Sentences with phrase «global stratospheric»

Since 1979 the Stratospheric sounding units (SSUs) on the NOAA operational satellites provided near global stratospheric temperature data above the lower stratosphere.

«This is one study where I am not eager to have our predictions proven right by a global stratospheric aerosol layer in the real world.»

A study of the coupling between the tropical QBO and the global stratospheric circulation has been performed by Marquardt (1998).

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

The trend of greater and greater depletion of global stratospheric ozone observed during the 1980s and 1990s is no longer occurring; however, it is not yet clear whether these recent changes are indicative of ozone recovery.

Fourth, volcanic aerosols provide surfaces for heterogeneous chemistry affecting global stratospheric ozone distributions (Chipperfield et al., 2003) and perturbing other trace gases for a considerable period following an eruption.

The scientific goal is to determine and interpret trends in global stratospheric ozone, the Antarctic ozone hole, and global atmospheric ozone depleting substances; to investigate these trends for signs of recovery of the ozone layer and evaluate implications for climate change; and to study the efficacy of newly proposed substitutes for currently used ozone - depleting substances.

Not exact matches

There is also growing understanding of the links between atmospheric problems such as local air pollution, acid rain, global climate change and stratospheric ozone depletion.

De Blasio got himself noticed by hitting Bloomberg the hardest and giving voice to the millions of struggling New Yorkers who looked at the post-9 / 11 gilded - age excess all around them — the stratospheric rents and impossibly high cost of living, the bank branches and chain stores squeezing out local mom - and - pops, the very skyline remade by gleaming new high - rises catering to hedge - funders and Chinese and Russian billionaires — and worried it could permanently transform the greatest city in the world into an open - air luxury mall for the global super-rich.

Dr Ryan Hossaini of Lancaster University and colleagues use simulations with a global chemical transport model to examine the sensitivity of future stratospheric chlorine and ozone levels to sustained dichloromethane growth.

Now, research suggests that for the past decade, such stratospheric aerosols — injected into the atmosphere by either recent volcanic eruptions or human activities such as coal burning — are slowing down global warming.

New supercomputer simulations suggest that the stratospheric vortex of winds helps churn the oceans around the planet — and therefore also might help shape global climate, the researchers say.

Scientists from the UNIGE explain the global temperature drop by a stratospheric injection of large amounts of sulphur dioxide reducing the intensity of solar radiation reaching the surface of Earth.

Initially, scientists believed that it was volcanoes» stratospheric ash clouds that had the dominant effect on global temperatures.

The Persistently Variable «Background» Stratospheric Aerosol Layer and Global Climate Change

Near - global satellite aerosol data imply a negative radiative forcing due to stratospheric aerosol changes over this period of about — 0.1 W / m2, reducing the recent global warming that would otherwise have occurred.

This ozone will help to compensate for any losses in stratospheric ozone, but at the cost of causing global warming.

I don't think that global warming models (which all of a sudden you seem so fond of) predict stratospheric warming, do they?

Recent studies have shown a doubling of stratospheric water vapour, likely from increasing atmospheric heights due to global warming, overshooting thunderstorm tops from stronger tropical cyclones and mesoscale convective systems etc...

The Montreal Protocol had no impact on cleaning the air, it stopped the growth of CFCs which are powerful greenhouse gases (in addition to their role in depleting stratospheric ozone), therefore it slowed global warming, rather than increasing it, and we aren't trying to save ground - level ozone.

First, stratospheric T 100 - 50 hPa has a global cooling trend for past 50 years (see Sterin thereafter for example), but how could we explain that if TSI has no change at all, particularly since 1980 (PMOD composite)?

Purveyors of this delusion cite the current «pollyanna» environment for global corporations as validation for stratospheric equity valuations.

Does this result suggest, since in the paper for the last decade stratospheric aerosols are low / flat, and since TSI is relatively flat and has small effect, that the recent fluctuation of global temperatures is mostly ENSO related?

While it is true that changing stratospheric ozone levels do impact the planets radiative balance (and vica versa) it is a 2nd order issue and global warming and ozone depletion should be viewed as two separate issues.

On the other hand, decreasing stratospheric ozone (above 25 km), increasing stratospheric water vapor, and increasing atmospheric CO2 uniformly with height) will produce global surface and tropospheric warming along with stratospheric cooling.

The Montreal Protocol was established in 1987 to facilitate a global approach to combat depletion of the stratospheric ozone layer.

Nonetheless, there is a tendency for similar equilibrium climate sensitivity ECS, especially using a Charney ECS defined as equilibrium global time average surface temperature change per unit tropopause - level forcing with stratospheric adjustment, for different types of forcings (CO2, CH4, solar) if the forcings are not too idiosyncratic.

Nevertheless, the contrasting behavior of the spectrally grey atmosphere, and of the atmosphere with the transparent spectral window, provides a clear indication of how the existence of a transparent spectral window decouples the stratospheric temperature from having to maintain (all by itself) the global energy balance set by the effective temperature Te.

The instantaneous RF difference between the tropopause and TOA is the instantaneous forcing on the stratosphere RFs1; if the TOA forcing is smaller than the tropopause forcing, then the forcing on the stratosphere is negative, which means that the stratosphere will cool (this doesn't necessarily mean it will cool everywhere, but the equilibrium response to negative stratospheric RF requires a negative PR+CR response — being the stratosphere, at least in the global time average, CR can be approximated as zero).

From Hartmann, «Global Physical Climatology», 1994, p. 28, stratospheric emission leaving the stratosphere up and down: 11 % (5 % down, 6 % up) of 342 W / m2, or 37.62 W / m2 (ignoring sig.figs).

For instance, stratospheric ozone is clearly first order for the southern hemisphere polar vortex strength, but second order (at least) for the global mean temperature.

There is a progression of global impacts from the loss of stratospheric ozone, to decling global fish stocks, to loss of topsoil and now global climate change.

Stratospheric cooling accompanied by surface warming is actually PREDICTED by GHG model yet GW deniers present the stratospheric cooling part as «proof» that global warming was NOStratospheric cooling accompanied by surface warming is actually PREDICTED by GHG model yet GW deniers present the stratospheric cooling part as «proof» that global warming was NOstratospheric cooling part as «proof» that global warming was NOT happening!!

The GISS climate model (Hansen et al., 1992) did quite well in predicting the decrease in global temperature (and increase in stratospheric warming), and the subsequent recovery to normal, due to the 1991 Pinatubo volcanic eruption.

That is because global warming, driven in part by the colossal fossil fuel consumption of today's massive global jetliner fleet, is expected to generate stronger wind shear within the stratospheric jetstreams.

REMOVING THE LINEAR EFFECTS OF ENSO AND VOLCANIC AEROSOLS HELP TO SHOW THE TIMING OF THE WARMING Many papers and blog posts that attempt to prove the existence of anthropogenic global warming remove the obvious linear effects of El Niño - Southern Oscillation (ENSO) events and of stratospheric aerosols discharged by explosive volcanic eruptions.

He was working on the history of atmospheric sciences, I was working on the history of oceanography, and we had both noticed that some of the people who were challenging the scientific evidence of global warming had previously questioned the evidence of stratospheric ozone depletion and the harms of tobacco.

Yes sure try to tell us that Antarctic cooling, a stratospheric cooling pause for 19 years, a global heating pause for 17 years and no ocean warming since accurate records replaced abject guesswork are all just «not relevant» rather than 4 separate clear refutations of manmade warming.

Stratospheric Welsbach seeding for reduction of global warming — US 5003186 A http://www.google.com/patents/US5003186

«Contributions of Stratospheric Water Vapor to Decadal Changes in the Rate of Global Warming.»

What might give rise to the discrepancies between observed and simulated global - mean stratospheric temperatures highlighted here?

«The Persistently Variable «Background» Stratospheric Aerosol Layer and Global Climate Change.»

And second, direct further use of stratospheric aerosol injection (SAI)-- but in the opposite hemisphere, so as to partially stabilise impacts on precipitation (while possibly further forcing down global temperature).

The IPCC actually cites measurements of stratospheric cooling as evidence against the hypothesis that global warming would be caused by increased solar activity, as in such case the entire atmosphere would have to show a warming trend, including the stratosphere.

Stratospheric ozone depletion proved that human beings can affect the global atmosphere significantly.

The potential effects that aviation has had in the past and may have in the future on both stratospheric ozone depletion and global climate change are covered; environmental impacts of aviation at the local scale, however, are not addressed.

Orange shading represents enhanced rates of stratospheric cooling and tropospheric warming relative to global means.

A global protocol, the Montreal Protocol, came in to force in 1987 which sought to prohibit the use of halocarbon compounds as a measure to limit stratospheric ozone depletion.

Now Eli might think that the IPCC had an information monopoly if he had not read many other reports from such as the US Global Change Research Program and he might think that the IPCC was unique, if he were not aware of such as the WMO / UNEP Science Assessment Panel on Stratospheric Ozone.

The Atmospheric Chemistry and Climate Model Intercomparison Project was organized under the auspices of Atmospheric Chemistry and Climate (AC&C), a project of International Global Atmospheric Chemistry (IGAC) and Stratospheric Processes And their Role in Climate (SPARC) under the International Geosphere - Biosphere Project (IGBP) and World Climate Research Program (WCRP).