Sentences with phrase «water evaporation rates»

Also, if the vegetation changes substantially — low grass to shrubs and trees - then this could change water evaporation rates around the station and alter air temperatures.

As the temperature increases, the water vapor pressure (hence by inference the water evaporation rate on non-dry surface) increases supralinearly; that is, a 1K increase from 288 K is much less than a 1K increase from 308K.

Not exact matches

Warmer air increases the evaporation rate of water, and for every degree Celsius increase in temperature, a parcel of air can hold 7 percent more water.

Evaporation rates can vary according to local climates and cultivation pond size, but the larger point is that water consumption is dramatically lower than for soybean cultivation and the water can be recycled three to four times.

The excessive heat increased the rate of water loss by evaporation and caused precipitation to shift from snow to rain, leaving a meager snowpack and parched reservoirs.

This reduces the rate of water evaporation, raises the surface temperature of the meat, and consequently speeds up cooking.

The darkest blue indicates deeper water, but it's also this shade for another reason: the rich blue hue comes from dye added to speed up the rate at which the water absorbs sunlight and warmth, aiding evaporation.

You probably noticed this also when you did the extra activity of putting the same amount of alcohol and water outside in the sun and monitored their evaporation rates.

Simultaneously, as the average liquid droplet becomes smaller through evaporation, the vapor's density increases, so more vapor molecules merge at a faster rate to become microscopic liquid droplets, and more water molecules are ionized.

Key facts about the lesson are: The content covered by the lesson are; the water cycle as a system, the states of water and the proportion of water in different states, features / components of the water cycle (transpiration, percolation etc), flows and stores in the water cycle, factors that affect the rates of precipitation, condensation, evaporation, infiltration, percolation and interception in the water cycle.

Year 4 Science Assessments Objectives covered: Recognise that living things can be grouped in a variety of ways Explore and use classification keys to help group, identify and name a variety of living things in their local and wider environment Recognise that environments can change and that this can sometimes pose dangers to living things Describe the simple functions of the basic parts of the digestive system in humans Identify the different types of teeth in humans and their simple functions Construct and interpret a variety of food chains, identifying producers, predators and prey Compare and group materials together, according to whether they are solids, liquids or gases Observe that some materials change state when they are heated or cooled, and measure or research the temperature at which this happens in degrees Celsius (°C) Identify the part played by evaporation and condensation in the water cycle and associate the rate of evaporation with temperature Identify how sounds are made, associating some of them with something vibrating Recognise that vibrations from sounds travel through a medium to the ear Find patterns between the pitch of a sound and features of the object that produced it Find patterns between the volume of a sound and the strength of the vibrations that produced it Recognise that sounds get fainter as the distance from the sound source increases Identify common appliances that run on electricity Construct a simple series electrical circuit, identifying and naming its basic parts, including cells, wires, bulbs, switches and buzzers Identify whether or not a lamp will light in a simple series circuit, based on whether or not the lamp is part of a complete loop with a battery Recognise that a switch opens and closes a circuit and associate this with whether or not a lamp lights in a simple series circuit Recognise some common conductors and insulators, and associate metals with being good conductors

However drought - resistant plants conduct this process at night and close their pores during the day when the rate of water loss from evaporation is...

The model considers all relevant feedback processes caused by changes of water vapour, lapse - rate, surface albedo or convection and evaporation.

Evaporation rates do indeed seem to be rising (Yu & Weller 2007), and so is tropospheric water vapor (Trenberth et al 2009 at 317).

... the higher up you go the less water vapor you normally get because it is too cold to have available water vapor (the rate of condensation strongly exceeds the rate of evaporation)... unless you warm it and «suddenly water vapor just appears» where it was mostly absent before.

Consistent with how I was reading things, pleasantly — barring some cautious hedging I'd made, based on the possibility that salinity could reflect mass changes, either when fresh water was added to the ocean via glacial melt or impoundment decreases (ocean mass increase) or via increased evaporation rates (ocean mass decrease).

It has a lot to do with water stored in soils, which gets lost faster in a warmer climate due to higher evaporation rates.

An increase in surface temp will increase water vapor pressure at the surface: that will likely increase the rate of evaporation at the surface, which may or may not increase cloud cover.

But assuming this, given a constant residence time for water vapor molecules, the rates of evaporation and precipitation should rise in step with the absolute humidity.

Part way there, but no quantitation yet: of the 3.77 W / m ^ 2 radiated back dowwnard, most goes to increased rate of evaporation of the water at the surface, and much less goes to increased mean temp increase at the surface; hence increased rate of non-radiative transfer of heat from surface to upper atmosphere, slight increase in rainfall as hydrological cycle is faster, and slight increase in cloud cover.

Rates of water loss, due in part to evaporation, were double the long - term average.

By modifying the evaporation and precipitation rate, the global warming will probably affect the hydrous climate balance and therefore the Tunisian water resources.

Both effects imply a higher rate of evaporation of surface water given temperature and CO2 increases, though quantitative effects entail intractable calculations.

The advantage of drip irrigation is that it applies water very slowly at a rate that the plants can use, losing little to evaporation.

The theory is that increasing CO2 will cause a small bit of warming and this will increase evaporation rates (which occur fastest in the tropics) and dumps more water vapour in the atmosphere (water vapour is by far a more potent greenhouse gas than CO2) and this feedback amplification is meant to continue until Earth settles down and finds a new equilibrium temperature.

that is because the water vapor pressure is supralinearly related to temperature: that is, a temp rise from 289K to 290K has a larger effect on vapor pressure (so, most likely, on the evaporation rate) than does a temp rise from 288K to 289K.

This rapid change might affect the availability of water resources by altering the rates of evaporation and precipitation.

«With global temperatures warmer now than they were at the beginning of the last century, that means our temperatures are warmer too, which increases the rate of evaporation and increases the demands on water, increases the stress on the water supply, and also leaves us more susceptible to breaking the high - temperature record, which we've been doing lately,» Nielsen - Gammon said.

But, if the grass is moving water up the stem and the exterior environment cools abruptly, the grass contains excess water as the evaporation rate drops.

Could an increase in greenhouse gases actually have a cooling effect over water by speeding up the rate of evaporation from the oceans thereby extracting energy faster from the oceans, speeding up the hydrological cycle and pushing energy faster to space?

Conversely, if you add heat to the system, two things will happen, the water will warm and the rate of evaporation will increase until the water vapor partial pressure gets high enough so that the rate of condensation again equals the rate of evaporation.

Efflux is the rate that water flows through the hole in the dam, evaporation and seepage into the bedrock.

The level of the water is not necessarily, directly, proportional to the flux through the system, it depends on the relationship between the height of the water and the flow rate through the hole, with rainfall and evaporation an added complexity.

The TEMPERATURE of the water (its average kinetic energy) determines the rate of both evaporation and radiation.

In the real world one can influence the rate of evaporation either by reducing pressure or by increasing the energy content of the water (amongst other ways such as increased air movement and humidity changes).

The oceans control the background rate of energy flow from ocean to air via The Hot Water Bottle Effect and it is the energy flow from ocean to air (supplemented to a miniscule extent by the greenhouse effect) that drives the rate of evaporation by creating varying temperature differentials between sea surface and air at the surface.

The size of the temperature differential between air and water combined with the rate of movement of both air and water within the region of interaction dictates the rate of evaporation and the density and pressure differential dictates the direction of energy flow which on Earth is always continuous at variable rates from water to air.

Note that hot dry air above water will increase the rate of evaporation but so also does cold dry air above water.

Warmer water surfaces from extra downwelling infra red can not cause warming of the ocean bulk because the rate of evaporation increases proportionately to the extra energy available and the latent heat of evaporation is then taken mostly from the water.It is then no longer available to warm the ocean bulk.

The rate of evaporation always increases in proportion to the supply of extra energy to water molecules at the surface or to molecules of air that are in contact with the water surface so that no warming of the ocean by the air can occur.

If the cool air is saturated so that the rate of evaporation can not increase then the water surface releases steam instead and the extra energy is still released into the air and radiated away upwards and not into the water below.

As regards a warming of the ocean skin, evaporation is a continuous process caused by temperaure, density and pressure (not just temperature) differentials between water and air so that the rate of evaporation accelerates when a water surface is warmed such as from the warming effect of extra greenhouse gases (especially if the air is dry).

The ocean responds by rapidly increasing the surface evaporation rate by 1.7 W.m - 2, or 2.7 g.hr - 1 of water for ideal «clear sky» conditions.

In other words if you gave it a quick burst of heat (a.k.a. infra - red radiation) then this would warm the water and increase the rate of evaporation.

Water vapor is brought into the atmosphere via evaporation - the rate depends on the temperature of the ocean and air.

As the water warms, the rate of evaporation increases.

However if those bursts of heat were to become more frequent or more intense then in order for the rate of evaporation to increase from the surface to counteract it, the kinetic energy of the water molecules (i.e. the water's temperature) would need to increase.

Instead it is a composite of the rates of evaporation and condensation, melting and freezing and thus the average time that a water molecule remains in the air in vapour form, or in the ocean as a liquid or in ice and snow as a solid.

If the surface is a water bed (seal to prevent evaporation) the range and rate of change would be less than if the surface was a foam mat.

Instead of warming the water down to a significant depth it rather serves to increase the evaporation rate and the heat is carried off the surface as latent heat of vaporization.