Which characteristic would be most important when a scientist needs to study the changes in climate condicions over a five year period

Answer

Well, this should be changes in the temperatures of the Earth

Explanation

A study in climatic changes over a period of 5 years should first observe how the temperature is balanced on Earth as a factor to determine the amount of energy entering and exiting the Earth. The elements of study should cover differences in the amount of energy reaching the Earth, differences observed in the reflectivity of the atmosphere and surface of the Earth and the greenhouse effect