Eaps 327: science, climate and society exam 1 study guide. The greenhouse effect is the process by which radiation from the planet"s atmosphere warms the planet"s surface to a temperature above what it would be without its atmosphere. The keeling curve is a graph that plots the ongoing change in concentration of carbon dioxide in earth"s atmosphere since the 1950s. Measurements were taken at the mauna loa observatory in hawaii. The curve shows the increasing concentration of carbon dioxide in the atmosphere over time. Be able to classify statements into weather/climate categories. (we"ll practice this in class before the exam. ) Climate: the weather conditions prevailing in an area in general or over a long period of time: know generally where warm, temperate, and cold climates on earth are. Warm climates are generally around at and right above and below the equator.