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David Kroodsma @davidkroodsma.bsky.social · Jun 5

Also, we’re hosting an event this afternoon to share how researchers can access and apply our datasets—and to spotlight our Open Ocean Research Grants Program:
🔗 lnkd.in/gSrKySCw

This link will take you to a page that’s not on LinkedIn

lnkd.in

David Kroodsma @davidkroodsma.bsky.social · Jun 5

🌊 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!

This link will take you to a page that’s not on LinkedIn

lnkd.in

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David Kroodsma @davidkroodsma.bsky.social · May 20

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

David Kroodsma @davidkroodsma.bsky.social · May 8

🌊 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

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

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David Kroodsma @davidkroodsma.bsky.social · May 8

🌊 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

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

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David Kroodsma @davidkroodsma.bsky.social · Apr 4

I wrote a response here on linkedin: www.linkedin.com/posts/davidk...

Editor's Choice - Global Fishing Watch overestimates pelagic fishing… | David Kroodsma

🎣 I was excited to read the ICES study, “Bias in Global Fishing Watch AIS Data Analyses Results in Overestimate of Northeast Atlantic Pelagic Fishing Impact.” - https://lnkd.in/eam2EN79 The paper ...

www.linkedin.com

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David Kroodsma @davidkroodsma.bsky.social · Apr 4

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.

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

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David Kroodsma @davidkroodsma.bsky.social · Apr 4

That's a great question, and one I think we can probably answer in the next year or so.

I think the answers are "a meaningful amount" and "yes."

David Kroodsma @davidkroodsma.bsky.social · Mar 27

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

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David Kroodsma @davidkroodsma.bsky.social · Mar 13

You can also download the CSVs here: globalfishingwatch.org/data-download/

Data Download Portal

globalfishingwatch.org

David Kroodsma @davidkroodsma.bsky.social · Mar 13

Here is the BigQuery query to get this public data:

SELECT
date_diff(date, "2012-01-01", day) days,
floor(cell_ll_lat*4) lat_index,
sum(fishing_hours) fishing_hours
FROM
`global-fishing-watch.fishing_effort_v3.fleet_daily_100_v3`
where
fishing_hours > 0
group
by days, lat_index

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David Kroodsma @davidkroodsma.bsky.social · Mar 13

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.

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David Kroodsma @davidkroodsma.bsky.social · Feb 19

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.

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David Kroodsma @davidkroodsma.bsky.social · Jan 23

This is all vessels. And using imagery (sar or optical) up there is going to be horribly difficult because the density of vessels is low and the density of icebergs is high.

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David Kroodsma @davidkroodsma.bsky.social · Jan 23

At some point I will get around to making this for more years than just 2019.

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David Kroodsma @davidkroodsma.bsky.social · Jan 23

Yeah, that’s didn’t realize that either until I made the map. You can also see how critical those rivers in northern Russia must be for transportation—but only for half the year!

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David Kroodsma @davidkroodsma.bsky.social · Jan 23

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

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David Kroodsma @davidkroodsma.bsky.social · Jan 23

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

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David Kroodsma @davidkroodsma.bsky.social · Jan 15

Nice! It is great to see this.

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David Kroodsma @davidkroodsma.bsky.social · Jan 10

It has been almost three and a half years since Caldor, and given the three "mild" fire seasons since then, it's amazing how quickly I have forgotten about the risk posed by the forests behind my neighborhood. LA is reminding me.

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David Kroodsma @davidkroodsma.bsky.social · Jan 10

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.

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David Kroodsma @davidkroodsma.bsky.social · Jan 10

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

Deb Chachra @debcha.bsky.social · Jan 9

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.

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David Kroodsma @davidkroodsma.bsky.social · Jan 9

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

Tim @tim.hochberg.io · Jan 8

Same data again, but in a new Elastic projection I've been experimenting with that avoids disintegrating Australia.

Map of the world's oceans in an as yet unnamed, experimental Elastic projection showing vessel presence according to AIS between 2017 and 2021. This projection has Antartica in the middle and most of the world's coastlines are projected onto the edges. Unlike the Elastic-2 projection, Australia is recognizable as a continent. The areas around Antartica and near the north pole are mostly empty, but the rest of the map has many vessel tracks.

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David Kroodsma @davidkroodsma.bsky.social · Jan 8

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.

Tim @tim.hochberg.io · Jan 8

Same data again, but in a new Elastic projection I've been experimenting with that avoids disintegrating Australia.

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Reposted by David Kroodsma

Paul Woods @paulwoods.io · Jan 7

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...

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Reposted by David Kroodsma

Paul Woods @paulwoods.io · Jan 7

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.

Global vessel presence map using Spilhaus projection

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