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Welcome to WoodForTrees.org. This site hosts some C++ software tools for analysis and graphing of time series data, and an interactive graph generator where you can play with different ways of analysing data.

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These tools could in theory be used for any time series but the main rationale for their existence is for analysis of historical climate data. The idea is to allow you to go to the source data and look for answers to questions like:

Has the Earth got warmer recently?
Is it still getting warmer?
Is CO₂ the only explanation for what has happened?
Are there solar cycles involved?
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If so, how much do they account for?
What is likely to happen next?

It's not the place of this Web site (or anyone else) to tell you the answers, even if I could! This is just a tool to help you dig into the data to help you form your own opinions. Whatever you decide the most important thing is that you learned what the issues in analysis are and how to test your ideas against real data.

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However, with sharp tools comes great responsibility... Please read the 熊猫ⅴpn安卓下载 on things to beware of - and in particular on the problems with short, cherry-picked trends. Remember that the signals we are dealing with are very, very noisy, and it's easy to get misled - or worse still, to mislead others.

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This website is a self-funded personal project by Paul Clark, a British software developer and practically-oriented environmentalist and conservationist. You can provide support through my Charity Tip Jar if you like.

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I started this site in 2008 because I wanted to dig underneath what seemed like extreme claims and counter-claims in the "Global Warming Debate". Ten years on, it now seems clear to me that CO₂ is indeed the primary driver of global warming, which is proceeding at roughly 1.5°C per century, but with some interesting short and long-term cycles overlaid. These cycles can produce shorter-term periods of both flatline and rapid increase, which get both 'sides' over-excited.

However, please remember this is only historical data, and "past performance is not necessarily a guide to the future". Climate models which do predict the future take into account positive and negative feedbacks such as water vapour, clouds, albedo and frozen methane, and to my mind the most (only?) interesting discussion in this field is around the sign and magnitude of those feedbacks. What this site can do is act as a check on those models and illustrate how the climate system has reacted to past forcings.

As I said back in 2008, as a life-long Green I think a shift to a efficient and sustainable way of life is a Good Thing in any case, and I'd invite my fellow engineers to use their energies to help solve our many inefficiencies.

Best wishes

Paul

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I welcome constructive suggestions of new algorithms or datasets I could add, and in particular help from experts if I've got any of the maths badly wrong (which is quite possible).

Mail me at 'paul' at this domain. Flames will be silently extinguished.

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Adding Covid-19 daily data

18th March 2023:

I thought it might be useful to use WoodForTree's existing tools to analyse Coronavirus cases. I'm importing the CSSE daily data from their github and selecting for countries. It's a work in progress, but it does allow you to do things like this: Log derivative of Covid-19 cases in Europe.

Please feel free to suggest any other data sources or treatments that would be interesting to add.

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WFT's 10th birthday and a new home

6th March 2018:

I started WoodForTrees in early 2008 to explore climate data myself, and a few people have found it interesting and useful since, despite a lot of mis-use of trends!. In celebration - and because the old server is too knackered and expensive - WFT has moved to a new server... Please report any weirdness!

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Fixing lots of out-of-date data

30th October 2017:

I've had a general spring (autumn?) clean of a number of datasets which had got out of date because their sources had moved, including UAH, Hadcrut4, GISTEMP, RSS, SIDC-SSN and NSIDC Artic Sea Ice. Thanks to the folks who have pointed out problems!

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I have now added UAH6.0Beta alongside the previous UAH5.6 release, so they can be compared. WTI is still using UAH5.6 until UAH6.0 is fully released.

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Charity Tip Jar for the Woodland Trust

1st January 2012:

A number of people have kindly suggested I provide a 'tip jar' as a reward for keeping WFT running, but I've always been uncomfortable with taking any payment myself because it's crucial that WFT is seen as independent of any agenda-driven funding.

However, I've decided to open a Charity 'tip jar' in favour of the British Woodland Trust. Please visit JustGiving.com/WFT if you find WFT useful and would like to provide encouragement.

Many thanks,

Paul