Sentences with phrase «year variability for»

For instance, scientists are learning how El Niño affects the year - to - year variability for fire seasons in the western United States, Amazon and Indonesia.

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.

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).

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.

For the last six years, BAMS has published a December issue containing research on extreme weather events from the previous year that seeks to disentangle the role of anthropogenic climate change from natural variability.

Researchers from the University of Southampton, the National Oceanography Centre and the Australian National University developed a new method for determining sea - level and deep - sea temperature variability over the past 5.3 million years.

«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.»

«A lot of the year - to - year variability is for all practical purposes random and unpredictable,» said Sobel, who also directs a new Columbia University Initiative on Extreme Weather and Climate.

A decrease in precipitation frequency translates into even more year - to - year variability in fresh water resources for the Southwest.

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.

«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.

«For various periods over the last 60 years, we have been able to combine important processes: atmospheric variability, such as the North Atlantic Oscillation, water and air temperatures, the occurrence of fresh surface water, and the duration of convection,» explains Dr. Marilena Oltmanns from GEOMAR, lead author of the study.

That variability raises a question scientists around the world have grappled with for years: What is the most efficient way to ensure renewable energy is available when demand is greatest?

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.

In fact, sample sex ratios collected for loggerhead turtles for more than 10 years in Palm Beach County, Fla. show significant variability, with highly female - biased ratios being produced over a wider range of temperatures than are found in many well - controlled laboratory studies.

Using the 2m Faulkes Telescope North, we conducted a search for stars in M13 that show variability over a year (2005 — 2006) on timescales of days and months.

Our system predicts that internal variability will partially offset the anthropogenic global warming signal for the next few years.

With 70 years of weather records across the U.S. they were able to establish weather variability patterns and compare them to economic indicators for various sectors of the economy.

«It is odd to me to think of century - scale hydroclimate variability in terms of «extremes», a term typically reserved in climate science for timescales of hours to years.»

However, that dynamic variability is part of what makes one year so much colder than another, and the temperatures we were seeing over February and March suggested that this would be a bad year for ozone — despite the fact there was a rapid warming towards the end.

Different approaches to reconstructing past temperature for this season include the production of detailed year - by - year gridded maps and wider regional integrations in the form of subcontinental and quasi-hemispheric-scale histories of temperature variability spanning some six centuries.

As the first mission to provide extensive time series measurements on thousands of stars over months to years at a level hitherto possible only for the Sun, the results from Kepler will vastly increase our knowledge of stellar variability for quiet solar - type stars.

These shifts taken individually and together account for the year - to - year variability seen in the global average temperatures.

Moreover, any internal variability in the system will be superimposed on this even stronger growing positive trend, shifting the base climate into a state not seen for at least a few million years.

We present new estimates of the variability of ocean heat content based on: a) additional data that extends the record to more recent years; b) additional historical data for earlier years.

Despite large year - to - year variability of temperature, decadal averages reveal isotherms (lines of a given average temperature) moving poleward at a typical rate of the order of 100 km / decade in the past three decades [101], although the range shifts for specific species follow more complex patterns [102].

Marcott states that his reconstruction preserves variability for periods longer than 2000 years, only 50 % at 1000 - year periods, and no variability less than 300 years.

Aims: We aim to demonstrate the persistence of the phenomenon over time scales of a few years and to search for variability of our previously detected excesses.

A third component causing random variability beside environment and genotype: a reason for the limited success of a 30 year long effort to standardize laboratory animals?

It's interesting in light of this variability that for the past 25 years the scientific community has been forced to use just one commercial ECM matrix formulation for cell attachment.

Pharmacokinetic variability, hepatic metabolism of drugs, clearance with renal elimination, drug interactions (8) http://www.cnn.com/2007/HEALTH/conditions/09/26/unapproved.drugs/index.html NEW YORK (CNN)-- Every year, doctors write approximately 65 million prescriptions for drugs not yet approved by the U.S. Food and Drug Administration, the federal agency that regulates prescription drugs.

Because of the wide variability in students» levels of attainment, any single year - level standard, wherever it is set, will be inappropriately easy or unrealistically difficult for a large proportion of students.

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.

Inconsistent use of testing accommodations across years for students with disabilities can create variability in their growth that can be incorrectly attributed to teachers.

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.

The reliance on a single track for its profits also subjected the Company to variability in results due to potential adverse weather conditions on its two Sprint Cup weekends per year.

I started researching the process, and I got some crushing news: although I had over two years of employment history, the variability of my income meant I qualified for an extremely small loan amount.

For years, I evaluated and diagnosed pets with in - house fecal flotation with centrifugation but always saw variability in my test results, misdiagnosis of parasites, and false negative results.

Also for Florrie — here's the paper that found «17 years» needed — looking at several different data sets, figuring out how variable they are and so how many years you need to look at to drop out the natural variability, and see if there's a trend over time.

Variability in the tracks on a year by year basis, for instance, as diagnosed by the models NAO index resembles that observed, explaining about the same amount of variability aVariability in the tracks on a year by year basis, for instance, as diagnosed by the models NAO index resembles that observed, explaining about the same amount of variability avariability as observed.

As to causes, natural variability is not ruled out but Vaughn states that there is evidence that some of the disappearing ice (shelves) have been there for thousands of years — this would appear to undermine arguments for a short - term natural cycle.

For instance, an influential analysis by Hawking & Sutton (2009)(link to figures) has suggested that internal climate variability account for only about 20 % of the variance over the British isles on a 50 - year time scaFor instance, an influential analysis by Hawking & Sutton (2009)(link to figures) has suggested that internal climate variability account for only about 20 % of the variance over the British isles on a 50 - year time scafor only about 20 % of the variance over the British isles on a 50 - year time scale.

Is this actually the case — or is it that the reconstruction does not replicate the true amount of variability for the 900 years between 1000 and 1900.

Thus it appears that, provided further satellite cloud data confirms the cosmic ray flux low cloud seeding hypothesis, and no other factors were involved over the past 150 years (e.g., variability of other cloud layers) then there is a potential for solar activity induced changes in cloudiness and irradiance to account for a significant part of the global warming experienced during the 20th century, with the possible exception of the last two decades.

Specifically, tamino addressed 3 sources of variability: 1) ENSO, short term 2 - 3 years, averages out, removing it removes most of the noise 2) solar, 11 year, but roughly sinusoidal and well characterized, easily removed for that reason 3) volcano, episodic, no characteristic time period.

I don't think anyone denies that the sun matters for climate, but the question is whether the variability of the sun in recent history has had the impact that we project from greenhouse gases over the next 100 — and there, I think, a majority of your «AGW» ers» would think the evidence suggests that changes in human forcing will likely be several times (at least) larger than any solar variability we've seen in a thousand years or more.

The low r2 values are associated with year to year variability which is not really what is being looked for, rather you want a statistic that works at capturing the general level.

Since models have this variability, why is it that measured trends are calculated for only 30 years?