WordPress’s online blog hosting service just released some of their statistics. I’ve just been browsing through them, and have noticed one or two things.
- For their daily signups, there seems to be a strong weekly cycle. The minima seem to occur Friday or Saturday; I guess it is a TGIF(S) phenomena? It’s only reasonable that people would be away from their tin gods more on the weekends. Also, it reminds me of the Hawaii observations of carbon dioxide increase, but on a much shorter timescale.
- For posting activity, the same pattern occurs, but there is more “CO_2 increase” going on, and it actually looks even more like the Mauna Loa observations.
For those unfamiliar with the Mauna Loa observations, you’ll note a yearly oscillation within the general upward trend. Some people call it Gaia breathing, or the Earth breathing. Basically, there is a significant difference in landmass between the northern and southern hemispheres, and the plant life on land (and the microbes in the soil) is much less in the southern hemisphere. Also, land biota dominate over oceanic species in their influence on oxygen/carbon dioxide variations in the atmosphere. So in a northern winter there is less net carbon dioxide uptake by plant life in the winter; in the summer the plants get more sunlight, the deciduous trees have their leaves out, and mid to high latitude plant life has its spring bloom, so the uptake of carbon dioxide is much larger.
Here is an animation of the planet breathing from the NASA Ames Research Centre. It is part of a study of the role of microbes in the soil on the greenhouse gas budget, but it does show the net transfer of carbon dioxide between the surface and the atmosphere as “seen” from space.
So go the dangers of free association, pattern recognition, and Google.