scholarly journals Mitigation efforts will not fully alleviate the increase in water scarcity occurrence probability in wheat-producing areas

2019 ◽  
Vol 5 (9) ◽  
pp. eaau2406 ◽  
Author(s):  
Miroslav Trnka ◽  
Song Feng ◽  
Mikhail A. Semenov ◽  
Jørgen E. Olesen ◽  
Kurt Christian Kersebaum ◽  
...  

Global warming is expected to increase the frequency and intensity of severe water scarcity (SWS) events, which negatively affect rain-fed crops such as wheat, a key source of calories and protein for humans. Here, we develop a method to simultaneously quantify SWS over the world’s entire wheat-growing area and calculate the probabilities of multiple/sequential SWS events for baseline and future climates. Our projections show that, without climate change mitigation (representative concentration pathway 8.5), up to 60% of the current wheat-growing area will face simultaneous SWS events by the end of this century, compared to 15% today. Climate change stabilization in line with the Paris Agreement would substantially reduce the negative effects, but they would still double between 2041 and 2070 compared to current conditions. Future assessments of production shocks in food security should explicitly include the risk of severe, prolonged, and near-simultaneous droughts across key world wheat-producing areas.

Author(s):  
Hamid El-Bilali

Abstract Climate change is expected to have far-reaching impacts on food security. Such impacts are likely to be higher in developing countries. This paper analyses the state of research on the nexus between climate change and food security in Burkina Faso. In particular, it sheds light on whether and how the scholarly literature addresses the impacts of climate change on the four dimensions of food security (i.e. food availability, food access, food utilisation and stability). It also explores the synergies and trade-offs between climate change mitigation/adaptation and food security. A search performed in April 2020 on the Web of Science yielded 243 records and 62 of them, which resulted eligible, were included in the systematic review. The literature shows that climate change will affect all the four dimensions of food security. However, most of the analysed literature addresses its effects on food availability. Indeed, it focuses on impacts on crop yields and climate suitability for crops (e.g. maize, millet, sorghum). Moreover, most of the impacts on the remaining food security dimensions stem from the negative effects on food production and supply (cf. food availability). The review also shows that, on the one hand, climate change mitigation can undermine food security and, on the other hand, agriculture intensification and some adaptation strategies, which aim to enhance food security, might increase emissions from agriculture. The dual climate change-food security relationship calls for integrated policies that address trade-offs and optimise co-benefits between 'climate action' and 'zero hunger' in Burkina Faso.


2021 ◽  
Author(s):  
Ram Lal Verma ◽  
Balram Ambade

Abstract Climate change poses enormous challenges to human civilization in food security, water security, and health security. Anthropogenic emissions of Greenhouse Gases (GHGs) are made responsible for climate change. The climate change mitigation agreements and treaties, from the Kyoto Protocol (1997) to the Paris Agreement (2015), are mainly focusing on emission reduction of GHGs. The Copenhagen Accord (2009) set the target of emission reduction of GHGs to the level of 1990, intending to keep the global warming below 2-degree centigrade (°C) above the temperature level of the pre-industrial era. The Paris Agreement (2015) further pursued efforts to limit the temperature increase to 1.5°C by reducing emissions of GHGs to 40 Gigatonne (Gt CO-eq) by 2030. However, assuming the countries will achieve the target of emission reduction of GHGs by 2030, the target of keeping global warming below 1.5°C is unlikely to achieve because the Paris Agreement (2015) has not included emission reduction of black carbon (BC) particles in the intergovernmental negotiation. The BC particles are strong climate warming agents whose climate forcing is more than half of that of carbon dioxide (CO2) – the main GHG. This article argues for the inclusion of BC mitigation measures in the climate change mitigation measures. As BC also causes severe health impacts, BC mitigation will bring multiple co-benefits for health and environment, including a quick fixing of climate change problems in a few weeks, since the residence time of BC in the atmosphere is about a week.


2020 ◽  
Vol 5 (1) ◽  
pp. 47-58
Author(s):  
Didem Gunes Yilmaz ◽  

Paris Agreement of December 2015 was the last official initiative led by the United Nations (UN) as the driver of climate change mitigation. Climate change was hence linked with an increase in the occurrence of natural hazards. A variety of initiatives were consequently adopted under different themes such as sustainable cities, climate-friendly development and low-carbon cities. However, most of the initiatives targeted by global cities with urban areas being the focus in terms of taking action against global warming issues. This is due to the structural and environmental features of cities characterized by being populated, as such, they not only generate a large number of carbon emissions but also happens to be the biggest consumer of natural resources. In turn, they create a microclimate, which contributes to climate change. Masdar City, for example, was designed as the first fully sustainable urban area, which replaced fuel-based energy with the electric-based energy. China, as another example, introduced the Sponge Cities action, a method of urban water management to mitigate against flooding. Consequently, architects and urban planners are urged to conform to the proposals that would mitigate global warming. This paper, as a result, examines some of the models that have been internationally adopted and thereafter provide the recommendations that can be implemented in large urban areas in Turkey, primarily in Istanbul.


Environments ◽  
2017 ◽  
Vol 4 (2) ◽  
pp. 29 ◽  
Author(s):  
Him Shrestha ◽  
Trishna Bhandari ◽  
Bhaskar Karky ◽  
Rajan Kotru

AJIL Unbound ◽  
2018 ◽  
Vol 112 ◽  
pp. 274-278
Author(s):  
Jean Galbraith

President Trump has done the impossible: he has made the international community enthusiastic about U.S. federalism. Even as they express dismay at Trump's plan to abandon the Paris Agreement, foreign leaders and internationalists have praised the efforts of  U.S. states and cities to combat climate change mitigation in accordance with the Agreement's goals. These leaders are responding to what I will call the outer face of foreign affairs federalism—the direct international engagement undertaken by U.S. states and cities. This outer face has gained visibility in recent years, spurred on not only by the exigencies of climate but also by developments in legal practice. Less noticed internationally but of great practical importance is the inner face of foreign affairs federalism—the ways in which U.S. states and cities interact with the federal government. In this contribution, I first describe these two faces of foreign affairs federalism as they relate to climate and then suggest some ways in which foreign leaders and internationalists could expand the outer face and respond to the inner face.


2019 ◽  
Vol 26 (3) ◽  
pp. 1532-1575 ◽  
Author(s):  
Pete Smith ◽  
Katherine Calvin ◽  
Johnson Nkem ◽  
Donovan Campbell ◽  
Francesco Cherubini ◽  
...  

Author(s):  
Nishi Srivastava

Climate change caused due to our careless activities towards our nature, ecosystem, and whole earth system. We are paying and will be paying in future for our irresponsible activities in past and present. Increased concentration of Green House Gases (GHG) has caused severe global warming which will cause melting of glacier and results in sea level rise. To avoid and reduce the intensity and severity of global warming and climate change, its mitigation is essential. In this chapter we have focused on various issues related with climate change and mitigation strategies.


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