IGPP Seminar Series

Current Efforts to Model and Measure Interplanetary 'Weather'

by Dr. Janet Luhmann
UC Berkeley

Abstract

Current interest in our own interplanetary environment is primarily motivated by the practical desire for understanding and forecasting "space weather", but the study of the interplanetary environment influences much broader thinking in areas of astronomy, astrophysics, plasma physics, atmospheric physics, and solar system and planetary evolution. For example, the early Sun, which greatly impacted the evolution of planetary atmospheres, is best represented by our current Sun during active solar periods - at least in terms of its more energetic photon and particle outputs. Active solar conditions have distinctive effects on the Earth and the planets that provide insight into their early history, and may even provide clues about the processes affecting the late stages of protoplanetary evolution. Similarly, climate on Earth and other terrestrial planets responds to the Sun's outputs, but some responses are not simply due to the solar constant trends and variations. The cause-and effect of the physics behind these responses is increasingly revealed by improving and more detailed solar and interplanetary measurements and modeling. This seminar describes current and new efforts to understand space weather as a coupled system using a combination of state-of-the-art models and observations.
Tuesday, 29 November 2005
3845 Slichter Hall
Refreshments at 3:45 PM
Lecture at 4:00 PM