Sentences with phrase «increased evapotranspiration»

A decrease in summertime precipitation, coupled with increased evapotranspiration, can lead to a reduction in inland freshwater levels at mid latitudes.

There is little evidence for a human influence on precipitation deficits, but a lot of evidence for a human fingerprint on surface soil moisture deficits — starting with increased evapotranspiration caused by higher temperatures.

Suggested mechanisms involve changes in the water cycle: increased evapotranspiration losses, extended water - stress periods, earlier snowmelt, and lengthened fire seasons.

Climate change can affect mountain streams in two major ways: By raising the overall temperature, increasing evapotranspiration, and by shifting the precipitation from snow to rain.

However, more 90 °F + (32 °C +) days will also 1) increase evapotranspiration and water demand for most crops; 2) limit grain development from pollination to seed (i.e., grain fill); and 3) elevate heat stress on livestock.

Rising temperatures should increase evapotranspiration, but plants may adapt by reducing water lost to transpiration.

We estimate that removing 1 Pg C y − 1 via tropical afforestation would require at least 7 × 106 ha y − 1 of land, 0.09 Tg y − 1 of nitrogen, and 0.2 Tg y − 1 of phosphorous, and would increase evapotranspiration from those lands by almost 50 %.

More generally, increased vegetation cover lowers albedo, meaning that more of the sun's light is absorbed which in turn warms the climate locally (another positive feedback), as well as increasing evapotranspiration and carbon uptake.

Or is the warming increasing evapotranspiration in the area, creating drier conditions that stress the trees and stunt their growth?»

This temperature increase will increase evapotranspiration, raising the amount of water vapor, a GHG, in the atmosphere, further raising the IR absorbed and reradiated by the atmosphere; this positive feedback has already been observed.

Not exact matches

In this context, simulations show that an increase of evapotranspiration will occur in Spanish forests; it will have a negative impact on other ecosystems, for example, on rivers.

The apparent rise in evapotranspiration — the process by which water is transferred from the land to the atmosphere by evaporation from plants and soil — is increasing potential drought risk with rising temperature trends, especially during periodic drought cycles that have been linked with strong El Nino events.

The CO2 physiological response has a dominant role in evapotranspiration and has a major effect on long - term runoff and soil moisture compared to radiative or precipitation changes due to increased atmospheric CO2.

That's because double cropping effectively increases the length of the active growing season — the period during which cropland evapotranspiration rivals that of native vegetation.

However, in many of the same places, actual evapotranspiration inferred from surface water balance exhibits an increase in association with enhanced soil wetness from increased precipitation, as the actual evapotranspiration becomes closer to the potential evaporation measured by the pans.

Hence, in determining evapotranspiration there is a trade - off between less solar radiation and increased surface wetness, with the latter generally dominant.

Combined with fuel loads, higher evapotranspiration rates and resulting shifts in water balance may be the best predictor of increased fire risk and fire severity in the future under a changing climate (Littell and Gwozdz 2011; Abatzoglou and Kolden 2013).

Although data are not complete, and sometimes contradictory, the weight of evidence from past studies shows on a global scale that precipitation, runoff, atmospheric water vapor, soil moisture, evapotranspiration, growing season length, and wintertime mountain glacier mass are all increasing.

These methods have been significantly improved by fully coupling the hydrologic cycle among land, lake, and atmosphere.94, 95 Without accounting for that cycle of interactions, a study96 concluded that increases in precipitation would be negated by increases in winter evaporation from less ice cover and by increases in summer evaporation and evapotranspiration from warmer air temperatures, under a scenario of continued increases in global emissions (SRES A2 scenario).

Water levels are influenced by the amount of evaporation from decreased ice cover and warmer air temperatures, by evapotranspiration from warmer air temperatures, and by potential increases in inflow from more precipitation.

Downwelling long - wave infrared (LWIR) radiation (DLR) is supposed to increase evaporation and evapotranspiration according to AGW due to increasing GHG effect from CO2 levels.

Plants response to higher CO2 levels result in less water utilation for photosynthesis (esp C4) which results in large gains of leaf growth (more growth for same water)-- forcing evapotranspiration to increase.

Concentrating on CO2 ppm gain causing (positive feedback) increased temperature is wrong — and they can't understand (using their same reasoning) the negative feedback of CO2 enrichment — a large part of this evapotranspiration.

The average relative humidity in cities is usually several percent lower than that of adjacent rural areas, primarily because of increased runoff of precipitation and the lack of evapotranspiration from vegetation in urban areas.

This is because carbon is sequestered at a faster rate, and other biogeophysical processes (e.g. increased transfer of moisture from the surface to the atmosphere, known as evapotranspiration) enhance the cooling, in the tropics.

We get a higher air temperature (i.e. by increased sensible heat flux) and increase in evapotranspiration (i.e. increased latent heat flux).

Taking into account CO2 - induced changes in vegetation, global mean runoff under a 2 * CO2 climate has been simulated to increase by approximately 5 % as a result of reduced evapotranspiration due to CO2enrichment alone («physiological forcing»)(Betts et al., 2007; Leipprand and Gerten, 2006).

In warm, dry regions, irrigation increases the amount of water available for plants to release into the air through a process called evapotranspiration.

Increasing atmospheric CO2 will tend to increase rates of photosynthesis and reduce evapotranspiration and / or increase leaf areas.

Event attribution analysis suggests that human induced greenhouse gas increases may also have contributed by causing evapotranspiration rates to be higher than they would have been under pre-industrial conditions.

Another contributing factor was evapotranspiration from the land surface, which is found to have acted as an important moisture source and was likely enhanced by antecedent rainfall that increased soil moisture over the northern Great Plains.

Several studies focused on the Colorado River basin showed that annual runoff reductions in a warmer western U.S. climate occur through a combination of evapotranspiration increases and precipitation decreases, with the overall reduction in river flow exacerbated by human demands on the water supply.

Key uncertainties involve: 1) the degree to which increases in evapotranspiration versus permafrost thaw are leading to drier landscapes; 2) the degree to which it is these drier landscapes associated with permafrost thaw, versus more severe fire weather associated with climate change, that is leading to more wildfire; 3) the degree to which the costs of the maintenance of infrastructure are associated with permafrost thaw caused by climate change versus disturbance of permafrost due to other human activities; and 4) the degree to which climate change is causing Alaska to be a sink versus a source of greenhouse gases to the atmosphere.

Gornitz et al. (1997) estimate that evapotranspiration of water from irrigated land leads to an increase in atmospheric water content and hence a fall in sea level of 0.14 to 0.15 mm / yr.

The lower relative humidity and increased temperatures that would result from potential reductions in fog and low cloud cover could increase plant evapotranspiration rates, raise soil water deficits, and accelerate risks of forest fire.

Via the report: «The effects of climate change, primarily associated with increasing temperatures and potential evapotranspiration, are projected to significantly increase water demand across most of the United States.