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Can we detect a signal of anthropogenic climate change in California?

PI: Céline Bonfils
Institution: University of California, Merced
Additional Investigators: Philip B. Duffy
Can we detect a signal of anthropogenic climate change in California during the 20th century? If statistically significant trends on a multi-decadal time scale can be interpreted as evidence of climate change, they are not necessarily an indicator of anthropogenic climate change. The objective of the analyses is to investigate “signatures” of past climate change related to human activities, with an emphasis on the state of California. To achieve this, we will need to compare anthropogenic climate change to natural climate variability derived from IPCC simulations, along with historical meteorological and hydrological observations.

Céline Bonfils (post-doctorat e, pending funding by UC Merced) and her adviser Philip B. Duffy.

Model data required:
Near-surface temperature, precipitation, river flows, snow cover, water-equivalent snow depth, sea level, etc from several models. The necessary scenarios are the pre-industrial and the present-day control experiments, along with the climate of the 20th century experiment (20C3M). Both monthly and daily data would be useful for this topic.

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    Lawrence Livermore National Laboratory  |  Physical & Life Sciences Directorate