Meterology
 

According to the Swan Orientation filmstrip, meteorology is one of six areas of study in the DHARMA Initiative.

What is Meteorology?

From  Wikipedia.org:

Meteorology is the scientific study of the atmosphere that focuses on weather processes and forecasting.
Meteorological phenomena are observable weather events which illuminate and are explained by the science of meteorology. Those events are bound by the variables that exist in Earth's atmosphere. They are temperature,
pressure, water vapor, and the gradients and interactions of each variable, and how they change in time.
The majority of Earth's observed weather is located in the troposphere.

Meteorology, climatology, atmospheric physics, and atmospheric chemistry are sub-disciplines of the atmospheric sciences. Meteorology and hydrology comprise the interdiscplinary field of hydrometeorology.