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Lecturer in Atmospheric Science, University of St Andrews. Large-scale weather & climate variability, prediction & change. FRMetS. simonleewx.com
Simon Lee
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Global CO2 emissions have plateaued since 2013, leading to a slower growth in atmospheric CO2 than would have otherwise been the case. In a new analysis at The Climate Brink, I've taken look at what would have happened if emissions had continued to grow: www.theclimatebrink....
In our seasonal forecast from 1 June 2026, we are introducing the Relative Niño indices. Recommended by @wmo-global.bsky.social, this is an additional measure of El Niño strength alongside more traditional Niño 3.4 SST anomalies. It's expected to be readily adopted. ➡️ www.ecmwf.int/en/about/med...
1d
6h
ECMWF
Zeke Hausfather
Can everyone just calm down a bit? We’re only 7 days into June!
An estimated 22,596 km² of the UK exceeded the previous May record of 32.8ºC, based on HadUK-Grid provisional data released today, with a peak temperature of 35.12ºC. By comparison, the July 2022 heatwave had an estimated 28,658 km² exceed the old record of 38.7ºC.
3d
Not the picture I would have chosen for a heatwave. 😒
20h
5d
Simon Lee
David Ho
MetJam
Read our latest thoughts... www.metoffice.gov.uk/blog/2026/wa...
Weather regime forecasts on simonleewx.com updating now – apologies for the missing few days, which was due to a small bug 🐛
The Greenland High regime has become more frequent and persistent in recent summers, while there has been a decrease in the PT regime frequency (doi.org/10.1029/2025...) – will this become another GH dominant summer, or just a brief June blip?