{"type":"script","doc_desc":{"producers":[{"name":"Reproducibility WBG","abbr":"DECDI","affiliation":"World Bank - Development Impact Department","role":"Verification and preparation of metadata"}],"prod_date":"2026-04-30","version":"1"},"project_desc":{"authoring_entity":[{"name":"Robin Middelanis","affiliation":"World Bank","email":"rmiddelanis@worldbank.org"},{"name":"Unnada Chewpreecha","affiliation":"World Bank","email":"uchewpreecha@worldbank.org"},{"name":"Bramka Arga Jafino","affiliation":"World Bank","email":"bjafino@worldbank.org"},{"name":"Rachel Koh","affiliation":"CNRS@CREATE","email":"kohzq.rachel@gmail.com"},{"name":"Stefano Galelli","affiliation":"Cornell University","email":"galelli@cornell.edu"},{"name":"Moussa Sidibe","affiliation":"World Bank","email":"msidibe3@worldbank.org"},{"name":"Paolo Avner","affiliation":"World Bank","email":"pavner@worldbank.org"}],"title_statement":{"title":"Reproducibility package for Economy-Wide Benefits Of Improved Hydrometeorological Forecasts And Services In Cambodia","idno":"RR_KHM_2026_634"},"data_statement":"All data sources are publicly available and included in the reproducibility package. ","software":[{"name":"Python","version":"3.10"},{"name":"Eviews","version":"14"}],"scripts":[{"title":"Reproducibility package for Economy-Wide Benefits Of Improved Hydrometeorological Forecasts And Services In Cambodia","date":"2026-04","notes":"Computational reproducibility verified by Development Impact (DECDI) Analytics team, World Bank.","instructions":"See README in reproducibility package.","file_name":"RR_KHM_2026_634","zip_package":"RR_KHM_2026_634.zip"}],"repository_uri":[{"name":"Reproducible Research Repository (World Bank)","uri":"https:\/\/reproducibility.worldbank.org"}],"production_date":"2026-04-30","abstract":"This paper estimates the macroeconomic benefits of improved hydrometeorological forecast services in Cambodia using the World Bank's MFMod macro-fiscal model. Three impact channels\u2014disaster risk reduction (DRR) for flood damages, agricultural productivity increase, and electricity cost reduction\u2014are considered under optimistic and pessimistic climate change projections until the year 2050. Benefits under current forecast skill and continued investment into forecast improvements are compared to a control scenario without any forecast benefits. When all channels operate jointly, GDP is estimated to be 2.50\u20134.30% above the no-forecast control by 2050. Continued improvement of forecast services yields a 1.3\u20131.4% increase in GDP, compared to the status quo scenario with constant forecast skill. Agricultural productivity is the dominant channel for economic benefits, while DRR contributions grow with climate severity and become increasingly important under the pessimistic scenario. Electricity cost reduction (through improved hydropower production) contributes positively across all scenarios, though at a lower order of magnitude. Aggregate benefits are larger under the pessimistic climate scenario, because DRR channel returns amplify with increasing flood exposure. Back-of-the-envelope estimates suggest large benefit-cost ratios, making an economic case for improved hydrometeorological forecasts and services. The results provide quantitative support for sustained investment in hydrometeorological infrastructure.","geographic_units":[{"name":"Cambodia","code":"KHM"}],"keywords":[{"name":"Cambodia"},{"name":"Economic Development"},{"name":"Weather Forecast Value"},{"name":"Climate Adaptation"},{"name":"Macroeconomic Modeling"}],"topics":[{"id":"Q54","uri":"https:\/\/www.aeaweb.org\/econlit\/jelCodes.php?view=jel","vocabulary":"Journal of Economic Literature (JEL)","name":"Climate \u2022 Natural Disasters and Their Management \u2022 Global Warming","parent_id":"Q5"},{"id":" C63","uri":"https:\/\/www.aeaweb.org\/econlit\/jelCodes.php?view=jel","vocabulary":"Journal of Economic Literature (JEL)","name":"Computational Techniques \u2022 Simulation Modeling","parent_id":"C6"},{"id":" O13","uri":"https:\/\/www.aeaweb.org\/econlit\/jelCodes.php?view=jel","vocabulary":"Journal of Economic Literature (JEL)","name":"Agriculture \u2022 Natural Resources \u2022 Energy \u2022 Environment \u2022 Other Primary Products","parent_id":"O1"},{"id":" O53","uri":"https:\/\/www.aeaweb.org\/econlit\/jelCodes.php?view=jel","vocabulary":"Journal of Economic Literature (JEL)","name":"Asia including Middle East","parent_id":"O5"},{"id":" H41","uri":"https:\/\/www.aeaweb.org\/econlit\/jelCodes.php?view=jel","vocabulary":"Journal of Economic Literature (JEL)","name":"Public Goods","parent_id":"H4"}],"output":[{"type":"Working Paper","description":"Policy Research Working Papers (PRWP)","title":"Economy-Wide Benefits Of Improved Hydrometeorological Forecasts And Services In Cambodia"}],"language":[{"name":"English","code":"EN"}],"technology_requirements":"Runtime: 30 minutes","disclaimer":"The materials in the reproducibility packages are distributed as they were prepared by the staff of the International Bank for Reconstruction and Development\/The World Bank. The findings, interpretations, and conclusions expressed in this event do not necessarily reflect the views of the World Bank, the Executive Directors of the World Bank, or the governments they represent. The World Bank does not guarantee the accuracy of the materials included in the reproducibility package.","license":[{"name":"Modified BSD3","uri":"https:\/\/opensource.org\/license\/bsd-3-clause\/"}],"contacts":[{"name":"Robin Middelanis","affiliation":"World Bank","email":"rmiddelanis@worldbank.org"},{"name":"Reproducibility WBG","affiliation":"World Bank","email":"reproducibility@worldbank.org"}],"reproduction_instructions":"To reproduce the findings in this paper, a user should:\n1. Restore the environment using `requirements.txt` (for Python in Command Prompt) or `environment.yml` (if using Conda).\n2. Run python script `prepare_impact_channel_data.py`.\n3. Open EViews and run `KHM_shocks_EWS.prg`.\n4. Run python script `process_model_results.py`.\n\nAll tables and figures will be generated upon completion.","technology_environment":"Paper exhibits were reproduced on a computer with the following specifications:\n\u2022 OS: Windows 11 Enterprise\n\u2022 Processor: INTEL(R) XEON(R) PLATINUM 8562Y+ 2.80 GHz (2 processors)\n\u2022 Memory available: 32.0 GB","datasets":[{"uri":"https:\/\/www.worldbank.org\/en\/publication\/macro-poverty-outlook\/mpo_eap#archives","name":"Macroeconomic variables in Cambodia MFMod","note":"Source: World Bank\nFilename: Data\/KHMSoln_clean.WF1\nThis data is updated frequently so the avaialble data may not match the version included in the reproducibility package.","access_type":"Data is publicly available and included in the reproducibility package.","license_uri":"https:\/\/www.worldbank.org\/en\/about\/legal\/terms-of-use-for-datasets","citation":"World Bank. 2025. \"Macroeconomic variables in Cambodia MFMod [dataset],\" Retrieved from https:\/\/www.worldbank.org\/en\/publication\/macro-poverty-outlook\/mpo_eap#archives, October 2025."},{"note":"Source: Water Resources Research\nFilenames: Q_m_avg.csv, syscost_m.csv","citation":"Koh, R., & Galelli, S. (2024). Evaluating streamflow forecasts in hydro-dominated power systems\u2014When and why they matter. Water Resources Research, 60, e2023WR035825. https:\/\/doi.org\/10.1029\/2023WR035825","uri":"https:\/\/zenodo.org\/records\/8163034","name":"Data from \"Evaluating Streamflow Forecasts in Hydro-Dominated Power Systems\u2014When and Why They Matter\"","access_type":"Data is publicly available and included in the reproducibility package.","license_uri":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","license":"Creative Commons Attribution 4.0 International (CC BY 4.0)"},{"uri":"https:\/\/climateknowledgeportal.worldbank.org\/country\/cambodia\/climate-data-projections","name":"Cambodia - Mean Projections ","note":"Source: World Bank\nFilename: projected-average-mean-s.csv","access_type":"Data is publicly available and included in the reproducibility package.","license_uri":"https:\/\/www.worldbank.org\/en\/about\/legal\/terms-of-use-for-datasets","citation":"World Bank. 2025. \" Cambodia - Mean Projections [dataset],\" Retrieved from https:\/\/climateknowledgeportal.worldbank.org\/country\/cambodia\/climate-data-projections, October 2025."}]},"datacite":{"creators":[{"givenName":"Robin","familyName":"Middelanis","nameType":"Personal","affiliation":[{"name":"World Bank"}]},{"givenName":"Unnada","familyName":"Chewpreecha","nameType":"Personal","affiliation":[{"name":"World Bank"}]},{"givenName":"Bramka Arga","familyName":"Jafino","nameType":"Personal","affiliation":[{"name":"World Bank"}]},{"givenName":"Rachel","familyName":"Koh","nameType":"Personal","affiliation":[{"name":"CNRS@CREATE"}]},{"givenName":"Stefano","familyName":"Galelli","nameType":"Personal","affiliation":[{"name":"Cornell University"}]},{"givenName":"Moussa","familyName":"Sidibe","nameType":"Personal","affiliation":[{"name":"World Bank"}]},{"givenName":"Paolo","familyName":"Avner","nameType":"Personal","affiliation":[{"name":"World Bank"}]}],"titles":[{"lang":"en","title":"Reproducibility package for Economy-Wide Benefits Of Improved Hydrometeorological Forecasts And Services In Cambodia"},{"title":"RR_KHM_2026_634","titleType":"Other"}],"publisher":"World Bank","publicationYear":"2026","types":{"resourceType":"Reproducibility package","resourceTypeGeneral":"Other"},"url":"https:\/\/reproducibility.worldbank.org\/index.php\/catalog\/study\/RR_KHM_2026_634","language":"en"},"tags":[{"tag":"DOI"},{"tag":"Open Code"},{"tag":"Open Data"}],"schematype":"script"}