Monitoring, understanding, and predicting oceanic variations associated with natural climate variability and human - induced changes, and assessing the related roles of the ocean on multiple spatial - temporal scales. (oceanobs19.net)
Natural climate variability over recent geological time is greater than reasonable estimates of potential human - induced greenhouse gas changes. (opendemocracy.net)
Understanding natural climate variability is essential for understanding man - made climate change. (usask.ca)