Sentences with phrase «changes in the frequency distribution»

Dramatic changes in the frequency distribution of lifetime maximum intensity (LMI) have occurred in the North Atlantic, while smaller changes are evident in the South Pacific and South Indian Oceans, and the stronger hurricanes in all of these regions have become more intense.

Not exact matches

«All these different modes react differently to the distribution of mass, so we can extract the changes in mode frequencies and use it to calculate where the mass is concentrated within the channel,» Olcum says.

They point to direct effects resulting from rising temperatures and changes in the frequency and strength of storms, floods, droughts, and heat - waves — as well as to less direct impacts, such as changes in crop yields, the burden and distribution of infectious disease, and climate - induced population displacement and violent conflict.

• increases in malnutrition and consequent disorders, with implications for child growth and development; • increased deaths, disease and injury due to heat waves, floods, storms, fires and droughts; • the increased burden of diarrheal disease; • the increased frequency of cardio - respiratory diseases due to higher concentrations of ground - level ozone related to climate change; and, • the altered spatial distribution of some infectious disease vectors.

There are fast feedback changes in some things (e.g. sea ice), and longer - continuing changes in other things (e.g. the Antarctic cap ice; ocean circulation; plankton species frequency and distribution; ocean pH; terrestrial rainfall and erosion).

A high occurrence of new record - events is an indication of a change in the «tails» of the frequency distribution and thus that values that in the past were considered extreme are becoming more common.

However, simple statistical reasoning indicates that substantial changes in the frequency of extreme events (and in the maximum feasible extreme, e.g., the maximum possible 24 - hour rainfall at a specific location) can result from a relatively small shift of the distribution of a weather or climate variable.

Box TS.5, Figure 1 shows a schematic of a such a PDF and illustrates the effect a small shift (corresponding to a small change in the average or centre of the distribution) can have on the frequency of extremes at either end of the distribution.

Heat, flood and drought - related mortality and morbidity may increase; changes in the distribution of plant species and animals are likely to contribute to changing ranges of infectious diseases and allergic disorders; higher concentrations of ground - level ozone and particulate matter in urban areas may increase the frequency of cardio - respiratory and cardio - vascular diseases.

While seemingly incongruous, scientists are predicting both more droughts and flooding for the southeastern United States, noting that the region has already experienced changes in the frequency, distribution, and intensity of precipitation, a trend that is expected to continue.

El Niño's center of action appears to be shifting from the eastern to the central Pacific, which in turn is affecting the distribution and frequency of weather events.7 However, due to the wide natural fluctuations within circulation patterns, it is difficult to attribute recent changes solely to human activity.

Climate change is expected to shift frequency statistics for weather and climate events, as illustrated in Figure 2.10, in ways that affect the likelihood of extreme events on the tails of the distribution, either the high side («extremely hot» for example) or the low side («extremely cold»).

The results of Donat and Alexander (2012) lend some credibility to Tamino's comments regarding a lesser change in temperature variance, although they find that an increase in skewness (asymmetry) of the temperature distribution has probably contributed to the increased frequency of extreme heat events (Figure 5).

To assess exposure of different terrestrial ecosystems to projected changes in climate suitability (Fig 4), we calculated the mean and frequency distribution of changes in suitable plant growing days (Fig 2A — 2C and 2G) for cells dominated by each of 14 land - cover types.

«This uncertainty must be reflected in micro-scale analyses of local and regional water management issues, particularly in «hot spots» that can now be identified by overlaying significant changes in drought frequencies over geographically explicit distributions of water - sensitive sectors and population centres.»

Changes over time were determined in the frequency of EC provision, choice of EC agent, frequency of EC use by age group, repeat use and geographic distribution of EC prescription for the pre - and post-policy periods.