Chapter 10, Problem 10.132SP

Interpretation Introduction

Interpretation:

Whether the earth’s surface experienced warmed condition due to increased levels of greenhouse gases or not and the extent such temperature should be determined.

Concept introduction:

There are several molecules that absorb the IR radiation and thus contribute to heat trap and resultant greenhouse phenomenon. The most prominent gases include ${\text{H}}_{\text{2}}\text{O}$ vapor, ${\text{CO}}_2$, ${\text{CH}}_4$, ${\text{N}}_{\text{2}}\text{O}$, $\text{CFC-12}$, ${\text{SF}}_{\text{6}}$ and other halogenated gases. The emission of ${\text{CO}}_2$, $\text{CFC-12}$ and ${\text{CH}}_4$ is a direct consequence of human activities such as combustion of fossil fuels, usage of aerosols and air conditioners. The former leads to the build-up of ${\text{CO}}_2$ while the latter two contribute toward ozone layer depletion. This makes UV radiation approach earth and threatens the existence.