Dr Rebecca Emerton
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rebeccalize.bsky.social
Dr Rebecca Emerton
@rebeccalize.bsky.social
1.1K followers 710 following 56 posts
Weather & climate scientist at @ecmwf.int 🌍coordinator of the C3S-WMO European State of the Climate report📈 - 2024 report out now: climate.copernicus.eu/esotc/2024

Also evaluate forecasts, from tropical weather🌀to flooding💧to heat 🥵

(she/her){own views}
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rebeccalize.bsky.social
Visited Helios at Basildon Park - a 7 m installation of the Sun hanging among the trees in the grounds, and with soundscapes that are real recordings from space. 1 cm of the image on the sphere represents 2000 km on the surface of the Sun! 🤩☀️✨ #SciArt
Photo of the Helios art installation - a globe hanging in amongst the trees with a detailed image of the sun, lit up in the dark. Close up photo of the Helios art installation - a globe hanging in amongst the trees with a detailed image of the sun, lit up in the dark. A photo of Basildon Park from the front lawn
August 24, 2025 at 11:49 AM
rebeccalize.bsky.social
In recent days, southern Europe has faced heatwaves ☀️ Thermal Trace maps show feels-like temps reaching 46°C – the ‘extreme heat stress’ threshold – in Spain on 14-15 August and 47°C on 11-12 August 🥵 In SW France, feels-like temps reached 45°C – that's up to 14°C above average! 🌡️

Find out more ⬇️
August 20, 2025 at 9:21 AM
rebeccalize.bsky.social
Excited to share our new app Thermal Trace!

🔗 thermaltrace.climate.copernicus.eu

Thermal stress = health impacts of exposure to extreme thermal conditions (heatwaves, cold spells)

Use Thermal Trace to monitor heat & cold stress globally (five days behind real time) & explore changes over time 🥵🥶
Global map of the peak heat stress experienced in June 2025, a screenshot from the new Thermal Trace app from C3S and ECMWF.
August 20, 2025 at 9:20 AM
rebeccalize.bsky.social
Exceptional Mediterranean water temperatures in June reduced nighttime air cooling along the coasts & increased humidity, worsening heat stress impacts - some coastal areas saw 10-15 tropical nights (when the temperature doesn’t drop below 20°C) last month, when they’d typically see none in June 🥵☀️🌙
A map of Europe with the sea coloured based on the sea surface temperature anomalies on 30 June 2025. Annotations mention that most of the Mediterranean basin experienced temperatures well above average, and temperatures exceeded 28°C, more than 5°C above average, in the Gulf of Lion and Ligurian Sea. A line chart of daily sea surface temperature anomalies in ERA5 from 1979 to 2025 in the western Mediterranean, showing the record-breaking anomalies in June 2025 and highlighting the previous highest anomaly in July 2023.
July 10, 2025 at 8:31 AM
rebeccalize.bsky.social
Two significant heatwaves in Europe in June meant that many people experienced more heat stress days than average: 'very strong heat stress' experienced across a lot of southern and western Europe, and part of Portugal saw 'extreme heat stress' 🥵
Find out more: climate.copernicus.eu/heatwaves-co...
A map of Europe coloured according to the maximum heat stress experienced during June 2025, with darker oranges meaning more extreme heat stress.
July 9, 2025 at 1:54 PM
rebeccalize.bsky.social
I’ll be at the European Climate Change Adaptation #ECCA2025 conference this week in Rimini supporting our EU project I-CISK, which has been co-creating human-centred, tailored climate services with partners and decision-makers in seven different countries in Europe & beyond 🌍🌐📈
June 16, 2025 at 2:28 PM
rebeccalize.bsky.social
Very grateful to have just enjoyed a whole week of sunshine in Wales - perfect weather for exploring the Pembrokeshire coast path ☀️🌳🌊🪼
A photo of the view from the Pembrokeshire coast path near Ceibwr bay, looking towards Newport, with blue skies and wildflowers A view from the Pembrokeshire coast path near Aberfforest, with a beach in a bay, blue skies and turquoise waters Newport sands beach with the tide quite far out, blue skies and sunshine on the headland
May 11, 2025 at 6:51 PM
rebeccalize.bsky.social
For #ESOTC2024 we took a detailed look at heat & drought in southeastern Europe last summer: 6 heatwaves, the region’s longest heatwave on record at 13 days, record numbers of heat stress days and tropical nights, few days between heatwaves 🥵🔥

Find out more: climate.copernicus.eu/esotc/2024/h...
An infographic from the European state of the climate 2024 report from C3S and WMO - the Infographic has a map of heatwave days in Europe, time series of heat stress days and tropical nights, a timeline of heatwaves in the region in summer 2024, and key messages describing the results.
April 16, 2025 at 6:58 PM
rebeccalize.bsky.social
The European State of the Climate #ESOTC2024 was published yesterday - have you had a chance to explore our brand new Graphics Gallery?

climate.copernicus.eu/esotc/2024/g...

Showcasing ~130 charts telling the story of our climate across a range of topics, plus data downloads, it's a must-see!
A mosaic containing thumbnails of 100+ climate-related charts from the European State of the Climate 2024 report from C3S and WMO.
April 16, 2025 at 3:16 PM
rebeccalize.bsky.social
The @copernicusecmwf.bsky.social & @wmo-global.bsky.social European State of the Climate 2024 report is now online!

🔗 climate.copernicus.eu/esotc/2024

It's been a pleasure to coordinate #ESOTC2024, working with ~100 scientists to analyse the data and tell the story of Europe's climate in 2024 📈💧☀️🔥
April 15, 2025 at 9:53 AM
rebeccalize.bsky.social
The area affected by at least ‘strong heat stress’ reached a new record maximum on 10 July 2024, when around 44% of the globe was affected by ‘strong’ to ‘extreme heat stress’. This is 5% more than the average annual maximum.
A chart showing the daily percentage of the global land area where the maximum feels-like temperature exceeded 32°C, experiencing strong to extreme heat stress. 2024 has a red line, 2023 an orange line and all years 1950-2022 shown in grey. The 2024 line is above average for most of the year and an annotation highlights the new record annual maximum in 2024 of around 44%. Data from C3S/ECMWF using ERA5-HEAT UTCI.
January 10, 2025 at 11:29 PM
rebeccalize.bsky.social
How many days with at least ‘strong heat stress’ did you experience in 2024? Much of the globe (61% of land areas) saw more days than average with this degree of heat stress 🥵

Read more in our @copernicusecmwf.bsky.social Global Climate Highlights : climate.copernicus.eu/global-clima...

🌍🌡️🧪📊
Two global maps, one showing the number of days across the globe with at least strong heat stress during 2024 from shades of yellow for 1 day to purple for the full year. The right map shows the anomaly in the number of days with strong heat stress compared to the 1991-2020 average. Orange shows areas with more days of heat stress than average, and purple fewer days than average. Data from C3S/ECMWF using ERA5-HEAT UTCI
January 10, 2025 at 11:29 PM
rebeccalize.bsky.social
This was an entertaining read while enjoying this morning’s coffee in the sunshine 😆☀️☕️(before I head off to do some heat stress analysis for climate monitoring of course! And maybe I’ll add essential emoji use to the next ESOTC writing guidelines… 📝📈)

blueskyroast.com
Screenshot from blueskyroast.com of my bluesky profile summarises as “Dr Rebecca: the climate crusader with a cyclone of charisma. Meet the meteorological maestro whose posts hit harder than a hurricane” Screenshot from blueskyroast.com with “my character build; if life was an RPG… - special abilities: data visualisation wizardry, hurricane hot take specialist, climate policy advocate. Weaknesses: overly detailed climate models, incessant use of emojis, general aversion to climate deniers. Quest: navigating the tempest of misinformation to champion climate clarity.”
December 6, 2024 at 10:08 AM
rebeccalize.bsky.social
Did you know the #ECMWF forecasting system was upgraded this week? 🌐

One of my favourite updates: new forecasts of thermal stress 🥵🥶 - UTCI, wet bulb globe temperature, wind chill, heat index & humidex - are now openly available in our charts catalogue! 🗺️

🔗 charts.ecmwf.int/products/med...
A global map of a thermal stress (heat and cold stress) forecast based on the Universal Thermal Climate Index (UTCI), one of 7 new thermal stress forecast parameters now available with the latest ECMWF forecast upgrade. Blue shading indicates levels of cold stress, and red heat stress.
November 14, 2024 at 9:26 PM
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The latest ECMWF newsletter is now published 📝

Alongside articles on #MachineLearning ensembles & IFS upgrades, we wrote an article on the extreme heat in southeastern Europe this summer 🥵

We talk about how this was predicted & the #HeatStress people experienced: www.ecmwf.int/sites/defaul...
Screenshot of the start of the ECMWF newsletter article titled “extremely warm summer in southeast Europe”, articles available at the link in the post. A time series chart showing three average feels-like temperature over southeastern Europe for each day of 2024 up to the end of summer, compared to past years since 1950. Horizontal lines indicate corresponding heat stress thresholds.
October 25, 2024 at 2:58 PM
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2023 was the warmest year on record 🔥 📈

So many records broken, so many extreme events, and chart after chart, data point after data point showing us without a shadow of a doubt that our climate is warming, and greenhouse gases are still rising…

climate.copernicus.eu/global-clima...
Two graphs in orange and red colours, the left a line graph showing the increase in temperature above pre-industrial level since 1850 using several datasets and 5-year averages, and the right a bar chart showing the annual values since 1967
January 9, 2024 at 8:47 PM
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2023 is on track to be the warmest year on record ⚠️

Globally, we've just had the warmest October on record... following the warmest June, July, August & September on record. The year so far is 1.43°C above pre-industrial levels 🌍🌡️📈

More 🔗: climate.copernicus.eu/copernicus-o...
November 13, 2023 at 10:59 PM