This presentation is the property of its rightful owner.
1 / 5

# Simple Model of the greenhouse effect PowerPoint PPT Presentation

Simple Model of the greenhouse effect. Includes atmosphere layer. Atmosphere layer passes all solar radiation. Atmosphere layer absorbs all IR from Earth. Atmosphere layer radiates in the IR up to space and down to Earth surface. Surface absorbs solar radiation and IR from atmosphere.

Simple Model of the greenhouse effect

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

### Simple Model of the greenhouse effect

• Includes atmosphere layer.

• Atmosphere layer passes all solar radiation.

• Atmosphere layer absorbs all IR from Earth.

• Atmosphere layer radiates in the IR up to space and down to Earth surface.

• Surface absorbs solar radiation and IR from atmosphere.

### Simple Model of the greenhouse effect

Tatm = 257 K Tearth = 303 K = 86° F

Earth is too cold without greenhouse gases, and too warm with them.

What is missing?

.

### What if the atmosphere transmits some of Earth’s radiation?

G-x

Tearth = 288 K = 15 C = 59 F

Lapse Rate

The lapse rate is the rate at which temperature drops with altitude.

This rate is about 6 K / km or 3.6 F / 1000 ft.

So, if you climbed 4000 feet in the White Mountains, you would experience a 14 F drop in temperature.