The team also compared the ice loss up until the mid-1980s to that observed by satellites over roughly the last decade and found that today the rate of ice loss is twice the 20th century average, mostly because of
increased water runoff from the ice sheet's surface.
«The removal of vegetal cover through burning would likely
increase water runoff when it rains, potentially reducing their water retention capacity and invariably the soil moisture,» Ichoku said.
Not exact matches
- Drinking
water and wastewater infrastructure upgraded - Advanced treatment installed for both drinking
water and wastewater, and advanced filtration systems installed for drinking
water - Green infrastructure and open spaces built for source
water protection - «[E] nsuring proper management and storage of common contaminants like manure and road salt to prevent
runoff; and
increasing the state Superfund to expedite the cleanup of hazardous waste that may impact sources of drinking
water.»
In addition, by paving over previously open space — or farming previously reserved lands — communities in these watersheds contribute to record high
waters through
increased runoff.
«Thus, annual glacier
runoff volume typically
increases until a maximum is reached, often referred to as «peak
water.»»
Warmer
water coupled with the
increased nutrients from permafrost and soil
runoff could bolster aquatic life.
Urbanization
increases surface
runoff, by creating more impervious surfaces such as pavement and buildings do not allow percolation of the
water down through the soil to the aquifer.
Other recommendations include building a peripheral canal to ferry some Sierra
runoff around the delta,
increasing the «groundwater banking» of
water in underground aquifers,
increasing a
water transfer market to allow
water rights holders to sell access to
water, and stepping up efforts to conserve
water in urban areas.
Those heavier raindrops also compact the soil, causing it to absorb less
water and
increasing runoff and sediment, which clog rivers and contribute significantly to lowland flooding.
ref Specifically, reducing land - based sources of pollution (nutrient
runoff and sedimentation) has been identified as an important approach to address acidification in coastal
waters because nutrients like phosphorus and nitrogen and land - based carbon inputs can
increase the acidity of coastal and oceanic
waters.
They provide essential breeding grounds and nurseries for commercially important fish; mangroves and the adjacent seagrass beds retain and filter sediment from river
runoff,
increasing the clarity of
water on the reefs; they are the first line of storm defence, absorbing the power of the wind.
Which leads me to another question — the melting glacial / Greenland / Antarctic ice
water is depleted in CO2 (check out the bubbles in your ice cubes)-- how much additional CO2 is being sequestered by this
runoff into the oceans, and what happens to CO2
increase when we run out of glaciers?
These dinoflagellate blooms, which can be thought of as ancient red tides, are a sign of major environmental stress in the coastal zone possibly as a result of the
increased runoff of
water from the land.
We find that while the surface stratification strengthens with the
increasing runoff, the surface mixed layer thins and warmer
water is found closer to the surface.
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.
Finally, if the North American hydrologic cycle is enhanced, and / or Greenland's southern ice caps melt, the
increased fresh
water runoff from land areas could dilute the ocean surface
water and critically reduce its salinity.
Availability of resources such as usable
water will also depend on changing rates of precipitation, with decreased availability in many places but possible
increases in
runoff and groundwater recharge in some regions like the high latitudes and wet tropics.
The volume of
runoff also
increases, reducing the amount of
water available during the dry summer months when
water demand is higher and supplies are lower.
Agricultural
runoff, in combination with
increased water temperatures, has caused considerable non-point source pollution problems in recent years, with
increased phosphorus and nitrogen loadings from farms contributing to more frequent and prolonged occurrences of anoxic «dead zones» and harmful, dense algae growth for long periods.
Stormwater
runoff that overloads urban sewer systems during extreme events adds to
increased levels of toxic substances, sewage, and bacteria in the Great Lakes, affecting
water quality, beach health, and human well - being.
Changing land use and the expansion of urban areas are reducing
water infiltration into the soil and
increasing surface
runoff.
This usually occurs in coastal and estuarine areas due to reducing land - based influence (e.g., either from reduced
runoff and associated groundwater recharge, or from excessive
water withdrawals from aquifers) or
increasing marine influence (e.g., relative sea - level rise).
These
increases in
runoff would likely improve conditions for
water - dependent natural resources, such as cienegas, riparian areas, and aquatic habitats, which are vulnerable to low flows that are experienced seasonally, especially in summer months, and also during droughts [5]--[7].
Mechanical thinning can
increase runoff at fine scales, as well as reduce fire risk and tree
water stress during drought, but the effects of this practice have not been studied at scales commensurate with recent forest disturbances or under a highly variable climate.
It also delays
water runoff to
increase evapo - transpiration while providing secure and proper drainage of surplus volumes to avoid unforeseen roof loads.
Mechanical thinning alone or in combination with prescribed fires reduced fire risk,
increased runoff, and improved tree
water - stress at the plot scale [20]--[23].
Runoff gains also could provide incidental benefits to the water supply of downstream users, but the increases were more modest when compared to total runoff from the Salt - Verde water
Runoff gains also could provide incidental benefits to the
water supply of downstream users, but the
increases were more modest when compared to total
runoff from the Salt - Verde water
runoff from the Salt - Verde watersheds.
SITES - certified landscapes additionally help reduce
water demand, filter and reduce stormwater
runoff, provide wildlife habitat, reduce energy consumption, improve air quality, improve human health and
increase outdoor recreation opportunities.
By mid-century, annual average river
runoff and
water availability are projected to
increase by 10 - 40 % at high latitudes and in some wet tropical areas, and decrease by 10 - 30 % over some dry regions at mid-latitudes and in the dry tropics, some of which are presently
water - stressed areas.
«anti-rural factors» — lack of evaporative cooling from soil and plants, lack of plant cooling,
increased thermal conductivity and capacity from artificial structures, faster
water runoff and sequestration in cities
Higher
runoff is expected to mobilise fertilisers and pesticides to
water bodies in regions where their application time and low vegetation growth coincide with an increase in runoff (Soil and Water Conservation Society, 2
water bodies in regions where their application time and low vegetation growth coincide with an
increase in
runoff (Soil and
Water Conservation Society, 2
Water Conservation Society, 2003).
greater pollutant loads due to
increased infiltration rates to aquifers or higher
runoff to surface
waters (as result of high precipitation),
However, no anthropogenic influence can be detected for 1 - day and 3 - day surface
runoff, as
increases in extreme precipitation in the present - day climate are offset by decreased snow cover and lower frozen
water content in soils during the May — June transition months, compared to pre-industrial climate.
It is perfectly conceivable, for example, to have annual precipitation
increase 10 to 20 % at the same time that mean annual surface
water runoff decreases by 10 to 20 % (or even more).
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.
Raw
water quality is declining, affecting drinking
water quality even with conventional treatment, due to
increased temperature, as well as sediment, nutrient, and pollutant
runoff during heavy rain and floods.
This short - term
increase in
runoff is interpreted as the consequence of glacier retreat, but in the long term there will be a reduction in
water supply as the glaciers shrink beyond a critical limit (Jansson et al., 2003).
Part IV: «Climate Change and
Water: Rights and Runoff» presents Donald Bren Distinguished Professor of Corporate Environmental Management Gary Libecap and Assistant Professor of Hydrology Christina Tague in a discussion about the complexities of managing the ever - increasing demands placed on scarce water resou
Water: Rights and
Runoff» presents Donald Bren Distinguished Professor of Corporate Environmental Management Gary Libecap and Assistant Professor of Hydrology Christina Tague in a discussion about the complexities of managing the ever -
increasing demands placed on scarce
water resou
water resources.
«Reduced
runoff is
increasing the pressure on freshwater resources in much of the world, especially with more demand for
water as population
increases,» says NCAR scientist Aiguo Dai, the lead author of the journal paper.
Although these hydrological changes could potentially
increase soil
water availability in previously snow - covered regions during the cool low - ET season (34), this effect would likely be outweighed by the influence of warming temperatures (and decreased
runoff) during the warm high - ET season (36, 38), as well as by the
increasing occurrence of consecutive years with low precipitation and high temperature (Fig. 4A).
Constructed wetlands around the house and the inclusion of a green roof further help to
increase energy efficiency and manage
water runoff.
Within the Indus basin, reduced melt
water will have significant impacts upon available
runoff; however,
increased uncertainties surrounding precipitation and socioeconomic changes limit any conclusive assessment of how
water availability will be affected; moreover, seasonality of
runoff may be a more important factor.
Polluted
runoff from both rural and urban lands
increases erosion and puts public health at risk by contaminating drinking
water supplies.
Nearshore benthic communities also could undergo significant change induced by reduced ice cover, longer open -
water season, changing flows through the Bering Strait,
increased frequency and intensity of storms,
increased river and freshwater
runoff, and
increased ice scouring and coastal erosion.
As the mountain range's glaciers began to waste away,
water runoff temporarily
increased.
Shoemaker Green not only offers an open space of lawns, tree - lined walkways, and sitting areas but will also improve
water quality and minimize
runoff, reduce the effect of the urban heat island by greening large paved areas, restore biomass on site,
increase local biodiversity, and improve the overall environment for the community.