A person responsible for the implementation of electronic data interchange systems between companies. The EDI analyst is technical consultant for the trading partners and is involved with deploying systems using the traditional EDI standards and XML-based Web implementations.
Volcanic ash is also harmful when inhaled and  can damage the eyes and lungs. It can clog the engines of cars and  aircraft, and can bring down planes in flight. In some eruptions,  superheated clouds of ash and gas called pyroclastic flows race  down the slopes of a volcano.
In meteorology, a cloud is a visible mass of liquid droplets or frozen crystals made of water or various chemicals suspended in the atmosphere above the surface of a planetary body.errestrial cloud formation is the result of air in any of the lower three principal layers of Earth's atmosphere (collectively known as the homosphere) becoming saturated due to either or both of two processes: cooling of the air, and adding water vapor.