In Roger Pielke Jr.'s book 'The Honest Broker' (2007) he discussed different roles a scientist can adopt when giving advice to policymakers. The concept was also heavily used to allow for different views regarding climate change.

In 2024, that honest broker is now for sale. 🤐

Sometimes, people try to argue that the global warming signal is an artifact of the bias adjustments & other quality control processes applied to weather station data.

That is easily shown to be untrue. The net effect of the adjustments on the global land average is very small.

Here's a late GISTEMP update. March 2024 finishes 1.39°C above the '51 - '80 baseline.

A mighty dataset 'Satellite-based time-series of sea-surface temperature since 1980 for climate applications'

nature.com/articles/s4159…

ERA5-Land annual mean temperature anomalies for the Contiguous US, relative to 1991 - 2020. I have added the USCRN record which - according to skeptics - shows no warming.

ERSSTv5 North Atlantic sea surface temperature anomalies, but without the trend being artificially removed like in the AMO index.

[1/9] A holistic view of the Ocean heat content in 2023 is provided by looking at in situ, satellite data (CERES, and Geodetic: altimetry minus GRACE) and CMIP6 model simulations, now published in Nature Reviews Earth & Environment Nature Reviews Earth & Environment 🌈, doi.org/10.1038/s43017…

OISSTv2 global monthly anomalies updated to March 2024. March finished 0.53°C above the '91 - '20 baseline, putting it in 9th place.

Update to ERA5 global mean 2m air temperature on a '51 - '80 baseline. March 2024 is +1.41°C above that baseline.

The rate of warming has increased notably over the past 15 years. This is not just natural variability – there is increasing evidence that the world is now warming faster than it has since 1970.

However, this should not come as a surprise; acceleration is exactly what our models…

Nothing illustrates the vacuity of what passes for climate scepticism in the UK than Matt Ridley retweeting Toby Young who publishes a piece by Chris Morrison based on total bollocks.

Mit einem Gebietsmittel von 7.5 °C war der März 2024 in Deutschland der wärmste März seit 1881 und 4 °C wärmer als die vieljährigen Märzmittel 1961-1990.

the new new pause: no 'new pause' articles on WUWT for 9 months. how long with this pause go?

This might be the worst possible way to present temperature data. ⤵️

twitter.com/1234Fit/status…

But luckily the experts at the Irish Meteorological Service provide us with a solid presentation.

met.ie/state-of-the-i…

Sea level at Fort Denison, one of the most important climate series along with the lower troposphere temperature and GISP2.

Showing acceleration. 🤷‍♂️

Presenting data in an appropriate and meaningful way - as in this plot - is taught at school in maths and science.
Or at least it was when I was there.
So how many AGW Deniers skipped maths and science ?

Looks like Jim Steele is still at it, trying to save the ridiculous & already much-ridiculed 'Cold Truth' climate denial movie. He's blocked me, but as a rebuttal to this point—twitter.com/JimSteeleSkept…—feel free to use this tweet of mine x.com/priscian/statu… #ClimateBrawl

Who'da thunk it? 😁

Jim Steele Maarten Keulemans The 1st figure is from Ljungqvist 2010 dx.doi.org/10.1111/j.1468…, ending in 2000. If we take its data (NH extratropical proxies) & plot it on the same baseline as a current land+SST series w/ the same coverage, we see that current temps are higher than L2010's MWP max (2nd figure).