Sentences with phrase «atmospheric dust concentrations»

According to the study's authors, quantifying the amount and sources of atmospheric dust concentrations is also important to improve future climate change predictions.

Not exact matches

This was a relatively stable climate (for several thousand years, 20,000 years ago), and a period where we have reasonable estimates of the radiative forcing (albedo changes from ice sheets and vegetation changes, greenhouse gas concentrations (derived from ice cores) and an increase in the atmospheric dust load) and temperature changes.

As far as Hansen's Scenario A, B, C forecasts back in the 80s, he could have just dusted off the model in 2005, plugged in the greenhouse emissions, volcanic eruptions, atmospheric component concentrations, etc..

Think on atmospheric chemistry, individual rates for the reactions of nitrogen oxides and oxy - radicals can dependent on concentration, atmospheric pressure, temperature, light flux, liquid water levels, silicate surface (from dust) and «unknown unknowns *».

Most of the GMT drop has been attributed to radiative forcing decreases from increased albedo due to equatorward ice extension and from decreased greenhouse gas concentrations; vegetation and atmospheric dust are thought to play secondary roles (20, 21).

As shown by our simulations with a climate − carbon cycle model, such a relationship between dust and climate implies that dust - induced cooling is responsible for the final step from intermediate to extreme glacial cooling and drawdown of atmospheric CO2 concentrations.

Among illustrative irreversible impacts that should be expected if atmospheric carbon dioxide concentrations increase from current levels near 385 parts per million by volume (ppmv) to a peak of 450 — 600 ppmv over the coming century are irreversible dry - season rainfall reductions in several regions comparable to those of the «dust bowl» era and inexorable sea level rise.

Other sources of lag could be the time required for the ocean to mix vertically, for sea - ice to melt, for oceanic biological productivity to change, and / or for the concentrations of atmospheric dust to change («Timing of Atmospheric CO2 and Antarctic Temperature Changes Across Termination III», Science Magazine # 299).

Its current dust output is essentially transport - limited, but with expected changes in future atmospheric circulation in response to increasing greenhouse gas concentrations, changes to deflation in the Bodélé may impose critical changes on the behavior of the Earth system in response to the role that dust plays in the biosphere and the sheer quantity emitted from this key region.