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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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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 10 days ago • 0 comments

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

submitted 37 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 37 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 50 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 50 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 51 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 51 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 53 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 53 days ago • 4 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 54 days ago • 23 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 74 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 57 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 57 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 71 days ago • 4 comments

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...

submitted 72 days ago • 1 comment

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

submitted 78 days ago • 2 comments

Scary article about how vulnerable our satellite-dependent way of life is: www.nytimes.com/interactive/...

submitted 82 days ago • 1 comment

🚨🚨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

submitted 84 days ago • 0 comments

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...

submitted 84 days ago • 3 comments

In addition to oil slicks, we will also use this satellite to find dark vessels that are trying to avoid being tracked thanks to ESA #remotesensing

submitted 85 days ago • 0 comments

🚨🚨Job Alert!🚨🚨 We are looking for a senior scientist to help my team at Global Fishing Watch drive impact. This is an opportunity to build relationships that apply our technology to help make change. Please share! job-boards.greenhouse.io/globalfishin...

submitted 84 days ago • 0 comments