Sentences with phrase «soil moisture showed»

Along the boundary, soil moisture showed «a sharp transition,» as did the type of vegetation likely to grow there in the absence of human activity, the scientists noted.

Corresponding time series of soil moisture show a similar drying.

Soil moisture shows a decreasing trend over the 1979 - 2017 period and all seasons of 2017 showed below average values.

Not exact matches

Studies including Wang's earlier work in Africa have shown that even small changes in soil moisture in drylands could be significant enough to cause large changes in vegetation productivity.

DeLaune said previous field studies from the Rolling Plains and adjacent High Plains demonstrated mixed results, with some showing a reduction in soil moisture and cash crop yield due to cover crops and others indicating no significant impact of cover crops on subsequent fiber yield.

Soil moisture sensors show, over time, how much water has gone into the ground, and how much has left, either from drainage or in the form of evapotranspiration from plants.

Control experiments have shown that water held in the zeolite increases the moisture content of soil in desert conditions.

Results showed that the bioplastics and biofabrics increased soil moisture relative to bare soil.

Analyses showed that high - frequency irrigation resulted in higher root zone soil moisture content relative to low - frequency irrigation despite reduced evaporative demand during part of the growing season.

Cultivars «Radicans» and «August Beauty» were used in a study that showed that soil moisture sensor technology can be effective for controlling growth of the cultivars.

-- Research shows that wheat crops benefit from a preceding legume pulse crop through the addition of soil organic matter leading to conservation of soil moisture and the addition of nitrogen (Miller et al 2002; Miller et al 2003; Cutforth et al 2007).

«The study showed soil amendment using lignite - derived humic substances improved the condition of plants exposed to water stress by reducing moisture loss,» he said.

Studies show that soil moisture retention in most years did not significantly decrease with the presence of these crops (Miller et al. 2006; Miller and Holmes 2012), suggesting that this revenue - generating crop can replace a fallow year without incurring a moisture deficit.

Graphs show A) six - month winter (November to April) rainfall, B) annual temperature, C) annual soil moisture, and D) total population.

The decreasing rainfall (shown in the top graph below) combined with rising temperatures (second graph) resulted in a decline in soil moisture (third graph), the researchers say.

At the same time, other research shows that increased heat will be detrimental to many domesticated cereal crops, plus it will promote increased loss of soil moisture, both of which will promote reduced crop yields.

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.

Charts showing the timing of floods (green) alongside the peaks in their main drivers — 7 - day maximum rainfall (purple), peak snowmelt (orange) and maximum soil moisture (blue)-- for six regions in Europe from 1960 to 2010.

You can see this illustrated in the charts below, which show the timing of floods (green lines) as well as the peaks of each of their drivers — rainfall (purple), orange (snowmelt) and soil moisture (blue)-- for six flooding «hotspots» in Europe.

Previous research has shown that soil moisture plays a critical part in both permafrost thaw and carbon exchange with the atmosphere — as the permafrost breaks down, surface water may drain away to deeper soil layers, leaving the topsoil high and dry.

The Palmer Drought Severity Index, which is a measure of soil moisture using precipitation measurements and rough estimates of changes in evaporation, has shown that from 1900 to 2002, the Sahel region of Africa has been experiencing harsher drought conditions.

Maps show most recent daily, monthly and 12 - month calculated soil moisture, anomalies and percentiles.

Moreover, we show that multidecadal variations exist in other hydrological variables (evapotranspiration, snow cover, and soil moisture).

These seasonal changes contribute to an annual increase in GPP with simultaneous wNA + Amazon forest loss due to release from soil moisture limitation (not shown).

The ERA - Interim analyses of soil moisture are included in the monthly summaries to provide a qualitative picture of major anomalies and to show the consistency with other variables.

The averages for the last 12 months show dry conditions over most regions within a large belt stretching across parts of both Europe and Asia, with below average precipitation and soil moisture and much below average relative humidity, starting in south - western Europe and ending near Japan.

The four months to March 2018 for SE Europe also showed negative anomalies for both relative humidity and soil moisture.

Murry Salby who is suggesting that ocean and soil moisture data shows that the observed rise in atmospheric CO2 might well be entirely from natural causes and Roy Spencer who suggests that variations in oceans and sun affecting global cloudiness make it impossible to verify the sign of the climate system response to more CO2 in the air.

The darker grey shading denotes where soil moisture is not shown due to ice cover or climatologically low precipitation.

Soil moisture is included in the monthly summaries to provide a qualitative picture of the major anomalies and to show its consistency with the other variables.

In 2004, new rainfall data showed that half of the forest area of the Amazon Basin had either fallen below, or was very close to, the critical level of soil moisture below which trees begin to die (Nepstad et al. 2004).

Bill Gray has a favorite diagram, taken from a 1985 climate model, showing little nodules in the center with such labels as «thermal inertia» and «net energy balance» and «latent heat flux» and «subsurface heat storage» and «absorbed heat radiation» and so on, and they are emitting arrows that curve and loop in all directions, bumping into yet more jargon, like «soil moisture» and «surface roughness» and «vertical wind» and «meltwater» and «volcanoes.»

The four months to January 2018 for SE Europe also showed large negative anomalies for both relative humidity and soil moisture.

The ERA - Interim analyses of soil moisture are included here to provide a qualitative picture of major anomalies and to show the consistency with other variables.

In the results section both data records are thus shown with respect to their «native» climatology, mainly in order to more directly relate the ERA - Interim soil moisture with other ERA - Interim variables.

The three main variables that are used for the analysis are precipitation, soil moisture and relative humidity of surface air, though the latter is not shown.

Relative humidity of surface air is not shown, but referred to when it provides complementary information to the precipitation and soil moisture analysis.

The higher resolution of E-OBS shows a large positive precipitation anomaly over the Alps and the satellite soil moisture product shows above average soil moisture for a larger region than ERA - Interim.

The seasons with the largest negative anomalies were the spring and the summer, which both had the third largest negative soil moisture anomaly for the respective season in the ERA - Interim record, while regionally autumn showed the largest anomalies.

Evaluation of C3S satellite soil moisture against sets of ground - based measurements shows that it captures temporal dynamics, but with large variations in quality through space and time (Dorigo et al. 2017, Dorigo et.

«Our results show that increasing temperatures have a large effect on carbon release from permafrost, but that changes in soil moisture conditions have an even greater effect,» Dr Schädel says.

We find a close agreement between the CESM - based hindcasts and the Markov model, indicating that the largest contribution to the predictive skill of soil water on interannual to decadal timescales in CESM can be attributed to the damped persistence, which is partly governed by the evapotranspiration (Delworth and Manabe 1988), the total runoff, and the diffusion of soil moisture into the deeper soil levels as shown in the Eq.

FIGURE 2.17 Colors show volumetric soil moisture content, where blue is more moist and red is drier.

«The models also showed that modest global warming may produce a higher CH4 emission, but that this effect may be reversed by larger increases in temperature, due to the effect of soil moisture depletion.»

Blue depicts areas with higher soil moisture than usual, while brown shows lower soil moisture than usual for this time of the year.

The image shows soil moisture anomalies in the United States and the Gulf of Mexico for the last 10 days of August 2017.

The four months to April 2018 for SE Europe also showed negative anomalies for both relative humidity and soil moisture.

Their various climate simulations do show differences in soil moisture, as well as in the land - atmosphere interactions that contribute to soil - drying evaporation.