Increase In Global Average Temperature Research Articles

Climate change impacts on reference evapotranspiration in South Korea over the recent 100 years

The damage owing to climate change is increasing worldwide. In South Korea, the increase in temperature has exceeded the average global temperature increase. These temperature changes have increased the frequency and damage of droughts. To reduce drought damage, the importance of efficient water management policies and evapotranspiration (an index used for water management policies) is increasing. Generally, the potential evapotranspiration (\({ET}_{0}\)) is estimated by using the FAO-56 Penman–Monteith (PM) equation on meteorological datasets. In this study, long-term meteorological data with a maximum of 100 years were collected from 12 sites to estimate evapotranspiration. The objectives of this study were to (1) estimate the evapotranspiration based on the PM equation, (2) analyze the trends in the temperature and evapotranspiration, and (3) evaluate the relationship between the temperature and evapotranspiration through a correlational analysis. The results improve our understanding of climate change and provide a valuable reference for regional water resource management. It is found that there are generally increasing trends in spring, summer, and autumn, and generally decreasing trends in winter. The results from a seasonal Mann–Kendall test between the temperature and \({ET}_{0}\) show that the maximum temperature exhibits a distinct increase in spring and winter in certain areas. We determined the strengths of the relationships between temperature metrics and \({ET}_{0}\) using Pearson’s correlation coefficient, and the results show that the maximum temperature metric has the strongest relationship.

Portions in portfolios: Understanding public preferences for electricity production using compositional survey data in the United States

Alarming increases in average global temperatures caused by greenhouse gas emissions from the burning of fossil fuels have motivated efforts to transition energy production to clean energy – especially renewable energy sources like wind and solar. While nuclear energy has the potential to provide significant amounts of zero‑carbon, baseload energy it does not have the levels of public support that wind and solar energy do. Most research on energy production preferences examines public support for energy sources in isolation. This study improves upon the current state of this research by examining public preferences for energy sources in electricity production as a mix of the most common sources for the energy grid. Using data from a representative survey of over 2000 American adults, we explore variations in the preferred mix of energy sources for electricity production among the U.S. public. By utilizing compositional analytical techniques, we model trade-offs in electricity production for energy source preferences instead of isolated preferences for individual sources. As evidence of growing support for clean energy transitions, we find that fossil fuel energy makes up a relatively small proportion of the preferred energy mix for electricity production across all ideological groups, especially relative to its current production. We also find that beliefs and knowledge about climate change are strongly associated with a higher prevalence of renewable sources in the preferred electricity mix. Overall, our findings on electricity composition preferences suggest that respondents would like to see almost 30 % of electricity in the U.S. originate from solar energy over the next twenty years.

축열식 연소산화장치 구현을 통한 VOCs 산화처리 및 폐열 회수 기술 개발

The reduction of greenhouse gases and Carbon Neutral (Carbon Zero) due to global warming is agreed by all countries around the world. The increase in global average temperature to climate change is kept within 2°C compared to before industrialization and achieved 1.5°C in the long run. Korea has set a 37% reduction target (315 million tons) compared to the 2030 emission forecast (851 million tons) and is promoting various air pollution reduction technologies and R&D policies to reduce greenhouse gases and minimize the impact on climate change.
 Currently, there are VOCs that are directly emitted into the atmosphere or that cause greenhouse gases as simple power generation and heat sources. Aromatic hydrocarbons such as benzene are strong carcinogens that cause leukaemia, central nervous disorder, chromosomal abnormalities, and hydrochloride can produce photochemical oxides by destruction of the ozone layer, global warming, and chain reactions of volatile organic compounds, causing eye irritation, reduced visibility, and damage to plants and crops.
 VOCs reduction technology should reduce the amount of harmful substances in advance by controlling operating conditions and working conditions. Technologies that can effectively process VOCs throughput of 95% or more are heat storage combustion systems and heat storage catalyst combustion systems.
 This paper proposes a heat delivery system specification design and emission concentration measurement technology for high-efficiency waste heat recovery of 100 CMM RTO (Regenerative Thermal Oxidation) device to reduce air pollution in VOCs generating sites. For the application of the waste heat recovery system, a 100CMM heat storage combustion oxidation system (RTO) is designed, and the performance is evaluated by measuring the concentration of VOC (Volatile Organic Compound) emissions according to production process operating conditions.

MSWIBA Formation and Geopolymerisation to Meet the United Nations Sustainable Development Goals (SDGs) and Climate Mitigation

Sustainable Development Goals (SDGs) constitute an action plan for the environment and people. One of the main goals is to limit the increase in global average temperature to 2 °C and aim for a stop at 1.5 °C. The goals of the circular economy (CE) are in line with the SDGs. In the waste management chain, the last CE element is a recovery in the municipal solid waste incineration plant (MSWIP). However, during recovery, municipal solid waste bottom ash (MSWIBA) is created (in about 30% of the bunch). The development of MSWIBA in the construction industry is a possibility of closing the cycle. This article shows the MSWIBA formation process, alkali pre-treatment of MSWIBA, and its geopolymerisation. Studies have determined the mechanical properties of geopolymer with MSWIBA and leachability from crushed and from monolith geopolymer. Alkali pre-treatment improves MSWIBA mechanical properties and upgrades immobilisation. Moreover, geopolymerisation is a better solution than concreting, because of the lack or low consumption of high-emission and energy-intensive cement. A SWOT analysis was carried out for the proposed solution.

Use the remaining carbon budget wisely for health equity and climate justice

According to the Intergovernmental Panel on Climate Change (IPCC), the estimated remaining carbon budget from 2020 onwards to limit the global average temperature increase to 1·5°C above pre-industrial levels with a probability of 67% is about 400 Gt carbon dioxide or 1150 Gt carbon dioxide for limiting this global heating to 2°C.1 The IPCC estimates depend on various factors, including the rate at which other greenhouse gases, including methane, decline. If carbon dioxide emissions remain at a constant level, the carbon budget would be used up in about 7 years and 25 years, respectively.

The Global Carbon Footprint and How New Carbon Mineralization Technologies Can Be Used to Reduce CO2 Emissions

Carbon dioxide is a byproduct of our industrial society. It is released into the atmosphere, which has an adverse effect on the environment. Carbon dioxide management is necessary to limit the global average temperature increase to 1.5 degrees Celsius and mitigate the effects of climate change, as outlined in the Paris Agreement. To accomplish this objective realistically, the emissions gap must be closed by 2030. Additionally, 10–20 Gt of CO2 per year must be removed from the atmosphere within the next century, necessitating large-scale carbon management strategies. The present procedures and technologies for CO2 carbonation, including direct and indirect carbonation and certain industrial instances, have been explored in length. This paper highlights novel technologies to capture CO2, convert it to other valuable products, and permanently remove it from the atmosphere. Additionally, the constraints and difficulties associated with carbon mineralization have been discussed. These techniques may permanently remove the CO2 emitted due to industrial society, which has an unfavorable influence on the environment, from the atmosphere. These technologies create solutions for both climate change and economic development.

Notes from the Editors, June 2022

buy this issue
 Time is running out for the world to carry out the social transformations necessary to avert irreversible climate catastrophe, keeping the increase in global average temperatures below 1.5°C (or below 2°C). The most optimistic scenario currently provided by the UN Intergovernmental Panel on Climate Change (IPCC) describes a pathway in which the increase in temperature will not rise to 1.5°C until 2040, peaking at 1.6°C, and then falling back to 1.4°C by the end of this century. But to achieve this will require revolutionary scale transformational change in global social relations affecting the human relation to the climate and the planetary environment as a whole.

Climate change and its impact on biodiversity and human welfare

Climate change refers to the long-term changes in temperature and weather due to human activities. Increase in average global temperature and extreme and unpredictable weather are the most common manifestations of climate change. In recent years, it has acquired the importance of global emergency and affecting not only the wellbeing of humans but also the sustainability of other lifeforms. Enormous increase in the emission of greenhouse gases (CO2, methane and nitrous oxide) in recent decades largely due to burning of coal and fossil fuels, and deforestation are the main drivers of climate change. Marked increase in the frequency and intensity of natural disasters, rise in sea level, decrease in crop productivity and loss of biodiversity are the main consequences of climate change. Obvious mitigation measures include significant reduction in the emission of greenhouse gases and increase in the forest cover of the landmass. Conference of Parties (COP 21), held in Paris in 2015 adapted, as a legally binding treaty, to limit global warming to well below 2 °C, preferably to 1.5 °C by 2100, compared to pre-industrial levels. However, under the present emission scenario, the world is heading for a 3–4 °C warming by the end of the century. This was discussed further in COP 26 held in Glasgow in November 2021; many countries pledged to reach net zero carbon emission by 2050 and to end deforestation, essential requirements to keep 1.5 °C target. However, even with implementation of these pledges, the rise is expected to be around 2.4 °C. Additional measures are urgently needed to realize the goal of limiting temperature rise to 1.5 °C and to sustain biodiversity and human welfare.

Critical Environmental Limits for Young, Healthy Adults (PSU HEAT)

The average temperature of the Earth has been steadily increasing for decades and is expected to continue increasing throughout the 21st century. Along with the increase in average global temperatures, the frequency, duration, and severity of heat waves have increased. Thus, there is a critical need for research targeted at understanding the specific environmental conditions associated with increased risk of heat‐ and humidity‐related morbidity and mortality.PurposeTo establish critical environmental limits for healthy young adults at two metabolic rates that reflect activities of daily living and light activity. We hypothesized that critical environmental limits would be shifted toward lower combinations of temperature and humidity at higher compared to lower rates of metabolic heat production.MethodsTwenty‐five (12M/13F; 24 ± 4 yrs) subjects were exposed to progressive heat stress in an environmental chamber at two rates of metabolic heat production chosen to represent minimal activity (MinAct) or light ambulation (LightAmb). Progressive heat stress comprised either (1) constant dry‐bulb temperature (Tdb; 36, 38, or 40 °C) and increasing ambient water vapor pressure (Pa; Pcrit trials), or (2) constant Pa (12, 16, or 20 mmHg) and increasing Tdb (Tcrit trials). Chamber Tdb and Pa, and subject gastrointestinal temperature (Tgi), were continuously monitored throughout each trial. After a 30‐min equilibration period, progressive heat stress superseded until subject heat balance could no longer be maintained and a clear rise in Tgi was observed. Each subject was tested during MinAct and LightAmb in 2 or 3 randomized environmental conditions, for a total of 4–6 trials per participant.ResultsBy design, oxygen consumption (V̇O2: 0.46 ± 0.10 vs. 0.80 ± 0.16 L/min; 1.8 ± 0.3 vs. 3.2 ± 0.3 METs), metabolic heat production (82.9 ± 12.5 vs. 133.3 ± 14.8), and sweat rate (142.8 ± 80.2 vs. 230.8 ± 84.9) were lower for MinAct compared to LightAmb (all p < 0.0001). There were no differences in these variables (p ≥ 0.05) among environmental conditions for either MinAct or LightAmb intensities. Higher metabolic heat production (p < 0.001) during LightAmb compared to MinAct trials resulted in significantly lower critical environmental limits across all Pcrit and Tcrit conditions (all p < 0.001).ConclusionsThese data are the first to define critical environmental limits for the maintenance of heat balance in healthy young adults during minimal to light physical activity reflecting activities of daily living and light household tasks. By establishing critical environmental limits in a young, healthy population, the findings of this study will be used as a benchmark for future studies in aged and other vulnerable populations, and can be used to develop guidelines, policy decisions, and evidence‐based alert communications to minimize adverse impacts of extreme heat events.

Soil Greenhouse Gas Emissions in Different Pastures Implemented as a Management Strategy for Climate Change

The increase in global average temperature has significant implications for food security and agriculture production. Grass species adapted to new climate scenarios are essential for the success of livestock production. The aim of this study was to evaluate different forage species, providing animal feed during critical dry periods as an adaptation strategy for livestock grazing systems, and its implications for greenhouse gas (GHG) emissions. The field experiment was conducted during September 2015 to September 2017, with four treatments (n = 5, completely randomized block design), including two perennial forages, Bromus valdivianus (Bromus), Lotus corniculatus (Lotus), alone and in a mixture pasture (Br/L). As a control treatment, the forage species commonly seeded by the farmer was used (hybrid ryegrasses + Oat, Control). One-half of the plots was used for nitrous oxide (N2O) and methane (CH4) measurements, and the remaining half for destructive soil and forage sampling. Gas fluxes were measured using the static chambers technique. Cumulative emissions of N–N2O, C–CH4 and CO2−eq were not affected by treatments, averaging 1.7 kg N–N2O ha−1, 3.2 kg C–CH4 ha−1 and 635.5 kg CO2 ha−1, respectively (p > 0.05). However, emission intensity tended to be lower for Br/L compared with other treatments (p = 0.06) during the second year, while pasture yield was greater for Br/L (p < 0.05). The control showed a greater average pasture yield (first and second years) compared to other treatments, with the highest metabolizable energy and the lowest crude protein content. Our results suggest that a mix pasture Br/L as a management strategy would promote farm adaptation, given that it favors pasture yield at critical dry periods during the year. This inclusion also reduces N–N2O emissions from grassland soils as well as favoring C–CH4 capture. Our study determined that N–N2O and C–CH4 emissions were regulated by soil variables, mainly soil moisture and soil temperature. Extension and knowledge transfer should be provided to farmers to account for potential adoption barriers, such as low short-term yield.

Renewable energy product competitiveness: Evidence from the United States, China and India

In order to achieve the goal of limiting the global average temperature increase by 2 °C in the Paris Agreement on climate change, the international community must make unprecedented changes to the current human lifestyle, energy and transportation system. Under such circumstances, the United States, China, India and other developing and developed countries have made remarkable progress in renewable energy production and trade. In order to systematically evaluate the international competitiveness of renewable energy products of the United States, China and India, the current study has built a new multi-dimensional evaluation index to estimate the international competitive edge of renewable energy products exported from these countries, by abandoning the traditional methods for measuring trade competitiveness and adopting the projection pursuit (PP), TOPSIS model and the improved weighting methodology. The results demonstrate that the overall international competitiveness of renewable energy products of the United States is very strong, whereas China and India have seen a rapid growth; and distinct differences exist in the component factors leading to the international competitiveness among the three countries. Based on these findings, this study has put forward corresponding policy implications.

Good practice policies to bridge the emissions gap in key countries

One key aspect of the Paris Agreement is the goal to limit the global average temperature increase to well below 2 °C by the end of the century. To achieve the Paris Agreement goals, countries need to submit, and periodically update, their Nationally Determined Contributions (NDCs). Recent studies show that NDCs and currently implemented national policies are not sufficient to cover the ambition level of the temperature limit agreed upon in the Paris Agreement, meaning that we need to collectively increase climate action to stabilize global warming at levels considered safe. This paper explores the generalization of previously adopted good practice policies (GPPs) to bridge the emissions gap between current policies, NDCs ambitions and a well below 2 °C world, facilitating the creation of a bridge trajectory in key major-emitting countries. These GPPs are implemented in eleven well-established national Integrated Assessment Models (IAMs) for Australia, Brazil, Canada, China, European Union (EU), India, Indonesia, Japan, Russia, South Korea, and the United States, that provide least-cost, low-carbon scenarios up to 2050. Results show that GPPs can play an important role in each region, with energy supply policies appearing as one of the biggest contributors to the reduction of carbon emissions. However, GPPs by themselves are not enough to close the emission gap, and as such more will be needed in these economies to collectively increase climate action to stabilize global warming at levels considered safe.

РОЗВИТОК ЗЕЛЕНОЇ ЕКОНОМІКИ У НАПРЯМКУ ФУНКЦІОНУВАННЯ ВЕНЧУРНИХ СТРУКТУР ДЛЯ РИНКУ ЕЛЕКТРОМОБІЛІВ

The climate crisis, along with the loss of biodiversity, is the biggest challenge the world is facing. The increase in global average temperatures has a significant impact on the climate, so the EU countries strive to preserve biodiversity and ecosystem services, to become a world leader in the conservation and restoration of nature in the next decade. In the environmental document "EU Biodiversity Strategy to 2030: Bringing nature back into our lives" (COM (2020) 380 final), the European Commission appealed to the European Parliament and intergovernmental institutions of the European Union to achieve a number of global goals set by the European Green Deal and the UN Framework Convention on biodiversity protection. In the development of the green economy, Ukraine has obligations regarding biodiversity within the framework of the Association Agreement with the European Union. The need to use environmentally friendly transport in Ukraine is determined by the global trends of transition to electric vehicles and the current ecological situation in the country. According to World Health Organization, Ukraine ranks first in the world in terms of air pollution deaths per 100,000 people. The article researched, analyzed and substantiated the relevance of the development of the "green" economy in Ukraine in the direction of the functioning of venture structures for the electric car market. The main objectives of the biodiversity strategy of the European Union are highlighted. The task and purpose of the "green" economy as an important component of the social, economic and ecological development of the state is presented. The goals of the European Green Course and the European Climate Pact were studied, and the main obligations of Ukraine were analyzed. Features of the functioning of venture structures, such as business incubators and business accelerators, are presented, and their important role in the development of startups is investigated. The role and significance of electric vehicles as environmentally friendly transport is defined. The role of venture capital structures as accelerators of Ukraine's development has been studied.

The long road to bloom in conifers

More than 600 species of conifers (phylum Pinophyta) serve as the backbone of the Earth’s terrestrial plant community and play key roles in global carbon and water cycles. Although coniferous forests account for a large fraction of global wood production, their productivity relies largely on the use of genetically improved seeds. However, acquisition of such seeds requires recurrent selection and testing of genetically superior parent trees, eventually followed by the establishment of a seed orchard to produce the improved seeds. The breeding cycle for obtaining the next generation of genetically improved seeds can be significantly lengthened when a target species has a long juvenile period. Therefore, development of methods for diminishing the juvenile phase is a cost-effective strategy for shortening breeding cycle in conifers. The molecular regulatory programs associated with the reproductive transition and annual reproductive cycle of conifers are modulated by environmental cues and endogenous developmental signals. Mounting evidence indicates that an increase in global average temperature seriously threatens plant productivity, but how conifers respond to the ever-changing natural environment has yet to be fully characterized. With the breakthrough of assembling and annotating the giant genome of conifers, identification of key components in the regulatory cascades that control the vegetative to reproductive transition is imminent. However, comparison of the signaling pathways that control the reproductive transition in conifers and the floral transition in Arabidopsis has revealed many differences. Therefore, a more complete understanding of the underlying regulatory mechanisms that control the conifer reproductive transition is of paramount importance. Here, we review our current understanding of the molecular basis for reproductive regulation, highlight recent discoveries, and review new approaches for molecular research on conifers.

АЕРОЗОЛІ ГЕОІНЖЕНЕРІЇ

The unambiguous indicators of climate change caused by the industrialization of society are becoming increasingly apparent. Urgent short-term transformations in energy and transport systems around the world are needed to significantly reduce carbon emissions. The scale of the transformation, the lack of effective public response, and the inertia of changes in energy infrastructure are prompting other strategies to mitigate some of the effects of global warming. If global warming continues to rise, it could lead to serious risks of large-scale, irreversible failure in the climate system. Projections of such levels of warming are within the XXI century. As efforts to achieve ambitious emission reduction targets have so far failed, options for mitigating climate change or adapting to climate change have recently been seriously considered. Limiting global warming by 2° C above pre-industrial levels in the 21st century. Avoids dangerous human interference in the climate system. If the 2° C mark is exceeded, the effects of climate change can no longer be controlled. Currently, the increase in average global surface temperature is already about 1.0° C above pre-industrial values. It is estimated that 0.5° C is already in the climate system, especially in the oceans, and has not yet affected the planet’s surface air temperature. However, there are currently no signs of any radical containment of global warming. On the contrary, the concentration of carbon dioxide, arguably the most important anthropogenic greenhouse gas in the atmosphere, continues to rise steadily. Given this situation, it is not only the scientific community that is actively discussing artificial interventions in the climate system to limit global warming, which is known as climate geoengineering.

The 1.5°C climate and energy scenarios: impacts on economic growth

Abstract In the context of calls for ‘de-growth’ (reduction in gross domestic product, [GDP]) in developed countries for them to be able to reduce emissions to ‘net zero’ in time for the temperature target in the Paris Agreement to be met, this article explores the various impacts on economic growth in the scenarios of the Intergovernmental Panel on Climate Change (IPCC) that limit the average global temperature increase in 2100 to 1.5°C. It finds that the impacts are generally small and that in no case is ‘degrowth’ required, although the requirements for the rate and nature of technological developments are challenging. The article then reports on a modelling exercise that investigates in more detail the economic dynamics of achieving the 1.5°C target. It finds that, as with the IPCC scenarios, and assuming the feasibility of at-scale deployment of carbon capture and negative emission technologies, economic growth continues throughout this century, with a major contribution coming from the investment required to decarbonise the energy system.

Future Global Convective Environments in CMIP6 Models

AbstractThe response of severe convective storms to a warming climate is poorly understood outside of a few well studied regions. Here, projections from seven global climate models from the CMIP6 archive, for both historical and future scenarios, are used to explore the global response in variables that describe favorability of conditions for the development of severe storms. The variables include convective available potential energy (CAPE), convection inhibition (CIN), 0–6 km vertical wind shear (S06), storm relative helicity (SRH), and covariate indices (i.e., severe weather proxies) that combine them. To better quantify uncertainty, understand variable sensitivity to increasing temperature, and present results independent from a specific scenario, we consider changes in convective variables as a function of global average temperature increase across each ensemble member. Increases to favorable convective environments show an overall frequency increases on the order of 5%–20% per °C of global temperature increase, but are not regionally uniform, with higher latitudes, particularly in the Northern Hemisphere, showing much larger relative changes. The driving mechanism of these changes is a strong increase in CAPE that is not offset by factors that either resist convection (CIN), or modify the likelihood of storm organization (S06, SRH). Severe weather proxies are not the same as severe weather events. Hence, their projected increases will not necessarily translate to severe weather occurrences, but they allow us to quantify how increases in global temperature will affect the occurrence of conditions favorable to severe weather.

Manage the environmental risks of perovskites

Manage the environmental risks of perovskites

CURRENT UNDERSTANDING OF THE MECHANISMS OF HEAT STRESS TOLERANCE IN RICE (Oryza sativa L.)

Various studies reported by scientific communities such as NASA’s Goddard Institute for Space Studies (GISS) indicated an increase in average global temperature by approx. 0.8 °C since 1880. Rice (Oryza sativa L.), a heat sensitive plant cereal crop could be greatly affected by heat stress due to global temperature rise. Thus, it is envisaged that rice productivity could markedly decrease due to a rise in mean atmospheric temperature. Different studies have been reported possible mechanisms of heat stress tolerance in Rice. The present review will therefore discuss the current fundamental understanding of heat tolerant mechanisms involving heat shock proteins, plant hormones, plant growth regulators, osmoprotectants, and the importance of membrane thermal stability in rice.

Climate Model Projections for Canada: A Comparison of CMIP5 and CMIP6

ABSTRACT Recent studies have identified stronger warming in the latest generation of climate model simulations globally, and the same is true for projected changes in Canada. This study examines differences for Canada and six sub-regions between simulations from the latest Sixth Coupled Model Intercomparison Project (CMIP6) and its predecessor CMIP5. Ensembles from both experiments are assessed using a set of derived indices calculated from daily precipitation and temperature, with projections compared at fixed future time intervals and fixed levels of global temperature change. For changes calculated at fixed time intervals most temperature indices display higher projected changes in CMIP6 than CMIP5 for most sub-regions, while greater precipitation changes in CMIP6 occur mainly in extreme precipitation indices. When future projections are calculated at fixed levels of global average temperature increase, the size and spread of differences for future projected changes between CMIP6 and CMIP5 are substantially reduced for most indices. Temperature scaling behaviour, or the regional response to increasing global temperatures, is similar in both ensembles, with annual temperature anomalies for Canada and its sub-regions increasing at between 1.5 and 2.5 times the rate of increase globally, depending on the region. The CMIP6 ensemble projections exhibit modestly stronger scaling behaviour for temperature anomalies in northern Canada, as well as for certain indices of moderate and extreme events. Such temperature scaling differences persist even if anomalously warm CMIP6 global climate models are omitted. Comparing the mean and variance of future projections for Canada in CMIP5 and CMIP6 simulations from the same modelling centre suggests CMIP6 models are significantly warmer in Canada than CMIP5 models at the same level of forcing, with some evidence that internal temperature variability in CMIP6 is reduced compared with CMIP5.