David Kroodsma
@davidkroodsma.bsky.social
Chief Scientist, Global Fishing Watch. I lead a team that uses satellites and AI to reveal all major human activity at sea. globalfishingwatch.org
🌊 I’m really enjoying the One Ocean Science Congress in Nice, France this week, in the lead-up to the UN Ocean Conference next week.
If you’re in Nice and interested in using Global Fishing Watch data or tools, feel free to reach out!
If you’re in Nice and interested in using Global Fishing Watch data or tools, feel free to reach out!
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
June 5, 2025 at 8:47 AM
🌊 I’m really enjoying the One Ocean Science Congress in Nice, France this week, in the lead-up to the UN Ocean Conference next week.
If you’re in Nice and interested in using Global Fishing Watch data or tools, feel free to reach out!
If you’re in Nice and interested in using Global Fishing Watch data or tools, feel free to reach out!
Just under one month left to apply for a grant through the Open Ocean Research Grant Program!
🌊 Just launched: the Open Ocean Research Grant Program!
We’re offering up to $10k for individuals and $20k for teams using our data to tackle key ocean research questions.
Independent researchers & small teams welcome.
🔗 Apply: bit.ly/open-ocean-r...
#OceanScience #Fisheries #ResearchFunding
We’re offering up to $10k for individuals and $20k for teams using our data to tackle key ocean research questions.
Independent researchers & small teams welcome.
🔗 Apply: bit.ly/open-ocean-r...
#OceanScience #Fisheries #ResearchFunding
Open Ocean Research Grants Program
This research grant program aims to enhance ocean governance by publicly sharing data on human activity at sea to grow our community of practice and expand and improve Global Fishing Watch datasets.
bit.ly
May 20, 2025 at 9:43 PM
Just under one month left to apply for a grant through the Open Ocean Research Grant Program!
🌊 Just launched: the Open Ocean Research Grant Program!
We’re offering up to $10k for individuals and $20k for teams using our data to tackle key ocean research questions.
Independent researchers & small teams welcome.
🔗 Apply: bit.ly/open-ocean-r...
#OceanScience #Fisheries #ResearchFunding
We’re offering up to $10k for individuals and $20k for teams using our data to tackle key ocean research questions.
Independent researchers & small teams welcome.
🔗 Apply: bit.ly/open-ocean-r...
#OceanScience #Fisheries #ResearchFunding
Open Ocean Research Grants Program
This research grant program aims to enhance ocean governance by publicly sharing data on human activity at sea to grow our community of practice and expand and improve Global Fishing Watch datasets.
bit.ly
May 8, 2025 at 5:25 PM
🌊 Just launched: the Open Ocean Research Grant Program!
We’re offering up to $10k for individuals and $20k for teams using our data to tackle key ocean research questions.
Independent researchers & small teams welcome.
🔗 Apply: bit.ly/open-ocean-r...
#OceanScience #Fisheries #ResearchFunding
We’re offering up to $10k for individuals and $20k for teams using our data to tackle key ocean research questions.
Independent researchers & small teams welcome.
🔗 Apply: bit.ly/open-ocean-r...
#OceanScience #Fisheries #ResearchFunding
A new paper said our fishing algorithm overestimates effort! academic.oup.com/icesjms/arti...
However, it is based on how you interpret our algorithm. I think this paper interprets our algorithm incorrectly, but it may be our fault that we did not better communicate how to use our algorithm.
However, it is based on how you interpret our algorithm. I think this paper interprets our algorithm incorrectly, but it may be our fault that we did not better communicate how to use our algorithm.
Bias in Global Fishing Watch AIS data analyses results in overestimate of Northeast Atlantic pelagic fishing impact
Abstract. The ability to pinpoint fishing activity in the world’s oceans has greatly improved over the past decades, a period in which both satellite-based
academic.oup.com
April 4, 2025 at 7:02 PM
A new paper said our fishing algorithm overestimates effort! academic.oup.com/icesjms/arti...
However, it is based on how you interpret our algorithm. I think this paper interprets our algorithm incorrectly, but it may be our fault that we did not better communicate how to use our algorithm.
However, it is based on how you interpret our algorithm. I think this paper interprets our algorithm incorrectly, but it may be our fault that we did not better communicate how to use our algorithm.
We are now estimating carbon dioxide emissions from all vessels at sea! Learn more here: globalfishingwatch.org/article/mapp...
Mapping industrial vessel emissions at sea
Pilot study first to estimate the greenhouse gas emissions of all large industrial vessels operating in the ocean
globalfishingwatch.org
March 27, 2025 at 3:07 PM
We are now estimating carbon dioxide emissions from all vessels at sea! Learn more here: globalfishingwatch.org/article/mapp...
We have just updated our public fishing activity data. You can now download data for 2012-2024! Learn more: globalfishingwatch.org/insights/ask...
Here is fishing effort by latitude and day, across 12 years.
Here is fishing effort by latitude and day, across 12 years.
March 13, 2025 at 4:41 PM
We have just updated our public fishing activity data. You can now download data for 2012-2024! Learn more: globalfishingwatch.org/insights/ask...
Here is fishing effort by latitude and day, across 12 years.
Here is fishing effort by latitude and day, across 12 years.
Currently on a flight to Tokyo -- amazed to have wifi over the middle of the Pacific (even if it is slow).
Looking forward to meetings in Tokyo, then Taiwan, then Korea, over the next eight days.
Here's an image of fishing from AIS data in the region.
Looking forward to meetings in Tokyo, then Taiwan, then Korea, over the next eight days.
Here's an image of fishing from AIS data in the region.
February 19, 2025 at 1:40 AM
Currently on a flight to Tokyo -- amazed to have wifi over the middle of the Pacific (even if it is slow).
Looking forward to meetings in Tokyo, then Taiwan, then Korea, over the next eight days.
Here's an image of fishing from AIS data in the region.
Looking forward to meetings in Tokyo, then Taiwan, then Korea, over the next eight days.
Here's an image of fishing from AIS data in the region.
One year of vessel traffic in the Arctic, animated with sea ice. www.youtube.com/watch?v=Sw_f...
arctic 2019 Apple Devices HD Best Quality
YouTube video by David Kroodsma
www.youtube.com
January 23, 2025 at 6:10 AM
One year of vessel traffic in the Arctic, animated with sea ice. www.youtube.com/watch?v=Sw_f...
Our paper in Annual Review of Marine Science, "Improving Ocean Management Using Insights from Space," is now open access: www.annualreviews.org/content/jour...
www.annualreviews.org
January 23, 2025 at 5:54 AM
Our paper in Annual Review of Marine Science, "Improving Ocean Management Using Insights from Space," is now open access: www.annualreviews.org/content/jour...
Seeing friends and colleagues abandon their homes and flee the smoke and fire is bringing back painful memories of when we had to evacuate for the Caldor fire in 2021. It feels like no one is safe. Thinking of everyone in LA.
January 10, 2025 at 4:55 AM
Seeing friends and colleagues abandon their homes and flee the smoke and fire is bringing back painful memories of when we had to evacuate for the Caldor fire in 2021. It feels like no one is safe. Thinking of everyone in LA.
And because very extra 0.1 degree of warming is worse than the one before it, it is actually more important, not less.
Occasional reminder that there’s no, “it’s too late, its over” for anthropogenic climate change. Every molecule of CO2 that doesn’t go into the atmosphere makes a difference. Preventing 0.1 degree of warming makes a difference. Every bit of climate resilience we build together makes a difference.
January 10, 2025 at 12:46 AM
And because very extra 0.1 degree of warming is worse than the one before it, it is actually more important, not less.
We are currently trying to come up with a name for this new map projection. Any suggestions? Shown is vessel activity from AIS.
Same data again, but in a new Elastic projection I've been experimenting with that avoids disintegrating Australia.
January 9, 2025 at 1:30 AM
We are currently trying to come up with a name for this new map projection. Any suggestions? Shown is vessel activity from AIS.
If you follow us at Global Fishing Watch, be prepared to start seeing more maps with this projection :-). It is conceptually like Spilhaus, but with less distortion along the global coastline.
Same data again, but in a new Elastic projection I've been experimenting with that avoids disintegrating Australia.
January 8, 2025 at 8:52 PM
If you follow us at Global Fishing Watch, be prepared to start seeing more maps with this projection :-). It is conceptually like Spilhaus, but with less distortion along the global coastline.
Reposted by David Kroodsma
We are starting interviews for our new Senior Scientist, Head of Research Impact role. We have 105 candidates on the recruiting "short list", so this might take a while😅. Applications close tomorrow, so share if you know someone we should be talking to.
job-boards.greenhouse.io/globalfishin...
job-boards.greenhouse.io/globalfishin...
January 7, 2025 at 6:58 PM
We are starting interviews for our new Senior Scientist, Head of Research Impact role. We have 105 candidates on the recruiting "short list", so this might take a while😅. Applications close tomorrow, so share if you know someone we should be talking to.
job-boards.greenhouse.io/globalfishin...
job-boards.greenhouse.io/globalfishin...
Reposted by David Kroodsma
Two weeks ago I said "hey we should use this crazy new map projection" and today there is python code! Showing here global vessel presence density (from AIS) using the spilhaus projection in a single view where you can see the whole ocean.
January 7, 2025 at 4:51 PM
Two weeks ago I said "hey we should use this crazy new map projection" and today there is python code! Showing here global vessel presence density (from AIS) using the spilhaus projection in a single view where you can see the whole ocean.
Reposted by David Kroodsma
I have a new analysis over at The Climate Brink exploring how rates of warming have changed over the past century.
Post-1970, GHGs (CO2, CH4, etc.) would have led to just under 0.2C per decade, but falling aerosols (SO2) have increased that rate to 0.25C. www.theclimatebrink....
Post-1970, GHGs (CO2, CH4, etc.) would have led to just under 0.2C per decade, but falling aerosols (SO2) have increased that rate to 0.25C. www.theclimatebrink....
January 6, 2025 at 4:29 PM
I have a new analysis over at The Climate Brink exploring how rates of warming have changed over the past century.
Post-1970, GHGs (CO2, CH4, etc.) would have led to just under 0.2C per decade, but falling aerosols (SO2) have increased that rate to 0.25C. www.theclimatebrink....
Post-1970, GHGs (CO2, CH4, etc.) would have led to just under 0.2C per decade, but falling aerosols (SO2) have increased that rate to 0.25C. www.theclimatebrink....
Reposted by David Kroodsma
Very happy with the work we are doing with @odihq.bsky.social to develop a robust data ethics practice to complement our use of AI, especially as we evolve to detecting smaller and smaller vessels.
Read more in the ODI blog
Read more in the ODI blog
Embedding data ethics at Global Fishing Watch
Learn more about our work with Global Fishing Watch.
buff.ly
December 17, 2024 at 4:22 PM
Very happy with the work we are doing with @odihq.bsky.social to develop a robust data ethics practice to complement our use of AI, especially as we evolve to detecting smaller and smaller vessels.
Read more in the ODI blog
Read more in the ODI blog
Today at Global Fishing Watch, on Slack, we are discussing the best map projections for showing off the ocean (this is partially us procrastinating). Our default is an equal earth projection. But some argue we should use the Spilhaus projection instead, which is how "fish see the world."
January 3, 2025 at 7:35 PM
Today at Global Fishing Watch, on Slack, we are discussing the best map projections for showing off the ocean (this is partially us procrastinating). Our default is an equal earth projection. But some argue we should use the Spilhaus projection instead, which is how "fish see the world."
Reposted by David Kroodsma
@paulwoods.io @davidkroodsma.bsky.social I played around with this over break and managed to map vessel presence in the Spilhaus projection. It really shows how little vessel traffic the southern oceans have.
It's also a good candidate for a black light poster with this color scheme.
It's also a good candidate for a black light poster with this color scheme.
January 2, 2025 at 9:18 PM
@paulwoods.io @davidkroodsma.bsky.social I played around with this over break and managed to map vessel presence in the Spilhaus projection. It really shows how little vessel traffic the southern oceans have.
It's also a good candidate for a black light poster with this color scheme.
It's also a good candidate for a black light poster with this color scheme.
One of my resolutions for 2025 will be to share more of the maps we make at Global Fishing Watch. Here is all vessel traffic from AIS across five years. And if you want a 50 megabyte file of this image where you can zoom in to really high resolution, go here: drive.google.com/file/d/1RgBQ...
December 20, 2024 at 3:58 PM
One of my resolutions for 2025 will be to share more of the maps we make at Global Fishing Watch. Here is all vessel traffic from AIS across five years. And if you want a 50 megabyte file of this image where you can zoom in to really high resolution, go here: drive.google.com/file/d/1RgBQ...
Do you want to hear more about Global Fishing Watch Research? Sign up for our research newsletter: globalfishingwatch.org/stay-informe...
Here is our latest newsletter, covering whale strikes, our new R package, recent publications, events, and the role we are hiring for mailchi.mp/globalfishin...
Here is our latest newsletter, covering whale strikes, our new R package, recent publications, events, and the role we are hiring for mailchi.mp/globalfishin...
🐋 New in research: Global Fishing Watch data used for breakthrough study on whale-ship collisions
mailchi.mp
December 19, 2024 at 4:54 PM
Do you want to hear more about Global Fishing Watch Research? Sign up for our research newsletter: globalfishingwatch.org/stay-informe...
Here is our latest newsletter, covering whale strikes, our new R package, recent publications, events, and the role we are hiring for mailchi.mp/globalfishin...
Here is our latest newsletter, covering whale strikes, our new R package, recent publications, events, and the role we are hiring for mailchi.mp/globalfishin...
10 years ago (!) I self-published a book about my climate-change-awareness-raising bicycle adventure across North and South America. Reflections on the adventure and the self-publishing journey: rideforclimate.com/blog/?p=1490
December 13, 2024 at 6:22 PM
10 years ago (!) I self-published a book about my climate-change-awareness-raising bicycle adventure across North and South America. Reflections on the adventure and the self-publishing journey: rideforclimate.com/blog/?p=1490
Scary article about how vulnerable our satellite-dependent way of life is: www.nytimes.com/interactive/...
Opinion | The Warning
No shockwave. No mushroom cloud. But a space nuke would change life on Earth forever.
www.nytimes.com
December 8, 2024 at 10:56 PM
Scary article about how vulnerable our satellite-dependent way of life is: www.nytimes.com/interactive/...
Reposted by David Kroodsma
🚨🚨Job Alert!🚨🚨
#globalfishingwatch is on the lookout for a skilled Fisheries MCS Data Analyst to work alongside the Joint Analytical Cell (JAC) and global partners in our mission to combat Illegal, Unreported, and Unregulated (IUU) fishing.
#job #careers #hiring
#globalfishingwatch is on the lookout for a skilled Fisheries MCS Data Analyst to work alongside the Joint Analytical Cell (JAC) and global partners in our mission to combat Illegal, Unreported, and Unregulated (IUU) fishing.
#job #careers #hiring
Job Application for Fisheries Analyst MCS-JAC at Global Fishing Watch
Background: Global Fishing Watch is an international, non-profit organization committed to advancing ocean governance through increased transparency. We create and publicly share knowledge about…
buff.ly
December 7, 2024 at 8:49 PM
🚨🚨Job Alert!🚨🚨
#globalfishingwatch is on the lookout for a skilled Fisheries MCS Data Analyst to work alongside the Joint Analytical Cell (JAC) and global partners in our mission to combat Illegal, Unreported, and Unregulated (IUU) fishing.
#job #careers #hiring
#globalfishingwatch is on the lookout for a skilled Fisheries MCS Data Analyst to work alongside the Joint Analytical Cell (JAC) and global partners in our mission to combat Illegal, Unreported, and Unregulated (IUU) fishing.
#job #careers #hiring
What happens on this side of the world? It turns, a lot of fishing and shipping! Here's one year of fishing activity (yellow) and shipping (green) in the Pacific. This is Global Fishing Watch's data.
bsky.app/profile/hank...
bsky.app/profile/hank...
December 7, 2024 at 5:17 PM
What happens on this side of the world? It turns, a lot of fishing and shipping! Here's one year of fishing activity (yellow) and shipping (green) in the Pacific. This is Global Fishing Watch's data.
bsky.app/profile/hank...
bsky.app/profile/hank...