Although the proportion of CH4 in the atmosphere is very low
compared to CO2, the relative contribution of CH4 to
global warming is high due to the high radiative forcing contributed by this
gas. The global atmospheric concentration of methane reached 1774 ppb in 2005 compared
to 1732 ppb in the early 1990s and only 715 ppb in the pre-industrial era
(figure). This increase in atmospheric concentration of CH4 is
responsible for radiative forcing of +0.48 ± 0.05 W m–2
which is second only to that contributed by CO2 due to CH4 having approximately 25 times higher global warming potential
(GWP) compared to CO2.
Therefore, reduction in CH4 emission is more effective and
probably an easier strategy than reducing CO2 emission.
Figure: Trend in the increase in
atmospheric concentration of CH4 over
the last 10,000 years and since 1750 (inset) with corresponding radiative
forcing. Source: IPPC (2007)
P.S. References available on request.
For anyone tracking financial and policy developments, EOWeekly offers a clear, analytical perspective. The platform combines market updates, economic analysis, and global insights, helping readers stay informed while understanding broader implications.
ReplyDeleteWith a focus on empowering learners, WeeklyTutors delivers clear, practical content on study strategies and personal growth. Its articles inspire readers to take charge of their learning journey and pursue academic success with confidence.
ReplyDeleteA trusted platform for digital media coverage, HitWeekly delivers thoughtful updates on entertainment trends and audience behavior. Its content is both engaging and informative, providing readers with a comprehensive view of the industry.
ReplyDelete