Sentences with phrase «precipitation over»

Hurricanes and tropical storms drop a lot of precipitation over an extended period of time, and this often leads to widespread flooding.

a: on average the Amazon and Congo forests win this war: annual precipitation over forests is two to three times larger than the precipitation over the Atlantic Ocean at the same latitude.

Nevertheless, most El Niño winters are mild over western Canada and parts of the northern central United States, and wet with anomalous precipitation over the southern United States from Texas to Florida.

In weather terms, you can't predict the exact route a storm will take but the average temperature and precipitation over the whole region is the same regardless of the route.

The study, based on a computer model used to simulate rainfall under different land - use conditions, found that cutting down tropical forests in West Africa reduces precipitation over neighboring forest areas by about 50 percent due to increased temperatures over cropland areas.

(compare the red and black lines) As a result, precipitation over the ocean in summer is lower than it is in winter, despite the temperature in summer is higher.

A radical meteorology theory argues that loss of forest, both in temperate and tropical regions, will lead to less precipitation over land.

Both in wet and dry seasons precipitation over Australia is four to six times lower than over the ocean.

According to them it is condensation from forests, and not temperature differences, that drives the winds which bring precipitation over land.

Druyan, L.M., M. Fulakeza, and P. Lonergan, 2007: The spatial variability of regional model simulated June - September mean precipitation over West Africa.

Those shifts, in turn, led to changes in atmospheric circulation and precipitation over adjacent continents.

Indeed, rainfall data reveal significant increases of heavy precipitation over much of Northern Hemisphere land and in the tropics (27) and attribution studies link this intensification of rainfall and floods to human - made global warming (28 ⇓ — 30).

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.

5 decades are consistent with the reported increasing trends in cloud cover and precipitation over many land areas and support the notion that the hydrologic cycle has intensified.»

DOC file says:» In this study, we investigate the weekly to monthly predictability of clouds and precipitation over the LSA - East, defined roughly by 33 — 430N latitude and 78 — 890W longitude...»

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.

A drought / deluge / drought sigmoid is much less advantageous than equipartition of an equal amount of precipitation over time, in particular if we do not know the lengths of droughts and deluges to expect.

Anthropogenic influences have contributed to observed increases in atmospheric moisture content in the atmosphere (medium confidence), to global - scale changes in precipitation patterns over land (medium confidence), to intensification of heavy precipitation over land regions where data are sufficient (medium confidence), and to changes in surface and subsurface ocean salinity (very likely).

«The recent increase in atmospheric methane is due to surface warming of Arctic and mid-latitude wetlands and to a lesser extent increased precipitation over parts of Africa,» added Palmer.

These metrics emphasise fields between 30S and 30N including 2 m air temperature (Willmott and Matsuura 2000), vertically averaged air temperature (ERA40, Uppala et al. 2005), latent heat fluxes of the ocean (Yu et al. 2008), zonal winds at 300 mb (ERA40, Uppala et al. 2005), longwave and shortwave cloud forcing (CERES2, Loeb et al. 2009), precipitation over land and ocean (GPCP, Adler et al. 2003), sea level pressure (ERA40, Uppala et al. 2005), vertically averaged relative humidity (ERA40, Uppala et al. 2005).

Trying to figure out the increasing frequency of heavy precipitation over western Himalayas, the scientists said their analysis suggested that pronounced warming over the Tibetan plateau in recent decades due to elevation dependency of climatic warming signal favoured enhancement of meridianal temperature gradients.

The humidity of the Arctic atmosphere increased with this, and caused precipitation over Eurasia.

The studies indicate that the observed pattern of mid-tropospheric warming in recent decades over west central Asia led to an increase in instability of the western winds thereby increasing WDs leading to a higher propensity for heavy precipitation over the western Himalayas.

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).

Winter and early spring precipitation over western Himalayas primarily from WDs is vital to replenishment of water resources, winter crops, and flora and fauna of the region.

''... 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.»

Wang, J. & Zhang, X. Downscaling and projection of winter extreme daily precipitation over North America.

The average precipitation over the globe is about 1 m annually, so there must be a rapid turnover of water in the air; the average water molecule spends about 9 days in the air before precipitating back to the surface.

Zilli M. T., L. M. V. Carvalho, B. Liebmann and M. A. S. Dias (April 2017): A comprehensive analysis of trends in extreme precipitation over southeastern coast of Brazil.

«Our team inspected the conditions (Wednesday) and observed that the mild weather and precipitation over the last days have deteriorated the Rideau Canada Skateway's ice faster than expected,» the NCC said in a statement.

A radical meteorology theory argues that loss of forest, both in temperate and tropical regions, will lead to less precipitation over...

First published in 2007 by two Russian physicists, Victor Gorshkov and Anastassia Makarieva, the still little - known biotic pump theory postulates that forests are the driving force behind precipitation over land masses.

Monitoring precipitation over the terrestrial Arctic drainage: data requirements, shortcomings and applications of atmospheric reanalysis.

By contrast, evaporation exceeds precipitation over the subtropical high pressures in both hemispheres.

Select the «Days of Precipitation over 1»» layer to see how many more deluges your area could see.

The monsoonal precipitation in Mexico and Central America is projected to decrease in association with increasing precipitation over the eastern equatorial Pacific that affects Walker Circulation and local Hadley Circulation changes (Figure 10.9).

If you now look at the boreal zone in the NH (Fig. 6b) summer precipitation remains constant and exceeds the oceanic precipitation over seven thousand kilometers.

The key to this model lies in the distribution of precipitation on Earth, with maxima in the tropics and in high latitudes, so that the Arctic receives an excess of precipitation over evaporation of about one third, which is associated with the permanent presence of the low salinity surface water mass of the Arctic Ocean, separated by a halocline from the saltier Atlantic water below.

We find that the reported discrepancy can be traced to two main issues: (1) unforced internal climate variability strongly affects local wetness and dryness trends and can obscure underlying agreement with WWDD, and (2) dry land regions are not constrained to become drier by enhanced moisture divergence since evaporation can not exceed precipitation over multiannual time scales.

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

The principle difference over Europe is in the amount of precipitation over the north - east of the continent, where GPCP provides systematically higher values than either GPCC or E-OBS, and ERA - Interim gives values in between.

It's a mode of natural variation in the tropical eastern Pacific ocean which is indicated by sea surface temperature in that region, as well as patterns of atmospheric pressure, surface winds over the ocean, even precipitation over a much larger region.

In this study by PSD and GSD, climatologists want to assess the impact of a warmer Gulf of Mexico (predicted by global climate models) and determine the impact on warm season (July) precipitation over the central US.

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.

The best way to envision the relation between ENSO and precipitation over East Africa is to regard the Indian Ocean as a mirror of the Pacific Ocean sea surface temperature anomalies [much like the Western Hemisphere Warm Pool creates such a SST mirror with the Atlantic Ocean too]: during a La Niña episode, waters in the eastern Pacific are relatively cool as strong trade winds blow the tropically Sun - warmed waters far towards the west.

Masson - Delmotte et al. (2005) highlight an abrupt drop in GRIP deuterium excess at 4.5 ka, and suggest that this change in isotopes of precipitation over central Greenland may have recorded a shift in regional hydroclimate.

There has been increased occurrence of severe hot weather events over much of the US and increases in heavy precipitation over much of North America (high confidence).

A statistical topographic model for mapping climatological precipitation over mountainous terrain.

Even in light of the complexities and uncertainties, Hulme et al. (2001) state that a «warming climate will nevertheless place additional stresses on water resources [in Africa], whether or not future rainfall is significantly altered» and they project reduced precipitation over Tunisia.

Estimate of heat released by additional 5 cm of precipitation over six million sq km of ice extent = 9 Estimate for additional 10 cm = 18