preview

Decision Making On Black Carbon Mitigation

Better Essays

Decision-Making on Black Carbon Mitigation
Introduction
There have been myriad of findings over the past couple of years suggesting that climate change may be happening far faster than we originally anticipated. Climate change has the potential to trigger abrupt transitions such as the release of carbon from thawing permafrost, ocean acidification, sea level rise, and biodiversity loss. The world has warmed by about 1.5°F, and by 2100 it is projected to rise another 2 to 11.5°F (Karl et al., 2009). Scientists conclude that greenhouse gases (GHG) from anthropogenic sources are the most significant driver of observed climate change (IPCC 2013). GHG have the property of absorbing the infrared radiation given off by the Earth and re-emitting …show more content…

BC has a short atmospheric residence time of days to weeks, while long‐lived GHGs can persist in the atmosphere for centuries. Therefore, reductions in GHG emissions will take longer to influence atmospheric concentrations and will have less impact on climate on a short timescale, whereas reductions in current BC emissions are immediate (Bice et al., 2009). Apart from that, some scientists (Shindell & Faluvegi 2009, Ramanathan & Feng 2009, Quinn et al. 2008, Jacobson 2010) attribute up to 50% of arctic ice melting to BC emissions, therefore its emissions reductions can substantially decrease the rate at which arctic ice is melting. Thus, initiatives focused on lowering BC will help offset the impact of decades of GHG emissions and give efforts to reduce carbon dioxide (CO2) emissions time to get off the ground. It’s worth mentioning that BC also has adverse effect on human health, such as premature mortality, cardiovascular and respiratory diseases, and development of chronic respiratory disease, so targeting BC emissions will be beneficial from the public health standpoint (EPA 2011).
Bringing black carbon into climate strategy offers a complementary route to act on climate change, but the scientific understanding of black carbon climate effects isn’t fully complete to support this proposition. On the one hand, there’s a group of scientists who conclude that BC is one of the most important human emission in terms of its climate forcing in current atmosphere, as it

Get Access