Sentences with phrase «larger changes in the frequency»

*** Renewables «can't cope with sudden surges» The Australian Michael Owen 16 December 2016 Renewable power sources can not cope with rapid or large changes in frequency, leading ultimately to a «black system», a report by a national electricity regulator says.

Not exact matches

The researchers, from the University of Reading and University of Iowa, found that large parts of the projected changes in AR frequency and intensity would be down to thermodynamic changes in the atmosphere, rather than the natural variability of the climate, suggesting that it is a response to anthropogenic climate change.

This means that even relatively small marine - protected areas could be effective in protecting the top - level predators and allowing coral reefs to more fully recover from coral bleaching or large cyclones which are increasing in frequency due to the warming of the oceans as a result of climate change.

This is addressed by evaluating change in global or large - scale patterns in the frequency or intensity of extremes (e.g., observed widespread intensification of precipitation extremes attributed to human influence, increase in frequency and intensity of hot extremes) and by event attribution methods.

«Our findings suggest that recent human adaptation has not taken place through the arrival and spread of single changes of large effect, but through shifts of frequency in many places of the genome,» said Molly Przeworski, PhD, professor of Human Genetics and Ecology & Evolution at the University of Chicago and co-senior author of the paper.

As Little (1993) suggests, instructional change is dependent on teachers» opportunities to learn about new ideas and adapt them to local conditions (McLaughlin, 1987; Standerford, 1997); districts have a large hand in determining the nature, frequency, and effectiveness of these learning opportunities.

Excessive thirst and drinking frequency, larger volumes of urine and changes in behavior can indicate a kidney problem.

The largest climate mode shift over this time interval, occurring ~ 950,000 years before the present (the mid-Pleistocene transition), has previously been attributed to changes in the pattern and frequency of ice sheets.

4 % change in whole - spectrum blackbody flux per unit area, with larger % changes occuring at higher frequencies (shorter wavelengths):

But this human adaptation time scale may be longer than the time over which climate change affects storms, so that comparatively small changes in the frequency of generational events can have large social consequences.

In New Orleans, geophysical vulnerability is characterized by its below - sea level, bowl - shaped location, its accelerating subsidence, rising sea level, storm surges, and possible increased frequency of larger hurricanes from climate change.

One 2013 study in Nature Climate Change, for example, found large increases in the frequency of floods in eastern Africa, Southeast Asia, parts of India and parts of the Andes under climate cChange, for example, found large increases in the frequency of floods in eastern Africa, Southeast Asia, parts of India and parts of the Andes under climate changechange.

«Some of the world's largest population centers, like India and China, happen to also be places that we see significant changes in terms of the increasing frequencies [of stagnant air days],» Horton said.

Abstract — 2008 Climate and wildfires in the North American boreal forest... Climate controls the area burned through changing the dynamics of large - scale teleconnection patterns (Pacific Decadal Oscillation / El Niño Southern Oscillation and Arctic Oscillation, PDO / ENSO and AO) that control the frequency of blocking highs over the continent at different time scales......... Since the end of the Little Ice Age, the climate has been unusually moist and variable: large fire years have occurred in unusual years, fire frequency has decreased and fire — climate relationships have occurred at interannual to decadal time scales...... http://rstb.royalsocietypublishing.org/content/363/1501/2315.short ----------------------

For the entire Northern Hemisphere, there is evidence of an increase in both storm frequency and intensity during the cold season since 1950,1 with storm tracks having shifted slightly towards the poles.2, 3 Extremely heavy snowstorms increased in number during the last century in northern and eastern parts of the United States, but have been less frequent since 2000.11,15 Total seasonal snowfall has generally decreased in southern and some western areas, 16 increased in the northern Great Plains and Great Lakes region, 16,17 and not changed in other areas, such as the Sierra Nevada, although snow is melting earlier in the year and more precipitation is falling as rain versus snow.18 Very snowy winters have generally been decreasing in frequency in most regions over the last 10 to 20 years, although the Northeast has been seeing a normal number of such winters.19 Heavier - than - normal snowfalls recently observed in the Midwest and Northeast U.S. in some years, with little snow in other years, are consistent with indications of increased blocking (a large scale pressure pattern with little or no movement) of the wintertime circulation of the Northern Hemisphere.5 However, conclusions about trends in blocking have been found to depend on the method of analysis, 6 so the assessment and attribution of trends in blocking remains an active research area.

2: Our Changing Climate, Key Message 5).2 Regional climate models (RCMs) using the same emissions scenario also project increased spring precipitation (9 % in 2041 - 2062 relative to 1979 - 2000) and decreased summer precipitation (by an average of about 8 % in 2041 - 2062 relative to 1979 - 2000) particularly in the southern portions of the Midwest.12 Increases in the frequency and intensity of extreme precipitation are projected across the entire region in both GCM and RCM simulations (Figure 18.6), and these increases are generally larger than the projected changes in average precipitation.12, 2

Even signals that are cyclic, but have distinct phase changes exhibit a large amount of interference in lower frequency bands.

On the other hand, if by some chance and what ends up happening is totally independent of human activity, because it turns out after all that CO2 from fossil fuels is magically transparent to infrared and has no effect on ocean pH, unlike regular CO2, say, but coincidentally big pieces of the ice sheets melt and temperature goes up 7 C in the next couple of centuries and weather patterns change and large unprecedented extreme events happen with incerasing frequency, and coincidentally all the reefs and shellfish die and the ocean becomes a rancid puddle, that could be unfortunate.

Trends in the peak magnitude, frequency, duration and volume of frequent floods (floods occurring at an average of two events per year relative to a base period) across the United States show large changes; however, few trends are found to be statistically significant.

Observed changes in short term precipitation intensity from previous research and the anticipated changes in flood frequency and magnitude expected due to enhanced greenhouse forcing are not generally evident at this time over large portions of the United States for several different measures of flood flows.

Hagos, S. M., et al., 2016: A projection of changes in landfalling atmospheric river frequency and extreme precipitation over western North America from the Large Ensemble CESM simulations.

Detecting glacialquakes is important because glaciers appear to accelerate after large calving events.2 The frequency of glacialquakes — which has been rising since the late 1990s — has increased particularly since 2002.3 In fact, the number of quakes in 2005 was twice that of 2001.1 In late summer of 2005, glacial seismic activity was almost five times greater than in the winter months — most likely owing to seasonal changes in temperature.1,In fact, the number of quakes in 2005 was twice that of 2001.1 In late summer of 2005, glacial seismic activity was almost five times greater than in the winter months — most likely owing to seasonal changes in temperature.1,in 2005 was twice that of 2001.1 In late summer of 2005, glacial seismic activity was almost five times greater than in the winter months — most likely owing to seasonal changes in temperature.1,In late summer of 2005, glacial seismic activity was almost five times greater than in the winter months — most likely owing to seasonal changes in temperature.1,in the winter months — most likely owing to seasonal changes in temperature.1,in temperature.1, 3

The overall result of the analysis is similar to the real - time analysis with a best estimate of a 59 % increase in event frequency, but a larger confidence interval that does include no change.

I can only make two conclusions, (1) there are no predictable changes in the large scale circulation patterns (e.g. frequency, length, phase) or (2) the models can not accurately model the changes.

In short there are difficult to predict volcano eruptions, varying ocean circulation, clouds and more clouds, a varying sun (both TSI and larger frequency deltas), changing vegetation albedo, atmospheric albedo including 03, earth's position and orientation and more including cosmic rays.

In addition to local weather patterns, shaped by climate change, a review of Chile's wildfires published in the Global and Planetary Change journal warned that the «pattern, frequency and intensity» of wildfires in the country «has grown at an alarming rate» in recent years, partly because of intensive forest management practices that have led to a large amount of flammable fuel in the country's forestIn addition to local weather patterns, shaped by climate change, a review of Chile's wildfires published in the Global and Planetary Change journal warned that the «pattern, frequency and intensity» of wildfires in the country «has grown at an alarming rate» in recent years, partly because of intensive forest management practices that have led to a large amount of flammable fuel in the country's fochange, a review of Chile's wildfires published in the Global and Planetary Change journal warned that the «pattern, frequency and intensity» of wildfires in the country «has grown at an alarming rate» in recent years, partly because of intensive forest management practices that have led to a large amount of flammable fuel in the country's forestin the Global and Planetary Change journal warned that the «pattern, frequency and intensity» of wildfires in the country «has grown at an alarming rate» in recent years, partly because of intensive forest management practices that have led to a large amount of flammable fuel in the country's foChange journal warned that the «pattern, frequency and intensity» of wildfires in the country «has grown at an alarming rate» in recent years, partly because of intensive forest management practices that have led to a large amount of flammable fuel in the country's forestin the country «has grown at an alarming rate» in recent years, partly because of intensive forest management practices that have led to a large amount of flammable fuel in the country's forestin recent years, partly because of intensive forest management practices that have led to a large amount of flammable fuel in the country's forestin the country's forests.

«Working with data pertaining to 7450 cardiovascular - related deaths that occurred within Budapest, Hungary, between 1995 and 2004 — where the deceased were «medico - legally autopsied» — Toro et al. looked for potential relationships between daily maximum, minimum and mean temperature, air humidity, air pressure, wind speed, global radiation and daily numbers of the heart - related deaths... scientists report and restate their primary finding numerous times throughout their paper, writing that (1) «both the maximum and the minimum daily temperatures tend to be lower when more death cases occur in a day,» (2) «on the days with four or more death cases, the daily maximum and minimum temperatures tend to be lower than on days without any cardiovascular death events,» (3) «the largest frequency of cardiovascular death cases was detected in cold and cooling weather conditions,» (4) «we found a significant negative relationship between temperature and cardiovascular mortality,» (5) «the analysis of 6 - hour change of air pressure suggests that more acute or chronic vascular death cases occur during increasing air pressure conditions (implying cold weather fronts),» (6) «we found a high frequency of cardiovascular death in cold weather,» (7) «a significant negative relationship was detected between daily maximum [and] minimum temperature [s] and the number of sudden cardiovascular death cases,» and (8) «a significant negative correlation was detected between daily mean temperature and cardiovascular mortality.»

Scientists investigated whether the expert climate change prediction that growing CO2 emissions, and the subsequent atmospheric increase of CO2, would cause an increase in the frequency and severity of large flooding.

«There is no compelling evidence to indicate that the characteristics of tropical and extratropical storms have changed... Owing to incomplete data and limited and conflicting analyses, it is uncertain as to whether there have been any long - term and large - scale increases in the intensity and frequency of extra-tropical cyclones in the Northern Hemisphere.

With regard to wildfires, see Western U.S. Forest Wildfire Activity: «Thus, although land - use history is an important factor for wildfire risks in specific forest types... the broad - scale increase in wildfire frequency across the western United States has been driven primarily by sensitivity of fire regimes to recent changes in climate over a relatively large area.»