Climate change dynamics in atmosphere and space
The global climate has gone through strong changes before anthropogenic influence. Investigating such periods that have not been influenced by human activities helps us to improve the understanding of the climate system and how it will act now and in the future. Equally interesting is to see how natural system dynamics such as the solar activities affects the climate variations on Earth. In particular, it provides estimates of the natural climate variability.
An altered greenhouse gas balance as we see in the past, and now today due to human activities, alters the global temperature which in turn alters vegetation, precipitation, ice cover and ocean circulation. Airborne particles (a few nanometers to a few micrometers in diameter) like aerosols play an important role in the atmosphere. On the one hand, they can interact with solar radiation or cloud formation, and thus play a significant role in the Earth's climate. On the other hand, they can be breathed into human airways, thus being responsible for several adverse health effects.