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
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
🔗 lnkd.in/gSrKySCw
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
June 5, 2025 at 8:47 AM
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
🔗 lnkd.in/gSrKySCw
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
April 4, 2025 at 7:27 PM
I wrote a response here on linkedin: www.linkedin.com/posts/davidk...
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."
I think the answers are "a meaningful amount" and "yes."
April 4, 2025 at 6:53 PM
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."
I think the answers are "a meaningful amount" and "yes."
You can also download the CSVs here: globalfishingwatch.org/data-download/
Data Download Portal
globalfishingwatch.org
March 13, 2025 at 7:21 PM
You can also download the CSVs here: globalfishingwatch.org/data-download/
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
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
March 13, 2025 at 7:21 PM
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
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
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.
January 23, 2025 at 3:11 PM
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.
At some point I will get around to making this for more years than just 2019.
January 23, 2025 at 3:09 PM
At some point I will get around to making this for more years than just 2019.
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!
January 23, 2025 at 3:08 PM
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!
Nice! It is great to see this.
January 15, 2025 at 11:51 PM
Nice! It is great to see this.
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.
January 10, 2025 at 4:55 AM
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.