Sentences with phrase «with evapotranspiration»

Dry soils may amplify such extremes through feedbacks with evapotranspiration.

Not exact matches

This company's specialized sensor system provides farmers with data tracking evapotranspiration to guide irrigation decisions.

Evapotranspiration is another way plants can communicate with high - tech irrigation systems.

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.

Here it can be used by plants or evaporate directly, with water loss from both processes combined called evapotranspiration.

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).

To be sure, some of these effects (such as the impact of irrigation on surface water vapour, or land use changes on evapotranspiration) are not easily dealt with in terms of the tropospheric radiative forcing — a point that was well made in the National Academies report on radiative forcing (on which Dr. Pielke was an author).

Six Chinese scientists used remotely - sensed imaging data, including leaf area index (LAI), normalized difference vegetation index (NDVI), an enhanced vegetation index (EVI), gross primary production (GPP) and net primary production (NPP), coupled with other data (temperature, soil moisture, evapotranspiration, albedo and wind) over the period 2003 to 2014 to analyze the effects of a wind farm on summer vegetative growth in a region of northern China.

The role of vegetation in climate change is massive — and the above evapotranspiration is a major player with some reports of minus 0.6 C per year?

If the upper troposphere cools only by radiation (with probably some convection across the tropopause), but the surface transfers energy to the upper troposphere via radiation, convection, and evapotranspiration, why would the concurrent CO2 - induced warming be uniform?

Researchers in the historical Beaver Creek experiments hypothesized that lower tree densities associated with thinning would reduce evapotranspiration losses, and thereby allow more water to be available for soil moisture, groundwater recharge, and surface water runoff [29].

«Here we quantify the direct climate effects of sugar - cane expansion in the Brazilian Cerrado, on the basis of maps of recent sugar - cane expansion and natural - vegetation clearance combined with remotely sensed temperature, albedo and evapotranspiration over a 1.9 million km2 area.

Broad - scale changes in vegetation in general, and tree loss in particular, have pronounced effects on climate processes through biogeophysical mechanisms such as albedo, evapotranspiration (ET), and carbon dioxide exchange with the atmosphere [11].

Had the model started with a higher warming figure, it would have resulted in a higher warming figure when evapotranspiration was plugged in.»

«Furthermore, recent studies suggest that fragmenting the Amazon forest could disrupt regional rainfall by breaking down a «biotic pump», in which evapotranspiration from forests creates low - pressure zones that draw in moisture - laden air from the Atlantic Ocean,» said William F. Laurance, a researcher at the Smithsonian Tropical Research Institute, who together with Lovejoy, won the 2009 BBVA Foundation Frontiers of Knowledge Award in Ecology and Conservation Biology for their work in the Brazilian Amazon.

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.

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.

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.

We have direct observation from ground - based instruments which measure downwelling and upwelling LWR separately and the results are entirely consistent with Trenberth's energy budget cartoon, from whence it is we also find the surface fluxes for convection and evapotranspiration.

Vegetation cover changes caused by land use can alter regional and global climate through both biogeochemical (emissions of greenhouse gases and aerosols) and biogeophysical (albedo, evapotranspiration, and surface roughness) feedbacks with the atmosphere, with reverse effects following land abandonment, reforestation, and other vegetation recoveries (107).

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

The team examined data on carbon - dioxide flux, evapotranspiration, sensible heat, air temperature, net radiation and photosynthetic active radiation from five FLUXNET grassland sites in Canada, the US and Hungary, along with leaf - area index information derived from satellite data.

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.