Reaching the necessary level of precision requires correcting the data for small perturbations in Earth's orbit owing to the other planets in our solar system. (science.sciencemag.org)
She is finishing her Ph.D. program through Murdock University (Australia) on the impact of perturbations on the health and behavior of a critically endangered Australian marsupial called the woylie (or brush - tailed bettong). (lsu.edu)
They also manifest as perturbations in the tropical weather induced by anomalous middle latitude circulation patterns (e.g., mid-latitude blocking anticyclone), such as cold surges or monsoon breaks. (eos.org)