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Te damos la bienvenida al instructivo de Google Earth Engine para trabajar con el conjunto de datos de agua superficial global (GSW). Este conjunto de datos se describe en la carta de Nature
High-resolution mapping of global surface water and its long-term changes.
En este instructivo, se proporcionan ejemplos de cómo usar Earth Engine para visualizar las capas de datos disponibles en el conjunto de datos de GSW y se presentan algunas visualizaciones y análisis típicos.
El instructivo se divide en secciones. En cada sección, el código se desarrollará de forma gradual con fragmentos de código cortos y texto explicativo. Al final de cada sección, se presentará el script de trabajo completo.
Los datos de GSW que se describen en este instructivo se produjeron en el marco del Programa Copernicus y se proporcionan sin cargo y sin restricciones de uso. Para obtener la información completa de la licencia, consulta el Reglamento de Copernicus.
Si usas los datos como una capa en un mapa publicado, incluye el siguiente texto de atribución:
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[null,null,["Última actualización: 2025-07-26 (UTC)"],[[["\u003cp\u003eThis tutorial demonstrates how to use Google Earth Engine to work with the Global Surface Water (GSW) dataset, enabling visualization and analysis of surface water data.\u003c/p\u003e\n"],["\u003cp\u003eThe tutorial is structured in sections with gradual code snippets and explanations, culminating in complete working scripts for each section.\u003c/p\u003e\n"],["\u003cp\u003eUsers are expected to have prior experience with the Earth Engine Code Editor and API, as outlined in the prerequisites.\u003c/p\u003e\n"],["\u003cp\u003eThe GSW dataset, produced under the Copernicus Programme, is freely available with proper attribution to "Source: EC JRC/Google" when used in published maps.\u003c/p\u003e\n"],["\u003cp\u003eAccess to Earth Engine requires a free signup process through the provided form for an Evaluator account.\u003c/p\u003e\n"]]],["This tutorial demonstrates using Google Earth Engine to work with the global surface water (GSW) dataset. It provides examples for visualizing GSW data layers, and performing analyses, using code snippets and explanations in sections. The GSW data, created under the Copernicus Programme, is freely available. Users are instructed to use the Earth Engine Code Editor. Attribution \"Source: EC JRC/Google\" is required for published maps using the data. Access requires signup via the Earth Engine form.\n"],null,["# Introduction\n\nWelcome to the Google Earth Engine tutorial for working with the global surface water (GSW)\ndataset. This dataset is described in the Nature letter\n[High-resolution mapping of global surface water and its long-term changes](https://www.nature.com/articles/nature20584.epdf?author_access_token=C5JSvooRop4jWxyp_qRPLNRgN0jAjWel9jnR3ZoTv0MqBuzCNsmw_DFxRd7sX93nfPzcbm_xTiPLlZMl7XrUhadm6EiT9cGdDNgn1s6EWrPWH3IeadLUjApplBoaS6xH).\nThis tutorial provides examples of how to use Earth Engine to visualize data layers\navailable in the GSW dataset, and presents some typical visualizations and analyses.\n\nThe tutorial is broken up into sections. Within each section, code will be built up\ngradually with short code snippets and explanatory text. At the end of each section, the\ncomplete working script will be presented.\n\nReferences\n----------\n\n- [High-resolution mapping of global surface water and its\n long-term changes](http://rdcu.be/nDd2) (online viewer)\n- [Get water governance on the global agenda](http://www.nature.com/news/get-water-governance-on-the-global-agenda-1.21104) (Nature editorial)\n- [Global Surface Water Explorer](https://global-surface-water.appspot.com/) (web application)\n- [Data Users Guide (v2)](https://storage.googleapis.com/global-surface-water/downloads_ancillary/DataUsersGuidev2.pdf)\n\nAudience\n--------\n\nThis tutorial assumes you are familiar with concepts presented in the\n[Earth Engine Code Editor](/earth-engine/guides/playground)\ndocumentation pages and have worked through the [Earth Engine API tutorial](https://developers.google.com/earth-engine/tutorial_api_01).\n\nLicense and Attribution\n-----------------------\n\nThe GSW data described in this tutorial were produced under the\n[Copernicus Programme](http://www.copernicus.eu/) and\nare provided free of charge, without restriction of use. For the full license information\nsee the [Copernicus Regulation.](http://www.copernicus.eu/main/data-access/)\n\nIf you are using the data as a layer in a published map, please include the following\nattribution text:\n| **Attribution text:** \"Source: EC JRC/Google\"\n\nGet access to Earth Engine\n--------------------------\n\nAccess to Earth Engine is free, but requires signup. To get access, please fill out our\n[Earth Engine signup form](https://earthengine.google.com/signup)\nto apply for an Evaluator account. Those granted access will receive an email within\na few business days with further instructions.\n\nOnce you're familiar with the Code Editor, [get started on the tutorial](/earth-engine/tutorials/tutorial_global_surface_water_02)!"]]
