Climate Lab Book
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This blog is an experiment in 'open source' climate science. It is written by climate scientists, but open to anyone to see.
Climate Lab Book
2y ago
This blog post is a short summary of key points that are of current relevance to society from the physical science of climate change. It is based on the headline statements of a report published in 2021 by the Intergovernmental Panel on Climate Change (IPCC). The IPCC is a United Nations body responsible for providing ..read more
Climate Lab Book
2y ago
The recent 6th Assessment Report of Working Group I of the Intergovernmental Panel on Climate Change (IPCC) is the result of years of diligent assessment of the latest scientific evidence on climate change building on several previous similar assessments. It was written by hundreds of authors, and openly reviewed by thousands of experts. Every word ..read more
Climate Lab Book
2y ago
The latest Intergovernmental Panel on Climate Change (IPCC) report states that the global water cycle will intensify with continued global warming. This means fewer rainy days, but with more intense rain over many land regions, and more variability generally. More dry days and longer dry spells have the potential to lead to negative impacts on ..read more
Climate Lab Book
2y ago
The recent IPCC AR6 WGI report summarises the state of knowledge of physical climate science, but the final version of the Summary for Policymakers (SPM) did not include a figure showing a range of indicators of our warming planet. An earlier draft of the SPM included a figure like that below which aimed to put ..read more
Climate Lab Book
2y ago
To avoid reaching global temperature levels such as 1.5°C there is a limited amount of carbon dioxide we can emit into the atmosphere. We are rapidly using up this ‘carbon budget’, mainly by burning fossil fuels and deforestation. This carbon budget uses data from the latest IPCC 6th Assessment Report, and assumes a 50% chance ..read more
Climate Lab Book
2y ago
The figures in the IPCC AR6 WGI SPM are a huge improvement over previous reports. However, one minor quibble is with the lack of observations shown. This brief post makes a figure available which is based on IPCC AR6 WGI SPM Figure 8, but with some observations added to show how global surface temperature and ..read more
Climate Lab Book
2y ago
The Working Group I (WGI) component of the IPCC 6th Assessment Report (AR6) has been released. One key development since AR5 was the involvement of professional graphic designers in creating the figures for the Summary for Policymakers (SPM). As a result, the graphics are clear and usable, having been user-tested through several design iterations. The ..read more
Climate Lab Book
2y ago
Record extreme temperature events are increasing in frequency as the climate warms. Several of these records have been surprising, in that they have been far above the previous record event for that location. Longer and earlier records, often possible through data recovery from undigitised archive material, would help quantify the risks of such record extreme ..read more
Climate Lab Book
2y ago
On 27th February 1903 a major windstorm hit the UK and Ireland, known as Storm Ulysses. The 20th Century Reanalysis (20CRv3) includes a modern reconstruction of the storm, created by assimilating available observations of surface pressure into a state-of-the-art weather forecast model. There is a problem however. The number of available observations over north-west Europe ..read more
Climate Lab Book
2y ago
The recent 6th Assessment Report of Working Group I of the Intergovernmental Panel on Climate Change (IPCC) is the result of years of diligent assessment of the latest scientific evidence on climate change building on several previous similar assessments. It was written by hundreds of authors, and openly reviewed by thousands of experts. Every word ..read more