USHCN Version 2: U.S. Historical Monthly Climate Data, Superseded

United States precipitation and temperature records, corrected for station changes. The data includes raw, time-of-observation-adjusted, and homogenized sets for maximum, minimum, and average temperature and precipitation. This superseded version was produced by NOAA NCEI and last updated in January 2013.

Use Cases

• Reproducing historical climate studies based on the superseded USHCN Version 2 data
• Analyzing temperature trends based on the Pairwise Homogenization Algorithm (PHA) adjusted data
• Studying precipitation patterns based on time-of-observation bias (TOB) corrected records
• Comparing raw station data with adjusted versions to understand correction methodologies

Strengths

• Data is corrected for changes in station location, instrumentation, and observing practices
• Includes three distinct data types: raw, TOB-adjusted, and PHA-homogenized temperature and precipitation
• Stations were selected for coverage, record length, completeness, and historical stability

Limitations

• This version is superseded; the description advises against use except for reproducing old studies
• Last updated 2013-01-10 00:00:00; freshness should be verified
• Column-level documentation is absent; field semantics must be inferred after download

Provenance

Source

NOAA_NCEI

Collection Method

Data from the NOAA Cooperative Observer Program (COOP) Network, corrected and homogenized.

Time Range

Historical coverage, specific range unknown from input.

Freshness

Last updated 2013-01-10 00:00:00

Geography

United States