Chris Hughes
@cwhocean.bsky.social
Physical Oceanographer at the University of Liverpool, likes dynamics, geodesy, cycling, cool, weird science.
Reposted by Chris Hughes
"Four in ten people were unaware that tides come in twice daily, that they vary in timing each day, and that they differ in height across the country. Over a quarter of struggled with basic tide-table reading, and only a quarter could extract more complex information--such as when to safely return."
Misunderstanding the tide is putting millions at risk on UK coasts – here’s what you need to know
Four in ten people surveyed were unaware that tides come in twice daily, that they vary in timing each day, and that they differ in height across the country.
theconversation.com
October 20, 2025 at 6:00 AM
"Four in ten people were unaware that tides come in twice daily, that they vary in timing each day, and that they differ in height across the country. Over a quarter of struggled with basic tide-table reading, and only a quarter could extract more complex information--such as when to safely return."
Worth sharing for insight into how astro publishing works (some useful ideas for others?!), but especially for the numbering of posts in the thread.
A thread mostly for astronomers, who have just submitted several thousand proposals to use the marvellous #JWST - the vast majority of which are marvellous and which are about to be rejected as the telescope is hugely oversubscribed. 🔭
October 16, 2025 at 5:01 PM
Worth sharing for insight into how astro publishing works (some useful ideas for others?!), but especially for the numbering of posts in the thread.
Just got a book about Greenwich time, and got intrigued by the strange GMT+9.5 hours zone in the middle of Australia, so I had to find out more. Turns out they have 11 time zones, one used by ~200 people. Nah mate, it's too dark to play cricket at half past. en.m.wikipedia.org/wiki/Time_in...
Time in Australia - Wikipedia
en.m.wikipedia.org
July 23, 2025 at 10:38 PM
Just got a book about Greenwich time, and got intrigued by the strange GMT+9.5 hours zone in the middle of Australia, so I had to find out more. Turns out they have 11 time zones, one used by ~200 people. Nah mate, it's too dark to play cricket at half past. en.m.wikipedia.org/wiki/Time_in...
Reposted by Chris Hughes
A fantastic opportunity for an open-ended senior post in sea level science in Liverpool. These do not come up very often! Closing date 19th June. @noc.ac.uk 🌊
careers.noc.ac.uk/vacancy/seni...
careers.noc.ac.uk/vacancy/seni...
Careers | National Oceanography Centre
careers.noc.ac.uk
May 30, 2025 at 3:58 PM
A fantastic opportunity for an open-ended senior post in sea level science in Liverpool. These do not come up very often! Closing date 19th June. @noc.ac.uk 🌊
careers.noc.ac.uk/vacancy/seni...
careers.noc.ac.uk/vacancy/seni...
Not what I guessed would be the biggest hazard in Texas - there's something to be said for tin hats. Big ones, with cushions on top!
Yesterday, #ICECHIP teams collected numerous hailstones > 100 mm in diameter, with the largest one being at least 139 mm (5.47 inches) just east of Afton, Texas. These stones will be sent to the cold lab at NCAR.
May 27, 2025 at 6:09 PM
Not what I guessed would be the biggest hazard in Texas - there's something to be said for tin hats. Big ones, with cushions on top!
Reposted by Chris Hughes
US folks - please help protect trans healthcare access. Text SIGN PCCOMC to 50409 and letters will be sent to your representatives.
🏳️⚧️ ❤️ 🙏
🏳️⚧️ ❤️ 🙏
May 26, 2025 at 8:55 PM
US folks - please help protect trans healthcare access. Text SIGN PCCOMC to 50409 and letters will be sent to your representatives.
🏳️⚧️ ❤️ 🙏
🏳️⚧️ ❤️ 🙏
Wow, what an image! Space is big...
Totalling around 120 hours of observing time, this is the longest the NASA/ESA/CSA James Webb Space Telescope has ever focused on a single target.
The deep field aims to probe the Cosmic Dawn, when the Universe was only a few million years old.
Read more 👉 www.esa.int/ESA_Multimed...
🔭 🧪 ☄️
The deep field aims to probe the Cosmic Dawn, when the Universe was only a few million years old.
Read more 👉 www.esa.int/ESA_Multimed...
🔭 🧪 ☄️
May 27, 2025 at 6:03 PM
Wow, what an image! Space is big...
Reposted by Chris Hughes
A victory for the federal scientific workforce! We could not stand by while this irreparable harm continues at NSF, NOAA and all our scientific agencies.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
May 10, 2025 at 2:03 AM
A victory for the federal scientific workforce! We could not stand by while this irreparable harm continues at NSF, NOAA and all our scientific agencies.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
Reposted by Chris Hughes
There’s so much happening right now, I thought I’d put together a running thread on the dismantling of #climate and research and knowledge infrastructure in the United States 🧵
May 7, 2025 at 12:11 PM
There’s so much happening right now, I thought I’d put together a running thread on the dismantling of #climate and research and knowledge infrastructure in the United States 🧵
Reposted by Chris Hughes
So, speaking of Universities caving to government demands and people bringing up loyalty oaths, here's a story that involves a well known oceanographer.
In 1935 Massachusetts enacted a law that required teachers in public and private schools to take a loyalty oath to teach in the state 1/n
🌊
In 1935 Massachusetts enacted a law that required teachers in public and private schools to take a loyalty oath to teach in the state 1/n
🌊
March 22, 2025 at 8:45 PM
So, speaking of Universities caving to government demands and people bringing up loyalty oaths, here's a story that involves a well known oceanographer.
In 1935 Massachusetts enacted a law that required teachers in public and private schools to take a loyalty oath to teach in the state 1/n
🌊
In 1935 Massachusetts enacted a law that required teachers in public and private schools to take a loyalty oath to teach in the state 1/n
🌊
Reposted by Chris Hughes
Some light relief.
Here's an animation of an old mechanical tide machine, summing sine waves to simulate a prediction of the tide:
tide-and-time.uk/tide-predict...
Here's an animation of an old mechanical tide machine, summing sine waves to simulate a prediction of the tide:
tide-and-time.uk/tide-predict...
Tide Predicting Machines – simulation of Kelvin Machine | Tide and Time
tide-and-time.uk
February 5, 2025 at 9:16 AM
Some light relief.
Here's an animation of an old mechanical tide machine, summing sine waves to simulate a prediction of the tide:
tide-and-time.uk/tide-predict...
Here's an animation of an old mechanical tide machine, summing sine waves to simulate a prediction of the tide:
tide-and-time.uk/tide-predict...
Very atmospheric sun on a still West Kirby marina this afternoon
January 31, 2025 at 6:53 PM
Very atmospheric sun on a still West Kirby marina this afternoon
Reposted by Chris Hughes
First day back to Liverpool after Christmas - Merseyrail have given up due to wet (whenever it rains), so I get to take the prettier route via Runcorn. This is from near Frodsham.
January 7, 2025 at 9:25 AM
First day back to Liverpool after Christmas - Merseyrail have given up due to wet (whenever it rains), so I get to take the prettier route via Runcorn. This is from near Frodsham.