Sentences with phrase «estimate water runoff»

Scientists found ways to improve the capabilities of a land model within global and regional Earth system models to estimate water runoff.

Not exact matches

John Robbins of Earth Save International estimates that the water pollution attributable to US agriculture, including runoff of soil, pesticides, and manure, is greater than all municipal and industrial sources combined.

The scientists estimated that the amount of contaminated water flowing into the ocean from this brackish groundwater source below the sandy beaches is as large as the input from two other known sources: ongoing releases and runoff from the nuclear power plant site itself, and outflow from rivers that continue to carry cesium from the fallout on land in 2011 to the ocean on river - borne particles.

It is estimated this upcoming spring runoff may produce 50 more feet of water making the elevation 3630 - 3650 during mid-summer 2008.

However, with improving techniques, researchers recently estimated total submarine groundwater (saline and fresh water combined) discharges suggesting a rate 3 to 4 times greater than the observed global river runoff, or a volume equivalent to 331 mm / year (13 inches) of sea level rise.

Grid estimation of runoff data: report of the WCP - Water Project B. 3: development of grid - related estimates of hydrological variables by Lars Gottschalk and Irina Krasovskaia.

Estimates of runoff and evaporation were validated by comparing simulated change in storage, computed by adding inputs and subtracting outputs from the known water levels by month, to observed change in storage.

The main objectives of this study are to better understand the characteristics of the SR through an in - depth assessment of the contemporary water balance when the basin was intensively monitored (1996 — 2005), to use standardized runoff to select the best timescale to compute the Standard Precipitation (SPI) and Standard Precipitation Evaporation Indices (SPEI) to estimate trends in water availability over 1919 to 2005.

In Tippecanoe County alone, parking lots turn out about 1,000 pounds of heavy - metal runoff per year, says Purdue professor Bernard Engel, who used a computer model to estimate changes in water - borne runoff caused by land - use changes.

For example, the existing global circulation models do not adequately describe the water cycle in the Amazon, with the modeled moisture convergence being half the actual amounts estimated from the observed runoff values.