{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lec20 - 1 1 ATM 6 Lecture#20 Cort Anastasio Atmospheric...

Info iconThis preview shows pages 1–3. 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 Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 1 ATM 6, Lecture #20 Cort Anastasio Atmospheric Science Program University of California - Davis The Climate Machine Part I: Earth’s Energy Balance and the Greenhouse Effect 2 Climate and Weather • What is “climate”? – The average behavior of the atmosphere – Includes temperatures, rainfall frequency and amounts, flooding, etc. – Includes different spatial scales (e.g., Davis climate versus global climate) and different temporal scales (e.g., weekly vs. annual avgs) • What is “weather”? – _____________________________________________ – E.g., current Davis weather: cloudy skies and 58 F • “Climate is what you expect and weather is what you get” • The “climate machine” – Earth’s climate depends on the energy balance (energy in and out) – Many components to this “machine” • Atmosphere, oceans, land, organisms, ice and snow… 2 3 Energy from the Sun (www.seds.org/nineplanets/nineplanets/sol.html; images from NASA) • Size – 1.4 million km in diameter – 2.0 x 10 30 kg (75% H 2 , 25% He) • Energetics – Core T ~ 15,000,000 K – Surface T = 5800 K (~ 10,000 F) – Energy comes from nuclear fusion • Sun’s output is major source of energy for Earth 4 Radiation from the Sun • Sun radiates (emits) like a “blackbody” at 5800 K • Emissions are “electromagnetic radiation” (i.e., photons)(i....
View Full Document

{[ snackBarMessage ]}

Page1 / 6

lec20 - 1 1 ATM 6 Lecture#20 Cort Anastasio Atmospheric...

This preview shows document pages 1 - 3. Sign up to view the full document.

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