# what three factors are considered when determining net radiation? course hero

by Miss Lysanne Medhurst 4 min read

## What is net radiation in geography?

Net Radiation. Earth's net radiation, sometimes called net flux, is the balance between incoming and outgoing energy at the top of the atmosphere. It is the total energy that is available to influence the climate.

## What happens to net radiation as the season changes?

As the season changes into winter, the net radiation becomes negative across much of the Northern Hemisphere and positive in the Southern Hemisphere. The pattern reverses on the March equinox.

## What happens to net radiation at the equinoxes?

As the September equinox approaches, a zone of positive net radiation is nearly centered over the equator, and energy deficits lie over the poles. As the season changes into winter, the net radiation becomes negative across much of the Northern Hemisphere and positive in the Southern Hemisphere. The pattern reverses on the March equinox.

## What three factors are considered when determining net radiation?

To get net shortwave radiation, you need to know the surface albedo. This will depend on the land cover (water, snow, soil, vegetation etc). To get net longwave radiation, you need to know the surface and air temperature as well as the emissivities.

## What is considered when determining net radiation?

Earth's net radiation, sometimes called net flux, is the balance between incoming and outgoing energy at the top of the atmosphere. It is the total energy that is available to influence the climate.

## What factors affect net radiation?

Sensible heat, latent heat, and evapotranspiration. Ecosystems have a major influence on how the net radiation received at the surface is balanced by losses of sensible and latent heat, which in turn have profound effects on weather and climate.

## How do you calculate net radiation budget?

To calculate the net surface radiation balance, or Rnet, for each location, we need to know the shortwave incoming radiation and the net longwave radiation....Putting all our values together, we find the following:Rnet = SWincoming (1 - α) + LWincoming - LWoutgoing.Rnet = 24 W/m2 + 200 W/m2 - 230 W/m2.Rnet = -6 W/m2.

## How is net radiation geographically distributed?

The geographical distribution of the net incoming solar radiation at the top of the atmosphere (i.e., the incoming minus the reflected solar radiation) that is absorbed by the Earth is a function of the insolation distribution as well as of the regional variations of the planetary albedo (Fig. 2.12).

## What is a net radiation balance?

Net Radiation Balance. Net radiation (Rn) is the balance of the shortwave and longwave radiation streams, such as: ( 1 ) Rsw and Rlw are the shortwave and longwave components and the arrows denote the direction of the flux, generally expressed in units of Watts per square meter {Wm-2}.

## Why is net radiation important?

Net radiation plays an essential role in determining the thermal conditions of the Earth's surface and is an important parameter for the study of land-surface processes and global climate change.

## How does albedo influence net radiation?

Surface albedo is inversely proportional to the net radiation. For urban areas, after assimilation, the annual average net radiation decreases about 5.6%. For cropland, grassland, and forest areas, after assimilation, the annual average net radiations increase about 20.2%, 24.3%, and 18.7%, respectively.

## What can net radiation be used for?

The net radiation flux is the most important for land surface energy transformations, such as sensible heat, soil heat flux, and evapotranspiration (ET). It is an important quantity for research into land–atmosphere interactions (Blad et al. 1998; Monteith 1965; Niemelä et al.

## Where is net radiation generally highest?

For all surfaces, the net radiation is greatest when the sun is shining between clouds and is larger under an overcast sky than it is when the sun is near the horizon.

## How does the atmosphere affect the net radiation budget?

GREENHOUSE EFFECT Increasing concentrations of greenhouse gases such as carbon dioxide and methane increase the temperature of the lower atmosphere by restricting the outward passage of emitted radiation, resulting in "global warming," or, more broadly, global climate change.

## Which of the following explains length of daytime in the seasons in relation to net radiation a location receives?

How does the length of daytime in the seasons relate to the net radiation a location receives? A. The longer the days, the more solar energy the earth's surface receive.