Not exact matches
Our goal is to «rehydrate the landscape»
by increasing the amount of
rainfall that is absorbed into the
ground to recharge water supplies and feed headwater streams.»
Combining these models with data on local
rainfall and snowmelt, the team calculated what fraction of the water is carried to the sea
by rivers, and what fraction sinks into the
ground.
Plants use carbon dioxide from the air to grow parts that eventually fall to the
ground to decompose or get washed away
by the region's plentiful
rainfall.
The scientists converted the
rainfall measurements to daily rates, and cumulative weekly amounts, and checked the accuracy
by comparing them with
ground - based rain gauges.
One big reason the sea level dropped for so long: Only 6 % of the
rainfall in Australia runs directly back to the sea, and the rest runs inland to lowlands (image depicts a normally dry area in eastern Australia flooded
by rains in late November 2011) where it either soaks into the
ground or evaporates back into the atmosphere — a process that returns moisture to the sea far more slowly than the rivers draining other continents do.
However, they shift
rainfall patterns
by reducing evapotranspiration, the process
by which water evaporates from the
ground and enters the atmosphere.
It has been eroded
by the action of
rainfall and
ground water into a very irregular and sharp surface.
So Tom Quirk got the
rainfall data and discovered that
rainfall in Australia has a large effect on the temperatures recorded
by the sensors five feet off the
ground.
A team of Berkeley Lab researchers has performed molecular level analysis of desert biological soil crusts — living
ground cover formed
by microbial communities — to reveal how long - dormant cyanobacteria become activated
by rainfall then resume dormancy when the precipitation stops.
Scientists «exclude [d]
rainfall from a 100 - meter -
by -100-meter (1 hectare) plot of rainforest»
by covering the
ground with plastic sheet gutters.
Compared to those problems (bias and random variation), here is a large unknown: a 2 % increase in cloud cover would prevent the warming effect of increased CO2; will a 7 % increase in water vapor pressure, or 12 % increase in lightning
ground strike rate, or a 2 % — 7 % increase in
rainfall rate be accompanied
by a 2 % increase in cloud cover?
The
ground water extracted for irrigation comes from the superficial aquifer which is «readily» replenished
by rainfall and through coastal limestone.
This is particularly true in the spring, when the winter's heavy snows begin to melt and can not be absorbed
by the still - frozen
ground, and in the summer, when heavy
rainfall on already saturated
ground leads to flash - flooding.