Bannister 110

Eastern North Pacific tropical cyclone influences on southwestern North America

The eastern North Pacific (ENP) basin boasts a high density of tropical cyclone (TC) formation compared with other ocean basins in which TCs occur. Since ENP TCs can form near or otherwise impact land, they serve as an important yet variable source of summer and fall precipitation in southwestern North America. Higher sea surface temperatures (SSTs) and reduced vertical wind shear associated with El Niño events tend to support increased TC activity, exemplified by the very active 2015 ENP hurricane season.

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Dendro Down Under: Expanding Tree-Ring Research in Australia

In this seminar Heather will discuss her adventures in undertaking dendrochronology in Australia with a focus on three area of dendrochronological studies.

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Lorenzo Defence (Hydrology)

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Dendro class for PLS 361

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Studying solar variability with radiocarbon in tree rings

The Sun provides virtually all the principal energy input to the Earth’s climate system and solar variability is a significant external climate forcing. For instance, the sun irregularly expels large amounts of energetic particles into the interplanetary space and towards Earth which can be observed as so-called solar proton events (SPE), which can potentially cause major damages to satellites and can even disrupt sensitive electronic systems at ground level.