User Resources
Get Started with Data
Data Announcements
Help Center
Data Tools
Documents
Levels of Service
NASA Earthdata Forum
Data Programs
About our Programs
NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)
NOAA at NSIDC
Exchange for Observations and Local Knowledge of the Arctic (ELOKA)
Data Policies
Our Research
Learn
What is the Cryosphere?
Parts of the Cryosphere
Arctic Weather & Climate
Frozen Ground & Permafrost
Glaciers
Ice Sheets
Ice Shelves
Sea Ice
Snow
Ask a Scientist
Cryosphere glossary
About
About NSIDC
What We Do
Our People
Published Research
Our History
Careers
For the Media
Contact Us
Citation Policies
Protecting Your Privacy
Land Acknowledgement