The International Food Policy Research Institute’s International Model for Policy Analysis of Agricultural Commodities and Trade (IMPACT) supports analysis of long-term challenges and opportunities for food, agriculture, and natural resources at global and regional scales. IMPACT is continually being updated and improved to better inform the choices that decisionmakers face today. This document describes a new country-level version of the model. IMPACT-SIMM (International Model for Policy Analysis of Agricultural Commodities and Trade–Standard IFPRI Multimarket Model) is a partial equilibrium, multi-market, simulation model of the production, supply, and demand of agricultural commodities within a country or group of countries. It simulates the operation of agricultural markets, solving for equilibrium prices within a country and, in multi-country mode, global markets. It is designed to be a “portable” and potentially open-source version of the IFPRI (International Food Policy Research Institute) IMPACT3 model documented in Robinson et al. (2015). IMPACT-SIMM shares model specification, equations, and computer code with IMPACT3, but is designed to be more flexible in application. It allows users to specify a standard multi-market model at any level of aggregation by commodities and countries by changing data inputs, without any change in model code. This model system supports longer-term scenario analysis to provide researchers and policymakers with a flexible tool to assess and compare the potential effects of changes in biophysical systems, socioeconomic trends, technologies, and policies at the level of individual countries or groups of countries.

The International Food Policy Research Institute’s IMPACT model is a robust tool for analyzing global and regional challenges in food, agriculture, and natural resources. Continuously updated and refined, IMPACT version 3.6 is the latest update to the model for continuously improving the treatment of complex issues, including climate change, food security, and economic development. IMPACT 3.6 multimarket model integrates climate, crop simulation, and water models into a comprehensive system, providing decision-makers with a flexible platform to assess the potential impacts of various scenarios on biophysical systems, socioeconomic trends, technologies, and policies.

The International Food Policy Research Institute's International Model for Policy Analysis of Agricultural Commodities and Trade (IMPACT) supports analysis of long-term challenges and opportunities for food, agriculture, and natural resources at global and regional scales. IMPACT is continually being updated and improved to better inform the choices that decisionmakers face today. This document describes the latest version of the model. IMPACT version 3 expands the geographic and commodity scope of the model in response to desires expressed by researchers and policymakers to address more complex questions involving climate change, food security, and economic development into the future. IMPACT 3 is an integrated modeling system that links information from climate models (Earth System Models), crop simulation models (for example, Decision Support System for Agrotechnology Transfer), and water models linked to a core global, partial equilibrium, multimarket model focused on the agriculture sector. This model system supports longer-term scenario analysis through the integration of these multidisciplinary modules to provide researchers and policymakers with a flexible tool to assess and compare the potential effects of changes in biophysical systems, socioeconomic trends, technologies, and policies.

The Agricultural Trade Policy Simulation Model (ATPSM) is designed of detailed analysis of agricultural policy issues. It can be used as a tool by researchers and negotiators alike for quantifying the economic effects at the global and regional level of recent changes in national trade policies. The Model covers 161 countries and 35 agricultural commodities, and includes an extensive database. The Model also provides estimates of changes in trade volumes, prices, government revenues and welfare indicators linked to changes in the general trade policy environment. The Model can be downloaded free from the UNCTAD website at http://www.uncatd.org/tab/.

PIM had a productive final year centered on synthesizing findings while continuing to respond to demand on the impacts of COVID-19 and preparing the transition to the new CGIAR portfolio. PIM findings and engagement contributed to Myanmar’s response to COVID-19, South Africa’s policies on resilience to climate change, Tunisia's policies for pastoral development, a reform of Nigeria’s national agricultural research system, Ghana’s fish seed and farm certification system, gender strategies for three agricultural value chains in Honduras, and genome editing guidelines for the agricultural sector in four African countries. PIM research informed policy documents of FAO, IFAD, One CGIAR, the UK Government, the World Bank and the World Food Programme. PIM tools enabled more equitable co-management of 76 protected areas in Peru and informed World Bank social protection projects. Books on food security in Bangladesh and Malawi, trade in Latin America, African agricultural value chains and gender were published. 42 PIM synthesis briefs and notes were issued, summarizing research results in key thematic areas. PIM contributed 181 journal articles, 8 journal issues (on demand driven seed systems, China’s response to COVID-19, agriculture and food security in China under COVID-19, food loss and waste, landscape restoration, multistakeholder fora in forestry and two issues on gender), 15 book chapters and about 500 non-peer-reviewed outputs. 16 PIM webinars were organized. PIM’s contributions to the United Nations Food Systems Summit covered agricultural extension, food system innovations and digital technologies, the future of small farms, the science-policy interface, the cost of ending hunger by 2030, food waste and loss, management of the commons and gender. Building on past PIM investments in economywide modeling tools and social accounting matrices, PIM teams continued to assess the impacts of COVID-19 and policy responses at country level. Lessons learned from PIM country-level analyses on COVID-19’s impacts on food systems, poverty and diets are summarized in a chapter of the IFPRI 2022 book “COVID19 and global food security: Two years later”. A paper in partnership with the CGIAR COVID19 Hub reviewed the literature on agri-food value chains for evidence of fractures and resilience in response to the pandemic. The results of coordinated studies on the impacts of COVID-19 on value chains in different countries were published. Several cross-CGIAR outputs initiated by PIM speak to the fulfillment of PIM’s convening role as an integrating program: the CGIAR Foresight Report and CGIAR foresight website; several outputs produced through the CGIAR Community of Excellence on Seed Systems Development, and the CGIAR book “Advancing gender equality through agricultural and environmental research: Past, present, and future” are examples. Other examples of PIM global public goods produced in 2021 are 27 innovations at various stages of uptake, a cross-cutting effort to distill PIM lessons on migration; new or updated social accounting matrices for 25 countries; and lessons and tools on stakeholder platforms for natural resource governance. Independent reviews assessed the effectiveness of PIM’s partnerships and the use by partners of PIM’s work on economywide modelling, agricultural insurance, tenure and governance, and the Ag-Incentives database.