Lecture 02

Lecture 02 - Lecture 2 Atmosphere Composition and Structure...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 2: Atmosphere Composition and Structure As with everything about planet Earth, the atmosphere composition and structure have changed dramatically over time.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Composition of the Earth’s Atmosphere The atmosphere is composed primarily of gases: – Nitrogen - N 2 (78%) – Oxygen - O 2 (21%) Noble gases - argon, neon, helium,… (1%) – Hydrogen - H 2 (.00005%) – Carbon dioxide - CO 2 (0.037 % - 370 ppm ) – Ozone - O 3 (0.01%) – Water vapor - H 2 O (0.25%) – Methane - CH 4 (1.7 ppm) There are also trace amounts of aersols (small solid particles and non-water liquid droplets).
Background image of page 2
Composition of the Atmosphere MAJOR GASES
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Changes in Atmospheric Composition Throughout Earth History QuickTimeª and a TIFF (Uncompressed) decompressor are needed to see this picture.
Background image of page 4
Sedimentary Rocks as a Record of Earth History and Climate Change QuickTimeª and a TIFF (Uncompressed) decompressor are needed to see this picture. Bryce Canyon National Park
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Origin of the Earth’s Atmosphere and Hydrosphere It is likely that gases (mostly hydrogen and helium) present when the Earth initially formed about 4.5 billion years ago
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 15

Lecture 02 - Lecture 2 Atmosphere Composition and Structure...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online