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Wine is the main economic resource in the 'Area of Jerez', located in the south of Spain. It is one of the most important wine tourism destinations in the world. However, its sustainable production process, so strongly influenced by climatic conditions, can be clearly affected by the phenomenon of global warming. The ageing process of "Sherry wine" takes place in buildings known as 'Cathedral warehouses', an example of Nearly-Zero Energy Buildings (NZEBs). For centuries, they have been used to provide specific ecological conditions for biological ageing without any type of mechanical heating/cooling system. The purpose of this paper is to assess the impact of climate change on this production model. For this, the annual thermal behavior of a representative winery was monitored during several years. The first energy simulation model of this type of buildings was developed and validated (daily R2 = 99%; hourly R2 = 97%). Finally, the model was simulated by modifying the outdoor climatic conditions (9 years training data sets) for a climate change scenario, applying the 'morphing' method for the transformation of the weather data. The results show that, by the middle of this century, the average outdoor temperature will increase by 2.3 °C (in summer up to 3.6 °C). As a consequence, the temperature in the ageing zone would exceed the comfort limit for 19% of the year, (up to 34% in hot years). For 2080, the prediction is even worse (average value of 27%). As a result, the microorganisms responsible for this unique process could not maintain their activity. This fact will force the sector to face a harsh reconversion through the adoption of new mechanisms and strategies, which endangers the economic sustainability of an entire region dedicated to this practice. Beyond the specific case, the work highlights the need to evaluate the future behavior of NZEBs through simulation. [Display omitted] • Assess the impact of climate change in a Near Zero Energy Building. • "Cathedral warehouses" will lose their usefulness by the middle of this century. • Comfort limits will be exceeded 19% of the year, interrupting biological ageing. • The economic sustainability of an entire region would be endangered. • The need to evaluate the future behavior of Near Zero Energy Building is highlighted. [ABSTRACT FROM AUTHOR]

The Circular Economy (CE) model has recently gained a lot of attention as an effective way to cope with the urgent issues related to Climate Change and sustainability. The European Union (EU) has launched a series of reports, plans and activities known as the Circular Economy package which main goal is to expand the CE model throughout Europe, with large companies leading the initiative. This paper aims at assessing their engagement with the CE model, and if their actual understanding, practice and reporting of CE corresponds to the standards and principles promoted by the EU CE Action Plan. The research does also analyse if large companies' reporting in terms of CE can be assimilated to their environmental sustainability reporting or if they consider it a different topic, with different drivers. The reports of the largest companies in Spain (IBEX35) were studied in full detail as well as their environmental scores (ESG) from DataStream database, and activity sector. Results show interesting implications highlighting how companies' perception over CE, as reported, differs from the EU CE Action Plan approach and from the environmental sustainability framework, especially when taking into account the type of activity. [ABSTRACT FROM AUTHOR]

The wine sector is highly vulnerable to climate change, especially due to the dependence of vine growing on climatic and environmental conditions. For this reason, adaptation and mitigation measures are important for the future of the wine industry. However, the process of adopting these measures by companies is not sufficiently known. The objective of this paper is to study the action against climate change by the wine sector in Spain, which has 13% of the world's vineyard area. Data capture was carried out through a survey of wineries. First, a questionnaire was designed and validated. This process included semi-structured and in-depth interviews with several winery owners. Second, the survey was conducted on a simple random sample of 87 Spanish wineries, stratified by region. Third, using a multivariate technique of factor analysis, the research found a set of 11 indicators describing the different types of measures adopted. In addition, a cluster analysis provided four different winery profiles. The first group comprises 37% of the wineries, whose sustainability actions are very focused on viticulture. The second group includes 22% of the wineries, which manage their activities according to widespread sustainability criteria. The third group is composed of 21% of the wineries, whose mitigation measures are only focused on energy. The fourth group includes 21% of the wineries, which are characterized by the absence of measures to achieve sustainability. Finally, the characteristics of the wineries and their responses to specific variables were studied, in relation to their belonging to the groups. The results show that the wineries of all the groups are aware of the existence of climate change and that it can seriously affect them. However, the adoption of measures is very variable from one group to another. Regarding the characteristics of the wineries, large companies and young professionals are positively related to the professional management of sustainability. The certification of organic production is frequent in the wineries, but it is not enough to guide them in their action against climate change. The calculation of the carbon footprint, which is not widespread, is associated with the wineries that systematically manage sustainability. In view of the results, some policies are suggested to favour the action of the vitivinicultural sector against climate change. Image 1 • A survey shows that Spanish wineries are aware of the risks of climate change. • Four profiles of wineries have been found, according to the measures they adopt. • The adoption of measures is limited and very variable from one group to another. • A wine sustainability is needed, covering both mitigation and adaptation. • Information to manage actions against climate change must be provided externally. [ABSTRACT FROM AUTHOR]