{"id":1033224,"name":"Nuclear warheads yield","unit":"megatons","createdAt":"2025-05-21T11:46:30.000Z","updatedAt":"2026-07-30T01:05:06.000Z","coverage":"","timespan":"1945-2010","datasetId":7095,"shortUnit":"mt","columnOrder":0,"shortName":"nuclear_warheads_yield","catalogPath":"grapher/war/2025-05-15/strategic_nuclear_forces/strategic_nuclear_forces_monadic#nuclear_warheads_yield","descriptionShort":"Equivalent megatonnage.","type":"float","dataChecksum":"6786700903395666824","metadataChecksum":"3462704195869171721","datasetName":"The Strategic Nuclear Forces Dataset","datasetVersion":"2025-05-15","nonRedistributable":false,"display":{"unit":"megatons","shortUnit":"mt","numDecimalPlaces":0},"schemaVersion":2,"processingLevel":"major","presentation":{"topicTagsLinks":["Nuclear Weapons","War & Peace"]},"descriptionKey":"- A \"megaton\" is the explosive energy released by one million tons of TNT. For comparison, the bombs dropped on Hiroshima and Nagasaki were 0.015 and 0.021 megatons, respectively.\n- An equivalent megaton is a way of making the explosive energy of different warheads comparable. It weighs small warheads — in this case those with at most one megaton — more than large ones, because they are relatively more destructive.\n- The exact number of countries' warheads is secret, and the estimates are based on publicly available information, historical records, and experts' estimates.\n- The warheads included here are strategic ones — those designed for use away from the battlefield, such as against military bases, arms industries, or infrastructure.\n- Only those strategic warheads are included that could be deployed — those that could be carried by ballistic missiles, bombers, and submarines in one strike.","dimensions":{"years":{"values":[{"id":1964},{"id":1965},{"id":1966},{"id":1967},{"id":1968},{"id":1969},{"id":1970},{"id":1971},{"id":1972},{"id":1973},{"id":1974},{"id":1975},{"id":1976},{"id":1977},{"id":1978},{"id":1979},{"id":1980},{"id":1981},{"id":1982},{"id":1983},{"id":1984},{"id":1985},{"id":1986},{"id":1987},{"id":1988},{"id":1989},{"id":1990},{"id":1991},{"id":1992},{"id":1993},{"id":1994},{"id":1995},{"id":1996},{"id":1997},{"id":1998},{"id":1999},{"id":2000},{"id":2001},{"id":2002},{"id":2003},{"id":2004},{"id":2005},{"id":2006},{"id":2007},{"id":2008},{"id":2009},{"id":2010},{"id":1960},{"id":1961},{"id":1962},{"id":1963},{"id":1949},{"id":1950},{"id":1951},{"id":1952},{"id":1953},{"id":1954},{"id":1955},{"id":1956},{"id":1957},{"id":1958},{"id":1959},{"id":1945},{"id":1946},{"id":1947},{"id":1948}]},"entities":{"values":[{"id":171,"name":"China","code":"CHN"},{"id":3,"name":"France","code":"FRA"},{"id":137,"name":"India","code":"IND"},{"id":101,"name":"Pakistan","code":"PAK"},{"id":12,"name":"Russia","code":"RUS"},{"id":81,"name":"South Africa","code":"ZAF"},{"id":1,"name":"United Kingdom","code":"GBR"},{"id":13,"name":"United States","code":"USA"}]}},"origins":[{"id":3562,"titleSnapshot":"The Strategic Nuclear Forces Dataset - Monadic data","title":"The Strategic Nuclear Forces Dataset","descriptionSnapshot":"The original data exists in two different formats:\n1. In the dyadic format, each row in the data corresponds to a pair of states, and the nuclear capabilities of a state depends on the distance to the other state. For example, a country may have a certain number of warheads, but not all of them could be delivered to a very distant country.\n2. In the monadic format, each row corresponds to just one country. This data shows the nuclear capabilities of a state, regardless of what country they could be used against.\n\nThe current dataset is presented in monadic format.","description":"This dataset describes times-series-cross-sectional information on all nuclear-armed states' strategic nuclear forces, and provides three indicators: the deliverable strategic warhead count, the equivalent megatonnage (EMT) index, and the counter military potential (CMP) index.","producer":"Suh","citationFull":"Kyungwon Suh - The Strategic Nuclear Forces Dataset, monadic data (2024).\n\nSuh, Kyungwon. 2022. “Nuclear Balance and the Initiation of Nuclear Crises: Does Superiority Matter?” Journal of Peace Research, Vol. 60, No. 2 (March): 337-351. Doi:10.1177/00223433211067899.","attribution":"Suh - The Strategic Nuclear Forces Dataset v2.0 (2023)","attributionShort":"Suh","versionProducer":"v2.0","urlMain":"https://kyungwonsuh.weebly.com/datasets.html","urlDownload":"https://kyungwonsuh.weebly.com/uploads/1/4/6/1/146191116/snforce2_monad.xlsx","dateAccessed":"2025-05-15","datePublished":"2024-01-30","license":{"name":"CC BY 4.0"}}]}