North American Weather Regime Classification Data, 1979-2022

A dataset supporting the work by Lee et al. (2023) in the Journal of Climate. It includes Z500 climatology and anomalies, EOFs/PCs, and parameters for attributing daily weather regimes over North America from 1979 to 2022. The data also provides a Weather Regime Index (WRI) for each day, representing its standardized projection onto cluster-mean normalized Z500 anomalies.

Use Cases

• Classifying daily atmospheric states into weather regimes based on the provided Z500 anomaly parameters.
• Analyzing the frequency and persistence of weather regimes over the 1979-2022 period using the supplied time series.
• Calculating Weather Regime Index (WRI) values to quantify the strength of a regime's influence on a given day.
• Validating new weather regime classification methodologies against the established EOFs and cluster means.

Strengths

• Data spans a 44-year period from 1979 to 2022, providing a long-term climatological context.
• Includes derived indices like the Weather Regime Index (WRI) for standardized analysis.
• Associated with a peer-reviewed publication in the Journal of Climate, indicating academic review.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific modeling tasks.
• Last update date is unknown; freshness unverified.

Provenance

Source

Simon H. Lee, Columbia University

Collection Method

Derived from atmospheric reanalysis data to support the methodology in Lee et al. (2023).

Time Range

1979-2022

Geography

North America