Ocean101-Ch07 - 1 Chapters 7 & 8 Chapters 7...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Chapters 7 & 8 Chapters 7 & 8 Atmospheric and Oceanic Circulation Atmosphere and ocean are Atmosphere and ocean are one interconnected system one interconnected system Changes in atmosphere affect ocean Changes in atmosphere affect ocean Changes in ocean affect atmosphere Changes in ocean affect atmosphere The system is driven The system is driven by by the Sun the Sun s energy s energy Chapter 7 - Atmospheric Circulation Chapter 7 - Atmospheric Circulation 1. 1. Composition & properties of the atmosphere Composition & properties of the atmosphere 2. 2. Atmospheric circulation Atmospheric circulation Uneven solar heating & latitude, & seasons Coriolis effect & atmospheric circulation cells 3. 3. Wind patterns Wind patterns 4. 4. Storms & Storms & extratropical extratropical cyclones cyclones 5. 5. Climate Climate 1. 1. Composition & Properties Composition & Properties of the Atmosphere of the Atmosphere Note that this table shows the composition of dry air. Air can contain up to 4% water vapor. Total (N 2 +O 2 ) = 99.03% ! Most of the rest is argon Low %, High importance See Fig. 7.1, p. 148 2 Composition & Properties of the Atmosphere Composition & Properties of the Atmosphere Water vapor Water vapor (H 2 O molecules) can be as much as 4% of the volume of the atmosphere Remember, the properties of water are important to heat transfer and circulation (heat capacity, latent heats, etc) Evaporation and condensation occur at the atmosphere-ocean interface ! Regulates T and causes convection in the atmosphere And as well see, currents in the surface of the ocean are a direct result of atmospheric wind belts Ozone ( Ozone ( O 3 ) Mostly occurs as layer in upper atmosphere (Near surface = smog) Ozone helps absorb ultraviolet (u.v.) radiation Ozone hole (depletion) has been a problem Composition & Properties of the Atmosphere Composition & Properties of the Atmosphere Chlorine from CFCs acts as catalyst catalyst : Destroys ozone without being destroyed in the process. A single Cl atom can destroy 100,000 O 3 molecules! Composition & Properties of the Atmosphere Composition & Properties of the Atmosphere Carbon dioxide (C Carbon dioxide (C O 2 ) Used by plants in photosynthesis Good absorber of infrared (i.r.) radiation ! CO 2 is a greenhouse gas greenhouse gas * Anthropogenic additions (by humans) are a problem (e.g., burning fossil fuels such as oil, gas, coal releases CO 2 etc) * CO 2 readily transmits short (u.v.) wavelengths while absorbing long (i.r.) ones ! T increases 3 4 Atmospheric CO 2 is on track to double its pre-Industrial level by the end of the 21st century Atmospheric CO 2 is on track to double its pre-Industrial level by the end of the 21st century 5 The rise in atmospheric CO 2 correlates to a rise in temperature (global warming)....
View Full Document

This note was uploaded on 01/09/2012 for the course OCEA 101 taught by Professor Gwynethjones during the Winter '12 term at Bellevue College.

Page1 / 19

Ocean101-Ch07 - 1 Chapters 7 & 8 Chapters 7...

This preview shows document pages 1 - 6. Sign up to view the full document.

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