Sentences with phrase «tropical precipitation increases»

Not exact matches

Climatic variability like precipitation changes or increase in extreme events such as storms and tropical cyclones is known to significantly modify the Earth's surface.

Here is an interesting report on the links between tropical temperatures and increased likelihood of extreme precipitation events:

If tropical glaciers continue to retreat despite an increase in precipitation, that will constitute a powerful case for the role of air temperature.

In Relationships between Water Vapor Path and Precipitation over the Tropical Oceans, Bretherton et al showed that although the Western Pacific warmer surface waters increased the water in the atmosphere compared to the Eastern Pacific, rainfall was lower in the Western Pacific compared to the Eastern Pacific for equal amounts of water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amounts.

Also, if radiative limits are preventing tropical precipitation, wouldn't that just increase the height of the convection cell, if it can't radiate heat as efficiently?

With increasing atmospheric moisture content (away from arid areas, also increasing) and the increasing tendency to bunched precipitation, mere tropical storms and depressions are ever more dangerous.

«Century of Data Shows Intensification of Water Cycle but No Increase in Storms or Floods Released: 3/15/2006 12:13:21 PM» (excerpt) A review of the findings from more than 100 peer - reviewed studies shows that although many aspects of the global water cycle have intensified, including precipitation and evaporation, this trend has not consistently resulted in an increase in the frequency or intensity of tropical storms or floods over the past Increase in Storms or Floods Released: 3/15/2006 12:13:21 PM» (excerpt) A review of the findings from more than 100 peer - reviewed studies shows that although many aspects of the global water cycle have intensified, including precipitation and evaporation, this trend has not consistently resulted in an increase in the frequency or intensity of tropical storms or floods over the past increase in the frequency or intensity of tropical storms or floods over the past century.

Nevertheless, the IPCC AR5 presents an outlook of increasing extreme precipitation in tropical cyclones making landfall (p. 106, Table TS.2), which is relevant for the flooding connected to Harvey.

If precipitation increases over the tropical oceans, more than evaporation increases, the sea water salinity could decrease.

Tropical land - surface precipitation measurements indicate that precipitation likely has increased by about 0.2 to 0.3 % / decade over the 20th century, but increases are not evident over the past few decades and the amount of tropical land (versus ocean) area for the latitudes 10 ° N to 10 ° S is relativelTropical land - surface precipitation measurements indicate that precipitation likely has increased by about 0.2 to 0.3 % / decade over the 20th century, but increases are not evident over the past few decades and the amount of tropical land (versus ocean) area for the latitudes 10 ° N to 10 ° S is relativeltropical land (versus ocean) area for the latitudes 10 ° N to 10 ° S is relatively small.

Nonetheless, direct measurements of precipitation and model reanalyses of inferred precipitation indicate that rainfall has also increased over large parts of the tropical oceans.

Our observational studies (Gray and Schwartz, 2010 and 2011) of the variations of outward radiation (IR + albedo) energy flux to space (ISCCP data) vs. tropical and global precipitation increase (from NCEP reanalysis data) indicates that there is not a reduction of global net radiation (IR + Albedo) to space which is associated with increased global or tropical - regional rainfall.

resulting in increased severity and / or intensity of heat waves, heavy precipitation events, droughts, tropical cyclones and extreme high sea levels [AR4 WGI SPM, p. 8],

On a tangent, the claim is made that tropical precipitation has increased, but the IPCC said in AR4 that it had decreased.

Although there is as yet no convincing evidence in the observed record of changes in tropical cyclone behaviour, a synthesis of the recent model results indicates that, for the future warmer climate, tropical cyclones will show increased peak wind speed and increased mean and peak precipitation intensities.

Under this scenario, peak precipitation rates are likely to increase by 25 % as a result of increases in maximum tropical cyclone wind intensities, which in turn cause higher storm surges.

Based on process understanding and agreement in 21st century projections, it is likely that the global frequency of occurrence of tropical cyclones will either decrease or remain essentially unchanged, concurrent with a likely increase in both global mean tropical cyclone maximum wind speed and precipitation rates.

[20] In the US southern climatic region (which extends from Mississippi through Texas) the number of daily heavy precipitation events has increased by 25 percent over the long - term average, and tropical cyclones contributed 48 percent of that increase.

The tropical zones will have much more precipitation and the increased atmospheric moisture content will serve to dampen extremes of temperature in these regions.

While there has been a recent increase in the number of landfalling US hurricanes, the increase in tropical cyclone - associated heavy events is much higher than would be expected from the pre-1994 association between the two, indicating that the upward trend in heavy precipitation events is due to an increase in the number of heavy precipitation events per system.

«For the high emissions scenario, it is likely that the frequency of hot days will increase by a factor of 10 in most regions of the world», said Thomas Stocker the other Co-chair of Working Group I. «Likewise, heavy precipitation will occur more often, and the wind speed of tropical cyclones will increase while their number will likely remain constant or decrease».

Global precipitation will increase, and the heaviest precipitation events are intensifying [1], but with regional differences: Wet regions such as the tropical rainforests will become rainier while semi-arid regions of the subtropics expand and become drier.

High latitude areas are tending to see more significant increases in rainfall, while precipitation has actually declined in many tropical areas.»

The model, forced with observed SSTs, generally reproduces the observed pattern of precipitation trends in the central and western tropical Pacific, with increases in convective precipitation of up to 0.8 mm / day / decade.

Many basins in the tropical Andes have experienced an increase in runoff in recent decades, while precipitation has remained almost constant or has shown a tendency to decrease (Coudrain et al., 2005).

This will help scientists explore, more accurately than is possible today, how rising temperatures, shifting precipitation patterns, increasing greenhouse gas levels, and other natural and human - induced changes affect tropical forests» influence on Earth's climate.

Tropical Pacific warming during El Niño increases the north - south temperature differential, strengthening / shifting the jet stream southward and bringing increased California winter precipitation.

http://www.sciencedaily.com/releases/2014/02/140202111055.htm «The satellite observations have shown that warming of the tropical Indian Ocean and tropical Western Pacific Ocean — with resulting increased precipitation and water vapor there — causes the opposite effect of cooling in the TTL region above the warming sea surface.

Tropical precipitation need increase by only a couple percent to achieve that effect.

They also suggest that there would be complex spatial patterns of response â $ «local warming in the lower stratosphere, increases in reflected solar radiation, decreases in outgoing longwave radiation, dynamical changes in the northern hemisphere winter circulation, decreases in tropical precipitation etc..

Correcting for precipitation biases in the tropical western Pacific using an emergent constraint methodology, however, reduces the magnitude of these increases by ∼ 50 %.

Scientists at the Indian Institute of Tropical Meteorology (IITM) in Pashan, Pune, in a research paper published in Climate Dynamics last May, had dwelt upon the increase in frequency of winter precipitation (snow or rain) owing to the western disturbances (WDs).

9.3.1 Global Mean Response 9.3.1.1 1 % / yr CO2 increase (CMIP2) experiments 9.3.1.2 Projections of future climate from forcing scenario experiments (IS92a) 9.3.1.3 Marker scenario experiments (SRES) 9.3.2 Patterns of Future Climate Change 9.3.2.1 Summary 9.3.3 Range of Temperature Response to SRES Emission Scenarios 9.3.3.1 Implications for temperature of stabilisation of greenhouse gases 9.3.4 Factors that Contribute to the Response 9.3.4.1 Climate sensitivity 9.3.4.2 The role of climate sensitivity and ocean heat uptake 9.3.4.3 Thermohaline circulation changes 9.3.4.4 Time - scales of response 9.3.5 Changes in Variability 9.3.5.1 Intra-seasonal variability 9.3.5.2 Interannual variability 9.3.5.3 Decadal and longer time - scale variability 9.3.5.4 Summary 9.3.6 Changes of Extreme Events 9.3.6.1 Temperature 9.3.6.2 Precipitation and convection 9.3.6.3 Extra-tropical storms 9.3.6.4 Tropical cyclones 9.3.6.5 Commentary on changes in extremes of weather and climate 9.3.6.6 Conclusions

The FLOR model has been used extensively to understand predictability, change and mechanisms of tropical cyclones (Vecchi et al. 2014), Arctic sea ice (Msadek et al. 2014), precipitation and temperature over land (Jia et al. 2015), drought (Delworth et al., 2015), extratropical storms (Yang et al. 2015), the Great Plains Low Level Jet (Krishnamurthy et al. 2015), and the global response to increasing greenhouse gases (Winton et al. 2014).

According to the Intergovernmental Panel on Climate Change's June 2008 report «Climate Change and Water» precipitation will very likely, which the IPCC defines as more than a 90 percent probability, increase in tropical and high - latitude regions and will likely (more than 66 percent probability) decrease in subtropical and low - to mid-latitude regions.

Although tropical precipitation change remains uncertain, nearly all models from the Coupled Model Intercomparison Project Phase 5 predict a strengthening zonal precipitation asymmetry by 2100, with relative increases over Asian and African tropical forests and decreases over South American forests.

Based on our published results and as well as those of other modeling groups, we conclude that at the global scale: a future increase in tropical cyclone precipitation rates is likely; an increase in tropical cyclone intensity is likely; an increase in very intense (category 4 and 5) tropical cyclones is more likely than not; and there is medium confidence in a decrease in the frequency of weaker tropical cyclones.

Key findings from these experiments include: fewer tropical cyclones globally in a warmer late - twenty - first - century climate (Figure 8), but also an increase in average cyclone intensity, the number and occurrence days of very intense category 4 and 5 storms in most basins (Figure 9) and in tropical cyclone precipitation rates (Figure 10).

Increasing zonal asymmetry in tropical precipitation is projected by 2100, with increases over Asian and African forests and decreases over South American forests.

This event is associated with cold and dry conditions increasing with latitude in the North, temperature and precipitation influences on tropical and boreal wetlands, Siberian - like winters in much of the North Atlantic, weakening of monsoon intensity, and southward displacement of tropical rainfall patterns.

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.