Sentences with phrase «in precipitation over»

Vuille, M., R.S. Bradley, R. Healy, M. Werner, D.R. Hardy, L.G. Thompson, and F. Keimig, 2003: Modeling δ18O in precipitation over the tropical Americas: 1.

Those who like to check under the hood and kick the tires will find a tiny increase in precipitation over the 240 - year record, with an interesting smoothing of precipitation through the year - that is, there's been a little more rain in the drier December through May half and a little less in the soggier June through November half of the year.

Even though some results are controversial, a consistent picture has emerged for the mid-Holocene, for which simulations produce reduced variability in precipitation over most ocean regions in the tropics (Liu et al., 2000; Braconnot et al., 2004; Zhao et al., 2005).

''... report that «most trends exhibited no clear precipitation change,» noting that «global changes in precipitation over the Earth's land mass excluding Antarctica relative to 1961 - 90 were estimated to be: -1.2 ± 1.7, 2.6 ± 2.5 and -5.4 ± 8.1 percent per century for the periods 1850 - 2000, 1900 - 2000 and 1950 - 2000, respectively.»

ERA - Interim exhibits a marked rise over time in precipitation over South America.

There is an opposite shift in ITCZ location with Amazon forest loss: the ITCZ band shifts slightly northward leading to increases in precipitation over Asia's southeastern tropics, and declines in NA's Pacific Northwest.

The climate projections predicted larger increases in temperature but smaller increases in precipitation over the 21st century compared with the 20th.

Decreases in precipitation over many subtropical areas are evident in the multi-model ensemble mean, and consistency in the sign of change among the models is often high (Wang, 2005), particularly in some regions like the tropical Central American - Caribbean (Neelin et al., 2006).

If we take the largest decline (1,500 km3 / year) in Arctic ice cover of the last decades together with the increase in precipitation over the Arctic (500 km3 / year), then this is completely dwarfed by the 115,000 - 230,000 km3 in one year which is supposed to have slowed down (not even stopped) the THC.

During an El Niño, satellites often observe a shift in precipitation over the ocean, specifically an increase in rain over the eastern Pacific, said Huffman.

Not exact matches

Indeed, Arctic change in the last two decades has been profound — not just dwindling sea ice, but also noticeably increased precipitation, and thus snow cover, over Eurasia.

Boersma and Rebstock looked at the cause of every recorded chick mortality in an Argentinian colony of Magellanic penguins, over a nearly 30 - year period, and compared these with changes in temperature and precipitation over the same time.

Variations in the thickness of the layers is determined by a combination of the amount of water seeping into the cave and the concentration of carbon dioxide in the cave's atmosphere so, when conditions are right, they can provide a measure of how the amount of precipitation above the cave varies over time.

Press the delete key over the tropical forests, and entire continents see dramatic reductions in their precipitation and sudden rises in temperature.

«If we look at precipitation events over the long term, there is an increase in frequency of extremes.

The Midwest has seen a 37 percent increase in the amount of rain falling in heavy precipitation events since the late 1950s, the second - highest increase in the U.S. over that period.

«We expect the first heavy precipitation events with a clear global warming signal will appear during winters in Russia, Canada and northern Europe over the next 10 - 30 years,» said co-author Dr Ed Hawkins from the National Centre for Atmospheric Science at the University of Reading, UK.

Over the years, precipitation inevitably seeps in.

«This cooling reduced precipitation over Africa, and in combination with a range of other complex climate feedback mechanisms tipped the humid system towards aridification,» explains the first author of the study, James Collins from Helmholtz Centre Potsdam — GFZ German Research Centre for Geosciences and Alfred Wegener Institute — Helmholtz Center for Polar and Marine Research (AWI) in Bremerhaven.

Fueled by tropical moisture drawn north and pinned over the area by a stalled weather pattern, the amount of precipitation between Sept. 9 and 15 in some areas was more than what typically falls in an entire year.

«Some fungal outbreaks over the past couple of decades, such as Dothistroma needle blight, could likely have been anticipated by tracking how temperature and precipitation were changing together,» said Mahony, who has worked as a forester in British Columbia for 10 years and has witnessed the impacts of climate change on the ground.

Because the models predict little average precipitation increase nationwide over this period, the product of CAPE and precipitation gives about a 12 percent rise in cloud - to - ground lightning strikes per degree in the contiguous U.S., or a roughly 50 percent increase by 2100 if Earth sees the expected 4 - degree Celsius increase (7 degrees Fahrenheit) in temperature.

Researchers from the University of California Irvine have shown that a phenomenon known as the Atlantic Multidecadal Oscillation (AMO)-- a natural pattern of variation in North Atlantic sea surface temperatures that switches between a positive and negative phase every 60 - 70 years — can affect an atmospheric circulation pattern, known as the North Atlantic Oscillation (NAO), that influences the temperature and precipitation over the Northern Hemisphere in winter.

Recent models indicate that the rain comes in twoforms: a constant, light drizzle over most of the surface, adding up totwo inches or so of precipitation per year, and occasional cloudburststhat carve out river channels and fill the lakes, only to evaporateagain when temperatures rise.

In this region, the average temperature has risen 1.5 degrees Celsius (2.7 degrees Fahrenheit) in the last 50 years and the average precipitation has risen by 2.1 inches per year over the past 25 yearIn this region, the average temperature has risen 1.5 degrees Celsius (2.7 degrees Fahrenheit) in the last 50 years and the average precipitation has risen by 2.1 inches per year over the past 25 yearin the last 50 years and the average precipitation has risen by 2.1 inches per year over the past 25 years.

In its altered state, the jet stream traveled farther south than usual, lessening precipitation over the central U.S. and compounding the drought conditions.

In terms of precipitation, a decrease was observed in annual precipitation over the period as a whole, although these trends «are not significant.&raquIn terms of precipitation, a decrease was observed in annual precipitation over the period as a whole, although these trends «are not significant.&raquin annual precipitation over the period as a whole, although these trends «are not significant.»

Over Christmas and New Year's Day, heavy precipitation fell over the U.S. Southeast, particularly in Georgia, Tennessee, Virginia, North Carolina and Alabama, which experienced flash floodOver Christmas and New Year's Day, heavy precipitation fell over the U.S. Southeast, particularly in Georgia, Tennessee, Virginia, North Carolina and Alabama, which experienced flash floodover the U.S. Southeast, particularly in Georgia, Tennessee, Virginia, North Carolina and Alabama, which experienced flash flooding.

In late 2010 and early 2011, the continent Down Under received about twice its normal complement of rain, thanks in large part to unusually warm sea - surface temperatures just north of Australia and a particularly strong La Niña — in essence, combining a source of warm humid air with the weather patterns that steered the moisture over the continent where it condensed and fell as precipitatioIn late 2010 and early 2011, the continent Down Under received about twice its normal complement of rain, thanks in large part to unusually warm sea - surface temperatures just north of Australia and a particularly strong La Niña — in essence, combining a source of warm humid air with the weather patterns that steered the moisture over the continent where it condensed and fell as precipitatioin large part to unusually warm sea - surface temperatures just north of Australia and a particularly strong La Niña — in essence, combining a source of warm humid air with the weather patterns that steered the moisture over the continent where it condensed and fell as precipitatioin essence, combining a source of warm humid air with the weather patterns that steered the moisture over the continent where it condensed and fell as precipitation.

The study examined what is likely to be seen in terms of precipitation, snowpack accumulation and water runoff over the next century, versus the same data for the years from 1976 and 2005.

When nitrogen isotopes change in response to variation in winter precipitation over the past 2,000 years, this signature is transferred from the soil to plant leaves to insect to bat and ultimately guano.

The phenomenon lowered precipitation over the oceans in the last decade, dampening the warming signal, they said.

In Germany, where the rains fell over a shorter period, they examined the one - day maximum precipitation for the hardest hit region, while for France, where rains were longer - lasting and more widespread, they looked at the three - day averaged precipitation for the Seine and Loire river valleys.

An increased risk of intense, short - duration rainfall events in mid-latitude regions has been predicted consistently for well over a decade as part of the pattern of human influence on precipitation.

The westerlies in the Northern Hemisphere, which increased from the 1960s to the 1990s but which have since returned to about normal as part of NAO and NAM changes, alter the flow from oceans to continents and are a major cause of the observed changes in winter storm tracks and related patterns of precipitation and temperature anomalies, especially over Europe.

At local scales and over shorter periods, annual streamflow responds to seasonal changes in climate variables (e.g., temperature, precipitation) and related processes such as evapotranspiration.

Staying on the Southern Hemisphere, a research team led by Sue Rosier, looked at extreme precipitation over the North Island of New Zealand that led to severe flooding in July 2014.

Over North America, El Niño tends to strengthen the subtropical jet stream during the winter months, which tilts the odds for shifts in temperature and precipitation across much of the country.

A recent study of instrumental time series revealed NAO [North Atlantic Oscillation] as main factor for a strong relation between winter temperature, precipitation and river discharge in central Norway over the past 50 years.

«The proxy records used in this study appear to contradict other studies that have used direct observations of precipitation from rain gauges... All else being equal, I would trust direct rainfall measurements over proxy records.»

Despite no historical changes in average annual precipitation between 1950 and 2015, there have been changes in average seasonal precipitation over the same period.

Slow - moving weather systems are another factor in heavy precipitation, as a slower - moving system can produce more rain over particular area.

«We show that at the present - day warming of 0.85 °C about 18 % of the moderate daily precipitation extremes over land are attributable to the observed temperature increase since pre-industrial times, which in turn primarily results from human influence,» the research team said.

Other factors contributing to the recent regional rapid warming over the Antarctic Peninsula include decreased sea ice in the Bellingshausen Sea, resulting in warmer air temperatures, and decreasing precipitation over the south western peninsula [10, 11].

The AMO is likely to be a driver of multi-decadal variations in Sahel droughts, precipitation in the Caribbean, summer climate of both North America and Europe, sea ice concentration in the Greenland Sea and sea level pressure over the southern USA, the North Atlantic and southern Europe (e.g., Venegas and Mysak, 2000; Goldenberg et al., 2001; Sutton and Hodson, 2005; Trenberth and Shea, 2006).

This document provides basic information on projected future climate change effects (changes in temperature, precipitation, storm activity and sea level rise) over the near term, mid-century and end - of - century.

Half the increase in urban land across the world over the next 20 years will occur in Asia, with the most extensive change expected to take place in India and China Urban areas modify their local and regional climate through the urban heat island effect and by altering precipitation patterns, which together will have significant impacts on net primary production, ecos...

The average probability that some form of precipitation will be observed in any given day is only 2 %, with little variation over the month.

The wettest month in the dry season is January, when an average of 49 mm of rain falls over the course of five wet days, followed by December which sees 36 mm of precipitation falling over five wet days.

There are often large variation in the temperature and precipitation statistics over short distances because the local climatic characteristics are affected by the local geography.