Sentences with phrase «mean precipitation changes»

Models disagree on annual mean precipitation changes in the NA monsoon region.

«The sign of mean precipitation changes across the southern U.S. is inconsistent among models.

«Looking at changes in the number of dry days per year is a new way of understanding how climate change will affect us that goes beyond just annual or seasonal mean precipitation changes, and allows us to better adapt to and mitigate the impacts of local hydrological changes,» said Polade, a postdoctoral researcher who works with Scripps climate scientists Dan Cayan, David Pierce, Alexander Gershunov, and Michael Dettinger, who are co-authors of the study.

Not exact matches

Widening of the tropics would also probably be associated with poleward movement of major extratropical climate zones due to changes in the position of jet streams, storm tracks, mean position of high and low pressure systems, and associated precipitation regimes.

The lakes they examined are so - called closed - basin lakes, which have rivers feeding into them, but not draining them, meaning that changes in lake levels are governed solely by precipitation and evaporation.

This does not necessarily mean the mechanisms driving precipitation changes in climate models are wrong.

has decreased in winter, but no significant change in annual mean precipitation potentially because of very slight increases in spring and fall precipitation; precipitation is projected to increase across Montana, primarily in spring; slight decrease in summer precipitation; variability of precipitation year - to - year projected to increase

Her work focuses on the causes of change in mean and extreme temperature and precipitation.

For birds and amphibians, we considered exposure to five components of climate change, namely changes in mean temperature, temperature variability, mean precipitation, precipitation variability and sea level rise.

Data analyses have found an increase of drought intensity at many locations [130]--[131] The magnitude of change depends on the drought index employed [132], but soil moisture provides a good means to separate the effect of shifting seasonal precipitation and confirms an overall drought intensification [37].

Here's the problem forests and forest managers face under climate change: Increasing global mean temperatures, changes in precipitation, and the hydrologic cycle are expected to lead to temperature and drought stress for many tree species.

Statewide precipitation has decreased in winter (0.14 inches / decade -LSB--0.36 cm / decade]-RRB- since 1950, but no significant change has occurred in annual mean precipitation, probably because of very slight increases in spring and fall precipitation.

When they say dynamic they don't just means changes in precipitation or temperature, but also changes in pressure and humidity.

I am interpreting that to mean that there is a trend towards increasing annual 1 - day extreme precipitation — but I am not sure how to quantify that change.

«Thus changes in the pattern of R could directly influence that of precipitation, regardless of any impact on the global mean radiation budget.»

A reduction in the precipitation area implies higher mean precipitation intensity, and may be linked to changes in the atmospheric overturning presented above.

They discussed the effect of variables being non-iid on the extreme value analysis, and after taking that into account, propose that changes in extreme precipitation are likely to be larger than the corresponding changes in annual mean precipitation under a global warming.

Fractional changes in local precipitation are expected to be larger than those in the global mean.

What I mean by climate change One definition of a climate change is a shift in the pdf describing the temperature, precipitation, or some other variable.

Further, precipitation over land is a small fraction of the total, so there's a lot of room for changes in precip there without altering the result on the global mean.

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).

The net change over land accounts for 24 % of the global mean increase in precipitation, a little less than the areal proportion of land (29 %).

The global map of the A1B 2080 to 2099 change in annual mean precipitation is shown in Figure 10.12, along with other hydrological quantities from the multi-model ensemble.

In GCMs, the global mean evaporation changes closely balance the precipitation change, but not locally because of changes in the atmospheric transport of water vapour.

As for how this could be — and in light of the findings of the references listed above — Rankl et al. reasoned that «considering increasing precipitation in winter and decreasing summer mean and minimum temperatures across the upper Indus Basin since the 1960s,» plus the «short response times of small glaciers,» it is only logical to conclude that these facts «suggest a shift from negative to balanced or positive mass budgets in the 1980s or 1990s or even earlier, induced by changing climatic conditions since the 1960s.»

At the same time, precipitation patterns are also changing all over the planet; in the Arctic, that means more erratic snowfall.

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.

Climate change also means more severe storms, increased precipitation, deepening periodic droughts, and other detrimental impacts.

Bonfils, C.J.W., B.D. Santer, T.J. Phillips, K. Marvel, L.R. Leung, C. Doutriaux, and A. Capotondi, 2015: Relative contributions of mean - state shifts and ENSO - driven variability to precipitation changes in a warming climate.

A comparison of the long term and short term mean for monthly precipitation and temperature from the eight NOAA State of Washington Division 5 Weather Stations (Cascade Mountains) illustrates three important climate changes in the North Cascades for the 1984 - 1994 period.

Understanding how the global - mean precipitation rate will change in response to a climate forcing is a useful thing to know.

Overall, the scientists found that precipitation extremes of different kinds will occur, with only small changes in the mean precipitation across the rainy season.

Given the conservative nature of the shape parameter, it is possible to illustrate the relationships between changes in the mean total precipitation, the probability of precipitation (which is proportional to the number of days with precipitation), and changes in heavy precipitation (Figure 2.34).

«What that means is that it's actually possible in many cases for the response of precipitation to climate change to be quite different from place to place.»

The NAO's prominent upward trend from the 1950s to the 1990s caused large regional changes in air temperature, precipitation, wind and storminess, with accompanying impacts on marine and terrestrial ecosystems, and contributed to the accelerated rise in global mean surface temperature (e.g., Hurrell 1996; Ottersen et al. 2001; Thompson et al. 2000; Visbeck et al. 2003; Stenseth et al. 2003).

Increase in heavy precipitation events in mid-latitudes, disproportionate with changes in mean (1951 - 2003)[AR4 3.8.2.2]

A sentence in Chapter 13 of the 2007 IPCC Fourth Assessment Report on Impacts, Adaptation and Vulnerability states: «Up to 40 percent of the Amazonian forests could react drastically to even a slight reduction in precipitation; this means that the tropical vegetation, hydrology and climate system in South America could change very rapidly to another steady state, not necessarily producing gradual changes between the current and the future situation.»

Choi and Fisher (2003) estimated the expected change in flood damages for selected USA regions under two climate - change scenarios in which mean annual precipitation increased by 13.5 % and 21.5 %, respectively, with the standard deviation of annual precipitation either remaining unchanged or increasing proportionally.

It provided the most likely future evolution of the global mean temperature under different socio - economic scenarios and that of other quantities like regional precipitation changes.

In the coming century, increasing atmospheric GHG concentration and associated warming could have important hydrological and water resource consequences in the Southwest resulting from mean state changes due to higher evaporation and decreased precipitation [73 — 75].

Global solar irradiance reconstruction [48 — 50] and ice - core based sulfate (SO4) influx in the Northern Hemisphere [51] from volcanic activity (a); mean annual temperature (MAT) reconstructions for the Northern Hemisphere [52], North America [29], and the American Southwest * expressed as anomalies based on 1961 — 1990 temperature averages (b); changes in ENSO - related variability based on El Junco diatom record [41], oxygen isotopes records from Palmyra [42], and the unified ENSO proxy [UEP; 23](c); changes in PDSI variability for the American Southwest (d), and changes in winter precipitation variability as simulated by CESM model ensembles 2 to 5 [43].

The figure below shows the change in precipitation and evaporation (which have to balance globally) against the global mean surface temperature change.

That is particularly the case in California, where decadal precipitation variance is typically equivalent to 20 — 50 % of mean annual averages, mostly because of changes in precipitation received between November and March [16 — 17].

PDRMIP investigates the role of various drivers of climate change for mean and extreme precipitation changes, based on multiple climate model output and energy budget analyses.

These figures illustrate the way the probability distribution of future global mean temperature change under a high - emissions scenario is linked to different potential changes in temperature and precipitation at a county - level.

Data analyses have found an increase of drought intensity at many locations [130]--[131] The magnitude of change depends on the drought index employed [132], but soil moisture provides a good means to separate the effect of shifting seasonal precipitation and confirms an overall drought intensification [37].

Climate change by 2060 was computed as the difference (air temperature) or ratio (precipitation and solar radiation) of monthly mean climate between the GCM (unforced) control and 2xCO2 simulations at GCM grid boxes coinciding with the crop modelling sites (Figure 13.1 b).

Multi-model mean changes in surface air temperature (°C, left), precipitation (mm day — 1, middle) and sea level pressure (hPa, right) for boreal winter (DJF, top) and summer (JJA, bottom).

The authors tried to constrain the global - mean future precipitation change simulated by the set of climate models participating in the CMIP2 model intercomparison project through observable temperature variability and a simple energetic framework.

To assess the effect of climate change, we selected mean warmest month temperature (MWMT), mean coldest month temperature (MCMT), and mean annual precipitation (MAP).