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Tim Andrews

@tim-andrews.bsky.social

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

275 Followers  |  135 Following  |  56 Posts  |  Joined: 15.11.2024  |  1.9147

Latest posts by tim-andrews.bsky.social on Bluesky

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The Carbon Brief Interview: UK Met Office chief executive Penny Endersbyย  - 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 โคต๏ธ
www.carbonbrief.org/the-carbon-b...

27.10.2025 12:19 โ€” ๐Ÿ‘ 15    ๐Ÿ” 6    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1

Looks promising ๐Ÿ‘

26.09.2025 15:32 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“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 โ€” ๐Ÿ‘ 140    ๐Ÿ” 42    ๐Ÿ’ฌ 2    ๐Ÿ“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 โ€” ๐Ÿ‘ 2    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“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 ๐Ÿ‘‡

12.08.2025 14:08 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Some sessions that ought to be fun & interesting:

๐Ÿ”ท ID4 RFMIP: Exploring radiative Forcing in models and observations to understand climate change

๐Ÿ”ท ID5 CERESMIP: Confronting models with observed changes in the Earthโ€™s energy imbalance

๐Ÿ”ท ID15 CFMIP: Clouds, circulation and climate sensitivity

29.05.2025 12:53 โ€” ๐Ÿ‘ 3    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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Anfield โœŠ๐Ÿ”ด #LFC

04.08.2025 21:37 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Quick trip home to the #LakeDistrict ๐Ÿ‘Œ๐Ÿผ

03.08.2025 14:46 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“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 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Got a call to visit the work post room as there was a parcel for meโ€ฆ (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.

Itโ€™s easy to forget that journals often still have physical copiesโ€ฆ a joy to flick through.

31.07.2025 15:32 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“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 โ€” ๐Ÿ‘ 5    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Our lad from Portugal. Forever | Diogo Jota
YouTube video by Liverpool FC Our lad from Portugal. Forever | Diogo Jota

โ€œโ€ฆ oh, his name is Diogo..โ€ ๐Ÿ’”

youtu.be/XQ5TA0F-dZc?...

04.07.2025 07:28 โ€” ๐Ÿ‘ 2    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“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 itโ€™s great to be back where it all began 20 odd years ago as a student, but now on the other side of the fenceโ€ฆ

26.06.2025 15:57 โ€” ๐Ÿ‘ 6    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I think there is some automated diagnostic effort now. Fairly sure Gregory plots are included in ESMValTool for cmip6 and for cmip7 itโ€™s in the Rapid Evaluation Frameworkโ€ฆ

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

19.06.2025 21:35 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“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 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“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 surelyโ€ฆ. What do you want for CMIP8?

16.06.2025 08:26 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“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 surelyโ€ฆ.

16.06.2025 08:22 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Youโ€™ll be pleased to hear that our next model for CMIP7 submission will use a Gregorian calendarโ€ฆ

16.06.2025 07:39 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“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 !

๐Ÿงช๐ŸŒ๐ŸŒก๏ธ

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

13.06.2025 16:40 โ€” ๐Ÿ‘ 7    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“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 โ€ช@science.orgโ€ฌ '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 โ€” ๐Ÿ‘ 105    ๐Ÿ” 36    ๐Ÿ’ฌ 7    ๐Ÿ“Œ 4

Almost as bad as his Covid estimates

12.06.2025 17:41 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“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 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Some sessions that ought to be fun & interesting:

๐Ÿ”ท ID4 RFMIP: Exploring radiative Forcing in models and observations to understand climate change

๐Ÿ”ท ID5 CERESMIP: Confronting models with observed changes in the Earthโ€™s energy imbalance

๐Ÿ”ท ID15 CFMIP: Clouds, circulation and climate sensitivity

29.05.2025 12:53 โ€” ๐Ÿ‘ 3    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“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 โ€” ๐Ÿ‘ 10    ๐Ÿ” 6    ๐Ÿ’ฌ 1    ๐Ÿ“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 โ€” ๐Ÿ‘ 2    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“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 1.5ยฐC above the 1850-1900 average last year for the first time

bit.ly/43CHLGJ

28.05.2025 08:09 โ€” ๐Ÿ‘ 43    ๐Ÿ” 28    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

I've got a Wren in my garden today too

27.05.2025 12:07 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Time series showing growing Earth energy imbalance (greater heating) this century

Time series showing growing Earth energy imbalance (greater heating) this century

Earth's energy imbalance needs to decline to stabilise global temperatures but it is growing

Earth's energy imbalance needs to decline to stabilise global temperatures but it is growing

The doubling of the rate of global heating in recent decades has surprised the scientific community so needs to be better understood yet our capability to measure Earth's energy imbalance is at risk: doi.org/10.1029/2024...

12.05.2025 09:48 โ€” ๐Ÿ‘ 74    ๐Ÿ” 40    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 2

Or "two-model model with/without ฮต" if we're at that level. I agree "ฮตBM" would be nice!

Speaking of which, that is probably the most confusing name we have, i.e. "ocean heat uptake efficiency" versus "efficacy of ocean heat uptake". Many have sailed into those rocks...

02.05.2025 13:32 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

I think we just say "the two-layer model". That is usually sufficiently from context. But sometimes we insert "two-layer ^energy balance^ model" if required.

02.05.2025 13:29 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

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