Accretion (meteorology) Accretion (meteorology) Accretion is defined as the gradual collection of something over time. In meteorology or atmospheric science it is the process of accumulation of frozen water as precipitation over time as it descends through the atmosphere, in particular when an ice crystal or snowflake hits a supercooled liquid droplet, which then freeze together, increasing the size of the water particle. The collection of these particles eventually forms snow or hail in clouds and depending on lower atmosphere temperatures may become rain, sleet, or graupel. Accretion is the basis for cloud formation and can also be seen as water accumulates
What Have They Done to the Rain What Have They Done to the Rain "What Have They Done to the Rain" is a song by Malvina Reynolds. Composed in 1962 and first entitled "Rain Song", it was written as part of a campaign to stop nuclear testing in the atmosphere, which was producing fall-out. The song was recorded by The Searchers, reaching number 29 on the U.S. charts and number 13 in the UK in 1965. It has been recorded by many other artists including Esther & Abi Ofarim (1965), who also recorded a version in French 'Tout est étrange sous la pluie' the same year. The