Data for movements in Budyko space for river basins worldwide under high greenhouse gas emission scenario

Fernando Jaramillo

The dataset includes simulated changes in the evaporative ratio and aridity index, together with corresponding magnitude and direction of change in the so-called Budyko space between the periods 1901⁠ – ⁠1950 and 2051⁠ – ⁠2100 for 405 hydrological basins worldwide.

The mathematical space spanned by the evaporative ratio (i.e., actual evaporation over precipitation) and the aridity index (i.e., potential evaporation over precipitation) is often named the Budyko space and the change in the location in the Budyko space of a particular region or basin can be referred to as movement in Budyko space. Both concepts help to visualize temporal hydroclimatic change in a given hydrological basin. The movement corresponds to the joint change in the aridity index and evaporative ratio between two time periods for a specific hydrological basin. The framwork can help understanding the physical and hydrological mechanisms underlying basins’ locations in the Budyko space or developing stochastic and deterministic approaches that quantify the sensitivity of water resources to climatic conditions.

The data is obtained by calculating movements in Budyko space between 1901⁠ – ⁠1950 and 2051⁠ – ⁠2100 for large river basins worldwide under high and low greenhouse gas emission scenarios. We use the outputs of seven models of the Coupled Model Intercomparison Project — Phase 6 (CMIP6) under the SSP58-5 pathway scneario. Acknowledging that the parametrization of potential evaporation may heavily influence such movement, we use two different estimates for its quantification.

Citation

Fernando Jaramillo (2022) Data for movements in Budyko space for river basins worldwide under high greenhouse gas emission scenario. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/jaramillo-2022-budyko-1

References

Jaramillo F, Piemontese L, Berghuijs WR, Wang-Erlandsson L, Greve P, Wang Z (2022) Fewer basins will follow their Budyko curves under global warming and fossil-fueled development. Water Resources Research 58:e2021WR031825. https://doi.org/10.1029/2021WR031825

Data description

The dataset was developed for, and used in, the study by Jaramillo et al. (2022). The data are provided in one comma-separated values (.csv) file with 13 columns:

• Basin: Hydrological basin
• Sc: SSP from CMIP6 data
• PETP1f: Aridity index based on radiation-only method for potential evaporation (1901 – ⁠1950)
• PETP2f: Aridity index based on Penman-Monteith for open water method for potential evaporation (1901 – ⁠1950)
• AETPf: Evaporative ratio (1901-1950)
• PETP1l: Aridity index based on radiation-only method for potential evaporation (2051 – ⁠2100)
• PETP2l: Aridity index based on Penman-Monteith for open water method for potential evaporation (2051 – ⁠2100)
• AETPl: Evaporative ratio (2051-2100)
• DPETP1: Change in Aridity index based on radiation-only method for potential evaporation
• DPETP2: Change in Aridity index based on Penman-Monteith for open water method for potential evaporation
• DAETP: Change in evaporative ratio
• Orientation_wr: Direction of movement in Budyko space
• Magnitude: Magnitude of movement in Budyko space