The Keeling Curve is a graph that shows the steady rise of atmospheric carbon dioxide throughout the twentieth century. It is named after Charles David Keeling, who identified the increase in carbon dioxide levels and plotted the graph.
A Keeling Plot is a graphical representation of variations in δ13C (carbon isotope ratios) (y-axis), plotted against the inverse of CO2 concentration (1/[CO2]) (x-axis), used to identify sources and sinks of carbon within ecosystems.
Keeling may also refer to: