Energy and the Atmosphere
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National Aeronautics and Space Administration Energy and the Atmosphere www.nasa.gov Dr. Lin H. Chambers, NASA Langley Research Center, Hampton, VA New Orleans, Oct. 29, 2010
description
National Aeronautics and Space Administration. Energy and the Atmosphere. Dr. Lin H. Chambers, NASA Langley Research Center, Hampton, VA New Orleans, Oct. 29, 2010. www.nasa.gov. Our Natural Place … in the Big Picture. Mars. Earth. Venus. Mercury. Not to Scale. - PowerPoint PPT Presentation
Transcript of Energy and the Atmosphere
National Aeronautics and Space Administration
Energy and the Atmosphere
www.nasa.gov
Dr. Lin H. Chambers, NASA Langley Research Center, Hampton, VA
New Orleans, Oct. 29, 2010
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Mars
Venus
Earth
Mercury
Our Natural Place … in the Big Picture
Not to Scale
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Mars Ts= -113 to 0 C
Venus Ts=450 C!
Earth
Mercury: Ts=425 C
Our Natural Place … in the Big Picture
425 C ~ 800 F
“Too hot!”“Too cold!”
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Mars Ts= -113 to 0 C
Venus Ts=450 C!
Earth: Ts= -18 C*
Mercury: Ts=425 C
Our Natural Place … in the Big Picture
425 C ~ 800 F *No atmosphere
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Mars Ts= -113 to 0 C
Venus Ts=450 C!
Earth: Ts= 15 C*
Mercury: Ts=425 C
Our Natural Place … for Life
425 C ~ 800 F *With atmosphere
“Just right”
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What Determines a Planet’sTemperature?
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EARTH'S ENERGY BUDGET
Incomingsolar energy100%
Reflected byatmosphere
6%
Reflectedby clouds20%
Reflected fromearth's surface4%
Absorbed by atmosphere 16%
Conduction andrising air 7%
Absorbed by clouds 3%
Radiated to spacefrom clouds andatmosphere
64% 6%
Radiated directly to space from earth
Carried to clouds and atmophere by latent heat in water vapor 23%
Radiation absorbed by atmosphere 15%
Absorbed by land and oceans 51%
Earth’s Energy Budget 7
The Energy Budget
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The Energy Budget - An Analogy
Winter Summer
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The Energy Budget - V.2
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The Energy Budget - Location
Top of Atmosphere (TOA)
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The Energy Budget - Location
Surface (SFC)
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The Energy Budget – Direction
Down
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The Energy Budget – Direction
Up
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Shortwave (SW)or Solar
Shortwave (SW)or Solar
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The Energy Budget - Wavelength
Shortwave (SW)or Solar
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The Energy Budget - Wavelength
Longwave (LW)Or Infrared
(Heat)
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The Final Frontier
In atmosphere budget
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The Energy Budget - Data
http://mynasadata.larc.nasa.gov
Click Data Access
Choose Live Access Server
Choose Data Parameter
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The Energy Budget - Data
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TOA Shortwave Down
What variables affect this?
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TOA Shortwave Down
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Surface Shortwave Down
What variables affect this?
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Surface Shortwave Down
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Surface Shortwave Up
What variables affect this?
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Surface Shortwave Up
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Surface Shortwave Up
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Surface Longwave Up
What variables affect this?
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Surface Longwave Up
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TOA Longwave Up
What variables affect this?
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TOA Longwave Up
How We Measure
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The CERES Instrument
3 telescopes
• Shortwave (SW)
• Total spectrum (TOT)
• Window channel (LW)
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Satellites Carrying theCERES Instrument
•TRMM Satellitelaunched 1997
•TERRA Satellitelaunched 1999
•Aqua Satellitelaunched 2002
• NPP (2011)• NPOESS (201?)
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First Year of CERES Data
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How we Validate
•Lots of high tech methods, but also
•Student involvement:
Observe clouds at the time of the CERES satellite overpass
The CERES
S’COOL Project
http://scool.larc.nasa.gov
Observe from anywhere
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