Assessing how production and use of resources affect climate change

The Climate, Land-use, Energy and Water Systems (CLEWs) models are focused on assessing interlinkages between resource systems in order to understand how production and use of food, energy and water security resources may contribute to climate change, and how climate change may affect resource systems. The models also assess where pressure points exist and how to minimise trade-offs. This type of framework for integrated resource assessments involves a strong quantification process which requires the development of sectoral models (for water, energy and land use), taking in consideration different climate futures.  The framework is applicable to different geographical scales, from global, to regional, national and urban levels. 


Data and Analytics



Integration Tools - Acceleration – System Thinking and Dynamic Simulation ModelsRisk-Informed Development Tools - Risk Assessment, Early Warning and Disaster Information Management


Guidelines and diagnosticsSimulation models

Country case


Mexico City shares the sustainability challenges of other megalopolis around the world. Securing access to water, good air quality, reliable and efficient transport and dignified livelihoods call for well-designed, holistic plans and policies. That is why the Office of the Mayor of Mexico City requested UN support to develop integrated analyses which will inform its 20-year development plan. Using CLEWs and other integrated methodologies, the UN and UNDP are assessing policy options to strengthen the positive interlinkages across various development dimensions and to minimise inevitable trade-offs, in partnership with local and federal government institutions. The objective is to frame alternative scenarios for the management of water, land use, renewable energy, the expansion of public transportation, including electric; as well as economic growth and structural transformation. Preliminary results will be available by first quarter of 2021.