Monday, March 30, 2009

Travelling, Working and Analysing Weather

It's been a long while since I've reported any statistical analysis of late. In fact, I've even managed to debunk a couple of my own statistical analysis on Australia's weather. I've been travelling to Europe a couple of times, working hard in my own buiness that I have set up and of course, am continuing to analyse Australian weather data patterns.

My analysis in this area is a lot stronger than has been reported on this blog, and I intend on producing almost all of it in the next week or two. That means stay tuned for some very interesting analysis on Australain weather including full temperature, cloud, and sun analaysis.

The results are quite dramatic and will hopefully cause a big discussion point. Some of the analysis is semi-repeated from analysis that has been put out here previously, but lots of analysis, especailly at the end, will be brand new and no doubt extremly interesting to many. But to start off with, I am going to give a repost of my maximums and minimums post done almost two years ago. See you real soon!

Maximums and Minimums

The world is heating up. One thing is for sure, is that there is scientific consensus on this issue! Analysis of maximum and minimum temperature have proven it. Both have gone up significantly world wide, and also too in Australia.

The maximum is used as a measure of how hot we are getting during the day, whilst the minimum is a measure of how cold we get during the night. But are they good variables to use as a measure of average temperature?

Maximum and minimum temperatures occur at different times of the day, often by large amounts when in different seasons. Surely a better measure would be to keep the time constant and see if the temperature has increased at that (and other) specific times?

But unfortunately, there doesn't seem to be a whole lot of good data lying around for this type of analysis. A large exception to this is Australian data. Whilst there is not as many time based data as maximum and minimum data, I feel that statistical analysis on the raw data is by far more advantageous than doing statistical analysis on a statistic (which is derived from the raw data).

So why has there been no scientific analysis on time based temperatures? For me it seems very strange that we can spend billions of dollars on global warming, yet still have not done the proper statistical analysis on temperatures?

The answer is simple. There is no reason to do further analysis on temperatures. We have already proven and clearly show that maximum and minimum temperatures are increasing - quite dramatically in fact. As we said earlier, there is scientific consensus on this. The world is heating up and this is beyond doubt.

So why do more analysis on something that is crystal clear and proven beyond recognition? So, naturally, noone has.

Hence we are stuck in a scientific world where we are spending billions of dollars on what will happen when the world heats up, and what we can do about it, yet have not done a full statistical investigation about how the world is heating up.

We know why the world is heating up (Co2 emissions, right?). We know who (humans of course). We know where (the entire world, especially where there is ice). We know what (our pagan earth). We even know when (now, and the devastating effects it will have on our children's children).

But we do not know how. We only know that maximum and minimum temperatures are increasing.

But as most scientists will argue, this is plenty of evidence to prove that we are warming up during the day and at night. In fact, evidence suggests that minimum's are increasing at an even greater rate than maximum temperatures (which lead some scientists to believe in the urban heat island effect etc.).

Whilst most will say that the maximum temperature is a reasonable statistic to relate to average temperature during the day (time based temperatures is obviously better), how good does the minimum temperature relate to the average temperature at night?

Maximum temperatures occur generally when the sun is at it's hottest. Well at least when we feel it the most. Generally this is around 3pm, but changes dramatically in the different seasons and weather conditions. 3pm is almost the middle of the day. It's a little later than the middle, and maximums occur a little later than the middle due to the atmosphere warming up (by the sun). Still, we as civilians, are always interested in the maximum predicted temperature by the weather forecasters as a reference to how hot tomorrow will be.

But when looking at minimum temperatures, the issue is different. As a general rule, as soon as the sun sets we start losing heat in the atmosphere and the temperature will slowly subside. It will keep going down and down until, you guessed it, the sun warms up the atmosphere and then rises.

So the minimum temperature will occur right at the end of night time - the period shortly before light. Is the minimum temperature therefore a good representation of night temperatures? Would you think that taking the temperature at sunset would be a good representation of how hot the day is?

The answer is quite clearly no. Whilst we can suggest that maximum temperatures is a reasonable (although not fantastic) statistic when it comes to it's relation with average daytime temperatures, the minimum temperature is a terrible representation of how cold a certain night is.

This being for a couple of reasons. One; in that it is not generally the minimum temperature around the middle of the night, and two; in that it is actually influenced by the sun.

The what? the sun? How on earth can the minimum temperature be influenced by the sun?

Well it does. A warmer sun would heat up the atmosphere at a greater rate, just at the time where we would normally achieve a minimum temperature. Warmer days (thanks to a hot sun!) would result in hotter nights. Maximum and minimum temperatures are related and both are quite dependent on the strength of the sun.

So what has any of this got to do with global warming? Well, tomorrow, we will show you exactly why minimum temperatures are a poor statistic in measuring overnight temperatures and will prove the suns influence and changing behaviour over time.

In short, we will prove to you that global warming - the increase in maximum and minimum temperatures - is primarily due to increases in solar radiation.

And you don't want to miss that!

1 comment:

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