Abstract Climate change is expected to decrease mean precipitation in California, but changes hydroclimate extremes are likely have more immediate and significant impacts on California water resources, ecosystems, economy. Paleoclimate records can provide valuable baseline data for constraining natural variability improving climate projections, quantitative limited. A new study by de Wet et al....

We describe a general Godunov-type splitting for numerical simulations of the Fisher-Kolmogorov-Petrovski-Piskunov growth and diffusion equation on a world map with Neumann boundary conditions. The procedure is semi-implicit, hence quite stable. Our principal application for this solver is modeling human population dispersal over geographical maps with changing paleovegetation and paleoclimate ...

A new temperature data portal will aid scientists in tracking and accessing paleoclimate from the Miocene, a past warm climate interval future analogue.

[1] Paleoclimate records from glacial Indian and Pacific oceans sediments document millennial-scale fluctuations of subsurface dissolved oxygen levels and denitrification coherent with North Atlantic temperature oscillations. Yet the mechanism of this teleconnection between the remote ocean basins remains elusive. Here we present model simulations of the oxygen and nitrogen cycles that explain ...

North Atlantic sea surface temperatures experience variability with a periodicity of 60-80 years that is known as the Atlantic Multidecadal Oscillation (AMO). It has a profound imprint on the global climate system that results in a number of high value societal impacts. However the industrial period, i.e. the middle of the 19th century onwards, contains only two full cycles of the AMO making it...

The Last Glacial Maximum has been one of the first foci of the Paleoclimate Modelling Intercomparison Project (PMIP). During its first phase, the results of 17 atmosphere general circulation models were compared to paleoclimate reconstructions. One of the largest discrepancies in the simulations was the systematic underestimation, by at least 10C, of the winter cooling over Europe and the Medit...

Paleobotanists have long built leaf climate models based on site mean of physiognomic characteristics woody dicotyledons species (WDS) for estimating past climate. To explore the potential order Ericales in paleoclimate, we developed two linear each climatic factor. One is WDS, and other both WDS characters (WDS-E). We found that, compared with models, WDS-E improved greatly annual precipitatio...