Sentences with phrase «atmospheric changes because»
«It's remarkable to think that that long ago the science was already pointing in a direction that we had to pay attention to atmospheric changes because they'd be so powerful that they would affect the climate,» said Carnegie Science President Matthew Scott in a video address to the symposium.
https://www.aaas.org/ Not exact matches
Sweltering summertime heat waves are on the rise across the Northern Hemisphere because of atmospheric changes brought on by Arctic warming, new research shows.
«However, atmospheric carbon dioxide levels aren't changing because the Earth has had time to respond via increased silicate - weathering rates.
What a group of physicists think about climate change matters greatly because climate science is, after all, a branch of physics, and most atmospheric scientists are based in physics departments.
«The atmospheric carbon dioxide observations are important because they show the combined effect of ecological changes over large regions,» says Graven.
When it comes to climate change science, researchers typically use atmospheric carbon dioxide levels from the late 19th century as a guideline, because that's when instrumentation was developed to accurately measure temperatures.
El Niño is a key factor in making hurricane seasonal forecasts because the changes in atmospheric patterns over the tropical Pacific that it ushers in have a domino effect on patterns over the Atlantic, tending to suppress hurricane formation.
The study stops short of attributing California's latest drought to changes in Arctic sea ice, partly because there are other phenomena that play a role, like warm sea surface temperatures and changes to the Pacific Decadal Oscillation, an atmospheric climate pattern that typically shifts every 20 to 30 years.
This is because warmer temperatures and other changes in the atmosphere related to a changing climate, including higher atmospheric levels of methane, spur chemical reactions that lead to ozone.
Because the new maps reveal microclimates and changes in the atmospheric water content over time, they may prove to be useful in the search for underground water.
Human - caused climate change has been occurring over the last 200 yr, largely because of the combustion of fossil fuels and subsequent increase of atmospheric CO2.
The latter is not equivalent to climate change not playing a role, because such results are obtained when the effect from a warmer atmosphere is in the opposite direction to the effect on the atmospheric circulation.
«We know rather little about how much methane comes from different sources and how these have been changing in response to industrial and agricultural activities or because of climate events like droughts,» says Hinrich Schaefer, an atmospheric scientist at the National Institute of Water and Atmospheric Research (NIWA) in New Zealand, who collaborates with Petrenko.
Investigations of the properties of the water column in these seas have revealed a consistent trend of waning water column ventilation over time, probably because of changes in local atmospheric forcing.
Because this climate sensitivity is derived from empirical data on how Earth responded to past changes of boundary conditions, including atmospheric composition, our conclusions about limits on fossil fuel emissions can be regarded as largely independent of climate models.
Earth, because of the climate system's inertia, has not yet fully responded to human - made changes of atmospheric composition.
Climate change could mean England is in for more such extreme rainfall events because of increasing moisture in the atmosphere and changes in atmospheric weather patterns, a new study detailed online Monday in the journal Nature Climate Change change could mean England is in for more such extreme rainfall events because of increasing moisture in the atmosphere and changes in atmospheric weather patterns, a new study detailed online Monday in the journal Nature Climate Change Change finds.
The claim of two years of 3 ppmv / yr occurred because of the way the CO2 time series straddled almost perfectly those two years (2015 - 6) along with the long term anthro atmospheric rate of change.
Because melting is so much more energetically efficient than sublimation, the main way that moderate changes in atmospheric conditions — including air temperature — affect ablation is through changing the number of hours during which melting occurs, and the amount of energy available for melting.
Addressing these three broad areas of climate change research in reverse order: -(3) The anthropogenic origin of the rise in atmospheric CO2 levels is questioned because the levels of uncertainty of the size of natural fluxes within the carbon cycle are seen as too large for such a conclusion to be made.
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.
But the ERAINT describes the atmospheric state only since 1989, and in isolation, it is not the ideal data set for making inferences about long - term climate change because it doesn't go all that far back in time.
The constraining of the atmospheric model affect the predictions where there are no observations because most of the weather elements — except for precipitation — do not change abruptly over short distance (mathematically, we say that they are described by «spatially smooth and slowly changing functions»).
In their latest Science paper submittal Jim Hansen, et al. argue that we must reduce atmospheric CO2 to below 350 ppm because so - called «slow feedbacks» such as changes in ice sheet albedo are occurring much faster than expected.
a) atmospheric CO2 from human activity is a major bause of observed warming in the 1980's and 1990's, c) that warming is overstated due to a number of factors including solar effects and measurement skew d) the data going back 150 years is of little reliability because it is clustered so heavily in northeast america and western europe rather than being global e) the global climate has been significantly shifting over the last thousand years, over the last ten thousand years, and over the last hundred thousand years; atmospheric CO2 levels did not drive those changes, and some of them were rapid.
In GCMs, the global mean evaporation changes closely balance the precipitation change, but not locally because of changes in the atmospheric transport of water vapour.
It's because atmospheric scientists will have the chance to look at climate change in a short - term scale.
«Growth in wood supply causes steady growth in atmospheric CO2 because more CO2 is added to the atmosphere every year in initial carbon debt than is paid back by regrowth, worsening global warming and climate change.
The only things that can change that resultant point of temperature equilibrium significantly are changes in solar radiance coming in and changes in overall atmospheric density (a function of mass and pressure) which affect the radiant energy going out or a change in the speed of the water cycle which, because of the unique characteristics of the phase changes of water altering the speed of energy flow through the system is capable of exerting a powerful regulatory effect.
Indeed, this is why I have repeatedly said to you: «Any assessment of the causes of the rise of atmospheric CO2 concentration over a period of years requires assessment of the changes that occur each year (because the annual increase to CO2 in the atmosphere is the residual of the seasonal changes to CO2 in the atmosphere).»
Forests were afforded their own article in the Paris Agreement (United Nations Framework Convention on Climate Change 2015) because they are so critical for their role in sequestering and storing atmospheric carbon.
Because of Earth's dynamic climate, winds and atmospheric pressure systems experience constant change.
The exact amount of this temperature increase, however, remains uncertain because of unpredictable changes in other atmospheric components, especially cloud cover.
The next thing, when the atmospheric change in CO2 declines due to the upcoming cooling, warmists wil say that the scenario C is the right one, because the forcings decrased.
Because soil is such a major player in the carbon cycle, even a small change in the amount of carbon it releases can have a big effect on atmospheric carbon concentrations.
Because the NAO is primarily controlled by intrinsic atmospheric dynamics, it constitutes a major source of unpredictable natural variability whose impacts will be superimposed upon those of anthropogenic climate change.
Many opponents of climate change policies argue that countries like the United States should not have to reduce their ghg emissions until China reduces its emissions by comparable amounts because China is now the largest emitter of all nations in terms of total tons, yet such an argument usually ignores the historical responsibility of countries like the United States which the following illustration reveals is more than twice as responsible for current elevated atmospheric ghg concentrations than China is.
Measurements of atmospheric isotopes such as C12 / C13 can not prove anything either because CO2 ′ s residence time based on the IPCC's figures in 2007 - AR4 is 3.8 years meaning the C12 / C13 ratio can not change substantially because human CO2 is rapidly absorbed by natural sinks.
This question is designed to expose that refusals of nations to reduce their emissions to their fair share of safe global emissions is implicitly a position on acceptable levels of atmospheric ghg concentrations which is essentially a moral issue because a position on acceptable atmospheric ghg concentrations is a position on who shall be greatly harmed by human - induced climate change.
Are you aware that the claim frequently made by opponents of US and other national action on climate change that if the country acts to reduce its ghg emissions and China or other developing country does not act it will make no difference because climate change will still happen is not true because ghg emissions from nations exceeding their fair share of safe global emissions are responsible for rising atmospheric concentrations of ghgs?
The statement that only 55 % of human CO2 emissions have been removed by the biosphere / biosphere is something you'll have to prove, which is hard because as far as I'm aware human CO2 does not posses an isotopic signature that can be easily differentiated from natural sources — the arguments you often hear on Skeptical Science are measurements in changes of the C12 / C13 / C14 atmospheric mass, not individual CO2 molecules, which can be misleading.
WHAT WE DENY We deny that Earth and its ecosystems are the fragile and unstable products of chance, and particularly that Earth's climate system is vulnerable to dangerous alteration because of minuscule changes in atmospheric chemistry.
Because the isotopic signatures measured in the study are lower than the values typically entered into global climate change models, the results of this study suggest the models may be underestimating the change to atmospheric carbon - 13 for each simulated emissions scenario.
«Trends in observed atmospheric water vapour are hampered by inhomogeneities in data records, which occur when measurement programmes are discontinued because of, for example, the limited lifespans of satellite missions or insufficiently documented or understood changes in instrumentation.
Because of the buffering, we do not know how much, or even if, the calcium carbonation saturation state will change with a change in atmospheric CO2.
The warming of the Arctic has become an important issue, because the prediction is that changes will be strongest and first noticeable in the Arctic and because of the undesirable environmental impact that might accompany the elevated atmospheric CO2 (2).
(b) Attributing the recent period of warm winters to an increase in strength of atmospheric circulation (in reference to Scherhag) only pushes the problem one stage back, because one should still have to account for the change in circulation.
It is our belief that «theory leads experiment» on climate change because all well - accepted atmospheric models predict a temperature rise.
Happer is correct to use linear extrapolation because that fit is the only extrapolation which does not represent a prejudice concerning how atmospheric CO2 concentration change is likely to vary in future.