Sentences with phrase «atmospheric emissions inventory»

Not exact matches

Air pollutant emission inventories are essential in measuring the impact of pollution on air quality and the climate, as they are fed into atmospheric and climate models to make projections for the future.

The work included data from a variety of sources, including national emissions inventories kept by the United Nations, global estimates of energy use and direct measurements of atmospheric CO2 concentrations, and involved dozens of authors from institutes around the world.

We find (i) measurements at all scales show that official inventories consistently underestimate actual CH4 [methane] emissions, with the natural gas and oil sectors as important contributors; (ii) many independent experiments suggest that a small number of «super-emitters» could be responsible for a large fraction of leakage; (iii) recent regional atmospheric studies with very high emissions rates are unlikely to be representative of typical natural gas system leakage rates; and (iv) assessments using 100 - year impact indicators show system - wide leakage is unlikely to be large enough to negate climate benefits of coal - to - natural gas substitution.

we use global - scale atmospheric CO2 measurements, CO2 emission inventories and their full range of uncertainties to calculate changes in global CO2 sources and sinks during the past 50 years.

Nevertheless, this first attempt to estimate urban - scale CO2ff from atmospheric radiocarbon measurements shows that CO2ff can be used to verify and improve emission inventories for many poorly known anthropogenic species, separate biospheric CO2, and indicates the potential to constrain CO2ff emissions if transport uncertainties are reduced.

So, while they may have used an inventory which underestimates emissions, for the purposes of the paper they do scale these to match observations pertaining to atmospheric BC burden.

A life cycle inventory (LCI) is an environmental profile that expresses environmental burdens from the perspective of energy consumption, solid waste generation, atmospheric emissions, and waterborne emissions.