Sentences with phrase «storm patterns shift»

Wind and storm patterns shift in relatively predictable ways.

Not exact matches

Glaser et al. show that dust deposition mediated by frequent tropical storms was an important source of nutrients for the Everglades until about 2800 years ago, when a climatic shift in the tropical Atlantic and Gulf of Mexico led to weather patterns that sharply decreased the level of dust inputs and led to a drier climate and a gradual loss of soil phosphorus, carbon, and nitrogen.

Those patterns matched three rather dire climate model predictions: that storm tracks — the paths along which cyclones travel in the Northern and Southern hemispheres — would shift poleward; that subtropical dry regions would expand, and that the tops of the highest clouds would get even higher.

This shifts around wind patterns there and has a domino effect through the atmosphere; over the U.S., it causes a shift in the position of the wintertime jet stream, which controls how storms move across the country.

The sleepy Atlantic Ocean hurricane season ended yesterday, with the development of a Pacific Ocean El Niño condition predictably shifting winds into a pattern that stifles Atlantic storms.

Making analysis tougher, any trends in annual counts of tornadoes are clearly a function of shifting patterns of monitoring and reporting, not actual changes in the numbers of funnel clouds, according to several experts at the National Severe Storms Laboratory.

Its findings suggest that changing storm patterns and the ensuing droughts are due to a southern shift in the Hadley cell, the large - scale pattern of atmospheric circulation that transports heat from the tropics to the subtropics.

Also, I've no doubt there were tremendous storms in the past, especially during times of climate shifts as cold climate patterns clash with warm climate patterns.

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.

Current work1 has provided evidence of the increase in frequency and intensity of winter storms, with the storm tracks shifting poleward, 2,3 but some areas have experienced a decrease in winter storm frequency.4 Although there are some indications of increased blocking (a large - scale pressure pattern with little or no movement) of the wintertime circulation of the Northern Hemisphere, 5 the assessment and attribution of trends in blocking remain an active research area.6 Some recent research has provided insight into the connection of global warming to tornadoes and severe thunderstorms.7, 8

The regional pattern of fewer snowstorms in the southern United States and more in the North corresponds to a similar northward shift of cold - season storms in the entire Northern Hemisphere over the past 50 years.

Some meteorologists suspect unseasonal snow storms off the east coast of America in 2010 were partly caused by Arctic warming shifting wind patterns.

It is also expected that Nigeria will experience temperature shifts, changing rainfall patterns, storms and sea - level rise.

Though there can be significant differences in regional surface impacts between one SSW event and another, the typical pattern includes changes in sea level pressure resembling the negative phase of the North Atlantic Oscillation (NAO) / Arctic Oscillation (AO), (representing a southward shift in the Atlantic storm track), wetter than average conditions for much of Europe, cold air outbreaks throughout the mid-latitudes, and warmer than average conditions in eastern Canada and subtropical Asia (see figure below, left panel).

This seesaw exchange of air masses shifts temperature conditions and storm patterns throughout the region.

Most climatologists believe that if temperatures rise more than another 1 degree C by 2100, conditions on the planet could become radically different and disruptive, including sharp shifts in precipitation patterns, more severe storms and droughts, the disappearance of the Arctic ice cap in summer, Greenland ice sheet instability, and much higher sea levels.

Climate change may cause significant shifts in current weather patterns and increase the severity and possibly the frequency of major storms (NRC 2002).

An associated shift in the storm track makes some regions wetter and some − often nearby − drier, making for complex patterns of change.

If anything, the dust storm in Arizona and the attention it brought to climate change and shifting weather patterns has helped to highlight the complexity of our planet, and the many factors that come together to create, or avoid, one giant haboob.

Increased and / or unpredictable severe storm activity and weather pattern changes including seasonal shifts.

In particular, from my reading of the (stolen) e-mails, it looked like the problem was that there are conflicting studies on exactly what is going on with storms regarding whether they were getting stronger or weaker, so rather than saying something that potentially inaccurate (that storms were getting stronger, since there were apparently some studies suggesting that they were getting less numerous as the wind patterns shifted) or verbose (describing the whole situation about what differing studies have to say about storms) they decided to simply drop mentioning what was happening to storms altogether and instead focus the bullet point on the part that they were confident about, namely that particular wind patterns were changing.

From acute, climate - related events like storms and floods to long - term shifts in weather patterns and sea level patterns, the impacts only become clear through an understanding of who is at risk, what the risks are to people rather than just to places and how these risks vary within and across populations.

ALEXANDRIA, Va., May 25, 2011 — As the United States experiences and recovers from tumultuous weather, with parts of the South and Midwest reeling from the destruction of fierce recent tornados and flooding, forecasters predict shifting weather patterns and many named storms as hurricane season officially begins next week on June 1.