The COVID-19 pandemic is impacting human activities, and in turn energy use and carbon dioxide (CO2) emissions. Here we present daily estimates of country-level CO2 emissions for different sectors based on near-real-time activity data. The key result is
(–11 to –25% for ±1σ) by early April 2020 compared with the mean 2019 levels, just under half from changes in surface transport. At their peak, emissions in individual countries decreased by –26% on average. The impact on 2020 annual emissions depends on the duration of the ...
This study presents the results of a detailed life cycle analysis of greenhouse gas (GHG) emissions associated with carbon dioxide-enhanced oil recovery (CO2-EOR) where the CO2 is sourced from a coal-fired power plant. This work builds upon previous investigations and integrates new information to...
As an important trend in the automotive industry, electrification of propulsion systems has potential to significantly reduce greenhouse-gas emissions of the transportation sector. Whereas electric vehicles do not produce exhaust emissions during driving, the impact of electricity provision for charging batte...
Since the 21st century, global carbon emissions have accelerated sharply, with global CO2emissions increasing by 40% from 2000–2019. In addition, global CO2emissions rebounded in 2021, reaching their highest-ever annual level of 36.3 Gt, according to the International Energy Agency (IEA) [1]....
The latter two are combined in the Global Warming Potential (GWP) index, which measures the total energy absorbed by a gas over a given time period (usually a century) relative to the emissions of 1 tonne of CO2 [31]. Figure 3. Relative contributions of gases to the greenhouse effect. ...
In the RTM model, initial mineralogical and aqueous composition was assigned for each of the 15 defined rock types. The solid phases were defined on the basis of core samples laboratory analysis (XRPD, XRF and SEM-EDS) [39] and recomputed to redistribute the average mineral percentage as a ...
The relation between CO2 emissions and atmospheric CO2 concentration has traditionally been treated with more or less complex models with several boxes. Our approach is motivated by the question of how much CO2 must necessarily be absorbed by sinks. This
Reducing energy and associated greenhouse gas emissions in buildings is one of the key aspects of climate change on a global level. To put the building sector on a low carbon development path, policies and adequate financing play a crucial role in each region. In the global South, policies an...
Addressing escalating energy demands and greenhouse gas emissions in the oil and gas industry has driven extensive efforts in carbon capture and utilization (CCU), focusing on power plants and industrial facilities. However, utilizing CO2 as a raw material to produce valuable chemicals, materials, and...