Library · Source reference

prism

Provider

Noun	Provider
precipitation	PRISM Climate Group, Oregon State University
temperature	PRISM Climate Group, Oregon State University

Noun	Product
precipitation	PRISM AN81d/AN91d daily time series
temperature	PRISM AN81d/AN91d daily time series

Noun	What it provides
precipitation	default: ppt
temperature	maximum: tmax; minimum: tmin; mean: tmean

Noun	Coverage
precipitation	Contiguous United States
temperature	Contiguous United States

Noun	Resolution
precipitation	approximately 4 km
temperature	approximately 4 km

Noun	Temporal coverage
precipitation	1981-present
temperature	1981-present

Noun	Access method
precipitation	thredds_ncss
temperature	thredds_ncss

Noun	Type	Label convention	Reference timezone	Start offset	End offset	Known
precipitation	interval	day_ending	UTC	-12h	12h	True
temperature	interval	day_ending	UTC	-12h	12h	True

Offsets are relative to the midnight UTC calendar-date coordinate. Interpret labels, support intervals, and events separately.

Noun	Lifecycle	Revision status	Live health	QA profile
precipitation	implemented	VALIDATED	STALE	climate_continuous_daily
temperature	implemented	VALIDATED	STALE	climate_continuous_daily

These are catalog declarations, not a new live certification. Inspect evidence and scope.

Noun	Serving revision	Source mode	Identity strategy
precipitation	precipitation.prism@2026-08-26.1	rolling	kind: provider_catalog_and_asset_metadata; fields: catalog_url, dataset_url, last_modified, time_coverage
temperature	temperature.prism@2026-08-26.1	rolling	kind: provider_catalog_and_asset_metadata; fields: catalog_url, dataset_url, last_modified, time_coverage

Revision and schema helpers preserve the distinction between a scientific revision and endpoint health.

precipitation: Recent grids are revised as station data and quality control mature.
temperature: Recent grids are revised as station data and quality control mature.