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Tim Andrews

@tim-andrews

Research Scientist | Met Office Hadley Centre Associate Professor | University of Leeds Climate and Atmospheric Science https://timothyandrews.github.io/

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15.11.2024
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Latest posts by Tim Andrews @tim-andrews

Check out the @pnas.org highlight for our new paper on how Paleoclimate Pattern Effects in the Pliocene lead to tighter constraints on the modern response to CO2 (a.k.a. climate sensitivity)

30.01.2026 18:30 πŸ‘ 23 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
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CFMIP protocol pre-print now out for discussion

egusphere.copernicus.org/preprints/20...

29.01.2026 14:56 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Paleoclimate pattern effects help constrain climate sensitivity and 21st-century warming | PNAS Paleoclimates provide examples of past climate change that inform estimates of modern warming from greenhouse-gas emissions, known as Earth’s clima...

Really excited to see this paper out!! Led by @vtcoop.bsky.social we show that if you use cold and warm paleoclimates together, you can reduce uncertainty in Earth's climate sensitivity by quantifying the pattern effect and more precisely constrain future climate change www.pnas.org/doi/10.1073/...

23.01.2026 15:36 πŸ‘ 104 πŸ” 45 πŸ’¬ 1 πŸ“Œ 2

lol. I enjoyed it too

15.01.2026 09:18 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The Carbon Brief Interview: UK Met Office chief executive Penny EndersbyΒ  - Carbon Brief Prof Penny Endersby has been chief executive of the UK Met Office since December 2018.

How are we equipping people for the current and future climate?

Our Chief Executive @pennyend.bsky.social has spoken to
@carbonbrief.org about climate science, tackling misinformation and AI.

Read and watch ‡️
www.carbonbrief.org/the-carbon-b...

27.10.2025 12:19 πŸ‘ 15 πŸ” 6 πŸ’¬ 0 πŸ“Œ 1

Looks promising πŸ‘

26.09.2025 15:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Climate predictions made 20 years ago compared to the world that actually happened.

Climate predictions made 20 years ago compared to the world that actually happened.

What's that? Climate predictions, you say? Okay!

www.realclimate.org/index.php/cl...

23.09.2025 22:35 πŸ‘ 140 πŸ” 42 πŸ’¬ 2 πŸ“Œ 0
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Dr Ben Booth appointed to Met Office Academic Partnership post The School of Computer Science is delighted to welcome Dr Ben Booth as part of the prestigious Met Office Academic Partnership (MOAP) at Leeds.

Fantastic to welcome Dr Ben Booth to @universityofleeds.bsky.social School of Computer Science: the 5th of 5 new Met Office Academic Partnership joint positions.
ML is transforming science. Ben's appointment will better link atmos & computer science & deliver impact
eps.leeds.ac.uk/news/article...

21.08.2025 16:30 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Abstract deadline is tomorrow (13th Aug) for the CMIP Community Workshop in Japan March 2026.

cmip2026.org/programme/ab...

Submissions for in person or virtual presentation welcome. Picked up out some fun sessions below πŸ‘‡

12.08.2025 14:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Some sessions that ought to be fun & interesting:

πŸ”· ID4 RFMIP: Exploring radiative Forcing in models and observations to understand climate change

πŸ”· ID5 CERESMIP: Confronting models with observed changes in the Earth’s energy imbalance

πŸ”· ID15 CFMIP: Clouds, circulation and climate sensitivity

29.05.2025 12:53 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1
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Anfield βœŠπŸ”΄ #LFC

04.08.2025 21:37 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Quick trip home to the #LakeDistrict πŸ‘ŒπŸΌ

03.08.2025 14:46 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Special Issue: Earth's Changing Water and Energy Cycle This collection features research from the ISSI Workshop: Challenges in Understanding the Global Water Energy Cycle and its Changes in Response to Greenhouse ...

The online and open access version of these papers can be found here:

link.springer.com/collections/...

31.07.2025 15:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Got a call to visit the work post room as there was a parcel for me… (first time in 10+years!)

It was a book, sent to contributing authors I presume, of papers that came out of an ISSI workshop in 2022.

It’s easy to forget that journals often still have physical copies… a joy to flick through.

31.07.2025 15:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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CMIP Community Workshop 2026 - Coupled Model Intercomparison Project The CMIP Community Workshop 2026 will bring together a growing, and increasingly diverse, community of Earth system scientists, partners, and stakeholders. It

We (@tim-andrews.bsky.social, Ryan Kramer and I) are leading a session around understanding radiative forcing in models at the CMIP Community Workshop in Kyoto, Japan, next March. Abstract submissions open until 13 August:

wcrp-cmip.org/event/cmip20...
Session ID #4

04.07.2025 06:58 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Our lad from Portugal. Forever | Diogo Jota
Our lad from Portugal. Forever | Diogo Jota YouTube video by Liverpool FC

β€œβ€¦ oh, his name is Diogo..” πŸ’”

youtu.be/XQ5TA0F-dZc?...

04.07.2025 07:28 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Fantastic to have spent two days at Leeds discussing physical climate science with new and old colleagues. Looking forward to the opportunities ahead @earthandenvleeds.bsky.social.

And it’s great to be back where it all began 20 odd years ago as a student, but now on the other side of the fence…

26.06.2025 15:57 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

I think there is some automated diagnostic effort now. Fairly sure Gregory plots are included in ESMValTool for cmip6 and for cmip7 it’s in the Rapid Evaluation Framework…

@mzelinka.bsky.social and I are being replaced by bots

19.06.2025 21:35 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
PP Binary Format PP file format A brief description of the PP format with links to software utilities and code tables. Introduction PP-format is a record-based binary format use

Yep

help.ceda.ac.uk/article/4424...

16.06.2025 15:38 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I should clarify our physical model HadGEM will be. It might not be true for our earth system submission to CMIP7 e.g UKESM.

One CMIP iteration at a time. CMIP6 we solved the Dec 1st start date annoyance. CMIP7 (partly) the 360 day calendar.

Slowly but surely…. What do you want for CMIP8?

16.06.2025 08:26 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I should add a clarification that this might not be true for earth system submission to CMIP7 e.g UKESM. But the physical model HadGEM has moved to Gregorian.

Slowly but surely….

16.06.2025 08:22 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

You’ll be pleased to hear that our next model for CMIP7 submission will use a Gregorian calendar…

16.06.2025 07:39 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 2
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Met Office Hadley Centre Climate Programme: Science Review and Advisory Group Members This advertisement is for the recruitment of up to four new members of the Met Office Hadley Centre Climate Programme Science Advisory and Review Group. It is posted on behalf of The UK Department for...

The @metoffice.gov.uk Hadley Centre is a powerhouse of climate science. If you'd like to help guide their program of work, please consider joining their Science Review and Advisory Group. There has never been a more important time to stand up for science !

πŸ§ͺ🌍🌑️

www.metoffice.gov.uk/research/app...

13.06.2025 16:40 πŸ‘ 7 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
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Observed trend in Earth energy imbalance may provide a constraint for low climate sensitivity models Climate forcings by greenhouse gases and aerosols cause an imbalance at the top of the atmosphere between the net incoming solar radiation and outgoing longwave radiation from Earth. This Earth energy...

Happy to share our paper in β€ͺ@science.org‬ 'Observed trend in Earth energy imbalance may provide a constraint for low climate sensitivity models' | Science www.science.org/doi/10.1126/...

12.06.2025 18:15 πŸ‘ 105 πŸ” 36 πŸ’¬ 7 πŸ“Œ 4

Almost as bad as his Covid estimates

12.06.2025 17:41 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Looks a good read:

The Sea Surface Temperature Pattern Effect on Outgoing Longwave Radiation: The Role of Large-Scale Convective Aggregation

agupubs.onlinelibrary.wiley.com/doi/full/10....

11.06.2025 09:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Some sessions that ought to be fun & interesting:

πŸ”· ID4 RFMIP: Exploring radiative Forcing in models and observations to understand climate change

πŸ”· ID5 CERESMIP: Confronting models with observed changes in the Earth’s energy imbalance

πŸ”· ID15 CFMIP: Clouds, circulation and climate sensitivity

29.05.2025 12:53 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1
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The CMIP Community Workshop 2026 will be held in Kyoto, Japan from 9-13th March 2026. The call for abstracts for CMIP26 is now open! Find out more at wcrp-cmip.org/cmip26-call-...

27.05.2025 15:56 πŸ‘ 10 πŸ” 6 πŸ’¬ 1 πŸ“Œ 7
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The CMIP Community Workshop 2026 will be held in Kyoto, Japan from 9-13th March 2026. The call for side sessions for CMIP26 is now open! Find out more at wcrp-cmip.org/cmip26-side-...

29.05.2025 12:30 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Global climate predictions show temperatures expected to remain at or near record levels in coming five years The latest prediction of global climate [issued today, Wednesday 28 May 2025] suggests the average global temperature is likely to continue to reach record or near-record levels in the coming five yea...

The Global Annual to Decadal Climate Update published today by Met Office and the WMO shows that global average temperature exceeded 1.5Β°C above the 1850-1900 average last year for the first time

bit.ly/43CHLGJ

28.05.2025 08:09 πŸ‘ 43 πŸ” 28 πŸ’¬ 1 πŸ“Œ 1