PXR: Global Parametrized Extreme Precipitation Maps

Parametrized eXtreme Rain (PXR) is a dataset that simplifies the representation of extreme precipitation on a global scale. It was created by Laurent Guillaume Courty of Loughborough University by fitting extreme value distributions to annual precipitation maxima from reanalysis data. The dataset provides parameters for creating Intensity-Duration-Frequency (IDF) curves.

Use Cases

• Create Intensity-Duration-Frequency (IDF) curves based on the provided distribution parameters.
• Model global extreme precipitation events using the fitted Generalized Extreme Value (GEV) parameters.
• Analyze scaling characteristics of precipitation extremes using the simplified four-parameter version (PXR-4).
• Compare extreme precipitation patterns for different event durations (1 to 360 hours).

Strengths

• Provides a simplified, parametrized representation of complex extreme precipitation data.
• Covers 19 distinct event durations for detailed temporal analysis.
• Includes a four-parameter version (PXR-4) designed for easier application in creating IDF curves.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Loughborough University

Collection Method

Created by fitting extreme value distributions to annual precipitation maxima obtained from reanalysis data.

Geography

Global