Sentences with phrase «high variability which»

Malaria parasites have a complex life cycle and high variability which has made the development of a vaccine a real challenge.

Not exact matches

Using resting - state MRI analysis on thousands of people's brains around the world, the research has found that the areas of the brain which are associated with learning and development show high levels of variability, meaning that they change their neural connections with other parts of the brain more frequently, over a matter of minutes or seconds.

When, for example, subjects were asked 20 times in succession to estimate the duration for which a square — displayed for exactly one second in each case — appeared on the screen, the estimates given by patients with schizophrenia exhibited a much higher level of variability than those of the control group.

At the high end, 20.8 percent of variation on power distance was between countries — which still left 79.2 percent of the variability within countries.

High reliability organisations — which have less than their fair share of accidents — recognise that human variability is a force to harness in averting errors, but they work hard to focus that variability and are constantly preoccupied with the possibility of failure

Abstract: Based on more than four weeks of continuous high cadence photometric monitoring of several hundred members of the young cluster NGC 2264 with two space telescopes, NASA's Spitzer and the CNES CoRoT (Convection, Rotation, and planetary Transits), we provide high quality, multi-wavelength light curves for young stellar objects (YSOs) whose optical variability is dominated by short duration flux burs... ▽ More Based on more than four weeks of continuous high cadence photometric monitoring of several hundred members of the young cluster NGC 2264 with two space telescopes, NASA's Spitzer and the CNES CoRoT (Convection, Rotation, and planetary Transits), we provide high quality, multi-wavelength light curves for young stellar objects (YSOs) whose optical variability is dominated by short duration flux bursts, which we infer are due to enhanced mass accretion rates.

Moreover, the secondary cortices of the occipital lobe exhibited high SI values (Figure 2), which is comparable to the reduced variability observed in visual components found by a previous ICA study [5].

Medicinal mushroom polysaccharides have some of the greatest potential for structural variability and the highest capacity for carrying biological information, which means they can stimulate the immune system to fight off cancer.

Inter-individual variability is a major problem in many areas of sports science, as it leads to great difficulty in identifying group effects, as might be desirable when comparing the EMG amplitude of a muscle during two exercises to find out which leads to the highest level of muscle activation.

So there may be some slight variability around those dates and full high season, for which we appreciate your understanding.

Likewise, we can perform satellite measurements of the lower troposphere which produce trends with virtually the same slope, although somewhat higher variability.

Given that greater sensitivity matters for the magnitude of imbalance a period during which this higher sensitivity is not activated should mean a slower rate of energy accumulation than would be the case during a period of «normal» variability.

During a period in which surface warming is stifled by internal variability the rate of energy accumulation would be influenced only by the forcing — there would be no difference between a high - sensitivity model and a zero - feedback model (assuming zero - dimensional models; the reality, with regionally varying temperatures and feedbacks, would be more complex).

WMO will issue its full Statement on the State of the Climate in 2017 in March which will provide a comprehensive overview of temperature variability and trends, high - impact events, and long - term indicators of climate change such as increasing carbon dioxide concentrations, Arctic and Antarctic sea ice, sea level rise and ocean acidification.

An ominous sign considering that El Nino is the hot phase of atmospheric and surface temperature variability — which may mean that the next El Nino will drive a global high temperature departure even more extreme than 2014's record setting value.

For this, we evaluated the collective behavior of higher - frequency variability of the residual signal in the fifteen indices, from which the multidecadal signal had been removed.

This means in the Arctic region, GISS data is relatively coarse grained, as individual grid cells above 80N may include station data interpolated out to as much as 1200 km, and are likely to show the higher short term variability which is characteristic of data from individual Polar stations.

''... worked with two sediment cores they extracted from the seabed of the eastern Norwegian Sea, developing a 1000 - year proxy temperature record «based on measurements of δ18O in Neogloboquadrina pachyderma, a planktonic foraminifer that calcifies at relatively shallow depths within the Atlantic waters of the eastern Norwegian Sea during late summer,» which they compared with the temporal histories of various proxies of concomitant solar activity... This work revealed, as the seven scientists describe it, that «the lowest isotope values (highest temperatures) of the last millennium are seen ~ 1100 - 1300 A.D., during the Medieval Climate Anomaly, and again after ~ 1950 A.D.» In between these two warm intervals, of course, were the colder temperatures of the Little Ice Age, when oscillatory thermal minima occurred at the times of the Dalton, Maunder, Sporer and Wolf solar minima, such that the δ18O proxy record of near - surface water temperature was found to be «robustly and near - synchronously correlated with various proxies of solar variability spanning the last millennium,» with decade - to century - scale temperature variability of 1 to 2 °C magnitude.»

Not only that, Curry goes past it, to, somewhat fantastically, conclude that «My assessment is that it is > 2/3 likely that there is such an extreme end «coincidental» natural variability mimicking effect (just as laid out above) and then on to say — after limiting the range of possible natural variability («coincidentally» enough) to only that which is close to this high «could» be (acc» to the IPCC) state of 50 %» natural» effect (that is, giving that itself only a 20 percent range in either direction (meaning, depending on interpretation, either a positive40 % or 30 % floor to the input of «natural» and a ceiling of 60 to 70 %)-RRB-, and thereby negating any possibility of the opposite — TO, again, the new mean representing the one directional and full extent of what, could plausibly be natural variability, and then concluding from there that «At this point, I think anthropogenic is 50 % or less.»

The impact of internal variability of the AMOC on the ITCZ is more uncertain, but there are interesting recent results, including high predictability of shifts in the ITCZ position (Martin and Thorncroft 2015), which seem to be related to changes in the AMOC in the subpolar North Atlantic.

Although there is less warming at low latitudes than at high northern latitudes, there is also less internal variability at low latitudes, which results in a greater separation of the climate simulations with and without anthropogenic forcings.

Despite this natural variability - related switch pulling global temperatures down, NASA shows a globe in which few regions experienced below - average temperatures and where the highest concentration of record - warm temperatures are centered near the northern polar region.

This evidence of reduced resistance to bleaching in 2004 in corals at Butaritari supports previous short - term manipulative experiments and long - term observational studies which found that higher background temperature variability or previous exposure to heat stress conferred bleaching resistance [15], [33]--[37].

This issue of variability is different from the problem of mean warming which is actually much larger in high latitudes than in the tropics,» Sebastian Bathiany, of the University of Wageningen in the Netherlands, who led the study, told Climate News Network.

«An examination of the fossil record indicates that the key junctures in hominin evolution reported nowadays at 2.6, 1.8 and 1 Ma coincide with 400 kyr eccentricity maxima, which suggests that periods with enhanced speciation and extinction events coincided with periods of maximum climate variability on high moisture levels.»

The point to be made regarding that paper is similar to the one I made above: there is evidence that internal variability (to the extent it can be equated with the AMO) has affected the rate at which anthropogenic forcing has warmed the surface, but most of the warming must have been forced, with the observed positive ocean heat uptake data excluding more than a very minor role for internal variability in the warming itself with very high confidence.

«Errors in external forcing data (Santer et al's preferred explanation) Internal variability (which has been supported by numerous previous studies, including posts at CE) Values of CO2 climate sensitivity that are too high (interesting new post on this over at ClimateAudit) Missing physical processes in the climate models (e.g. solar indirect effects).»

For example, these organizations are not sufficiently candid about: * The high costs of wind energy; * The added costs of wind energy due to its need for backup generating capacity from traditional energy sources because of the intermittence, variability and unpredictability of wind energy; * The absence of transmission capacity in remote areas where windmills might otherwise be acceptable; * The extent to which wind developers» costs are being shifted to taxpayers and electric customers and hidden in their tax and electric bills; * Scenic impairment and other adverse environmental, health and safety impacts.

We wanted to illustrate the potential of a long - term regional homogenized dataset mainly in three areas: (i) the high spatial density, which allows the study of small scale spatial variability patterns; (ii) the length of the series in the region which shows clear features concerning trends starting early in the pre-industrial period; and (iii) the vertical component in climate variability up to the 700 - hPa level.

The higher correlation values were achieved by the use of 12 - month smoothing, as the short - term (< 1 year) variability in the data was dampened, indicating that the higher (but still non-significant) correlations arose from the long - term variations: this is problematic to the MS00 hypothesis of a causal CR - cloud explanation for their results for reasons which will be outlined in the remainder of this section.

The contrast between different brightness components of the quiet Sun is especially high in the UV, which results in a large historical variability of the UV spectral irradiance.

This is essential when using radionuclide production rates to infer past solar activity, which is of high interest to reveal the solar influence on Earth's climate variability (e.g., Marsh & Svensmark 2003; Solanki et al. 2004; Muscheler et al. 2005b; Usoskin et al. 2006; Snowball et al. 2007).

My estimate is that between ~ 80 % to 120 % of the observed trend in recent decades is human - forced — i.e. which allows for 0.1 to 0.2 degC / dec either way for internal variability — natural forcings are a slight cooling factor on these timescales so that would imply a higher attribution to human causes.

One final caveat: After reading my first draft of the 2008 post (which I subsequently revised), Dr. Keenlyside wrote me, «All our figures are decadal means, and it is hard to say (due to high frequency internal variability) at which point [after 2010] a rapid increase will occur.»

The comment to Table 2 notes: «In general, these historical gauges were designed to monitor the sea level variability caused by El Niño and shorter - term oceanic fluctuations rather than long - term sea level change, for which a high level of precision and datum control is required.»

This high level of atmospheric variability means that sampling at one or two sites and then project that to the global level is a hopeless exercise — quite unlike the case with CO2, which tends to have a 100 - year half - life in the atmosphere.

The last low - ice event related to orbital forcing (high insolation) was in the early Holocene, after which the northern high latitudes cooled overall, with some superimposed shorter - term (multidecadal to millennial - scale) and lower - magnitude variability.

If the greenhouse effect played such a small role [edit], there should be an ENORMOUS climate sensitivity to «natural factors», which in turn strongly suggests there should be a much higher variability in global temperatures on a year - to - year basis.

Users can now benefit from the wellness monitoring tool with the all - day stress tracking feature, which not only measures stress level based on heart rate variability, but also provides accessible breathing exercise guidance if stress level ever goes high.

Additionally, individuals high in dispositional optimism also reported greater variability in state optimism, which suggested that the influence of individual differences might play a role in the ability to modulate optimism in response to situations (Shifren & Hooker, 1995b).