204
A. Dasgotra et al.
8.6.4 Aviation and Ships Emissions
As discussed earlier, aviation sector is one of the major emitters of global fossil CO 2 .
In a recent report it was found that aviation-based fossil CO 2 emission is decreased
by 28.95% globally in first four months [14]. Complete confinement in the aviation
sector stops the entire domestic and international flights that decreased the fossil CO 2
emission, among which mostly was due to cancelation of international aviation. This
report also indicated two consecutive decrease in global aviation-based emission, one
in the end of January in mainly Asian countries and second in the middle of March
for rest of the world. In the middle of March the aviation-based emission decreased
sharply that is coincided with the global level travel ban and strict lockdown measure.
The reports also indicated that around 15% decreased in the fossil CO 2 emission for
shipping sector in the first four months of 2020.
8.6.5 Public and Residential Sectors
In public and commercial sectors the fuel used and corresponding fossil CO 2 emission
is one of the major contributors of global annual CO 2 emission. The use of oil and
gas in public and residential and commercial sectors changes among countries and
from year to year. Liu et al. [14] used those data of population-weighted heating
degree by days of 2 m air temperature for 206 countries. They noticed that the global
heating demands decreased by 2.7% in first four months of 2020 compared to 2019.
Figure 8.6 indicated no significant change in the first four months of 2020 due to the
fact that the residential consumption was mostly driven by temperature variability.
8.7 Country Wise Change in CO 2 Emissions
The daily near-real time data comparison between the first quarter of 2019 and
2020 showed that despite the seasonal variation the CO 2 emission in 2020 was
lower (Fig. 8.7). Around 7.8% of fossil CO 2 emission was decreased during the first
quarter of 2020 compared with 2019. Country level decreasing of CO 2 emission was
discussed in the following paragraphs.
8.7.1 USA
In the first quarter of 2020, the fossil CO 2 emission in the USA was comparable with
the same periods in 2019. As COVID-19 related confinement and related restrictions
were implemented partly in USA only at the end of March (Fig. 8.7). The emission
A. Dasgotra et al.
8.6.4 Aviation and Ships Emissions
As discussed earlier, aviation sector is one of the major emitters of global fossil CO 2 .
In a recent report it was found that aviation-based fossil CO 2 emission is decreased
by 28.95% globally in first four months [14]. Complete confinement in the aviation
sector stops the entire domestic and international flights that decreased the fossil CO 2
emission, among which mostly was due to cancelation of international aviation. This
report also indicated two consecutive decrease in global aviation-based emission, one
in the end of January in mainly Asian countries and second in the middle of March
for rest of the world. In the middle of March the aviation-based emission decreased
sharply that is coincided with the global level travel ban and strict lockdown measure.
The reports also indicated that around 15% decreased in the fossil CO 2 emission for
shipping sector in the first four months of 2020.
8.6.5 Public and Residential Sectors
In public and commercial sectors the fuel used and corresponding fossil CO 2 emission
is one of the major contributors of global annual CO 2 emission. The use of oil and
gas in public and residential and commercial sectors changes among countries and
from year to year. Liu et al. [14] used those data of population-weighted heating
degree by days of 2 m air temperature for 206 countries. They noticed that the global
heating demands decreased by 2.7% in first four months of 2020 compared to 2019.
Figure 8.6 indicated no significant change in the first four months of 2020 due to the
fact that the residential consumption was mostly driven by temperature variability.
8.7 Country Wise Change in CO 2 Emissions
The daily near-real time data comparison between the first quarter of 2019 and
2020 showed that despite the seasonal variation the CO 2 emission in 2020 was
lower (Fig. 8.7). Around 7.8% of fossil CO 2 emission was decreased during the first
quarter of 2020 compared with 2019. Country level decreasing of CO 2 emission was
discussed in the following paragraphs.
8.7.1 USA
In the first quarter of 2020, the fossil CO 2 emission in the USA was comparable with
the same periods in 2019. As COVID-19 related confinement and related restrictions
were implemented partly in USA only at the end of March (Fig. 8.7). The emission