In Part Two, we looked at the beginnings of a very simple 1-d model for examining how the atmosphere interacts with radiation from the surface. Simplification aids understanding so the model has some fictious gases which absorb radiation – pCO2 (pretend CO2) and pH2O (pretend water vapor). We saw that as the concentrations of pCO2 [...]
Archive for January, 2011
Understanding Atmospheric Radiation and the “Greenhouse” Effect – Part Three
Posted in Atmospheric Physics on January 30, 2011 | 47 Comments »
Understanding Atmospheric Radiation and the “Greenhouse” Effect – Part Two
Posted in Atmospheric Physics on January 23, 2011 | 50 Comments »
In Part One I said: In the next part we will consider more advanced aspects of this subject. However, although that is where we are heading, first I want to look at a very simple model and progressively increase its complexity. It may be illuminating. The discussions on the Radiative Transfer Equations at the very [...]
The Cool Skin of the Ocean
Posted in Ocean Physics on January 18, 2011 | 82 Comments »
In the ensuing discussion on Does Back Radiation “Heat” the Ocean? – Part Four, the subject of the cool skin of the ocean surface came up a number of times. It’s not a simple subject, but it’s an interesting one so I’m going to plough on with it anyway. Introduction The ocean surface is typically something like [...]
Does Back Radiation “Heat” the Ocean? – Part Four
Posted in Climate Models, Ocean Physics on January 6, 2011 | 382 Comments »
In Part One we saw how the ocean absorbed different wavelengths of radiation: 50% of solar radiation is absorbed in the first meter, and 80% within 10 meters 50% of ”back radiation” (atmospheric radiation) is absorbed in the first few microns (μm). This is because absorption is a strong function of wavelength and atmospheric radiation is centered [...]
Heat Transfer Basics – Convection – Part One
Posted in Atmospheric Physics, Basic Science on January 2, 2011 | 36 Comments »
A while ago we looked at some basics in Heat Transfer Basics – Part Zero. Equations aren’t popular but a few were included. As a recap, there are three main mechanisms of heat transfer: conduction convection radiation In the climate system, conduction is generally negligible because gases and liquids like water don’t conduct heat well at all. [...]
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