Simon Lee

Two exciting PhD projects in atmospheric & climate science available through @iapetusdtp.bsky.social at @uniofstandrews.bsky.social @earthscista.bsky.social ☀️🌧️🌀🏴󠁧󠁢󠁳󠁣󠁴󠁿 Visit iapetus.ac.uk/studentships/ for full information! @drmichaelbyrne.bsky.social @hcbloomfield19.bsky.social

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Renewables dominating the electricity supply for Great Britain today 🌬️ ☀️ We need to shout about this more — I don’t think it’s appreciated widely enough how much progress has been made. Decisions to burn more fossil fuels are backward-looking and costly. grid.iamkate.com

I'm seeking a Postdoctoral Researcher to join my group at OU to do subseasonal prediction work on cold air outbreaks. Find out more about the position and apply at the following link: apply.interfolio.com/196325 Also, please share with your network and anyone who may be interested.

STORM BOELO at 1540 UTC. EUMETSAT.

Rain for almost the entirety of the UK simultaneously today as Storm Boelo arrives 🌧️

As Storm #Boelo tracks across/close to N/NW Scotland on Saturday night, its central pressure is likely to be 946-949 hPa. The current UK October low MSLP record is 947.9 hPa (Storm Amy 2025). There's a chance we could beat this... just one week after near-record high MSLP! bsky.app/profile/danh...

🎉 20 years of TIGGE. TIGGE has enabled researchers worldwide to compare ensemble forecasts, improve weather prediction, and better understand forecast uncertainty. Proud that ECMWF has played a key role as one of the archive hosts for this international collaboration. www.ecmwf.int/en/about/med...

This is a bit of a stunner from #MeteorMN2-3! The UK sandwiched between #StormAusten to the SW and another low to the NE. Crossposted with @openvibe.social

METOP-C, 1010 UTC Overpass: WESTERN EUROPE to NORTH AFRICA. @tigermoth2002.bsky.social

The Heatwave That Never Was: Assessing Scotland’s Vulnerability to Plausible Extreme Heat Exciting PhD project through @iapetusdtp.bsky.social to be based at Newcastle, with supervision from @hayleyjfowler.bsky.social, me, @edhawkins.org & @davidharkin.bsky.social iapetus.ac.uk/studentships...

The new gas field isn’t going to bring down your bills. Gas is bought & sold globally, so the reality is, fossil fuels controlled by dictators have Britain in a chokehold til we fully embrace gas-free driving & heating and cut the link between electricity and gas. (🧵 1/2)

Linking stratosphere–troposphere coupling biases to Annular Mode predictability and midlatitude impacts in subseasonal forecast systems Preprint of our latest @wcrpclimate.bsky.social SNAP project community paper led by Chaim Garfinkel now online doi.org/10.5194/egus...

The warming will continue until we reach net zero emissions. At which point, we will need to live with whatever climate we’ve ended up in. The sooner we reach net zero, the less extreme that climate will be, and the easier and less costly it will be to adapt to it.

One of those loops that's nearly impossible to watch to the end without saying "phwoar" out loud

England stayed arid in September 2026 with dry soils/limited rainfall but wetter in N Ireland & Scotland with depleted groundwater+reservoirs, low river flows in all but far northwest UK so sustained rainfall needed to recharge water resources - @ukceh.bsky.social: nrfa.ceh.ac.uk/sites/defaul...

Analysed as 931 hPa on 12Z ASXX, with a fall in central pressure of 49 hPa in 24 hours, this exceptionally deep low near Iceland more than satisfies explosive cyclogenesis 🌀 Potentially a record deep low for October in Iceland with 935 hPa observed on land... 📉 bsky.app/profile/meto...

Remains of former Hurricane Isaias in motion for 4 hours until 14201 UTC. EUMETSAT.

Would a Godzilla La Niña (if there is such a thing) get the same level of coverage? La Niña causes climatic extremes around the world. Just because it represents a local cooling and a dip in global mean temperatures doesn't mean it isn't impactful. Or are the impacts of El Niño quantifiably worse?

The automated captioning on my lecture recording struggling with "easterlies" 🐣

Save the date: the 12th UK National Climate Dynamics Workshop is coming to @uniofstandrews.bsky.social! 22 & 23 June 2027 www.rmets.org/event/12th-u...

Atmospheric circulation over land in a changing climate 💨🌎🌡️ PhD @uniofstandrews.bsky.social w/ Chris Taylor and @simonleewx.com suitable for quant students (physics, math, meteorology). Pls share! iapetus.ac.uk/studentships... @earthscista.bsky.social @iapetusdtp.bsky.social @ukceh.bsky.social

METOP-B, 0938 UTC Overpass: UK and IRELAND. @petagna.bsky.social @simonleewx.com @drgeoffsmith.bsky.social @rodneyforster.bsky.social @metoffice.gov.uk @eumetsat.int @copernicusecmwf.bsky.social @wgoodf.bsky.social @weathermizu.bsky.social @fifeweather.co.uk @tigermoth2002.bsky.social

Interactive, browser-based simulation of ocean waves in the thermocline using @visualpde.com, based on eq beta plane model: visualpde.com/sim?mini=KAN... Add height or current to make Rossby, equatorial Kelvin, & coastal Kelvin waves relevant to El Niño. Compare with & without rotation.

Happy to have contributed some thoughts on El Niño and the polar vortex to this @usatoday.com article www.usatoday.com/story/news/w... also featuring @drahbutler.bsky.social

Some satisfying isolated Altocumulus lenticularis looking towards Angus and the Cairngorms from St Andrews earlier, with a lower layer of broken Cumulus and higher Cirriform formations.

Outrageous warm air advection! istheukhotrightnow.com

An exceptionally deep extratropical cyclone for the time of year just west of Ireland. 953 hPa on the 12 UTC Met Office analysis. Helping drive strong warm advection to its east which has brought exceptionally high temperatures to parts of the UK yesterday and overnight ahead of the cold front.

Only 40 years ago, average winter daily minimum temperatures were below freezing across Scotland.

never expected to see Kelvin wave in a newspaper headline www.theguardian.com/us-news/2026...

North Atlantic Conveyor: GeoColour - True Colour daytime, multispectral IR at night - 27 Sep 2026 - to 0640 UTC. In this loop, the Nor'easter affecting the NE coast of the US currently is clearly visible @petagna.bsky.social @simonleewx.com @drgeoffsmith.bsky.social @rodneyforster.bsky.social

I’ve updated the long-running (starts 1866) CRU Southern Oscillation Index (SOI). This lets us compare the currently developing El Niño with earlier events including 1877-78. 2026 has developed very quickly, similar to the 1997-98 one. Thick line is 3-month running mean, with y-axis reversed.

In the eastern North Pacific south of Mexico, Hurricane Polo has rapidly intensified from a tropical depression to a major hurricane in just over a day and continues to barrel toward category 5 strength.

GEFS is basically going for the Pacific Trough regime for the full subseasonal run. El Niño's North Pacific teleconnection activated and locked? simonleewx.com/gefs_north_a...

#Gibraltar - 19/09 - after a mostly cloudy and breezy start, with any showers passing to our South in the Strait and over Morocco, we now have plenty of sunshine with a detached Lenticular-type Levanter forming as the Easterly strengthened - at 12:30pm, the temp is 24C in a moderate or fresh wind.