2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Bin Qu ◽  
Kelly Sue Aho ◽  
Chaoliu Li ◽  
Shichang Kang ◽  
Mika Sillanpää ◽  
...  

Author(s):  
Ahmad Al‐Douri ◽  
Abdulrahman S. Alsuhaibani ◽  
Margaux Moore ◽  
Rasmus Bach Nielsen ◽  
Amro A. El‐Baz ◽  
...  

2021 ◽  
pp. 127865
Author(s):  
Safwan Mohammed ◽  
Abid Rashid Gill ◽  
Karam Alsafadi ◽  
Omar Hijazi ◽  
Krishna Kumar Yadav ◽  
...  

2021 ◽  
Author(s):  
Liang Guo ◽  
Laura Wilcox ◽  
Massimo Bollasina ◽  
Steven Turnock ◽  
Marianne Lund ◽  
...  

<p>The occurrence of severe haze events remains a serious problem in Beijing. Previous studies suggested that the frequency of weather patterns conducive to haze may increase with global warming. The new Shared Socioeconomic Pathways (SSPs) cover a wide range of uncertainties in aerosol and greenhouse gases emissions. Global and Chinese aerosol emissions are projected to decrease in most SSPs, while increases in greenhouse gases and global warming will continue for the rest of the century. The future, therefore, remains unclear.</p><p>We quantified the air pollution over Beijing and associated weather patterns using multiple indices calculated from the SSPs</p><p>We show that the occurrence of weather patterns conducive to the formation of haze significantly increases by the end of the century due to increases in greenhouse gases. Aerosol reductions also cause an increase in their occurrence, but reduce the severity of haze, and overall reducing aerosol emissions will be beneficial.</p>


2009 ◽  
Vol 30 (6) ◽  
pp. 845-849
Author(s):  
E.O. Santos ◽  
C. Silva ◽  
M.A. Santos ◽  
B. Matvienko ◽  
C.H.E.D.A. Rocha ◽  
...  

2012 ◽  
Vol 72 (3 suppl) ◽  
pp. 673-681 ◽  
Author(s):  
VD Pillar ◽  
CG Tornquist ◽  
C Bayer

The southern Brazilian grassland biome contains highly diverse natural ecosystems that have been used for centuries for grazing livestock and that also provide other important environmental services. Here we outline the main factors controlling ecosystem processes, review and discuss the available data on soil carbon stocks and greenhouse gases emissions from soils, and suggest opportunities for mitigation of climatic change. The research on carbon and greenhouse gases emissions in these ecosystems is recent and the results are still fragmented. The available data indicate that the southern Brazilian natural grassland ecosystems under adequate management contain important stocks of organic carbon in the soil, and therefore their conservation is relevant for the mitigation of climate change. Furthermore, these ecosystems show a great and rapid loss of soil organic carbon when converted to crops based on conventional tillage practices. However, in the already converted areas there is potential to mitigate greenhouse gas emissions by using cropping systems based on no soil tillage and cover-crops, and the effect is mainly related to the potential of these crop systems to accumulate soil organic carbon in the soil at rates that surpass the increased soil nitrous oxide emissions. Further modelling with these results associated with geographic information systems could generate regional estimates of carbon balance.


2020 ◽  
Vol 32 (1) ◽  
pp. 154-160
Author(s):  
Roberto Buizza

Climate change is real, and we, humans, are responsible for it. Its impact is already evident, both on the Earth system (global warming, sea-level rise, sea-ice melting, more intense and frequent extreme weather events such as heat waves and fires) and on people (famines, health issues, migrations, political tensions and conflicts). We need immediate and concrete mitigation actions aiming to reduce greenhouse gases emissions, and adaptation actions to be able to cope with the increasing changing climate. We have to reach zero-net greenhouse gases emissions as soon as possible, by reducing emissions by at least 5% a year, starting from now. Otherwise the climate change impact will become more and more severe: it will induce more injustice, and it will have a major impact on people health. We have the resources and the technologies to deal with it: we must have the courage to change and transform and deal with it. Addressing climate change is not impossible: to the contrary, it is a ‘possible mission’.


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