|From||"Roger Brugge" <email@example.com>|
|Date||Mon, 9 Jan 2012 16:20:04 +0000|
Forwarded from CLIMLISt... PhD projects are available in GeoSciences, University of Edinburgh. <http://www.ed.ac.uk/schools-departments/geosciences/postgraduate/phd/programmes-supervisors/physical-sciences/phd-projects?NotHG=1&cw_xml=index.html> I would like to draw your attention to two projects in particular: 1. Project: Causes of regional climate variability over the last millennium Supervisors: Prof Gabriele Hegerl and Dr. Rob Wilson (Edinburgh/St. Andrews) Email: <firstname.lastname@example.org>; <email@example.com> Reconstructions of climate for the last millennium indicate substantial regional climate variability and change. For example, climate reconstructions in North America over the last millennium shows periods of severe drought. Such 'megadrought' events would have a severe societal impact if they happened again, and it is unclear if current climate change could trigger such severe droughts in the future. Temperature reconstructions of past climate variability are available for parts of North America and Eurasia, and indicate substantial variability in the past. Coral-based reconstructions of tropical climate are also available, as well as regional high latitude treering records, e.g. Fennoscandia. This project will focus both on simulated and reconstructed/observed records of climate variability in North America and the tropics, with the goal of identifying causes and contributors to megadroughts and past temperature variations, including external influences such as volcanic eruptions, and internal climate variability such as El Nino and its decadal relatives, or the North Atlantic Oscillation. 2. Influence of regional processes and forcings on changing temperature extremes Supervisors: Dr Gabi Hegerl; Dr. David Stevenson Email: <firstname.lastname@example.org>, <David.S.Stevenson@ed.ac.uk> The probability of climate extremes is changing in a changing climate, and many impacts of climate change are linked not to changes in mean climate, but to changes in climate extremes and climate variability. There are strong indications that changes in the intensity and frequency of temperature extremes occur with anthropogenic warming, but the changes simulated by climate models are not everywhere in agreement with those observed. Some regions of disagreement,and the different levels of change observed in daytime maximum and daytime minimum temperatures point towards influences from regional scale changes in atmospheric composition, particularly aerosol forcing, and from regional scale changes in land use. Regional temperature distributions also highlight the importance of soil moisture and snow and ice cover to the daily temperature distribution. Scientific understanding of the role of these more regional processes and of aerosol forcing on temperature extremes is presently limited. The goal of this research is to assess how aerosols, land use change and changes in the local hydrological cycle and in snow cover may have impacted regional changes in the probability of climate extremes over the 20th century, and to determine if these regional factors may contribute to model-data mismatches over the 20th century. The ultimate goal of this research is to produce better predictions of future changes in extremes and their impacts. The projects are open for UK, EU and Intl applicants, but funding is only available for UK citizens or residents (see webpage details) based on interviews. Application deadline February 1, 2012 -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
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