Sentences with phrase «aerosol concentrations»

That said, in a trivial and largely irrelevant way, your assertions about how much impact a reduction in aerosol concentrations can have have some truth to them.

With that background, we can look at the impact of changing atmospheric aerosol concentrations.

The trouble is, previous efforts to understand how global warming affects aerosol concentrations in the air have come to mixed conclusions.

Measuring aerosol concentration and radiation will help scientists examine how clouds and aerosols interact with each other and with different layers of arctic air.

You can see this below, where high sulfate aerosol concentrations, show in orange and red, only cover a small percentage of the globe.

Models suggest atmospheric aerosol concentrations will increase as the temperatures keep climbing — and that's bad news for your lungs.

Future changes in aerosol concentrations will influence the climate system over the coming decades.

Burning fossil fuels increases aerosol concentrations in the atmosphere.

These uncertainties are reflected in the model simulations of aerosol concentrations which all show similar total amounts, but have very different partitions among the different types.

Asian dust appears to be a continuous source that dominates background dust aerosol concentrations on the west coast of the USA (Duce, 1995; Perry et al., 2004).

Precursors - Atmospheric compounds that are not greenhouse gases or aerosols, but that have an effect on greenhouse gas or aerosol concentrations by taking part in physical or chemical processes regulating their production or destruction rates.

So, when looking at the impact of aerosols on temperatures, instead of thinking about some pre - or post-eruption state, it might help you to just think about longer - term changes or deviations from the average aerosol concentration resulting from changes in volcanic activity.

Even as global rainfall is expected to increase, Allen, Landuyt, and Rumbold write, there's likely to be less frequent rainfall and, in some regions, less precipitation overall, resulting in higher aerosol concentrations.

The international team examined vertical wind motion, or updrafts, and aerosol concentration data from one of these stations from March to May 2014.

In these lower layers of the stratosphere, aerosol concentrations rose after known volcanic eruptions and then dropped off, Ridley says.

Rosenfeld and his colleagues are now working on a project to do exactly that by studying aerosol concentrations over Houston, where the team also has access to a dedicated lightning - mapping array.

Therefore it seems difficult at present to use satellite observations to estimate the first aerosol indirect forcing unless some changes in cloud albedo could be tied to changes in aerosol concentrations under the assumption of constant liquid water content.

I've forgotten the details) a weaker cooling signal in the Arctic, where aerosol concentrations were low, which is not well understood.

First, if significant aerosol concentrations only cover, say, 10 % of the globe, doesn't that mean that to get a 0.5 degree cooling effect for the whole Earth, there must be a 5 degree cooling effect in the affected area.

Because of this, they are poorly mixed, and so aerosol concentrations are spotty and generally can be found to the east (downwind) of large industrial complexes (see sample map here).

Aerosol concentrations eventually decrease in all RCPs, following the strong decrease in emissions, especially those of anthropogenic SO2.

Using water to represent the atmosphere and milk droplets to represent aerosols, students make predictions and conduct investigations to discover how different aerosol concentrations affect atmospheric color and visibility.

As a result, not only did atmospheric aerosol concentrations not quadruple, they declined starting in the late 1970s:

In the new study, Ridley and his co-authors checked aerosol concentrations in the high latitudes more directly, with instruments lofted on balloons and lasers that scan particles from the ground.

Together with potentially increased tropical aerosol concentrations, they might even have an impact on the stratospheric background AOD currently (Vernier et al..

Early one - dimensional box - model estimates of the radiative forcing (e.g., Charlson et al., 1992) using simplified expressions for radiative forcing have been superseded by global calculations using prescribed aerosol concentrations from chemical transport models (CTMs).

The OMPS map depicts relative aerosol concentrations, with lower concentrations appearing in yellow and higher concentrations appearing in dark orange - brown.

Reductions in aerosol concentrations lead to an increase in downward surface solar radiation under all - sky conditions in various parts of the world, especially in Asia where the local brightening may reach about 10 Wm

During a dry winter, the reduction of aerosol concentrations in weekend days may overwhelmingly impact on the DTR through a direct effect, i.e. by increasing total solar irradiance near the surface and raising the daytime temperature and maximum temperature, and lowering relative humidity.

So the whole basis for the study is flawed — its based on the affect of increasing aerosol concentrations that actually are not increasing.

The global stratospheric aerosol concentrations in 2005 were at their lowest values since satellite measurements began in about 1980.

Thus, over any long enough period of time, you can describe an average atmospheric aerosol concentration — as aerosols naturally leave the atmosphere, new ones are injected into it by ongoing eruptions.

Similarly, the more protracted the state of reduced volcanic activity — > the larger and longer the reduction in aerosol concentrations — > the larger and more persistent the impact on temperatures.

The results, said co-author and PNNL laboratory fellow Ruby Leung, «strongly suggest that increasing aerosol concentrations (particles, mainly soot and sulfur, that pollute the air) in the past has produced a fog - like haze that has reduced solar radiation (surface heat from sunshine), despite more frequent clear days that should lead to increased solar radiation.»

It is my understanding that the uncertainties regarding climate sensitivity to a nominal 2XCO2 forcing is primarily a function of the uncertainties in (1) future atmospheric aerosol concentrations; both sulfate - type (cooling) and black carbon - type (warming), (2) feedbacks associated with aerosol effects on the properties of clouds (e.g. will cloud droplets become more reflective?)

Changes to aerosol concentrations can be reversed in a few weeks after an emission change.

It is not clear, however, to what extent changes in cloud droplet size are related to change in aerosol concentrations.

«Global Upper Ocean Heat Storage Response to Radiative Forcing from Changing Solar Irradiance and Increasing Greenhouse Gas / Aerosol Concentrations.»

And even if they had a good handle on the effects of aerosol concentrations, no one agrees on the actual numbers for aerosol concentrations or production.

Despite the models» varying assumptions and parameters, they all came to basically the same conclusion: Aerosol concentrations are almost certainly going to go up, likely by about 10 percent over the next century.

Yes, their global cooling projection was based on a quadrupling of atmospheric aerosol concentration.