A meteorologist is the person, not the study. The study is meteorology; this word is the scientist who does it — measuring weather, explaining it, and often saying what it will do next. Typhoons, rainfall, temperature, wind: that is their work. On television the smiling weather presenter is sometimes a real meteorologist, and sometimes a presenter reading a scientist's chart. Though actually, English is a bit loose here, and news programmes happily call both of them meteorologists. The trained job is still a science job, not 'someone who likes looking at clouds'. It is also not a climate scientist, who looks at the usual weather of a place over many years. In casual talk people also say weather forecaster or weather person; meteorologist sounds more like the expert behind the map.