ABSTRACT
Climate change is one of the main challenges and threats of the 21st century. Accordingly, the analysis in this study is based on the conceptual economic strategy of the United Nations Green Economy. Attention is paid to topical issues on the problem of climate change, since the COVID-19 pandemic has significantly affected human economic activities. For this study, three European Union member states have been selected for their economic performance and economic development: Germany, France and Italy. According to the statistics of the International Monetary Fund for 2020, the data on the GDP of these countries is the highest. Compared to other member states, the selected countries have the largest population. Moreover, the leaders of the three states have repeatedly expressed their concern about the problem of climate change. The paper provides a brief analysis of the most important international conferences devoted to the climate problem, as well as a comparison of the main approaches in relation to anthropological factors causing climate change. Unfortunately, the climate agenda is still viewed by some industrialists, government elites and energy sector businessmen as less significant than economic benefits. Academic circles are also divided and many believe that the transition to "green rails” is not feasible at the moment and the climate issue can be postponed. Thus, economic reforms, compliance with environmental recommendations, the introduction of legal and institutional mechanisms and methods remain under the responsibility of each state separately. The avoidance and reluctance of transformations allows us to speak about the initial stage of the formation of awareness of the climate threat. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.
ABSTRACT
Purpose>The Sustainable Development Goal (SDG) 13 is at the core of many sustainability initiatives on Mexican higher education institutions (HEIs). Yet, progress to SDG 13 and the entire 2030 Agenda might today appear unlikely to meet. To change this situation, it is necessary to form professionals aware of the impacts of climate change and competent to respond efficiently to its adaptation and mitigation. In this context, the purpose of this study is to reveal the beliefs and concerns about global warming of Mexican students enrolled in engineering bachelor's degrees at higher education institutes that promote sustainability.Design/methodology/approach>In an exploratory study, engineering university students at six large public universities in Mexico answered questions regarding their beliefs and concerns regarding climate change. The study was carried out by using the Global Warming's Six Americas survey questionnaire. The questionnaire was developed by a research team from the Yale Program on Climate Change Communication at Yale University to identify different audiences within the American public regarding climate change. Participants were recruited via convenience/snowball techniques which provided access to a diverse sample. Those who agreed to partake in the study were directed to an online platform via Google forms. Data were collected from January to April 2021. Coding and data treatment was conducted according to the developers' codebook and SPSS scripts. After running the statistical program scripts to determine the respondents' segment, a univariate descriptive analysis was performed for each item in the questionnaire to describe general properties in each variable. Subsequently, a series of correspondence analyses was conducted to examine the existence of clusters or patterns that could indicate relationships among selected questions.Findings>The findings of this study revealed that the majority of the Mexican engineering higher education students participating in the survey fell in the segment of alarmed, 47.3%, or the segment of concerned, 46.%. Furthermore, 78.6% of higher education students in the alarmed segment were extremely sure that global warming is happening. In addition, 98% believed that it is caused mostly by human activities. Furthermore, 89% stated that global warming would harm them personally significantly and 96% thought that future generations would be harmed considerably. About 78% believed that people in Mexico and the USA are currently being harmed by global warming. On the other hand, about 45% of students in the concerned group noted they were extremely sure. In addition, 96% of them thought that global warming is being produced mostly by anthropogenic activities. Furthermore, 39% said global warming will harm them personally to a great deal. However, nearly 80% noted that global warming would also hurt future generations. Although those students in the alarmed and concerned group show similar beliefs and concerns about global warming, the magnitude of concern was more significant for those in the alarmed segment.Research limitations/implications>There are several limitations to the study. First, the online questionnaire did not allow for clarification or follow-up on behalf of the respondents. Therefore, it could be possible that respondents misunderstood some items. However, the research team took the following measures to limit confusion: (1) The questionnaire had been previously used in several studies. None of these studies reported problems related to confusion, so the research team took this fact as evidence of the acceptable reliability of the questionnaire. (2) A face-to-face pilot test was carried out with 30 university students where no problems of comprehension were reported. (3) The target population had adequate prior knowledge of climate change, so the possibility of misunderstandings was likely low. A second limitation relates to the nature of the study. Fighting to mitigate the global climate crisis is a positive social norm. Respondents may have provided answ rs in line with this social norm and presented themselves as more pro-environmental than they actually are. Second, because of our selection criteria, our data may overestimate the general public's "worldviews” on climate change. Finally, this study was carried on during the COVID-19 pandemic, which could have impacted items' responses. These limitations constitute future opportunities for future research. Specifically, future research might ideally use a large-scale comprehensive study evaluating the broader Mexican public's beliefs and views about climate change. Furthermore, because our data showed that our respondents were very concerned about climate change, but did little in terms of behavioral mitigation, future research should continue to examine and explore differences in various measures of climate friendly behaviors among different segments of the population.Practical implications>This study's findings have at least twofold implications for university authorities and sustainability practitioners in their pursuit of meeting SDG 13. The first implication is related to academic life. Undoubtedly, having a high percentage of students believing in global warming and mainly that this phenomenon is by anthropogenic activities is a strong indication of their knowledge. But, indirectly, these results validate the sustainability teaching and research efforts in their HEIs, implying the commitment to sustaining and improving the quality of their sustainability-educational initiatives in all institutional areas. The second implication of our findings is related to HEIs' future commitments to address the target of SDG 13 during the present Decade of Actions. Results also lead us to reflect on the role of Mexican HEIs as agents of change, beyond offering good instruction on climate science as an agent of socialization to encourage positive mitigation and adaptation behaviors among the general population.Social implications>The social implication behind the environmental values of younger people found in this study is that a deeper understanding of these millennials' beliefs and concerns toward global warming will help Mexican policymakers implement policies in this regard and hopefully will be endorsed by a significant proportion of the Mexican population.Originality/value>The originality of this study is the application of the Global Warming's Six Americas survey questionnaire in higher education settings. Therefore, the knowledge generated determines the quality of the article. As findings in this study revealed, there is apparently little disagreement among the Mexican engineering higher education students about the belief of the existence of global warming and this phenomenon is being caused mainly by human-related activities. Nevertheless, a minority of students still believe that global warming is caused naturally or not occurring. However, it is not possible to claim victory, as these achievements should not be considered, in any way, a guarantee that students will carry out behaviors in their daily lives that impact a reduction in global warming. Nevertheless, the study provides insights to allow university authorities to ensure that the current beliefs and concerns will not fade in the post-pandemic times. Thus, the COVID-19 pandemic should be taken a pivotal era toward the goal of increasing the global average temperature to well below 2°C above pre-industrial levels and pursuing efforts to limit the temperature increase to 1.5°C above pre-industrial levels.
ABSTRACT
We present the CarbonTracker Europe High-Resolution (CTE-HR) system that estimates carbon dioxide (CO2) exchange over Europe at high resolution (0.1 × 0.2∘) and in near real time (about 2 months' latency). It includes a dynamic anthropogenic emission model, which uses easily available statistics on economic activity, energy use, and weather to generate anthropogenic emissions with dynamic time profiles at high spatial and temporal resolution (0.1×0.2∘, hourly). Hourly net ecosystem productivity (NEP) calculated by the Simple Biosphere model Version 4 (SiB4) is driven by meteorology from the European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis 5th Generation (ERA5) dataset. This NEP is downscaled to 0.1×0.2∘ using the high-resolution Coordination of Information on the Environment (CORINE) land-cover map and combined with the Global Fire Assimilation System (GFAS) fire emissions to create terrestrial carbon fluxes. Ocean CO2 fluxes are included in our product, based on Jena CarboScope ocean CO2 fluxes, which are downscaled using wind speed and temperature. Jointly, these flux estimates enable modeling of atmospheric CO2 mole fractions over Europe.We assess the skill of the CTE-HR CO2 fluxes (a) to reproduce observed anomalies in biospheric fluxes and atmospheric CO2 mole fractions during the 2018 European drought, (b) to capture the reduction of anthropogenic emissions due to COVID-19 lockdowns, (c) to match mole fraction observations at Integrated Carbon Observation System (ICOS) sites across Europe after atmospheric transport with the Transport Model, version 5 (TM5) and the Stochastic Time-Inverted Lagrangian Transport (STILT), driven by ECMWF-IFS, and (d) to capture the magnitude and variability of measured CO2 fluxes in the city center of Amsterdam (the Netherlands).We show that CTE-HR fluxes reproduce large-scale flux anomalies reported in previous studies for both biospheric fluxes (drought of 2018) and anthropogenic emissions (COVID-19 pandemic in 2020). After applying transport of emitted CO2, the CTE-HR fluxes have lower median root mean square errors (RMSEs) relative to mole fraction observations than fluxes from a non-informed flux estimate, in which biosphere fluxes are scaled to match the global growth rate of CO2 (poor person's inversion). RMSEs are close to those of the reanalysis with the CTE data assimilation system. This is encouraging given that CTE-HR fluxes did not profit from the weekly assimilation of CO2 observations as in CTE.We furthermore compare CO2 concentration observations at the Dutch Lutjewad coastal tower with high-resolution STILT transport to show that the high-resolution fluxes manifest variability due to different emission sectors in summer and winter. Interestingly, in periods where synoptic-scale transport variability dominates CO2 concentration variations, the CTE-HR fluxes perform similarly to low-resolution fluxes (5–10× coarsened). The remaining 10 % of the simulated CO2 mole fraction differs by >2 ppm between the low-resolution and high-resolution flux representation and is clearly associated with coherent structures ("plumes”) originating from emission hotspots such as power plants. We therefore note that the added resolution of our product will matter most for very specific locations and times when used for atmospheric CO2 modeling. Finally, in a densely populated region like the Amsterdam city center, our modeled fluxes underestimate the magnitude of measured eddy covariance fluxes but capture their substantial diurnal variations in summertime and wintertime well.We conclude that our product is a promising tool for modeling the European carbon budget at a high resolution in near real time. The fluxes are freely available from the ICOS Carbon Portal (CC-BY-4.0) to be used for near-real-time monitoring and modeling, for example, as an a priori flux product in a CO2 data assimilation system. The data are available at 10.18160/20Z1-AYJ2 .
ABSTRACT
As many business activities-especially those associated with the energy-intensive industries-continue to be major sources of greenhouse gas emissions, and hence significantly contributing to global warming, there is a perceived need to identify ways to make business activities eventually carbon neutral. This paper explores the implications of a changing climate for the global tourism business and its intertwining global aviation industry that operates in a self-regulatory environment. Adopting a bibliometric analysis of the literature in the domain of global tourism and climate change (772 articles), the paper reveals the underlying sustainability issues that entail unsustainable energy consumption. The aviation industry as a significant source of carbon emission within the sector is then examined by analyzing the top 20 largest commercial airlines in the world with respect to its ongoing mitigating measures in meeting the Paris Agreement targets. While self-regulatory initiatives are taken to adopt Sustainable Aviation Fuels (SAF) as alternative fuel production and consumption for drastically reducing carbon emission, voluntary alignment and commitment to long-term targets remain inconsistent. A concerted strategic approach to building up complementary sustainable infrastructures among the global network of airports based in various international tourist destination cities to enable a measurable reduction in carbon emission is necessary to achieve a transformational adaptation of a business sector that is of essence to the recovery of the global economy while attempting to tackle climate change in a post-COVID-19 era.