Global reconstruction of flood and heavy precipitation probabilities, 1836-2015

As part of the HEGS project, an attempt was made at reconstructing flood and heavy precipitation probabilities for thousands of stations worldwide and for the period 1836-2015. This repository contains the precipitation/streamflow data underlying this reconstruction, and the reconstruction itself.

Data

Seasonal maxima of daily precipitation or streamflow. One file for each season, with the following columns:

1. "var": variable 'Rx1day' (heavy precipitation) or 'Qx'  (flood).
2. "year": year. For the DJF season, year e.g. 1998 spans from December 1998 to February 1999.
3. "siteID": ID of the site, as used in the original HadEX2/HadEX3 and GSIM datasets.
4. "lon": longitude.
5. "lat": latitude.
6. "value": seasonal maximum value, in mm (precipitation) or m³.s^-1 (streamflow).
7. "returnPeriod": return period T associated with the value above.
8. "nonExceedanceProb": non-exceedance probability associated with the return period (p=1-1/T).

Reconstructions

Probability of exceeding a T-year event, estimated at all stations and for the period 1836-2015. One file for each season, with the following columns:

1. "var": variable 'Rx1day' (heavy precipitation) or 'Qx'  (flood).
2. "year": year. For the DJF season, year e.g. 1998 spans from December 1998 to February 1999.
3. "siteID": ID of the site, as used in the original HadEX2/HadEX3 and GSIM datasets.
4. "lon": longitude.
5. "lat": latitude.
6. "eventLabel": definition of the event whose probability of exceedance is sought.
7. "prob": Estimated probability of exceeding the event defined above at this site during this season.