And year - to -
year variability in the CO2 rise is more determined by the sinks than the sources.
«The remainder [of the rise] is due to year - to -
year variability in temperatures,» according to the study.
CL at # 45 wrote: «As ice volume decreases, the fraction of volume which is new ice increases, and hence the year to
year variability in new ice becomes a larger fraction of the total ice volume variability, so I don't think the smoothed downward slope will stay as smooth, i.e. you should expect bigger surprises to the upside on a given winter if it is cold and has heavy snow fall.»
Beckwith, 3.25 (2.75 - 3.75), Heuristic The large year - to -
year variability in the sea ice extent makes this sort of prediction very dicey.
A key aspect concerns the enigmatic Atlantic Multidecadal Oscillation (AMO), a feature defined by a 60 - to 90 -
year variability in North Atlantic sea - surface temperatures.
Even significant if you include the year by
year variability in increase rate (of + / - 0.5 ppmv) around the trend.
The seasonal variation has nothing to do with the year by
year variability in rise of CO2 levels nor with the trend itself.
In reality Imbalance in the seasonal variation CREATES the year by
year variability in rise of CO2 levels AND the trend itself.
Come on Richard, The seasonal variation has nothing to do with the year by
year variability in rise of CO2 levels nor with the trend itself.
Changes in ocean circulation, which are loosely coupled to the atmospheric energy exchange, can produce substantial year - to -
year variability in global temperatures (e.g., El Nino and La Nina events).
As of this writing, there is observational and modeling evidence that: 1) both annular modes are sensitive to month - to - month and year - to -
year variability in the stratospheric flow (see section on Stratosphere / troposphere coupling, below); 2) both annular modes have exhibited long term trends which may reflect the impact of stratospheric ozone depletion and / or increased greenhouse gases (see section on Climate Change, below); and 3) the NAM responds to changes in the distribution of sea - ice over the North Atlantic sector.
It was well known — and in fact had been demonstrated most recently in an article in Nature — that, while el nino, along with volcanic eruptions, did explain a fair amoount of the short - term year - to -
year variability in global temperatures, it could not accouny for the warming trend., Had McLean et al somehow discovered something that had eluded the entire research community fir decades?
Wili: As ice volume decreases, the fraction of volume which is new ice increases, and hence the year to
year variability in new ice becomes a larger fraction of the total ice volume variability, so I don't think the smoothed downward slope will stay as smooth, i.e. you should expect bigger surprises to the upside on a given winter if it is cold and has heavy snow fall.
They should also be prepared for greater year - to -
year variability in value - added for a few years after the change when they will be using both old and new tests.
Research and past experience suggests that teachers should be prepared for greater year - to -
year variability in their value - added ranking for a few years after the change when districts use both old and new tests for value - added calculations.
«There's a lot of year - to -
year variability in both Arctic and Antarctic sea ice, but overall, until last year, the trends in the Antarctic for every single month were toward more sea ice,» said Claire Parkinson, a senior sea ice researcher at Goddard.
A decrease in precipitation frequency translates into even more year - to -
year variability in fresh water resources for the Southwest.
Not exact matches
As we've demonstrated repeatedly, the valuation measures most strongly correlated with actual subsequent returns, particularly over a 7 - 15
year horizon, are those that normalize for profit margin
variability in some way.
The
variability of inflation has been a bit higher over the past 10
years than
in the preceding decade.
I mean what we've learned over the last several
years is that there's tremendous
variability across the
year, and so you had really strong sales results at Red Lobster first quarter last
year, weak earnings results because of the
variability in food costs.
In addition to improving flow variability within the river channel, the proposed weir pool manipulation events will provide inundation for fringing wetlands and lakes, as well as flows through important flowing habitat for fish such as in Potterwalkagee Creek (Mulcra Island) and Lindsay River and Mullaroo Creek, (where regulating structures constructed under The Living Murray program were commissioned this year
In addition to improving flow
variability within the river channel, the proposed weir pool manipulation events will provide inundation for fringing wetlands and lakes, as well as flows through important flowing habitat for fish such as
in Potterwalkagee Creek (Mulcra Island) and Lindsay River and Mullaroo Creek, (where regulating structures constructed under The Living Murray program were commissioned this year
in Potterwalkagee Creek (Mulcra Island) and Lindsay River and Mullaroo Creek, (where regulating structures constructed under The Living Murray program were commissioned this
year).
There's a great deal of
variability in how screen time affects different children and there are enormous positives to be found
in the offerings of today's technology, but apparently not
in a child's earliest
years.
By comparison, phenacosaur anoles living
in cloud forests have had very little exposure to temperature
variability for over 10 million
years and are very much at risk from climate change, he said.
«For
years, we've been using ice cores to look at the natural
variability in the system,» says Thompson.
They concluded that the heavy rains
in Europe last
year were likely due to natural
variability in the climate system rather than climate change.
In recent
years, many studies have sought to unsnarl the role of anthropogenic climate change from natural
variability on extreme weather events (SN: 1/20/18, p. 6).
Over 10
years the scientists measured the amount of new growth (productivity) generated by all species
in each plot, and the
variability of that productivity (stability) from
year to
year.
Schultz, a professor of synoptic meteorology, and co-author Dr Vladimir Janković, a science historian specialising
in weather and climate, say the short - term, large
variability from
year to
year in high - impact weather makes it difficult, if not impossible, to draw conclusions about the correlation to longer - term climate change.
This
variability includes the Pacific Decadal Oscillation (PDO), a long - lived El Niño - like pattern of Pacific climate
variability that works like a switch every 30
years or so between two different circulation patterns
in the North Pacific Ocean.
The crucial question now is whether the temperature changes
in the Pacific reflect a natural
variability in the climate that might reset itself
in a few
years or whether the shift to weaker long rains is a permanent result of human - induced climate change.
«We've known for 30
years that the cheetah has a low
variability at some immune genes, but they thrive
in a pathogen - laden environment.»
Lead author of the study Dr David Reynolds, from the School of Earth and Ocean Sciences, said: «Our results show that solar
variability and volcanic eruptions play a significant role
in driving
variability in the oceans over the past 1000
years.
This record also seems to show that the rise
in methane levels
in the last 10,000
years — thought by some to be a result of human agriculture — could simply be the result of natural
variability in the decomposition of plants
in boreal forests and wetlands.
However, declining human semen quality remains a controversial issue — many have criticised the
variability of the data of the studies on the basis of changes
in laboratory methods, training of laboratory personnel and improved quality control over the
years.
The annual
variability and trends
in loggerhead nesting numbers
in Florida are associated with long - term survival at sea from hatchling to maturity, combined with climate - driven changes
in mature female foraging areas within a
year or two before nesting.»
If first - timers contributed more to nesting
variability and trends, a decline
in the
years 2029 - 2038 would be expected.
Some show far more
variability leading up to the 20th century than the hockey stick, but none suggest that it has been warmer at any time
in the past 1000
years than
in the last part of the 20th century.
The newly released measurements constitute a nearly continuous global record of the
variability in this radiation belt for the past 16
years, including how it responds to solar storms.
But with the frequency of droughts expected to triple
in the next 100
years, researchers fear the resulting
variability and stress to agriculture and civilization could prove destabilizing for many regions.
Several studies have shown the drug helps about half of the people who take it lose more than 5 percent of their body mass within a
year, but there's a great deal of
variability in individual results, and the mechanism underlying its effect was previously unknown.
The AMO also shows strong
variability from one
year to the next
in addition to the changes seen every 60 - 70
years, which makes it difficult to attribute specific extreme winters to the AMO's effects.
I plotted out the
variability in million -
year intervals and found that about 6 million
years ago, that
variability went off the charts and kept increasing.
The paradox is that this season stands
in such stark contrast to the past 11
years of drought, highlighting the types of
variability that climate change can wreak on the hydrological cycle.
In recent years, a brand of research called «climate attribution science» has sprouted from this question, examining the impact of extreme events to determine how much — often in fractional terms — is related to human - induced climate change, and how much to natural variability (whether in climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes in incoming solar radiation, or a host of other possible factors
In recent
years, a brand of research called «climate attribution science» has sprouted from this question, examining the impact of extreme events to determine how much — often
in fractional terms — is related to human - induced climate change, and how much to natural variability (whether in climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes in incoming solar radiation, or a host of other possible factors
in fractional terms — is related to human - induced climate change, and how much to natural
variability (whether
in climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes in incoming solar radiation, or a host of other possible factors
in climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes
in incoming solar radiation, or a host of other possible factors
in incoming solar radiation, or a host of other possible factors).
El Niño is a weather pattern characterized by a periodic fluctuation
in sea surface temperature and air pressure
in the Pacific Ocean, which causes climate
variability over the course of
years, sometimes even decades.
Currently, ACME collaborators are focused on developing an advanced climate model capable of simulating 80
years of historic and future climate
variability and change
in 3 weeks or less of computing effort.
The groundbreaking study revealed that, globally, the
year - to -
year variability of the land carbon balance — the exchange of carbon that takes place between the land biosphere and the atmosphere — responds most significantly to changes
in temperature.
The PBL found that «this statement is not directly a statement of climate change, but of climate
variability:
in individual
years, drought can cause up to 50 per cent yield reductions».
Both of El Niño's counterparts will be looked at more closely
in a 15 -
year programme studying climate
variability known as CLIVAR, which is the follow - up to TOGA.
Unlike the freakish situation
in California, where several
years of low snowfall and rainfall are serving as a reminder of the tremendous natural
variability in Pacific - influenced weather, and the need to always be vigilant when it comes to managing water supplies, the situation
in Washington resembles the parched climate - changed normal for swaths of the West
in the decades ahead.