Thermal Radiation Homework: Snow-Covered Surface Absorption

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SUMMARY

The discussion focuses on calculating the amount of solar radiation absorbed by a snow-covered surface, given a solar radiation influx of 1367 W/m² and a 50% reduction due to atmospheric absorption and reflection. The key equation for this calculation involves the emissivity of snow, which ranges from 0.969 to 0.997. Understanding the emissivity value is crucial for accurately determining the absorbed radiation. The final absorption calculation will depend on applying the correct emissivity in the provided formula.

PREREQUISITES
  • Understanding of thermal radiation principles
  • Familiarity with the concept of emissivity
  • Knowledge of solar radiation measurements
  • Ability to apply the Stefan-Boltzmann law
NEXT STEPS
  • Research the Stefan-Boltzmann law and its applications in thermal radiation
  • Learn about the impact of surface properties on emissivity
  • Explore methods for measuring solar radiation at different surfaces
  • Investigate the effects of atmospheric conditions on solar radiation absorption
USEFUL FOR

Students studying physics or environmental science, meteorologists, and anyone interested in the thermal properties of snow-covered surfaces.

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Homework Statement



Consider a snow-covered surface. Assume that the amount of solar radiation that reaches the top of the atmosphere is 1367 Wm-2. Given that 50% of this solar radiation is either absorbed in the atmosphere or reflected by clouds before reaching the the snow covered surface, how much of the original shortwave radiation is absorbed by the snow?

Homework Equations


Hr= (Area)(e)(5.67x10^-8 W/m^2K^4)(temperature)^4

The Attempt at a Solution


I seriously don't know how to.. please help me..
 
Physics news on Phys.org
What is "emissivity" of snow?
 
Bystander said:
What is "emissivity" of snow?

I searched it. it says that it ranges from 0.969 - 0.997
 

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