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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
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🌊 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!

submitted 5 days ago • 1 comment

Just under one month left to apply for a grant through the Open Ocean Research Grant Program!

submitted 21 days ago • 0 comments

🌊 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

submitted 33 days ago • 1 comment

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.

submitted 67 days ago • 1 comment

We are now estimating carbon dioxide emissions from all vessels at sea! Learn more here: globalfishingwatch.org/article/mapp...

submitted 75 days ago • 5 comments

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.

submitted 89 days ago • 1 comment

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.

submitted 112 days ago • 0 comments

One year of vessel traffic in the Arctic, animated with sea ice. www.youtube.com/watch?v=Sw_f...

submitted 138 days ago • 2 comments

Our paper in Annual Review of Marine Science, "Improving Ocean Management Using Insights from Space," is now open access: www.annualreviews.org/content/jour...

submitted 138 days ago • 0 comments

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.

submitted 151 days ago • 1 comment

And because very extra 0.1 degree of warming is worse than the one before it, it is actually more important, not less.

submitted 152 days ago • 0 comments

We are currently trying to come up with a name for this new map projection. Any suggestions? Shown is vessel activity from AIS.

submitted 153 days ago • 0 comments

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.

submitted 153 days ago • 1 comment

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...

submitted 154 days ago • 0 comments

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.

submitted 154 days ago • 3 comments

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....

submitted 155 days ago • 22 comments

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

submitted 175 days ago • 1 comment

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."

submitted 158 days ago • 2 comments

@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.

submitted 159 days ago • 2 comments

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...

submitted 172 days ago • 4 comments