Sentences with phrase «global atmospheric concentrations»
Global atmospheric concentrations of methane are rising — along with scientific scrutiny of this potent greenhouse gas.
earthobservatory.nasa.gov
Increase in global atmospheric concentrations of mercury inferred from measurements over the Atlantic Ocean
Under the scenarios explored in this report, stabilizing global atmospheric concentrations below 440 ppm required a median increase in renewable energy use of 248 exajoules (EJ) per year by 2050, and potentially as much as 428 EJ.
It reiterated the principle of «common but differentiated responsibilities» — which notes the historical responsibility of industrialized («Annex I») countries for virtually all emissions leading to the increase in the global atmospheric concentration of greenhouse gasses.
Why are the global atmospheric concentrations of methane leveling off?
SAN FRANCISCO — NASA revealed the first - ever images of the global atmospheric concentration of carbon dioxide, the key long - lived global warming gas.
«Global atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values determined from ice cores spanning many thousands of years.»
Dissolved GHG flux (Fd) was calculated as: where Csur is the gas concentration in surface water, Ceq is the gas concentration when in equilibrium with the atmosphere at ambient temperature (global atmospheric concentrations were used), and k is the gas exchange velocity calculated as: where Sc is the Schmidt number calculated from empirical third - order polynomial fit to water temperature and corrected at 20 °C.
To date, much international discussion at the interface of science and politics has taken as a rule of thumb that — as a first step — global atmospheric concentrations of carbon dioxide should not exceed approximately twice the concentrations which existed before the modern industrial era.