Peter T Fretwell
@ptfretwell.bsky.social
Scientist at British Antarctic Survey, Cambridge and author. Interest include Science, nature, cartography, Polar regions and satellite imagery/ remote sensing.
Reposted by Peter T Fretwell
Great to visit BAS yesterday to chat penguins and meet more of the wildlife from space community (what a cool name for a research theme).
January 27, 2026 at 9:15 PM
Great to visit BAS yesterday to chat penguins and meet more of the wildlife from space community (what a cool name for a research theme).
Reposted by Peter T Fretwell
Friday ice update - #Arctic sea ice extent is currently the *lowest* on record (JAXA data)...
• about 500,000 km² below the 2010s mean
• about 1,090,000 km² below the 2000s mean
• about 1,640,000 km² below the 1990s mean
• about 2,110,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i...
• about 500,000 km² below the 2010s mean
• about 1,090,000 km² below the 2000s mean
• about 1,640,000 km² below the 1990s mean
• about 2,110,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i...
January 23, 2026 at 1:29 PM
Friday ice update - #Arctic sea ice extent is currently the *lowest* on record (JAXA data)...
• about 500,000 km² below the 2010s mean
• about 1,090,000 km² below the 2000s mean
• about 1,640,000 km² below the 1990s mean
• about 2,110,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i...
• about 500,000 km² below the 2010s mean
• about 1,090,000 km² below the 2000s mean
• about 1,640,000 km² below the 1990s mean
• about 2,110,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i...
There are almost 300,000 data points in the IWC blue whale catch record, not one catch is recorded in the area of recent summer sea ice loss near the coast of West Antarctica. This shows that that Antarctic summer sea ice has not been as low as it is now for more than a century.
January 23, 2026 at 9:42 AM
There are almost 300,000 data points in the IWC blue whale catch record, not one catch is recorded in the area of recent summer sea ice loss near the coast of West Antarctica. This shows that that Antarctic summer sea ice has not been as low as it is now for more than a century.
Reposted by Peter T Fretwell
Our first paper from the 'EPIC' project- 'How will Emperor Penguins Respond to Changing Ice Conditions?'🐧❄️ - is now out. 🎉
My first first-author penguin paper🐧! w co-authors @changingice.bsky.social, Chris Stokes, Melanie Marochov, @ptfretwell.bsky.social, Stéphanie Jenouvrier
tinyurl.com/4635pdwh
My first first-author penguin paper🐧! w co-authors @changingice.bsky.social, Chris Stokes, Melanie Marochov, @ptfretwell.bsky.social, Stéphanie Jenouvrier
tinyurl.com/4635pdwh
Response of emperor penguins to 40 years of changing ice conditions at the Astrid, Mertz and SANAE colonies using satellite remote sensing (1984–2024) | Antarctic Science | Cambridge Core
Response of emperor penguins to 40 years of changing ice conditions at the Astrid, Mertz and SANAE colonies using satellite remote sensing (1984–2024)
www.cambridge.org
January 21, 2026 at 10:58 AM
Our first paper from the 'EPIC' project- 'How will Emperor Penguins Respond to Changing Ice Conditions?'🐧❄️ - is now out. 🎉
My first first-author penguin paper🐧! w co-authors @changingice.bsky.social, Chris Stokes, Melanie Marochov, @ptfretwell.bsky.social, Stéphanie Jenouvrier
tinyurl.com/4635pdwh
My first first-author penguin paper🐧! w co-authors @changingice.bsky.social, Chris Stokes, Melanie Marochov, @ptfretwell.bsky.social, Stéphanie Jenouvrier
tinyurl.com/4635pdwh
For many years we have watched the Wilkins Ice shelf slowly break up. In 2009 it detached from Charcot Island to form Attenborough Strait. Yesterday, the last sliver joining it to Rothschild Island began to disintegrate. I'm waiting for tomorrow's image.
January 19, 2026 at 6:08 PM
For many years we have watched the Wilkins Ice shelf slowly break up. In 2009 it detached from Charcot Island to form Attenborough Strait. Yesterday, the last sliver joining it to Rothschild Island began to disintegrate. I'm waiting for tomorrow's image.
There's a lot of chat about the new subglacial map of Antarctica on the BBC that was generated using inverse modelling. Spot the difference:
January 16, 2026 at 1:44 PM
There's a lot of chat about the new subglacial map of Antarctica on the BBC that was generated using inverse modelling. Spot the difference:
Reposted by Peter T Fretwell
The past 3yrs were 1.5C warmer than preindustrial & experts say we're underestimating the impacts:
“This is Titanic risk modelling, looking backwards from the... Titanic in April 1912 & predicting a smooth voyage. This fails the 1st principles of risk management” www.newscientist.com/article/2511...
“This is Titanic risk modelling, looking backwards from the... Titanic in April 1912 & predicting a smooth voyage. This fails the 1st principles of risk management” www.newscientist.com/article/2511...
Sooner-than-expected climate impacts could cost the world trillions
A report warns that we may have seriously underestimated the rate of warming, which could damage economic growth
www.newscientist.com
January 14, 2026 at 12:48 PM
The past 3yrs were 1.5C warmer than preindustrial & experts say we're underestimating the impacts:
“This is Titanic risk modelling, looking backwards from the... Titanic in April 1912 & predicting a smooth voyage. This fails the 1st principles of risk management” www.newscientist.com/article/2511...
“This is Titanic risk modelling, looking backwards from the... Titanic in April 1912 & predicting a smooth voyage. This fails the 1st principles of risk management” www.newscientist.com/article/2511...
Reposted by Peter T Fretwell
Following on from our Penguin event 18/12/25 with Peter and Lisa Fretwell, we made a donation to the WWF Climate Fund, thanks to the attendees who wore penguin colours or costumes. If you would like to support this worthy cause, then please follow this link:-
support.wwf.org.uk/climate-reco...
support.wwf.org.uk/climate-reco...
January 14, 2026 at 2:48 PM
Following on from our Penguin event 18/12/25 with Peter and Lisa Fretwell, we made a donation to the WWF Climate Fund, thanks to the attendees who wore penguin colours or costumes. If you would like to support this worthy cause, then please follow this link:-
support.wwf.org.uk/climate-reco...
support.wwf.org.uk/climate-reco...
The satellite tags from our recent emperor penguin fieldwork are still going strong. Some have traveled amazing distances!
January 7, 2026 at 1:34 PM
The satellite tags from our recent emperor penguin fieldwork are still going strong. Some have traveled amazing distances!
Reposted by Peter T Fretwell
We launched the second Ticket to Antarctica campaign, virtually taking 70,000 schoolchildren on an extraordinary journey from Canada to Antarctica, as they followed the flight of our Twin Otter aircraft and learned first-hand about polar science, aviation, and life at the bottom of the Earth.
December 29, 2025 at 6:03 PM
We launched the second Ticket to Antarctica campaign, virtually taking 70,000 schoolchildren on an extraordinary journey from Canada to Antarctica, as they followed the flight of our Twin Otter aircraft and learned first-hand about polar science, aviation, and life at the bottom of the Earth.
Reposted by Peter T Fretwell
A fantastic crowd enjoyed our penguin-themed event with Peter & Lisa Fretwell last Thursday. We all learnt a lot about these beloved birds and are now fully versed in how to do the various types of penguin walks!
Wishing you all a very Happy Christmas from Authors In Oundle.
Wishing you all a very Happy Christmas from Authors In Oundle.
December 24, 2025 at 2:02 AM
A fantastic crowd enjoyed our penguin-themed event with Peter & Lisa Fretwell last Thursday. We all learnt a lot about these beloved birds and are now fully versed in how to do the various types of penguin walks!
Wishing you all a very Happy Christmas from Authors In Oundle.
Wishing you all a very Happy Christmas from Authors In Oundle.
Reposted by Peter T Fretwell
We’ve been developing a 3D Digital Twin of Rothera, incorporating detailed Building Information Models (BIM) of the Discovery Building and other station facilities. We’ve also integrated live tracking data for our ship, aircraft, and vehicles. In this image you can see our ship docked at the wharf.
December 18, 2025 at 1:29 PM
We’ve been developing a 3D Digital Twin of Rothera, incorporating detailed Building Information Models (BIM) of the Discovery Building and other station facilities. We’ve also integrated live tracking data for our ship, aircraft, and vehicles. In this image you can see our ship docked at the wharf.
Reposted by Peter T Fretwell
Authors in Oundle have had a very successful year and I'd like to send sincere thanks to everyone involved in the business.
Have a wonderful festive break and I hope to see you at events in 2026!
Helen Shair, Founder and Director.
www.authorsinoundle.co.uk
Have a wonderful festive break and I hope to see you at events in 2026!
Helen Shair, Founder and Director.
www.authorsinoundle.co.uk
December 14, 2025 at 1:40 PM
Authors in Oundle have had a very successful year and I'd like to send sincere thanks to everyone involved in the business.
Have a wonderful festive break and I hope to see you at events in 2026!
Helen Shair, Founder and Director.
www.authorsinoundle.co.uk
Have a wonderful festive break and I hope to see you at events in 2026!
Helen Shair, Founder and Director.
www.authorsinoundle.co.uk
Looking forward to next week www.authorsinoundle.co.uk/aio-event/pe...
Peter & Lisa Fretwell: The Penguin Book of Penguins | Authors in Oundle
www.authorsinoundle.co.uk
December 12, 2025 at 2:11 PM
Looking forward to next week www.authorsinoundle.co.uk/aio-event/pe...
Emperor penguins have to gamble between being too far from the ice edge, or moving closer and the ice breaking up under them. This time it looks like they got it wrong.
December 5, 2025 at 2:11 PM
Emperor penguins have to gamble between being too far from the ice edge, or moving closer and the ice breaking up under them. This time it looks like they got it wrong.
Reposted by Peter T Fretwell
On Antarctica Day, #Sentinel-2 imagery highlights how remote emperor penguin colonies can be detected from space. They leave a visible signature on the ice, helping researchers track colonies in areas too difficult to access on the ground 🛰️
#SentinelOnline #ESA #EarthObservation
#SentinelOnline #ESA #EarthObservation
December 1, 2025 at 10:02 AM
On Antarctica Day, #Sentinel-2 imagery highlights how remote emperor penguin colonies can be detected from space. They leave a visible signature on the ice, helping researchers track colonies in areas too difficult to access on the ground 🛰️
#SentinelOnline #ESA #EarthObservation
#SentinelOnline #ESA #EarthObservation
Flying off from Snow Hill Island
December 2, 2025 at 9:39 PM
Flying off from Snow Hill Island
Reposted by Peter T Fretwell
Happy Antarctica Day! We’ve recently updated this map to show consultative and non-consultative signatories of the Antarctic Treaty, signed on this day in 1959. The Treaty designates Antarctica a continent for peace and science. December 1st raises awareness of this global agreement and its goals.
December 1, 2025 at 5:01 PM
Happy Antarctica Day! We’ve recently updated this map to show consultative and non-consultative signatories of the Antarctic Treaty, signed on this day in 1959. The Treaty designates Antarctica a continent for peace and science. December 1st raises awareness of this global agreement and its goals.
Reposted by Peter T Fretwell
This will be our final book launch for 2025!
Located in the stunning Great Hall of Oundle School, you will have the opportunity to meet the authors of 'The Penguin book of penguins. Suitable for anyone over the age of 13, it will be signed personally for you on the night.
Book your ticket now!
Located in the stunning Great Hall of Oundle School, you will have the opportunity to meet the authors of 'The Penguin book of penguins. Suitable for anyone over the age of 13, it will be signed personally for you on the night.
Book your ticket now!
November 27, 2025 at 3:44 PM
This will be our final book launch for 2025!
Located in the stunning Great Hall of Oundle School, you will have the opportunity to meet the authors of 'The Penguin book of penguins. Suitable for anyone over the age of 13, it will be signed personally for you on the night.
Book your ticket now!
Located in the stunning Great Hall of Oundle School, you will have the opportunity to meet the authors of 'The Penguin book of penguins. Suitable for anyone over the age of 13, it will be signed personally for you on the night.
Book your ticket now!
We've been doing drone surveys and tagging the emperors of Snow Hill Island.
November 25, 2025 at 12:46 AM
We've been doing drone surveys and tagging the emperors of Snow Hill Island.
Reposted by Peter T Fretwell
Could you be our next walrus detective? 🕵
️
Satellite imagery has helped scientists discover a new walrus haul-out site. And it's sparked a call for your help! 📢
To safeguard their future, we urgently need to understand how they’re affected by the climate crisis.👇
www.wwf.org.uk/learn/walrus...
️
Satellite imagery has helped scientists discover a new walrus haul-out site. And it's sparked a call for your help! 📢
To safeguard their future, we urgently need to understand how they’re affected by the climate crisis.👇
www.wwf.org.uk/learn/walrus...
November 24, 2025 at 10:09 AM
Could you be our next walrus detective? 🕵
️
Satellite imagery has helped scientists discover a new walrus haul-out site. And it's sparked a call for your help! 📢
To safeguard their future, we urgently need to understand how they’re affected by the climate crisis.👇
www.wwf.org.uk/learn/walrus...
️
Satellite imagery has helped scientists discover a new walrus haul-out site. And it's sparked a call for your help! 📢
To safeguard their future, we urgently need to understand how they’re affected by the climate crisis.👇
www.wwf.org.uk/learn/walrus...
We've had whales galore today. Humpbacks next to the boat, minkes within 20 metres and killer whales swimming under the bow. Welcome to Antarctica.
November 23, 2025 at 11:27 PM
We've had whales galore today. Humpbacks next to the boat, minkes within 20 metres and killer whales swimming under the bow. Welcome to Antarctica.
Reposted by Peter T Fretwell
Reminder.
November 23, 2025 at 7:37 AM
Reminder.
Reposted by Peter T Fretwell
Art exhibition this weekend!
Illustrations from our book: The Penguin book of penguins. Framed and unframed, as well as a selection of Christmas cards.
Pop along to the Red Lion pub, Swaffham prior, Cambridge anytime after 1pm this weekend! What are you waiting for?
Illustrations from our book: The Penguin book of penguins. Framed and unframed, as well as a selection of Christmas cards.
Pop along to the Red Lion pub, Swaffham prior, Cambridge anytime after 1pm this weekend! What are you waiting for?
November 21, 2025 at 2:42 PM
Art exhibition this weekend!
Illustrations from our book: The Penguin book of penguins. Framed and unframed, as well as a selection of Christmas cards.
Pop along to the Red Lion pub, Swaffham prior, Cambridge anytime after 1pm this weekend! What are you waiting for?
Illustrations from our book: The Penguin book of penguins. Framed and unframed, as well as a selection of Christmas cards.
Pop along to the Red Lion pub, Swaffham prior, Cambridge anytime after 1pm this weekend! What are you waiting for?