National growth dynamics of wind and solar power compared to the growth required for global climate targets

Nature Energy ◽  
2021 ◽  
Vol 6 (7) ◽  
pp. 742-754
Author(s):  
Aleh Cherp ◽  
Vadim Vinichenko ◽  
Jale Tosun ◽  
Joel A. Gordon ◽  
Jessica Jewell
2021 ◽  
Author(s):  
Thomas Hale ◽  
Andreas Klasen ◽  
Norman Ebner ◽  
Bianca Krämer ◽  
Anastasia Kantzelis

As the world economy rapidly decarbonises to meet global climate goals, the export credit sector must keep pace. Countries representing over two-thirds of global GDP have now set net zero targets, as have hundreds of private financial institutions. Public and private initiatives are now working to develop new standards and methodologies for shifting investment portfolios to decarbonisation pathways based on science. However, export credit agencies (ECAs) are only at the beginning stages of this seismic transformation. On the one hand, the net zero transition creates risks to existing business models and clients for the many ECAs, while on the other, it creates a significant opportunity for ECAs to refocus their support to help countries and trade partners meet their climate targets. ECAs can best take advantage of this transition, and minimise its risks, by setting net zero targets and adopting credible plans to decarbonise their portfolios. Collaboration across the sector can be a powerful tool for advancing this goal.


2021 ◽  
Author(s):  
Jiandong Chen ◽  
Chong Xu ◽  
Ming Gao ◽  
Ding Li

Abstract China’s carbon peak greatly impacts global climate targets. Limited studies have comprehensively analyzed the influence of the COVID-19 pandemic, changing emission network, and recent carbon intensity (CI) reduction on the carbon peak and the corresponding mitigation implications. Using a unique dataset at different levels, we project China’s CO2 emission by 2035 and analyze the time, volume, driver patterns, complex emission network, and policy implications of China’s carbon peak in the post- pandemic era. We develop an ensemble time-series model with machine learning approaches as the projection benchmark, and show that China’s carbon peak will be achieved by 2021–2026 with > 80% probability. Most Chinese cities and counties have not achieved carbon peaks response to the priority-peak policy and the current implementation of CI reduction should thus be strengthened. While there is a "trade off" between the application of carbon emission reduction technology and economic recovery in the post-pandemic era, a close cooperation of interprovincial CO2 emission is also warranted.


2021 ◽  
Vol 168 (3-4) ◽  
Author(s):  
Adam Schlosser ◽  
Andrei Sokolov ◽  
Ken Strzepek ◽  
Tim Thomas ◽  
Xiang Gao ◽  
...  

AbstractWe present results from large ensembles of projected twenty-first century changes in seasonal precipitation and near-surface air temperature for the nation of South Africa. These ensembles are a result of combining Monte Carlo projections from a human-Earth system model of intermediate complexity with pattern-scaled responses from climate models of the Coupled Model Intercomparison Project Phase 5 (CMIP5). These future ensemble scenarios consider a range of global actions to abate emissions through the twenty-first century. We evaluate distributions of surface-air temperature and precipitation change over three sub-national regions: western, central, and eastern South Africa. In all regions, we find that without any emissions or climate targets in place, there is a greater than 50% likelihood that mid-century temperatures will increase threefold over the current climate’s two-standard deviation range of variability. However, scenarios that consider more aggressive climate targets all but eliminate the risk of these salient temperature increases. A preponderance of risk toward decreased precipitation (3 to 4 times higher than increased) exists for western and central South Africa. Strong climate targets abate evolving regional hydroclimatic risks. Under a target to limit global climate warming to 1.5 °C by 2100, the risk of precipitation changes within South Africa toward the end of this century (2065–2074) is commensurate to the risk during the 2030s without any global climate target. Thus, these regional hydroclimate risks over South Africa could be delayed by 30 years and, in doing so, provide invaluable lead-time for national efforts to prepare, fortify, and/or adapt.


2021 ◽  
Vol 9s10 ◽  
pp. 21-42
Author(s):  
Abrar Chaudbury ◽  
Saher Hasnain

Climate change poses unprecedented and complex challenges to global food systems. Critical vulnerabilities, continuing inequalities, and unsustainability have demonstrated that food systems need significant intervention in order to deliver safe, just, and healthy food for all, against the backdrop of a changing climate. Innovative interventions and effective financing are needed across the food system to achieve these grand ambitions. While there is recognition of a systems approach in the face of complex issues such as climate change, interventions and financing mechanisms have historically focused narrowly on production or specific sectors within food and related systems. Given the diverse array of stresses and shocks, this approach will not achieve the desired paradigm shifts necessary to secure global food systems and meet the Paris Agreement climate targets. Through a comprehensive review of projects funded through the Green Climate Fund (GCF), this paper shows that paradigm shifting interventions can benefit from a food systems perspective by moving beyond specific sectors and activities and delivering outcomes across the socio-economic and environmental spheres. Climate change and food system challenges are complex and necessitate system approaches, and financing instruments need to be designed and structured with systemic complexity in mind.


Horticulturae ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 240
Author(s):  
Stefano Marino

Environmental conditions and nutritional stress may greatly affect crop performance. Abiotic stresses such as temperature (cold, heat), water (drought, flooding), irradiance, salinity, nutrients, and heavy metals can strongly affect plant growth dynamics and the yield and quality of horticultural products. Such effects have become of greater importance during the course of global climate change. Different strategies and techniques can be used to detect, investigate, and mitigate the effects of environmental and nutritional stress. Horticultural crop management is moving towards digitized, precision management through wireless remote-control solutions, but data analysis, although a traditional approach, remains the basis of stress detection and crop management. This Special Issue summarizes the recent progress in agronomic management strategies to detect and reduce environmental and nutritional stress effects on the yield and quality of horticultural crops.


2019 ◽  
Vol 11 (15) ◽  
pp. 4013 ◽  
Author(s):  
Sahu ◽  
Saizen

The Paris Agreement is set to come into effect from the year 2020. With this, the issue of emission sharing responsibility has gained momentum. This paper discusses the future emission allowances of various countries based on different sharing principles. Twelve countries from six continents were chosen for observation based on attributes such as past emissions, extent of development, and population. The aim was to find the implication of different sharing principles in future emission quota of a diverse range of countries. Four different budgeting periods were employed for increased certainty. Future cumulative and per capita emission allowances were estimated. The results prove that longer budgeting periods are more advantageous for developed countries while shorter budgeting periods favor developing countries more. The study brings forth some new developments in emission distribution research, primarily concerned with the low emitting countries. Overall, the study contributes to the field of emission sharing science to meet global climate targets.


2019 ◽  
Vol 10 (03) ◽  
pp. 1950009 ◽  
Author(s):  
ARUN SINGH ◽  
NIVEN WINCHESTER ◽  
VALERIE J. KARPLUS

We employ a numerical economy-wide model of India with energy sector detail to evaluate the impact of achieving India’s commitments to the Paris Climate Agreement. We simulate targets for reducing CO2 emissions intensity of GDP via an economy-wide CO2 price and for increasing non-fossil electricity capacity via a Renewable Portfolio Standard. We find that compared with the no policy scenario in 2030, the average cost per unit of emissions reduced is lowest under a CO2 pricing regime. A pure RPS costs more than 10 times the cost of a CO2 pricing regime. Projected electricity demand in 2030 decreases by 8% under the CO2 price, while introducing an RPS further suppresses electricity demand. Importantly, a reduction in the costs of wind and solar power induced by favorable policies may result in cost convergence across instruments, paving the way for more aggressive decarbonization policies in the future.


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