Comparison between Sensible Heat and Latent Heat
How can you describe the difference between latent and sensible heat? . get evaporated (Liquid to Gas) with no change in temperature is LATENT ENERGY. What is the difference between SENSIBLE AND LATENT HEAT. into a gas ( evaporates), the loosening of attraction among the molecules. Latent and sensible heat are types of energy released or absorbed in the atmosphere. Latent heat is related to changes in phase between liquids, gases, and solids. Evaporation of sweat in humans and animals also leads to cooling of the.
This is because radiation is proportional to the 4th power of temperature, and the emissivity of the atmosphere. Nullius in Verba jae, The point is that back radiation has nothing to do with it. The amount of back radiation just increases or decreases the amount of convection required to maintain the fixed lapse rate.
It is the lapse rate that controls surface temperature.
It would be impolite. The usual approach to teaching it starts with the shell model as the basic mechanism, and then tries to introduce convection as a minor modification to it. This I believe to be wrong.
Comparison between Sensible Heat and Latent Heat
The effects of convection so dominate the result that it is in effect a completely different mechanism, and the intuition developed for the shell model is just misleading. But it persists, nevertheless. In a convective atmosphere, the surface temperature is controlled by the incoming energy, the average altitude of emission direct to space, and the lapse rate between that altitude and the surface.
- Latent and Sensible Heat
- What is the difference between sensible and latent heat?
The atmosphere at the average emission altitude settles at the effective radiative temperature as any radiating body in a vacuum doesand then as air descends to the surface from that altitude driven by convection it is compressed by rising air pressure, and the compression increases its temperature. The higher the altitude it descends from, the warmer the surface gets. So in Atlanta the average altitude of emission to space is a bit higher than it is in Phoenix due to the extra H2O in the air, so air descending from this altitude has further to go and is compressed more.
But at the same time, moist air changes temperature with altitude more slowly than dry air, so the two effects tend to cancel. When liquid water is put into ice cube trays and placed in the freezer, the water gives off energy as the water becomes solid ice.
This energy is removed by the freezer system to keep the freezer cold. Water vapor is a greenhouse gas located in the atmosphere and a very important component for cloud formation. If the air is dry, or unsaturated, clouds are not likely to form because there is minimal water vapor in the air. If the air is moist, or saturated, the water vapor will condense to form clouds. When these gas molecules condense into liquid drops, latent heat is released into the atmosphere which warms the air surrounding the molecule.
This helps to add instability in the atmosphere and this warm air surrounding the molecule will want to rise.
Warm air is less dense than cold air because molecules in warm air move around much faster and move further apart. Latent Heat in Thunderstorms and Hurricanes Latent heat plays a very important role in thunderstorms and hurricanes.
Clouds form when warm air rises and the water vapor it contains condenses onto particles called cloud condensation nuclei. At that point the air becomes saturated. When this air first begins to rise, the water vapor is in the gaseous phase.
Latent and Sensible Heat | North Carolina Climate Office
When the water vapor condenses to form clouds, it releases latent heat into the atmosphere. The latent heat then warms the surrounding air around the new cloud droplet causing instability. The warm air around the cloud droplet will now want to rise and condense. This increases the cloud height and depending on how unstable the atmosphere is, thunderstorms could form from these growing clouds. Thunderstorms release enormous amounts of latent heat which adds to the instability in the atmosphere causing some thunderstorms to become severe.
In hurricanes, latent heat is released within the clouds of the hurricane, warming the air inside the clouds.
Hurricanes feed off of this latent heat release because it causes instability within the cloud and this warm air will want to rise.
The storm will then intensify, or gain strength. Sensible Heat Sensible heat is the energy required to change the temperature of a substance with no phase change. The temperature change can come from the absorption of sunlight by the soil or the air itself.
Or it can come from contact with the warmer air caused by release of latent heat by direct conduction.