Sentences with phrase «studying changes in the frequency»

One of the difficulties studying changes in the frequency and intensity of cyclones is that the record of past storms is inhomogeneous, due to changes in observational capabilities and how storms have been measured and recorded.

Not exact matches

Theoretical studies suggest that nuclear clocks that make use of analogous changes in the energy states of atomic nuclei could provide even more accurate frequency standards for timekeeping purposes.

Turin says the strongest tests of his theory so far come from studies in which researchers replace an odorant atom with an isotope of that atom, which has a slightly different weight and changes the molecule's frequency of vibration.

Results showed that, among study participants with asymmetry in temporal lobe high frequency electrical activity, those with right compared to left side asymmetry had higher resting heart rates and other changes suggesting that the cardiovascular system may be less capable of adapting to shifting circumstances.

Rainstorms increased in frequency over the study period, and the authors suggest that this, as well as the synchronization between rainstorms and chick vulnerable periods, is likely to increase with climate change.

While natural climate variations like El Niño do affect the frequency and severity of heat waves from one year to the next, the study suggests the increases are mainly linked to long - term changes in sea surface temperatures.

«Due to climate change and GDP growth, by 2050 a one - in - fifty - years - flood might be one in 30 years so the frequency of such losses increases dramatically - almost doubling,» said co-author Brenden Jongman, researcher at the IVM Institute for Environmental Studies at VU University Amsterdam.

Tracking changes in Arctic cyclone activity through time, Vavrus calculated a statistically significant, though minor, increase in extreme Arctic cyclone frequency over the study period, with increases strongest near the Aleutian Islands and Iceland.

As the climate changes, studies have pointed to the idea that dry spells increase in frequency and wet spells increase in intensity, although there is not a consensus about what will happen to the Indian monsoon, Singh said.

The study demonstrates that 10 - year trends in channel capacity significantly impact long - term flooding frequency and that flood hazard is changing substantially at the majority of the sites studied.

Rather than look at the overall number of DNA changes, Harris focused on the frequency of changes in each kind of DNA base in the populations she studied.

Various bat species that emit high - frequency squeaks to detect prey and avoid obstacles share a high degree of variation in the FOXP2 gene, according to a new study, suggesting that genetic changes in the gene helped promote the evolution of this ability.

The study refutes the notion that climate change will increase the frequency of civil war in Africa as a result of food scarcity triggered by rising temperatures and drought.

THE STUDY «Climate Change and War Frequency in Eastern China Over the Last Millennium,» by David Zhang et al., published in the August 2007 issue of Human Ecology.

The study is the first to show that animal populations can adapt and already have adapted to higher temperatures and increased heat wave frequencies — two results of climate change — by means of evolutionary changes in their heat tolerance.

In a study published in the journal Cell on July 14, the researchers found that placing enhancers in different positions relative to their target genes resulted in dramatic changes in the frequency of the burstIn a study published in the journal Cell on July 14, the researchers found that placing enhancers in different positions relative to their target genes resulted in dramatic changes in the frequency of the burstin the journal Cell on July 14, the researchers found that placing enhancers in different positions relative to their target genes resulted in dramatic changes in the frequency of the burstin different positions relative to their target genes resulted in dramatic changes in the frequency of the burstin dramatic changes in the frequency of the burstin the frequency of the bursts.

However, in a subsequent analysis based on version 3 of the Hadley Model (HadCM3), Collins found that he could not detect a change in magnitude or frequency of ENSO as greenhouse gases increased, thus contradicting the results of his earlier study.

b shows regions that have experienced changes in the frequency of long fire weather seasons (> 1σ above historical mean) during the second half of the study period (1996 — 2013) compared with the number of events observed during the first half (1979 — 1996).

The new study, published in Science, is the first to make a global estimate of how both the frequency and severity of coral reef bleaching have changed over the last 40 years.

The study tracked changes in the sun by looking at previous solar cycles of change, such as Cycle 22 which lasted from the years 1986 to 1996, and found that the oscillation frequencies were confined to a thinner layer than those previous cycles.

Pilot study focusing on a region vulnerable to climate change Although the study highlights that long term changes in rainfall intensity are not always» man - made,» it does not necessarily mean that today's weather anomalies across the Indian Ocean rim countries and, in particular, their frequency, are not subject to human influence.

Right whales increase the amplitude, or the energy in their calls, directly as background noise increases without changing the calls» frequency, the study suggests.

In fact, controlled studies have shown that changing your meal frequency in any way — either eating more often or less — has no impact on energy expenditure or weight losIn fact, controlled studies have shown that changing your meal frequency in any way — either eating more often or less — has no impact on energy expenditure or weight losin any way — either eating more often or less — has no impact on energy expenditure or weight loss.

These studies, however, have focused on the frequency of all tropical storms and hurricanes (lumping the weak ones in with the strong ones) rather than a measure of changes in the intensity of the storms.

However, in a subsequent analysis based on version 3 of the Hadley Model (HadCM3), Collins found that he could not detect a change in magnitude or frequency of ENSO as greenhouse gases increased, thus contradicting the results of his earlier study.

My comprehensive study of Texas rain events of 20 + inches from 1948 - 2002 found no overall change in frequency over the period.

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.

In addition to assessing changes in ESL frequencies, the authors also highlighted the importance of the uncertainties inherent to the extreme value analysis, which have often been ignored in impact studies, and demonstrated how they can be accounted for alongside the uncertainties in SLR projectionIn addition to assessing changes in ESL frequencies, the authors also highlighted the importance of the uncertainties inherent to the extreme value analysis, which have often been ignored in impact studies, and demonstrated how they can be accounted for alongside the uncertainties in SLR projectionin ESL frequencies, the authors also highlighted the importance of the uncertainties inherent to the extreme value analysis, which have often been ignored in impact studies, and demonstrated how they can be accounted for alongside the uncertainties in SLR projectionin impact studies, and demonstrated how they can be accounted for alongside the uncertainties in SLR projectionin SLR projections.

There is some very limited information on possible changes in the frequency and intensity of tropical cyclones (Bengtsson et al., 1996; Henderson - Sellers et al., 1998; Krishnamurti et al., 1998; Knutson and Tuleya, 1999; Walsh and Ryan, 2000); and of mid-latitude cyclones (Schubert et al., 1998), but these studies are far from definitive (see Chapter 9, Section 9.3.6, and Chapter 10 for discussion on changes of extremes with changes in climate).

Multi-centennial-scale changes in East Asian typhoon frequency during the mid-Holocene This study reconstructs a record of typhoon frequency over the Korean Peninsula during the mid-Holocene using mineral components and diatom assemblages in deposits of Lagoon Hyangho, located on the east coast of the peninsula.

The study by Macias & Johnson (2008) provides not only evidence for the link between decadal - scale changes in the teleconnection patterns (e.g. the Pacific Decadal Oscillation (PDO) index) and the increased fire frequency in the late twentieth century but also an explanation of why the pattern of fire variability and fire - climate relationships changes at different time scales from centennial / decadal to interannual.....

Study shows China's severe weather patterns changing drastically since 1960 In one of the most comprehensive studies on trends in local severe weather patterns to date, an international team of researchers found that the frequency of hail storms, thunderstorms and high wind events has decreased by nearly 50 percent on average throughout China since 196In one of the most comprehensive studies on trends in local severe weather patterns to date, an international team of researchers found that the frequency of hail storms, thunderstorms and high wind events has decreased by nearly 50 percent on average throughout China since 196in local severe weather patterns to date, an international team of researchers found that the frequency of hail storms, thunderstorms and high wind events has decreased by nearly 50 percent on average throughout China since 1960.

Drought is expected to occur 20 - 40 percent more often in most of Australia over the coming decades.6, 18 If our heat - trapping emissions continue to rise at high rates, 19 more severe droughts are projected for eastern Australia in the first half of this century.6, 17 And droughts may occur up to 40 percent more often in southeast Australia by 2070.2 Unless we act now to curb global warming emissions, most regions of the country are expected to suffer exceptionally low soil moisture at almost double the frequency that they do now.3 Studies suggest that climate change is helping to weaken the trade winds over the Pacific Ocean, with the potential to change rainfall patterns in the region, including Australia.20, 21,16,22

Scientific studies show there is little if any linkage between hurricane frequency and severity with CO2 in the atmosphere, but an objective, common - sense, easy to understand analysis of hurricanes over the past 110 years, also demonstrates that climate change is not affecting the number or severity of hurricanes.

While models suggest that these changes will occur mid to late this century, Haig and colleagues» study suggests the decline in cyclone frequency has already begun.

«The authors write that North Pacific Decadal Variability (NPDV) «is a key component in predictability studies of both regional and global climate change,»... they emphasize that given the links between both the PDO and the NPGO with global climate, the accurate characterization and the degree of predictability of these two modes in coupled climate models is an important «open question in climate dynamics» that needs to be addressed... report that model - derived «temporal and spatial statistics of the North Pacific Ocean modes exhibit significant discrepancies from observations in their twentieth - century climate... conclude that «for implications on future climate change, the coupled climate models show no consensus on projected future changes in frequency of either the first or second leading pattern of North Pacific SST anomalies,» and they say that «the lack of a consensus in changes in either mode also affects confidence in projected changes in the overlying atmospheric circulation.»»

Climate change to have «little effect» on common landslides New study suggests the frequency of landslides in storm - affected areas will...

Published in Nature Climate Change, the paper surveys recent studies of climate change and extreme weather and finds «strong evidence» of a link between a warming world and the frequency and intensity of droughts, floods, and heatwaves — such as the one that turned winter into summer in thChange, the paper surveys recent studies of climate change and extreme weather and finds «strong evidence» of a link between a warming world and the frequency and intensity of droughts, floods, and heatwaves — such as the one that turned winter into summer in thchange and extreme weather and finds «strong evidence» of a link between a warming world and the frequency and intensity of droughts, floods, and heatwaves — such as the one that turned winter into summer in the U.S.

Scientists are interested in studying both the predictability and possible future changes in the frequency and intensity of such storms.

For example, our 2015 study projects an increase in tropical storm frequency in the Northeast Pacific and near Hawaii, and a decrease in category 4 - 5 storm days over much of the southern hemisphere basins and parts of the northwest Pacific basin — both at variance with the global - scale projected changes.

«Recent climate changes in this region may have had substantial impact on the carbon balance of Canadian boreal forests as a result of increased fire frequency, an unprecedented expansion of insect outbreaks, and widespread drought - induced tree mortality,» the authors write, but focused their study on drought.

Variations in HR occur due to the constant need of the heart to adapt to changing circumstances, and it is thought that loss of balance of the sympathetic and parasympathetic nervous systems causes an alteration to the structure of HRV.5 6 HRV, as a measure of nervous system balance, can therefore provide a quantification of physiological changes associated with mental health disorders, with many studies investigating these associations through a number of time domain, frequency domain and non-linear methods of quantifying HRV.7 — 9

As we describe in a forthcoming study in The Journal of Marriage and Family, the association between a non-traditional division of labor at home and couples» sexual satisfaction and frequency has changed dramatically over the past two decades.