CUSP

The CommUnity near-Surface Permafrost dataset is a data synthesis for near-surface permafrost, active-layer, thaw-depth, and related field observations.

CUSP brings many published and field datasets into one documented table, with source citations and tools that make the synthesis easier to check, rebuild, and extend.

Start with the data Suggest a dataset

Use CUSP

Find the release files, understand the columns, and cite the dataset and underlying sources correctly.

Release products

Work With The Data

Use the CUSP tools to rebuild the data, check the files, create spatial summaries, or add environmental information from Google Earth Engine.

Rebuild and process CUSP

Contribute Data

Suggest a dataset, prepare a new dataset, or add an environmental layer to the feature sampler.

Contributing guide

See How CUSP Is Built

Review the source inputs, rebuild steps, and known limitations behind the current release.

Build and source notes

First Steps

If you want to...	Start here
Understand what CUSP is and is not	What CUSP is
Use the released data	Release products
Read the public columns	Data schema
Rebuild or process CUSP on your computer	Command examples
Add or suggest a source dataset	Suggest a dataset
Rebuild the current release artifacts	Rebuild CUSP

Core CUSP Data

Each CUSP release is meant to be small enough to understand and specific enough to cite.

File	What it is for
cusp_vX.Y.csv	Main CUSP table with one row per accepted observation
cusp_features_vX.Y.csv	Environmental features sampled with Google Earth Engine and joined by cusp_obs_id, when included
cusp_sources_vX.Y.bib	BibTeX entries for included source datasets and publications
RELEASE_INFO.md	Release metadata, hashes, and build context