Mauna Loa and South Pole Graphic | Scripps CO2 Program

Mauna Loa and South Pole


Description

Black Curve: Monthly average atmospheric carbon dioxide concentration versus time at Mauna Loa Observatory, Hawaii (20 °N, 156 °W) where CO2 concentration is in parts per million in the mole fraction (p.p.m.). Monthly data are shown as dots and connected with straight lines. The record is distinguished by its pronounced seasonal cycle.

Red Curve: Monthly average atmospheric carbon dioxide concentration versus time at the South Pole, Antarctica where CO2 concentration is in parts per million in the mole fraction (p.p.m.). Monthly data points are shown as dots and connected approximately by a smooth curve.

Data from Scripps CO2 Program.


Data sharing policy

The data and graphics on this website are made freely available, with the understanding that appropriate credit will be given. For applications supporting peer-reviewed scientific publications, coauthorship may sometimes be appropriate. An example would be if an important result or conclusion depends on this product, such as the first account of a previously unreported phenomenon. Ethical usage requires disclosing intentions at early stages of the work in order to avoid duplicating ongoing studies at Scripps. For applications where coauthorship is not needed, which includes all applications outside of the peer-reviewed scientific literature, it is sufficient to acknowledge the Scripps CO2 program as the source. Please direct queries to Ralph Keeling (rkeeling@ucsd.edu)