atmosphere Review A Geological Perspective on Climate Change and Building Stone Deterioration in London: Implications for Urban Stone-Built Heritage Research and Management Sudeshna Basu 1,2,*, Scott Allan Orr 3 and Yasemin D. Aktas 4,5 1 Department of Earth Sciences, University College London, 5 Gower Place, London WC1E 6BS, UK 2 Department of Chemical Engineering, University College London, Bloomsbury, London WC1E 7JE, UK 3 Institute for Sustainable Heritage, University College London, Central House, 14 Upper Woburn Place, London WC1H 0NN, UK;
[email protected] 4 Department of Civil, Environmental and Geomatic Engineering, Kings Cross, London WC1E 6DE, UK;
[email protected] 5 UK Centre for Moisture in Buildings (UKCMB), London WC1H 0NN, UK * Correspondence:
[email protected] Received: 1 June 2020; Accepted: 21 July 2020; Published: 26 July 2020 Abstract: The decay rates of building stones and, the processes leading to their deterioration is governed by intrinsic properties such as texture, mineralogy, porosity and pore size distribution, along with other extrinsic factors related to the climate and anthropogenic activities. For urban cities such as London, the influence of extrinsic factors like temperature and rainfall, as well as the concentrations of air pollutants, such as sulphur and nitrogen oxides, along with the emissions of carbonaceous aerosols, can be particularly significant. While considering the long-term preservation of building stones used in various heritage sites in the city, it is imperative to consider how the stone could be affected by the changing air pollutant concentrations, superimposed on the effects of climate change in the region, including rising average annual temperature and precipitation with a hotter, drier summer and, warmer, wetter winter months.