Archive for September, 2013

Feynman lectures Volume 1 made free access

September 29, 2013 2 comments

Fig. 23–6.Response of the atmosphere to external excitation. a is the required response if the atmospheric S_2-tide is of gravitational origin; peak amplification is 100:1. b is derived from observed magnification and phase of M_2-tide. [Munk and MacDonald, “Rotation of the Earth,” Cambridge University Press (1960)]

This is a welcome new facility. Well put together web site.


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Categories: History

Strong evidence for linear law removal of atmospheric carbon dioxide

September 25, 2013 Leave a comment

Figure 1


Figure 2

Figures 1 and 2 are demonstrating both northern[1] and southern[2] hemisphere decay from a Dirac injection[3] of a test signal. The consequent effect is very close to perfectly linear, proportionality between pressure and effect of pressure over more than an order of magnitude of data variation (hence linear law). This seems to destroy IPCC claim of a non-simple law. Deviation is <1%

In addition the effect is a simple low pass filter on all kinds of atmospheric carbon dioxide. A later article might cover this in detail.

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Anders Angstrom: Nocturnal radiation at various altitudes

September 20, 2013 Leave a comment

The curves bring out some interesting facts that deserve special consideration.
For ordinary values of the humidity, the effective radiation has a maximum at 1 to 4 km. altitude. An increase of the humidity or a decrease of the temperature
gradient shifts this maximum to higher altitudes. The effective radiation gradient
is consequently positive at low altitudes and negative at high altitudes. — A. Angstrom

Fig. 14 from paper 100 years ago by Anders Angstrom on LWIR emission. This shows families of curves grouped by two different lapse rates.

Note: This Daedal Earth blog article was rapidly produced to make the PDF available for citation elsewhere. Content may change later.

Sub-extract from Smithsonian Miscellaneous Collections, Volume 65, Number 3, published 1915. is A study of the Radiation of the Atmosphere

Physicist Dr Anders Angstrom was the son of physicist Dr Knut Anstrom (radiation instrument inventor) the son of physicist Dr Anders Angstrom after whom the wavelength unit the Angstrom is named. Confusion is understandable.

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High altitude atmospheric pressure and ozone, south pole

September 12, 2013 Leave a comment


Overlay of south pole satellite measured Ozone and 1 hPa air pressure model. (note: 3 day difference of dates, data availability)

It’s spring in the southern hemisphere, sunlight is starting to buzz the atmosphere as the long night ends. Ozone is always low then.

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Categories: temperature, weather

Northen hemisphere ice and snow area, first look

September 7, 2013 Leave a comment

Figure 1

Hemisphere area coverage of snow and ice for land and ocean. Early data has been excluded after discovering an anomaly with early daily sea ice data, excluded is early part which is every other day data.[1]

This is an experimental first attempt at creating a hemisphere ice coverage dataset.

Why? I don’t like hidden information, want to see for myself and perhaps shed more light on whatever is going on.

As with sea ice data there is a distinct increase in the amplitude of the annual cycle in recent years. No attempt has been made to produce a more regular annual cycle exclusion.

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Categories: analysis, sea ice

Collated EUMETSAT European monthly weather videos

September 4, 2013 4 comments


Image from the cold March 2013.

If you are new to these videos expect a revealation, how air moves, clouds stream, bubble.

Clouds are sometimes on seveal levels moving in different directions: we are looking through circulation cells from above, warm air travelling to the Arctic to shed heat and cold air spilling back on it’s journey towards the equator.

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Categories: education, Satellites, weather