CEMAC

Dr Mark Richardson, University of Leeds
The first aim is to support the JWCRP project “Computational Efficiency of UKCA in the Met Office Unified Model“. Establish data paths, software installations and tools for enabling and evaluating OpenMP implementations in the aerosol and chemistry processes. This is a significant enabling component for UKESM with potential application to CMIP6.

Modelling Chinese Air Quality with WRF-Chem

Dr Oliver Wild, University of Lancaster
We will use an atmospheric chemistry-transport model at high resolutions to model the formation and evolution of air pollutants in the urban atmosphere of Beijing. We are particularly interested in developing and evaluating control techniques that will allow decision-makers to mitigate urban air pollution. We are also particularly interested in control techniques that inform mitigation of serious air pollution episodes. This modelling project is very numerically intensive and requires running a parallel and well-tested WRF-Chem model on a large number of computational cores.

High resolution Wind Flow Modelling

Dr Alan Gadian, University of Leeds
This project is aimed at improving the knowledge of the modelling of near-surface wind flow off the island of Bermuda. For this case, and sailing in general,  knowledge of the variability and strength of the wind for both the optimal construction of the boat and as well as preparing the crew for typical and atypical wind and turbulence conditions is essential. This project directly aims to assist the UK team with relevant meteorological input.

Radiative Forcing Model Intercomparison Project

Professor Piers Forster, University of Leeds
The effective radiative forcing, or change in planetary net incoming energy as a result of changes in natural or human-driven effects such as an increase in CO2 levels, is related simply to the eventual global mean temperature change. However, differences in how models treat radiation in the atmosphere, as well as differing responses between models in the stratospheric and tropospheric profiles, means that climate models do not necessarily agree on the effective radiative forcing for the same change in atmospheric composition. Therefore, calculated temperature responses to effective radiative forcing are also likely to show a spread of results. We investigate a proposed novel technique of determining effective radiative forcing in the UK Met Office’s HadGEM2 and HadGEM3 climate models, which will enable better estimates of the global temperature response to changing atmospheric profiles.

Tracking ocean circulation and climate with carbon isotopes

Dr Ruza Ivanovic, University of Leeds
From geological records, we know changes in ocean circulation and climate took place in the recent past that we cannot yet explain or adequately simulate; episodes of several degrees warming and cooling in a few decades-centuries. One reason for this may be that we are misinterpreting the geological data, which are not directly incorporated into our models. Maybe the data show different events than we think. This project tackles this problem; carbon isotopes (geochemical tracers of ocean circulation and climate change) will be incorporated directly into the model for a robust comparison to measured archives. Then, we will simulate scenarios of climate and ocean circulation change to see how they manifest in the geochemistry recorded by geology.

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