Sentences with phrase «different atmospheric gas»

In the thin, dry Martian atmosphere, the sun's ultraviolet light causes unique shifts in the proportions in which the three isotopes of oxygen occur in the different atmospheric gases.

Students know the different atmospheric gases that absorb the Earth's thermal radiation and the mechanism and significance of the greenhouse effect.

Severinghaus and his associates concentrated on isotope rations for different atmospheric gases but paid scant attention to CO2 because they concluded that fractionation of gases with molecular diameters larger than 0.36 nm was insignificant.

Not exact matches

The researchers looked at a total of 34 different global climate model outputs, encompassing different degrees of atmospheric sensitivity to greenhouse gases and different levels of human emissions of greenhouse gases into the atmosphere.

The two got up before dawn every weekday over the summer to collect leaves from 15 tree species and take them back to the lab, where they used gas exchange equipment to measure how the leaves responded to different light and atmospheric conditions.

Then the scientists divided the «atmospheric» spectrum by the star's «clean» spectrum to determine the gas composition and density of the atmosphere at different altitudes, as well as temperatures.

The team then used these data to calculate the difference between the speed of the atmospheric gas at different positions on the star and the average speed over the entire star.

I assume that the ultimate atmospheric temperature is then dictated (approximately) by the ideal gas law, PV = nRT at the different elevations, and pegged to ~ 255 K at the ~ 10,000 m TOA energy balance point.

For example: could different oceanic circulation rates change the oceanic CO2 sink / source behaviour, or could different atmospheric conditions change the mixing rates of atmospheric gases hence modify their affect on the solar forcing?

To better determine the fate of the species in the face of climate change, the researchers analyzed a total of 34 different global climate models, taking into account atmospheric sensitivity to greenhouse gases and different levels of human greenhouse gas emissions.

In the RCPs, the concentration of greenhouse gases is fixed at different times in the future and the climate model (or general circulation model or GCM) uses those atmospheric concentrations to calculate future climate states.

In the question and answer period, Dr. Flato noted that the different pathways of atmospheric greenhouse gas concentrations diverge near the middle of the century and Dr. Zwiers offered the climate - exacerbated spread of the mountain pine beetle as an example of an impact that we have already seen here in BC (PCIC scientists have recently authored two papers on the impacts of climate change on BC's forests, see here for more).

temperature, other climatic variables, and concentrations of aerosols and trace gases; and (2) making raw and processed atmospheric measurements accessible in a form that enables a number of different groups to replicate and experiment with the processing of the more widely disseminated data sets such as the MSU tropospheric temperature record.

This model took into account the different atmospheric lifetimes of different greenhouse gases and the different radiative forcings of each gas, and also considered delays in the climate system caused primarily by the thermal inertia of the ocean.

Finally, the comprehensive information on greenhouse gases, atmospheric pollutants and land - use change allow analysts to look into the contribution of different forcing categories.

Long - term trends in the upper atmosphere - ionosphere are a complex problem due to simultaneous presence of several drivers of trends, which behave in a different way: increasing atmospheric concentration of greenhouse gases, mainly CO2, long - term changes of geomagnetic and solar activity, secular change of the Earth's main magnetic field, remarkable long - term changes of stratospheric ozone concentration, and very probably long - term changes of atmospheric dynamics, particularly of atmospheric wave activity (Lastovicka 2009; Qian et al. 2011; Lastovicka et al. 2012).

It is true that the greenhouse effect theory is based on experimental observations, e.g., a) the different infra - red properties of the atmospheric gases; b) the infra - red nature of the Earth's outgoing radiation and c) the observation that fossil fuel usage is increasing the concentration of carbon dioxide in the atmosphere.

3 Further complicating the response of the different atmospheric levels to increases in greenhouse gases are other processes such as those associated with changes in the concentration and distribution of atmospheric water vapor and clouds.

Essenhigh (2009) suggests that the difference in atmospheric CO2 residence times between the gaseous molecules 12CO2 and 14CO2 may be due to differences in the kinetic absorption and / or dissolution rates of the two different gas molecules.

This term is defined and used in slightly different ways in the context of emissions and atmospheric concentrations of greenhouse gases.

Carbon dioxide equivalents is a term used in different ways for emissions and atmospheric levels of greenhouse gases.

We study climate sensitivity and feedback processes in three independent ways: (1) by using a three dimensional (3 - D) global climate model for experiments in which solar irradiance So is increased 2 percent or CO2 is doubled, (2) by using the CLIMAP climate boundary conditions to analyze the contributions of different physical processes to the cooling of the last ice age (18K years ago), and (3) by using estimated changes in global temperature and the abundance of atmospheric greenhouse gases to deduce an empirical climate sensitivity for the period 1850 - 1980.

«The world reached its current levels of atmospheric greenhouse gases because of countless large and small decisions by governments, companies in different industries, and consumers.

Tyndall was the first to measure the radiative properties of different gases, and showed that water vapor and CO2 were the chief atmospheric greenhouse gases.)

In terms of greenhouse agents, the main conclusions from the WGI FAR Policymakers Summary are still valid today: (1) «emissions resulting from human activities are substantially increasing the atmospheric concentrations of the greenhouse gases: CO2, CH4, CFCs, N2O»; (2) «some gases are potentially more effective (at greenhouse warming)»; (3) feedbacks between the carbon cycle, ecosystems and atmospheric greenhouse gases in a warmer world will affect CO2 abundances; and (4) GWPs provide a metric for comparing the climatic impact of different greenhouse gases, one that integrates both the radiative influence and biogeochemical cycles.

However, my main objection to formulations of Dr. Glickstein still stands — the atmospheric greenhouse effect occurs not because of real cloudy air has certain non-Planck absorption - emission structure and has fluxes between different spectral bands via local with buffer gas.