Meteorologist is someone who observes, reports and forecasts weather conditions. In other words it is a person that professionally studies the atmosphere and uses scientific principles to observe, understand, explain, report, and forecast weather conditions, and atmospheric phenomena. Meteorological observations and measurements are made in a variety of ways from many different locations around the world called meteorological sites. Collected data are sent to cataloging centers across the globe. Recent meteorology has advanced through theoretical understanding and through new technologies such as computers, and satellites, which have enhanced data collection and observation of the weather.