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1) In meteorology usual term for water that is either in a liquid form of rain or Storm and / or in solid form Hail , Sleet, or snow from clouds Grieseln falling on the earth, or as a surface precipitate directly by condensation ( dew settles) or Resublimation (Mature) to objects like the Earth's surface. The required amount of rainfall in the wine depends on several factors, such as the water discharge and water storage capacity . The annual lower bound is at least 200 mm of rainfall quantity for quality wine are an average of 500 mm is required in warmer climates with high evaporation 750 mm.
Under the assumption of appropriate soil conditions is no upper limit, as well as more than 1,500 mm can be tolerated, especially in hot areas. Critically, however, may be the time of rainfall. A heavy rain just before the vintage , especially after prolonged drought can have the grapes to swell and the level of Sugar , Acids and Flavourings dilute. Artificial irrigation is regulated differently in most countries responsibility law wine. The rainfall is one of the criteria for the so-called WeinbauwÃ¼rdigkeit .
2) also formed under certain conditions sediment in wine bottles is sometimes referred to as precipitation, see under custody .