Mark Hopwood
@markinchina.bsky.social
Scientist living in Shenzhen, China. Associate Professor in Marine Biogeochemistry at SUSTech, Associate Editor at JGR:Oceans. Father to a baby dragon.
外冷内热, he/him 🌊 🐻❄️ 🐧
外冷内热, he/him 🌊 🐻❄️ 🐧
It always tickles me silly when I read some reviewer's blunt comments about a piece of submitted work being useless/worthless/meritless/unpublishable, without much of a constructive comment about why or how to improve, and the authors reply... "Thank you for this insightful/thoughtful comment" 😅
November 17, 2025 at 5:01 AM
It always tickles me silly when I read some reviewer's blunt comments about a piece of submitted work being useless/worthless/meritless/unpublishable, without much of a constructive comment about why or how to improve, and the authors reply... "Thank you for this insightful/thoughtful comment" 😅
The domination of scientific publishing by major commercial publishers is damaging science... Amen to that.
Journals should be led by public scientists
Journals should be publicly owned
& "Number of papers published" should mean nothing to anyone
#AcadmicChatter
Journals should be led by public scientists
Journals should be publicly owned
& "Number of papers published" should mean nothing to anyone
#AcadmicChatter
November 17, 2025 at 12:55 AM
The domination of scientific publishing by major commercial publishers is damaging science... Amen to that.
Journals should be led by public scientists
Journals should be publicly owned
& "Number of papers published" should mean nothing to anyone
#AcadmicChatter
Journals should be led by public scientists
Journals should be publicly owned
& "Number of papers published" should mean nothing to anyone
#AcadmicChatter
I've lived on the top floor before, but previously this was in the context of a bedroom in the attic 😅
The view over Shenzhen Bay and Hong Kong is slightly better this time 😆
The view over Shenzhen Bay and Hong Kong is slightly better this time 😆
November 17, 2025 at 12:27 AM
I've lived on the top floor before, but previously this was in the context of a bedroom in the attic 😅
The view over Shenzhen Bay and Hong Kong is slightly better this time 😆
The view over Shenzhen Bay and Hong Kong is slightly better this time 😆
Reposted by Mark Hopwood
In the latest Global Carbon Budget, the estimate of the ocean carbon sink was increased by 0.8 Gt of CO₂ due to methodological changes.
Each mCDR deployment aims to remove a tiny fraction of that, so if people think we have the methodology to do proper MRV for mCDR right now, they're delusional. 🌊
Each mCDR deployment aims to remove a tiny fraction of that, so if people think we have the methodology to do proper MRV for mCDR right now, they're delusional. 🌊
November 13, 2025 at 12:03 PM
In the latest Global Carbon Budget, the estimate of the ocean carbon sink was increased by 0.8 Gt of CO₂ due to methodological changes.
Each mCDR deployment aims to remove a tiny fraction of that, so if people think we have the methodology to do proper MRV for mCDR right now, they're delusional. 🌊
Each mCDR deployment aims to remove a tiny fraction of that, so if people think we have the methodology to do proper MRV for mCDR right now, they're delusional. 🌊
Reposted by Mark Hopwood
Another excellent dive in the kelp forest today! 🤿 🌊 @stanfordhopkins.bsky.social
November 13, 2025 at 2:18 AM
Another excellent dive in the kelp forest today! 🤿 🌊 @stanfordhopkins.bsky.social
Reposted by Mark Hopwood
🇨🇳 📰 NEW | Analysis: #China’s #CO2 #emissions have now been flat or falling for 18 months
www.carbonbrief.org/analysis-chinas-co2-emissions-have-now-been-flat-or-falling-for-18-months/
@laurimyllyvirta.bsky.social w/ @carbonbrief.org
www.carbonbrief.org/analysis-chinas-co2-emissions-have-now-been-flat-or-falling-for-18-months/
@laurimyllyvirta.bsky.social w/ @carbonbrief.org
November 11, 2025 at 2:27 AM
🇨🇳 📰 NEW | Analysis: #China’s #CO2 #emissions have now been flat or falling for 18 months
www.carbonbrief.org/analysis-chinas-co2-emissions-have-now-been-flat-or-falling-for-18-months/
@laurimyllyvirta.bsky.social w/ @carbonbrief.org
www.carbonbrief.org/analysis-chinas-co2-emissions-have-now-been-flat-or-falling-for-18-months/
@laurimyllyvirta.bsky.social w/ @carbonbrief.org
Reposted by Mark Hopwood
Ask not what your journal can do for you—ask what you can do for your journal 🌊
JGR:Oceans is now looking for new Editors and Associate Editors, if you're interested get in touch. We don't bite! 😀
JGR:Oceans is now looking for new Editors and Associate Editors, if you're interested get in touch. We don't bite! 😀
November 11, 2025 at 1:38 AM
Ask not what your journal can do for you—ask what you can do for your journal 🌊
JGR:Oceans is now looking for new Editors and Associate Editors, if you're interested get in touch. We don't bite! 😀
JGR:Oceans is now looking for new Editors and Associate Editors, if you're interested get in touch. We don't bite! 😀
Reposted by Mark Hopwood
Oh, I love this. A new species of sea anemone was discovered recently that parks itself on top of a hermit crab shell like a hat. It seems to feed partly off the crab's faeces, but it also excretes a hard shell that extends the crab's home. In return, it's carried around the seafloor like a king.
November 10, 2025 at 9:57 PM
Oh, I love this. A new species of sea anemone was discovered recently that parks itself on top of a hermit crab shell like a hat. It seems to feed partly off the crab's faeces, but it also excretes a hard shell that extends the crab's home. In return, it's carried around the seafloor like a king.
Free t-shirts must rank close to free food in the hierarchy of student motivation 😆
Our lab releases its first clothing line featuring work from our oceanography field program in Daya Bay 🌊
Our lab releases its first clothing line featuring work from our oceanography field program in Daya Bay 🌊
November 10, 2025 at 1:39 AM
Free t-shirts must rank close to free food in the hierarchy of student motivation 😆
Our lab releases its first clothing line featuring work from our oceanography field program in Daya Bay 🌊
Our lab releases its first clothing line featuring work from our oceanography field program in Daya Bay 🌊
A key theme in the State of The Cryosphere reports is the same every year. The only effective option to reduce the impacts, damage and cost of climate change is to cut greenhouse gas emissions as quickly as possible. The faster emissions fall, the lesser the damage.
iccinet.org/statecryo25/
iccinet.org/statecryo25/
State of the Cryosphere Report 2025 – ICCI – International Cryosphere Climate Initiative
iccinet.org
November 10, 2025 at 1:35 AM
A key theme in the State of The Cryosphere reports is the same every year. The only effective option to reduce the impacts, damage and cost of climate change is to cut greenhouse gas emissions as quickly as possible. The faster emissions fall, the lesser the damage.
iccinet.org/statecryo25/
iccinet.org/statecryo25/
Reposted by Mark Hopwood
🌊 How do we collect sea ice to measure tor trace elements and isotopes? You need a big drill to collect the core and then a lot of patience to shave down the outsides with a ceramic blade…to get clean ice to melt and analyze. Dr. Tia Anderlini on the trigger here.
November 10, 2025 at 1:13 AM
🌊 How do we collect sea ice to measure tor trace elements and isotopes? You need a big drill to collect the core and then a lot of patience to shave down the outsides with a ceramic blade…to get clean ice to melt and analyze. Dr. Tia Anderlini on the trigger here.
Reposted by Mark Hopwood
Interested in penguins 🐧 🌊?
The webcam is now live for an Adélie penguin colony near Palmer Station, Antarctica
www.usap.gov/videoclipsan...
The webcam is now live for an Adélie penguin colony near Palmer Station, Antarctica
www.usap.gov/videoclipsan...
November 4, 2025 at 12:08 PM
Interested in penguins 🐧 🌊?
The webcam is now live for an Adélie penguin colony near Palmer Station, Antarctica
www.usap.gov/videoclipsan...
The webcam is now live for an Adélie penguin colony near Palmer Station, Antarctica
www.usap.gov/videoclipsan...
Reposted by Mark Hopwood
There are many methods, but this one is mine. How does it compare?🌊
Fresh ink on aerosol solubility.
This work presents the first large-scale international laboratory intercomparison study for aerosol trace element leaching protocols.
amt.copernicus.org/articles/18/...
Fresh ink on aerosol solubility.
This work presents the first large-scale international laboratory intercomparison study for aerosol trace element leaching protocols.
amt.copernicus.org/articles/18/...
Measurement of soluble aerosol trace elements: inter-laboratory comparison of eight leaching protocols
Abstract. A range of leaching protocols have been used to measure the soluble fraction of aerosol trace elements worldwide, and therefore these measurements may not be directly comparable. This work p...
amt.copernicus.org
November 4, 2025 at 5:24 PM
There are many methods, but this one is mine. How does it compare?🌊
Fresh ink on aerosol solubility.
This work presents the first large-scale international laboratory intercomparison study for aerosol trace element leaching protocols.
amt.copernicus.org/articles/18/...
Fresh ink on aerosol solubility.
This work presents the first large-scale international laboratory intercomparison study for aerosol trace element leaching protocols.
amt.copernicus.org/articles/18/...
I've unfortunately known colleagues who've died from preventable accidents, and colleagues who've sadly taken their own lives. Both issues need talking about regularly and openly.
www.scmp.com/news/china/s...
www.scmp.com/news/china/s...
Database of younger scientists’ deaths triggers heated debate in China
The list fuels concerns about the pressures researchers face, but critics warn it may not provide an accurate picture.
www.scmp.com
November 4, 2025 at 5:19 AM
I've unfortunately known colleagues who've died from preventable accidents, and colleagues who've sadly taken their own lives. Both issues need talking about regularly and openly.
www.scmp.com/news/china/s...
www.scmp.com/news/china/s...
Despite having a baby this year, perhaps surprisingly, my household's CO2 footprint is the lowest it's ever been 😅
I calculate this yearly for my undergraduate course. I haven't flown in 14 months and my wife has more than halved her business trips, so our footprint has dropped 🌎 #Flyingless
I calculate this yearly for my undergraduate course. I haven't flown in 14 months and my wife has more than halved her business trips, so our footprint has dropped 🌎 #Flyingless
November 4, 2025 at 4:54 AM
Despite having a baby this year, perhaps surprisingly, my household's CO2 footprint is the lowest it's ever been 😅
I calculate this yearly for my undergraduate course. I haven't flown in 14 months and my wife has more than halved her business trips, so our footprint has dropped 🌎 #Flyingless
I calculate this yearly for my undergraduate course. I haven't flown in 14 months and my wife has more than halved her business trips, so our footprint has dropped 🌎 #Flyingless
It's important for western scientists to approach collaborations as partners, not advisors.
A common critique I hear from Indian & Chinese colleagues is they are shown agendas about how they should do things nationally which they weren't consulted on #AcademicChatter
www.nature.com/articles/s41...
A common critique I hear from Indian & Chinese colleagues is they are shown agendas about how they should do things nationally which they weren't consulted on #AcademicChatter
www.nature.com/articles/s41...
A call for integrated and cooperative global sharing of China’s Earth observation data - Nature Geoscience
Greater accessibility to China’s vast archive of satellite Earth observations could enhance scientific progress, disaster preparedness, and international cooperation.
www.nature.com
November 4, 2025 at 1:15 AM
It's important for western scientists to approach collaborations as partners, not advisors.
A common critique I hear from Indian & Chinese colleagues is they are shown agendas about how they should do things nationally which they weren't consulted on #AcademicChatter
www.nature.com/articles/s41...
A common critique I hear from Indian & Chinese colleagues is they are shown agendas about how they should do things nationally which they weren't consulted on #AcademicChatter
www.nature.com/articles/s41...
Nice weekend trip to Daya Bay field station with SUSTech undergraduates learning about coastal biogeochemistry, ecology and a mandatory photo opportunity with Nemo et al., 😅 🌊
November 3, 2025 at 2:08 AM
Nice weekend trip to Daya Bay field station with SUSTech undergraduates learning about coastal biogeochemistry, ecology and a mandatory photo opportunity with Nemo et al., 😅 🌊
Reposted by Mark Hopwood
Did you know that submarine cables on the deep ocean floor literally connect our world?
This map reveals the fragile & mostly unseen infrastructure carrying 99% of Earth's data traffic & providing internet access everywhere.
www.maps.com/submarine-ca...
🧪 🌊 ⚒️ 🌍 🌎 🌏 #gischat @seabed2030.bsky.social
This map reveals the fragile & mostly unseen infrastructure carrying 99% of Earth's data traffic & providing internet access everywhere.
www.maps.com/submarine-ca...
🧪 🌊 ⚒️ 🌍 🌎 🌏 #gischat @seabed2030.bsky.social
The Underwater Cables That Connect the World
Explore the fragile and mostly unseen infrastructure that carries 99% of international data traffic and provides internet access around the world.
www.maps.com
November 1, 2025 at 8:58 PM
Did you know that submarine cables on the deep ocean floor literally connect our world?
This map reveals the fragile & mostly unseen infrastructure carrying 99% of Earth's data traffic & providing internet access everywhere.
www.maps.com/submarine-ca...
🧪 🌊 ⚒️ 🌍 🌎 🌏 #gischat @seabed2030.bsky.social
This map reveals the fragile & mostly unseen infrastructure carrying 99% of Earth's data traffic & providing internet access everywhere.
www.maps.com/submarine-ca...
🧪 🌊 ⚒️ 🌍 🌎 🌏 #gischat @seabed2030.bsky.social
#AI has changed university education. AI written essays on any topic take minutes and can be quite good.
So, I revised all my written assignment formats:
Ask all AI engines you use to write an essay on topic X. Critically evaluate which essay is most scientifically accurate.
#AcademicChatter
So, I revised all my written assignment formats:
Ask all AI engines you use to write an essay on topic X. Critically evaluate which essay is most scientifically accurate.
#AcademicChatter
November 1, 2025 at 9:56 AM
#AI has changed university education. AI written essays on any topic take minutes and can be quite good.
So, I revised all my written assignment formats:
Ask all AI engines you use to write an essay on topic X. Critically evaluate which essay is most scientifically accurate.
#AcademicChatter
So, I revised all my written assignment formats:
Ask all AI engines you use to write an essay on topic X. Critically evaluate which essay is most scientifically accurate.
#AcademicChatter
Reposted by Mark Hopwood
Paul Nurse describing the main job of a PI
(From ‘The Thinking Game’, 2024)
(From ‘The Thinking Game’, 2024)
October 31, 2025 at 8:45 AM
Paul Nurse describing the main job of a PI
(From ‘The Thinking Game’, 2024)
(From ‘The Thinking Game’, 2024)
Reposted by Mark Hopwood
We’re excited to join #COP30 via the Virtual Ocean Pavilion, a free interactive online portal.
It’s important to highlight ocean science on the world stage; the Pavilion's inclusive platform is globally accessible.
🌊 Opens 3 Nov
💬Register for free here: cop30oceanpavilion.vfairs.com
It’s important to highlight ocean science on the world stage; the Pavilion's inclusive platform is globally accessible.
🌊 Opens 3 Nov
💬Register for free here: cop30oceanpavilion.vfairs.com
October 31, 2025 at 1:46 PM
We’re excited to join #COP30 via the Virtual Ocean Pavilion, a free interactive online portal.
It’s important to highlight ocean science on the world stage; the Pavilion's inclusive platform is globally accessible.
🌊 Opens 3 Nov
💬Register for free here: cop30oceanpavilion.vfairs.com
It’s important to highlight ocean science on the world stage; the Pavilion's inclusive platform is globally accessible.
🌊 Opens 3 Nov
💬Register for free here: cop30oceanpavilion.vfairs.com
Today, I chatted with a disheartened postdoc about a proposal rejection. One crucial message is that luck plays a role in review comments. You can submit the same proposal 3 times and get feedback that ranges from harsh to glowing.
Nevertheless, I've noticed a few common criticisms to try and avoid:
Nevertheless, I've noticed a few common criticisms to try and avoid:
October 29, 2025 at 5:20 AM
Today, I chatted with a disheartened postdoc about a proposal rejection. One crucial message is that luck plays a role in review comments. You can submit the same proposal 3 times and get feedback that ranges from harsh to glowing.
Nevertheless, I've noticed a few common criticisms to try and avoid:
Nevertheless, I've noticed a few common criticisms to try and avoid:
Reposted by Mark Hopwood
🌊 The Arctic is melting fast. A cargo ship just sailed from China to the UK via the Arctic for the first time, taking half the usual time.
Of course, what looks like a shortcut is really a warning: climate change is redrawing our planet’s map.
observer.co.uk/news/nationa...
Of course, what looks like a shortcut is really a warning: climate change is redrawing our planet’s map.
observer.co.uk/news/nationa...
Climate change clears northern route for first container ...
The melting ice sheet has opened up a north-east passage – which brings fresh political and environmental dangers along with it
observer.co.uk
October 26, 2025 at 8:18 AM
🌊 The Arctic is melting fast. A cargo ship just sailed from China to the UK via the Arctic for the first time, taking half the usual time.
Of course, what looks like a shortcut is really a warning: climate change is redrawing our planet’s map.
observer.co.uk/news/nationa...
Of course, what looks like a shortcut is really a warning: climate change is redrawing our planet’s map.
observer.co.uk/news/nationa...
Reposted by Mark Hopwood
Subglacial freshwater from beneath the Antarctic Ice Sheet flows into the ocean under ice shelves. Vaňková et al., probe how this affects ice melt, finding that discharge impacts melt rates primarily via continental shelf temperature modification 🐧 🌊
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
October 23, 2025 at 1:03 AM
Subglacial freshwater from beneath the Antarctic Ice Sheet flows into the ocean under ice shelves. Vaňková et al., probe how this affects ice melt, finding that discharge impacts melt rates primarily via continental shelf temperature modification 🐧 🌊
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Mark Hopwood
100 years of September sea surface temperature departures through this year. Check out how quickly some of the midlatitudes are warming! 🌊
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...
October 22, 2025 at 12:30 AM
100 years of September sea surface temperature departures through this year. Check out how quickly some of the midlatitudes are warming! 🌊
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...