Slayt 1 - RTC, Regional Training Centre - Turkey

3 reasons processes need to be parameterized1. Phenomena are too small or too complex to be resolvednumerically – computers aren’t powerful enough to directlytreat them2. Processes are often not understood well enough to berepresented by an equation3. Effects profoundly impact model fields and are crucial formaking realistic forecastsProblems associated with using parameterizationsresult from:1. Increasing complexity of parameterization2. Interactions between parameterization schemes – these areharder to trace than errors occurring in a single scheme