eFLaG

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Map data downloads

Stations (with metrics):

The drought characteristics assessed are:

  • Duration (number of months over which a drought occurs)
  • Maximum deficit (the largest magnitude anomaly below the threshold occurring in any month of a drought, expressed as an absolute value of cumecs (river flows) or SGI units (groundwater levels)
  • Total deficit (the accumulated sum of all absolute magnitude anomalies across all months of a drought).

The map shows the change in the selected drought characteristic which you can choose to express as absolute change or % change. You can view the change between the:

  • Baseline (BL): 1989–2018 and Near Future (NF): 2020–2049
  • Baseline (BL): 1989–2018 and Far Future (FF): 2050–2079.

You can toggle through the three drought characteristics and show outputs from each model.

By clicking a site on the map, a box plot is shown where you can view the drought characteristics compared to the observations over the above time slices.

You can toggle through the three drought characteristics and show outputs from each model. The plot gives the option to show each of the RCM-PPE members or remove some — the Portal redraws the plot appropriately.

The transient projections of present and future river flows and groundwater levels are also available to view on the Portal. These have been expressed in flow (or level) percentiles:

  • Q90 / L90 (The flow in cubic metres per second or the level in m AOD which was equalled or exceeded for 90% of the record)
  • Q70 / L70
  • Q50 / L50
  • Q30 / L30 (The flow in cubic metres per second or the level in m AOD which was equalled or exceeded for 30% of the record)

The map shows the change in transient flows or levels which you can choose to express as absolute change or % change. You can view the change between the:

  • Baseline (BL): 1989–2018 and Near Future (NF): 2020–2049
  • Baseline (BL): 1989–2018 and Far Future (FF): 2050–2079

By clicking a site on the map, a plot is shown where you can view the 12 transient runs and the median. By changing the model and flow or level percentiles you can update the plot.

Projections of changes in groundwater recharge are available to view on the Portal. These are expressed in absolute changes (mm/day) and percentage changes for the 558 groundwater bodies in England, Scotland and Wales. The statistics are summarised as monthly averages and seasonal averages.

The map shows the change in groundwater recharge which you can choose to express as absolute change or % change. The mean of the RCM-PPE ensemble is used to calculate these changes. You can view the change between the:

  • Baseline (BL): 1989–2018 and Near Future (NF): 2020–2049
  • Baseline (BL): 1989–2018 and Far Future (FF): 2050–2079

By clicking a groundwater body on the map, a box plot is shown where you can view the changes in recharge over the above time slices for individual or groups of the RCM-PPE members.

The map shows the evaluation of model performance when driven with baseline observed climate data. A range of metrics were produced to evaluate model performance for each site and these can been viewed on the interactive map. You can toggle through the different models and metrics as appropriate.

Model runs: