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.
https://www.hopwood-marine-science.com/
He/him 🌊 🐻❄️ 🐧
https://www.hopwood-marine-science.com/
He/him 🌊 🐻❄️ 🐧
Reposted by Mark Hopwood
My Christmas present this year. A painting of the RV Tangaroa in the Ross Sea Antarctica by Alfred Memelink memelink.nz. Anyone have nice paintings or artwork of research vessels in beautiful places? 🌊🚢 please share.
December 25, 2025 at 1:03 AM
My Christmas present this year. A painting of the RV Tangaroa in the Ross Sea Antarctica by Alfred Memelink memelink.nz. Anyone have nice paintings or artwork of research vessels in beautiful places? 🌊🚢 please share.
It may not be a holiday in China, but the research group went for "traditional" KTV (Karaoke) after dinner anyway 🎄🎅🎁
December 24, 2025 at 1:43 AM
It may not be a holiday in China, but the research group went for "traditional" KTV (Karaoke) after dinner anyway 🎄🎅🎁
Finished -what I hope😅- is my last #peerreview for 2025
The number I get asked to do keeps going up. In 2025 I finished 30 reviews which is about as many as I can accept. Curiously, either I got kinder or Editors are sending me better drafts (or maybe both!)- only 3 recommended rejections this year
The number I get asked to do keeps going up. In 2025 I finished 30 reviews which is about as many as I can accept. Curiously, either I got kinder or Editors are sending me better drafts (or maybe both!)- only 3 recommended rejections this year
December 23, 2025 at 2:58 AM
Finished -what I hope😅- is my last #peerreview for 2025
The number I get asked to do keeps going up. In 2025 I finished 30 reviews which is about as many as I can accept. Curiously, either I got kinder or Editors are sending me better drafts (or maybe both!)- only 3 recommended rejections this year
The number I get asked to do keeps going up. In 2025 I finished 30 reviews which is about as many as I can accept. Curiously, either I got kinder or Editors are sending me better drafts (or maybe both!)- only 3 recommended rejections this year
Getting students to fill in their end of course evaluations...🤔
A little cake moves things along much faster than weeks of badgering emails, from 29% to 96% completion in an hour 😆
#Academicchat
A little cake moves things along much faster than weeks of badgering emails, from 29% to 96% completion in an hour 😆
#Academicchat
December 23, 2025 at 1:32 AM
Getting students to fill in their end of course evaluations...🤔
A little cake moves things along much faster than weeks of badgering emails, from 29% to 96% completion in an hour 😆
#Academicchat
A little cake moves things along much faster than weeks of badgering emails, from 29% to 96% completion in an hour 😆
#Academicchat
Reposted by Mark Hopwood
#OnThisDay in 1872, the expedition of HMS Challenger set sail from Portsmouth, travelling nearly 70,00 nautical miles and cataloguing over 4000 unknown species over 4 years. This pioneering expedition, organised by the Royal Society, laid the foundations of oceanography.
December 21, 2025 at 12:43 PM
#OnThisDay in 1872, the expedition of HMS Challenger set sail from Portsmouth, travelling nearly 70,00 nautical miles and cataloguing over 4000 unknown species over 4 years. This pioneering expedition, organised by the Royal Society, laid the foundations of oceanography.
The Arctic is sparsely populated but still functions as a sink for a large amount of the Pb humans have released into the environment. Atlantic water doesn't only carry heat into the Arctic, but also Pb from European/American industry @geotraces.bsky.social 🌊
www.nature.com/articles/s41...
www.nature.com/articles/s41...
The Arctic Ocean is a net sink for anthropogenic lead deposited into the Atlantic Ocean - Nature Communications
Humans released millions of tons of toxic Pb into the air. The authors show that the Arctic Ocean is a sink for Pb emissions in North America and Eurasia that deposited into the North Atlantic Ocean l...
www.nature.com
December 19, 2025 at 1:00 AM
The Arctic is sparsely populated but still functions as a sink for a large amount of the Pb humans have released into the environment. Atlantic water doesn't only carry heat into the Arctic, but also Pb from European/American industry @geotraces.bsky.social 🌊
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Mark Hopwood
The 2025 #Arctic Report Card is out! #AGU25 🧪🌊🦑🐻❄️
Check out the executive summary by the editors M.L. Drunkenmiller, R.L. Thoman, and T.A. Moon. @alaskawx.bsky.social
arctic.noaa.gov/report-card/...
Check out the executive summary by the editors M.L. Drunkenmiller, R.L. Thoman, and T.A. Moon. @alaskawx.bsky.social
arctic.noaa.gov/report-card/...
Executive Summary - NOAA Arctic
DOI: 10.25923/nrzf-j897 M. L. Druckenmiller1, R. L. Thoman2,3, and T. A. Moon1 1National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado ...
arctic.noaa.gov
December 16, 2025 at 7:36 PM
The 2025 #Arctic Report Card is out! #AGU25 🧪🌊🦑🐻❄️
Check out the executive summary by the editors M.L. Drunkenmiller, R.L. Thoman, and T.A. Moon. @alaskawx.bsky.social
arctic.noaa.gov/report-card/...
Check out the executive summary by the editors M.L. Drunkenmiller, R.L. Thoman, and T.A. Moon. @alaskawx.bsky.social
arctic.noaa.gov/report-card/...
I'm not the most creative person 😅, but fortunately some of our students are and they made our working group a new logo and a fantastic webpage with all our projects and research areas 🐻❄️ 🐧 🐳 🌎
www.hopwood-marine-science.com
www.hopwood-marine-science.com
Hopwood Marine Science
www.hopwood-marine-science.com
December 16, 2025 at 4:26 AM
I'm not the most creative person 😅, but fortunately some of our students are and they made our working group a new logo and a fantastic webpage with all our projects and research areas 🐻❄️ 🐧 🐳 🌎
www.hopwood-marine-science.com
www.hopwood-marine-science.com
Reposted by Mark Hopwood
Greenland's fjords are pathways for exchange of heat and freshwater between the continental shelf and outlet glaciers of the Greenland Ice Sheet. Vries et al., present year-round water column velocity observations for Nuup Kangerlua in SW Greenland 🌊
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
December 14, 2025 at 6:02 AM
Greenland's fjords are pathways for exchange of heat and freshwater between the continental shelf and outlet glaciers of the Greenland Ice Sheet. Vries et al., present year-round water column velocity observations for Nuup Kangerlua in SW Greenland 🌊
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
It's well known meltwater has some peculiar effects in the ocean, but we're always happy to find a few more! Ambient conditions are very different in Greenland & Antarctica, but curiously in both cases we see short-term negative responses of plankton to meltwater 🌊
online.ucpress.edu/elementa/art...
online.ucpress.edu/elementa/art...
December 13, 2025 at 6:31 AM
It's well known meltwater has some peculiar effects in the ocean, but we're always happy to find a few more! Ambient conditions are very different in Greenland & Antarctica, but curiously in both cases we see short-term negative responses of plankton to meltwater 🌊
online.ucpress.edu/elementa/art...
online.ucpress.edu/elementa/art...
Reposted by Mark Hopwood
Fun day poking around with a bunch of weedy sea dragons. Lucky me! #WeedySeaDragon #MarineLife #UnderwaterPhotography #PortseaPier
December 11, 2025 at 7:19 AM
Fun day poking around with a bunch of weedy sea dragons. Lucky me! #WeedySeaDragon #MarineLife #UnderwaterPhotography #PortseaPier
Reposted by Mark Hopwood
December 10, 2025 at 9:23 PM
Reposted by Mark Hopwood
Some of Nicolas Horniblow’s most profound experiences happen on night dives. Once the light drops, the reef shifts. Species that hide during the day move out, and the whole community runs on a different rhythm.
greatsouthernreef.com/nicolas-horn...
greatsouthernreef.com/nicolas-horn...
December 10, 2025 at 9:53 PM
Some of Nicolas Horniblow’s most profound experiences happen on night dives. Once the light drops, the reef shifts. Species that hide during the day move out, and the whole community runs on a different rhythm.
greatsouthernreef.com/nicolas-horn...
greatsouthernreef.com/nicolas-horn...
Publication fees are a drain of scientific resources, but individual scientists can't change the system.
"Funding agencies hold all the cards". They can and should mandate change; set reasonable terms and ensure good value for public money.
www.researchprofessionalnews.com/rr-news-uk-o....
"Funding agencies hold all the cards". They can and should mandate change; set reasonable terms and ensure good value for public money.
www.researchprofessionalnews.com/rr-news-uk-o....
Funders ‘hold all the cards’ to reform publishing, say academics - Research Professional News
Paper urges structural changes to stop “drain” of research resources by for-profit publishers
www.researchprofessionalnews.com
December 10, 2025 at 4:49 AM
Publication fees are a drain of scientific resources, but individual scientists can't change the system.
"Funding agencies hold all the cards". They can and should mandate change; set reasonable terms and ensure good value for public money.
www.researchprofessionalnews.com/rr-news-uk-o....
"Funding agencies hold all the cards". They can and should mandate change; set reasonable terms and ensure good value for public money.
www.researchprofessionalnews.com/rr-news-uk-o....
Reposted by Mark Hopwood
Our data analysis guides for multiple stressor/driver research 🌊
@christinamcgraw.bsky.social
@sineadcollins.bsky.social
@mridulkthomas.bsky.social
@chrisecornwall.bsky.social
+ Peter Dillingham, Steeve Comeau, Sam Dupont
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
@christinamcgraw.bsky.social
@sineadcollins.bsky.social
@mridulkthomas.bsky.social
@chrisecornwall.bsky.social
+ Peter Dillingham, Steeve Comeau, Sam Dupont
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
The MEDDLE Data Analysis Guides as a Living Resource for Multiple‐Driver Marine Research
Click on the article title to read more.
aslopubs.onlinelibrary.wiley.com
December 8, 2025 at 1:46 PM
Our data analysis guides for multiple stressor/driver research 🌊
@christinamcgraw.bsky.social
@sineadcollins.bsky.social
@mridulkthomas.bsky.social
@chrisecornwall.bsky.social
+ Peter Dillingham, Steeve Comeau, Sam Dupont
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
@christinamcgraw.bsky.social
@sineadcollins.bsky.social
@mridulkthomas.bsky.social
@chrisecornwall.bsky.social
+ Peter Dillingham, Steeve Comeau, Sam Dupont
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
Reposted by Mark Hopwood
Changing circulation patterns in the Arctic Ocean could affect weather thousands of miles away. Researchers dig into the details in new work. eos.org/research-spo...
Tiny Turbulent Whirls Keep the Arctic Ocean Flowing - Eos
Centimeter-sized turbulence controls the rate at which the Arctic Ocean churns.
eos.org
December 8, 2025 at 2:08 PM
Changing circulation patterns in the Arctic Ocean could affect weather thousands of miles away. Researchers dig into the details in new work. eos.org/research-spo...
Reposted by Mark Hopwood
River alkalinity is critical for coastal carbon dynamics & marine ecosystems. According to a modeling study, it significantly reduces the air-to-sea CO2 flux in river-dominated coastal ocean, and therefore OA (i.e., ~70% less flux into the ocean): 🌊🧪 agupubs.onlinelibrary.wiley.com/doi/full/10....
December 8, 2025 at 12:26 PM
River alkalinity is critical for coastal carbon dynamics & marine ecosystems. According to a modeling study, it significantly reduces the air-to-sea CO2 flux in river-dominated coastal ocean, and therefore OA (i.e., ~70% less flux into the ocean): 🌊🧪 agupubs.onlinelibrary.wiley.com/doi/full/10....
Reposted by Mark Hopwood
🌊📆 🌊 Ring in the new year with our 2026 wall calendar! Each of these amazing images of ocean life and field work was captured by our scientists and photographers—and your purchase helps support their work!
📲Order yours at the WHOI Store: go.whoi.edu/2025-calendar
📸 © #WHOI
📲Order yours at the WHOI Store: go.whoi.edu/2025-calendar
📸 © #WHOI
December 6, 2025 at 8:59 PM
🌊📆 🌊 Ring in the new year with our 2026 wall calendar! Each of these amazing images of ocean life and field work was captured by our scientists and photographers—and your purchase helps support their work!
📲Order yours at the WHOI Store: go.whoi.edu/2025-calendar
📸 © #WHOI
📲Order yours at the WHOI Store: go.whoi.edu/2025-calendar
📸 © #WHOI
A rather pointed Opinion piece in Frontiers & a totally bizarre situation. Nature Geoscience published a 2024 claim of dark O2 production on the Pacific seafloor. There were several obvious problems with the work & multiple lines of argument that it wasn't correct
www.frontiersin.org/journals/mar...
www.frontiersin.org/journals/mar...
Frontiers | Extraordinary Claims Require Extraordinary Evidence: Evaluating Nodule-Associated Dark Oxygen Production
Dark oxygen production (DOP) broadly encompasses all light-independent pathways that produce oxygen (Ruff et al., 2024), including microbial and abiotic proc...
www.frontiersin.org
December 1, 2025 at 7:54 AM
A rather pointed Opinion piece in Frontiers & a totally bizarre situation. Nature Geoscience published a 2024 claim of dark O2 production on the Pacific seafloor. There were several obvious problems with the work & multiple lines of argument that it wasn't correct
www.frontiersin.org/journals/mar...
www.frontiersin.org/journals/mar...
Top marks @klaus-tschira-stiftung.de for their review format. Of all organizations I review for, their procedure is by far the smoothest 👍
Many organizations that ask for peer reviews are not so careful, so I have a 15 minute rule- If I can't access files within 15 min of trying, I decline to do it
Many organizations that ask for peer reviews are not so careful, so I have a 15 minute rule- If I can't access files within 15 min of trying, I decline to do it
December 1, 2025 at 6:00 AM
Top marks @klaus-tschira-stiftung.de for their review format. Of all organizations I review for, their procedure is by far the smoothest 👍
Many organizations that ask for peer reviews are not so careful, so I have a 15 minute rule- If I can't access files within 15 min of trying, I decline to do it
Many organizations that ask for peer reviews are not so careful, so I have a 15 minute rule- If I can't access files within 15 min of trying, I decline to do it
Reposted by Mark Hopwood
Love papers like this:
"An ACTIONABLE guide to the United Nations' Biodiversity Beyond National Jurisdiction Agreement for research scientists"
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
🌊 🦑 🧪 #openaccess #deepseamining
"An ACTIONABLE guide to the United Nations' Biodiversity Beyond National Jurisdiction Agreement for research scientists"
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
🌊 🦑 🧪 #openaccess #deepseamining
An actionable guide to the United Nations' Biodiversity Beyond National Jurisdiction Agreement for research scientists
The United Nations' “Biodiversity Beyond National Jurisdiction” (BBNJ) Agreement establishes a broad framework regulating activities—including scientific research—in marine Areas Beyond National Juri....
aslopubs.onlinelibrary.wiley.com
November 29, 2025 at 5:37 PM
Love papers like this:
"An ACTIONABLE guide to the United Nations' Biodiversity Beyond National Jurisdiction Agreement for research scientists"
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
🌊 🦑 🧪 #openaccess #deepseamining
"An ACTIONABLE guide to the United Nations' Biodiversity Beyond National Jurisdiction Agreement for research scientists"
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
🌊 🦑 🧪 #openaccess #deepseamining
Reposted by Mark Hopwood
Missed the GEOTRACES Intermediate Data Product 2025 launch webinar? 🌊
The full event and individual talks are now available to watch:
👉 www.geotraces.org/launch-of-ge...
#IDP2025 #GEOTRACESDataProduct #TraceElements #marinescience #OceanScience
@scor-int.bsky.social @unoceandecade.bsky.social
The full event and individual talks are now available to watch:
👉 www.geotraces.org/launch-of-ge...
#IDP2025 #GEOTRACESDataProduct #TraceElements #marinescience #OceanScience
@scor-int.bsky.social @unoceandecade.bsky.social
November 26, 2025 at 3:46 PM
Missed the GEOTRACES Intermediate Data Product 2025 launch webinar? 🌊
The full event and individual talks are now available to watch:
👉 www.geotraces.org/launch-of-ge...
#IDP2025 #GEOTRACESDataProduct #TraceElements #marinescience #OceanScience
@scor-int.bsky.social @unoceandecade.bsky.social
The full event and individual talks are now available to watch:
👉 www.geotraces.org/launch-of-ge...
#IDP2025 #GEOTRACESDataProduct #TraceElements #marinescience #OceanScience
@scor-int.bsky.social @unoceandecade.bsky.social
Reposted by Mark Hopwood
Do you have Dissolved organic carbon (DOC) and ColouredDOM/FluorescenceDOM data from coastal waters?
Join this BioGeoSea initiative and help create a global, open-access dataset that will transform how we monitor coastal DOC and understand biogeochemical processes.
Join this BioGeoSea initiative and help create a global, open-access dataset that will transform how we monitor coastal DOC and understand biogeochemical processes.
November 26, 2025 at 7:38 AM
Do you have Dissolved organic carbon (DOC) and ColouredDOM/FluorescenceDOM data from coastal waters?
Join this BioGeoSea initiative and help create a global, open-access dataset that will transform how we monitor coastal DOC and understand biogeochemical processes.
Join this BioGeoSea initiative and help create a global, open-access dataset that will transform how we monitor coastal DOC and understand biogeochemical processes.
Reposted by Mark Hopwood
The "nutritional value" of glacial runoff is changing. Researchers found meltwater from retreating glaciers delivers sediment with lower concentrations of usable iron and manganese to coastal ecosystems. ❄️🧪 eos.org/articles/gla...
Glacier Runoff Becomes Less Nutritious as Glaciers Retreat - Eos
Sediment from retreating, land-terminating glaciers contains proportionally fewer micronutrients such as iron and manganese, reducing the glaciers’ value to microorganisms at the base of the food web.
eos.org
November 25, 2025 at 3:06 PM
The "nutritional value" of glacial runoff is changing. Researchers found meltwater from retreating glaciers delivers sediment with lower concentrations of usable iron and manganese to coastal ecosystems. ❄️🧪 eos.org/articles/gla...
Reposted by Mark Hopwood
What's interesting as the Thanksgiving Holiday arrives? The first @bgc-argo.bsky.social profiling floats begin to emerge from under Antarctic sea ice each year. Float 5905383 is the first @soccomproject.bsky.social float for 2025/26. It has spent 7.9 years operating under ice.
#argofloats #oneargo
#argofloats #oneargo
November 25, 2025 at 6:07 AM
What's interesting as the Thanksgiving Holiday arrives? The first @bgc-argo.bsky.social profiling floats begin to emerge from under Antarctic sea ice each year. Float 5905383 is the first @soccomproject.bsky.social float for 2025/26. It has spent 7.9 years operating under ice.
#argofloats #oneargo
#argofloats #oneargo