Sentences with phrase «scale atmospheric changes»

The smaller the squares, the higher the model's resolution and the better it will be at detecting small - scale atmospheric changes that could spawn storms.

Not exact matches

Tropical widening is associated with several significant changes in our climate, including shifts in large - scale atmospheric circulation, like storm tracks, and major climate zones.

«This emphasizes the importance of large - scale energy transport and atmospheric circulation changes in restoring Earth's global temperature equilibrium after a natural, unforced warming event,» Li said.

There are strong competing effects such as changes in the large - scale atmospheric circulation, sea surface temperature changes like El Niño and La Niña and the dynamics of westerly storm tracks that all interact at the mid-latitudes,» said Stanford co-author Matthew Winnick who contributed to the study with fellow doctoral student Daniel Ibarra.

Changes in the large - scale atmospheric circulation are apparent.

As discussed in the Climate chapter, large - scale atmospheric circulation patterns connected to changes in sea - surface temperatures strongly influence natural variations in precipitation and temperature (e.g., Cayan et al. 1999; Mantua and Hare 2002).

So apparently you're suggesting that decadal - scale precipitation patterns (more, less rainfall) and temperature changes are better explained by atmospheric CO2 concentrations.

This 2006 study found that the effect of amplifying feedbacks in the climate system — where global warming boosts atmospheric CO2 levels — «will promote warming by an extra 15 percent to 78 percent on a century - scale» compared to typical estimates by the U.N.'s Intergovernmental Panel on Climate Change.

Insect outbreaks such as this represent an important mechanism by which climate change may undermine the ability of northern forests to take up and store atmospheric carbon, and such impacts should be accounted for in large - scale modelling analyses.

What is still contentious is what the result implies for the YD climate change and the megafaunal extinctions, incorporating the ideas of both the broad large scale cometary debris impact scenario at low grazing angles, and the direct asteroidal impact into water and ice covered surfaces, and all that implies with the ice sheet disruptions, megatsunamis and the ozone layer and atmospheric effects and disruption that are possible in these events.

Quote: Retired senior NASA atmospheric scientist, Dr. John S. Theon, 15th Jan 2009,» My own belief concerning anthropogenic climate change is that the models do not realistically simulate the climate system because there are many very important sub-grid scale processes that the models either replicate poorly or completely omit.

Because the drains out of the various bathtubs involved in the climate — atmospheric concentrations, the heat balance of the surface and oceans, ice sheet accumulations, and thermal expansion of the oceans — are small and slow, the emissions we generate in the next few decades will lead to changes that, on any time scale we can contemplate, are irreversible.

we use global - scale atmospheric CO2 measurements, CO2 emission inventories and their full range of uncertainties to calculate changes in global CO2 sources and sinks during the past 50 years.

Since El Nino also has an important impact on the Asian Summer Monsoon in particular, its hard to know precisely what large - scale changes in atmospheric circulation are due to the radiative forcing of the eruption itself, and the secondary response to that eruption of ENSO.

Large scale dust storms change the atmospheric opacity and convection; as always when comparing mean temperatures, the altitude at which the measurement is made matters, but to the extent it is sensible to speak of a mean temperature for Mars, the evidence is for significant cooling from the 1970's, when Viking made measurements, compared to current temperatures.

Especially at the regional scale, ocean and atmospheric circulation changes are clearly also important.

Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record.

The atmospheric change is due to mainly to human combustion of fossil fuels, but also to large - scale tropical deforestation and wetland removal.

If we do overshoot our carbon «budget» in the next several decades, the only way to return atmospheric CO2 concentrations to levels that avoid climate change will be to deploy large - scale CDR projects capable of generating net «negative» emissions:

It is virtually certain that millennial - scale changes in atmospheric CO2 associated with individual antarctic warm events were less than 25 ppm during the last glacial period.

Its findings suggest that changing storm patterns and the ensuing droughts are due to a southern shift in the Hadley cell, the large - scale pattern of atmospheric circulation that transports heat from the tropics to the subtropics.

Ice cores show atmospheric CO2 variations to lag behind atmospheric temperature changes on a century to millenium scale, but modern temperature is expected to lag changes in atmospheric CO2, as the atmospheric temperature increase since about 1975 generally is assumed to be caused by the modern increase in CO2.

It's because atmospheric scientists will have the chance to look at climate change in a short - term scale.

All that said, we can draw the conclusion that the theoretical effects of CO2 do in fact exist, they have been measured over a 10 cm path length, and from this we can extrapolate that a still higher sensitivity would be arrived at once the entire atmospheric scale and the change in water vapour concentration from bottom to top of that scale is taken into account.

So if there were, say, a decadal - scale 1 % -2 % reduction in cloud cover that allowed more SW radiation to penetrate into the ocean (as has been observed since the 1980s), do you think this would have an impact of greater magnitude on the heat in the oceans than a change of, say, +10 ppm (0.00001) in the atmospheric CO2 concentration?

A large decrease in atmospheric CH4 concentrations (several tens of parts per billion; Spahni et al., 2003) reveals the widespread signature of the abrupt «8.2 ka event» associated with large - scale atmospheric circulation change recorded from the Arctic to the tropics with associated dry episodes (Hughen et al., 1996; Stager and Mayewski, 1997; Haug et al., 2001; Fleitmann et al., 2003; Rohling and Palike, 2005).

changes to atmospheric CO2 concentration FOLLOW changes to global temperature at all — yes, all — time scales, and a cause can not follow its effect,

available peer - reviewed, science - based evidence to model the implications of their proposals for atmospheric carbon dioxide concentrations, global mean surface temperature, sea level rise, and other climate change impacts at the global scale.

There are changes in ocean and atmospheric circulation — and cloud — at multidecadal scales.

-- Despite CO2's known greenhouse properties, changes in atmospheric CO2 lag behind changes in temperature on all observed time - scales.

It seems unlikely that low level clouds — especially marine stratocumulous — would not respond to large scale changes in ocean and atmospheric conditions.

Recent global climate change is also likely to affect large - scale atmospheric circulation patterns, with strong nonlinear feedbacks between thermodynamic and dynamic components of the climate system (10, 11).

A formal derivation of the dynamic relation between the atmosphere and solid earth make it possible to calculate the changes in the earth's rotational velocity from the large - scale distribution of the atmospheric pressure and dynamics of the wind fields (Barnes et al. 1983).

«In 2007 a team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scales.

Such P trends are consistent with the anomalous large - scale atmospheric circulation changes.

Tags: atmospheric chemistry and physics, atmospheric scientist, climate change, co author, deluge, domino effect, ganges, glaciers, global scale, greenhouse gases, india china, monsoon, pacific northwest, pacific northwest national lab, s glacier, soot, strong winds, summer crops, tibetan plateau, yangtze

«On the global scale, greenhouse gases like carbon dioxide cause the most concern related to climate change,» said Yun Qian, the paper's lead author and an atmospheric scientist at PNNL.

This measure is available for the US from the BEST data set... The reconfirmation now of a strong sun - temperature relation based specifically upon the daytime temperature maxima adds strong and independent scientific weight to the reality of the sun - temperature connection... This suggests strongly that changes in solar radiation drive temperature variations on at least a hemispheric scale... Close correlations like these simply do not exist for temperature and changing atmospheric CO2 concentration.»

This section documents regional changes and slow fluctuations in atmospheric circulation over past decades, and demonstrates that these are consistent with large - scale changes in other variables, especially temperature and precipitation.

«On the global scale, greenhouse gases like carbon dioxide cause the most concern related to climate change,» said Yun Qian, study co-author and atmospheric scientist at Pacific Northwest National Lab in the US.

The large interannual to decadal hydroclimatic variability in winter precipitation is highly influenced by sea surface temperature (SST) anomalies in the tropical Pacific Ocean and associated changes in large - scale atmospheric circulation patterns [16].

(3) Natural as well as human - induced changes should be taken into account in climate model simulations of atmospheric temperature variability on the decade - to - decade time scale.

It is nonsense to think that cloud changes are not part of these shifts in large scale ocean and atmospheric patterns.

This 2006 study found that the effect of amplifying feedbacks in the climate system — where global warming boosts atmospheric CO2 levels — «will promote warming by an extra 15 percent to 78 percent on a century - scale» compared to typical estimates by the U.N.'s Intergovernmental Panel on Climate Change.

The idea of atmospheric CO2 causing such a measureable change on the scale of the world's oceans is just risible.

Change to atmospheric carbon dioxide concentration is observed to follow change to global temperature at all time sChange to atmospheric carbon dioxide concentration is observed to follow change to global temperature at all time schange to global temperature at all time scales.

The Vostok record of atmospheric CO2 and Antarctic climate is consistent with a view of the climate system in which CO2 concentration changes amplify orbitally - induced climate changes on glacial / inter-glacial time - scales (Shackleton, 2000).

«-- A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scales.

Shows that the changes in discharge extremes are related to the regional pluriannual rainfall variability and the associated atmospheric circulation as well as to tropical large - scale climatic indicators

The changes in ocean and atmospheric regimes modulate the energy budget of the planet on all scales.