Vladimir Valentinovich Alexandrov (Russian: Владимир Валентинович Александров; born 1938; disappeared 1985) was a Soviet/Russian physicist who created a mathematical model for the nuclear winter theory.
He disappeared while at the Second International Conference of Nuclear Free Zones Local Authorities in Cordoba, Spain on 31 March and his ultimate fate remains unknown, though speculation continues.
[1][2] One of his last papers was Man and Biosphere published in 1985; it is said to have charted the moving trend in the science of nuclear winter.
When questioned by journalists in 1986, his acquaintances in Madrid gave differing accounts of how much he resisted when being driven towards the Soviet embassy.
In 1983 he was directed by Evgeny Velikhov to work on nuclear winter scenarios, heading an ad hoc group of 20 scientists.
[8] Later they were to rescind these "harsh" criticisms and instead applauded Alexandrov's pioneering work, saying that the Soviet model shared the weaknesses of all the others.