{"id":767,"date":"2018-08-19T16:35:02","date_gmt":"2018-08-19T16:35:02","guid":{"rendered":"https:\/\/www.ufrgs.br\/lsh\/?page_id=767"},"modified":"2023-02-06T18:20:59","modified_gmt":"2023-02-06T18:20:59","slug":"south-america-simulated-river-discharge-dataset","status":"publish","type":"page","link":"https:\/\/www.ufrgs.br\/lsh\/products\/south-america-simulated-river-discharge-dataset\/","title":{"rendered":"South America Simulated River Discharge Dataset"},"content":{"rendered":"

Overview<\/strong><\/p>\n

Issues related to climate change and human impacts on water resources are currently a global concern. Even in South America (SA), known as the “continent of waters” (Stevaux et al., 2009) by contributing around 30% of the global runoff that reaches the oceans, the distribution of available water resources is quite heterogeneous and subject to many conflicts. In addition, many challenges arise in large basins such as Amazon, La Plata and Orinoco (> 50% of the SA territory) due to their complexity and transnational characteristic, that is, upstream-downstream relations in different countries with different policies that involve, for example, problems related to the quality and use of water and implementation of dams for energy production. Extreme events such as droughts and floods, on the other hand, do not always respect water dividers because they are connected to meteorological systems that may be smaller or larger in scope, which requires a broader view than simple topographic boundaries (e.g., headwaters of Paran\u00e1 and S\u00e3o Francisco). Understanding and quantifying water resources in both space and time, on a consistent basis, is essential for planning and to develop adaptation strategies to modifications of the hydrological system, as well as to foster integrated management practices.<\/p>\n

Product description<\/strong><\/p>\n

Here, we provide a dataset of simulated discharges for South America encompassing the period between 01-Jan-1990 and 31-Dec-2009. River discharges are estimated by running the MGB hydrologic-hydrodynamic model with daily time step forced with rainfall derived from gauge, satellite and reanalysis data. South America was discretized into 33,749 irregular computational elements (i.e., unit-catchments based on topography and river length), and the model computes a time series of discharge corresponding to the outlet of each of these unit-catchments. The data is free access and should be used only for research activities and other educational purposes. Authors are not responsible for the use of this dataset. It is worth mentioning that these estimates are part of a hydrological model run, assuming several hypotheses that must be understood before its use.\u00a0The MGB continental model was manually calibrated and validated using different databases and remote sensing products. Below you will find a paper with a detailed description of methods, results and limitations of the initial version of the model:<\/p>\n

https:\/\/www.hydrol-earth-syst-sci.net\/22\/4815\/2018\/hess-22-4815-2018.html<\/a><\/p>\n

Datasets used to build MGB model:<\/strong><\/p>\n

Preprocessing\/Meteorological forcing<\/u><\/p>\n