Pathways to net-zero emissions from aviation

GHG emissions from international shipping and aviation

International shipping accounts for about 2 percent of annual global CO2 emissions. Aviation annually contributes to approximately 3.5 percent of the total human climate change effects, taking into account that several emissions from planes contribute. The emissions occur outside national control, and need broad international cooperation to be curbed. Voluntary agreements and technical standard...

Impact of perturbations to nitrogen oxide emissions from global aviation

[1] The atmospheric response to perturbations in NOx emissions from global air traffic is investigated by performing a coherent set of sensitivity experiments. The importance of cruise altitude, size of the emission perturbation and geographical distribution of emissions is systematically analyzed using two global chemistry transport models and an off-line radiative transfer model. NOx emission...

Climate Stabilization at 2°C and Net Zero Carbon Emissions

The goal to stabilize global average surface temperature at lower than 2°C above pre-industrial level has been extensively discussed in climate negotiations. A number of publications state that achieving this goal will require net anthropogenic carbon emissions (defined as anthropogenic emissions minus anthropogenic sinks such as carbon capture and sequestration and reforestation) to be reduced...

Optimization of Syngas Production Systems Subject to Almost Net-Zero CO2 Emissions

This work describes two different configurations of syngas production processes using a combination of steam methane reforming (SMR) and dry reforming of methane (DRM). The ideal SMR+DRM process ensures the maximum product yield, the heat-integrated SMR+DRM process fulfills the maximum heat recovery, and the stand-alone SMR+DRM process effectively suppress net CO2 emissions. Through kinetic mod...

Net CO2 Emissions from Global Photovoltaic Development