Remote Sensing of Polar Regions, University of Bremen
@polarbremen.bsky.social
#Satellites #Science #SeaIce #ExtremeLatitudes.
Remote Sensing of Polar Regions at University of Bremen,
Institute of Environmental Physics (IUP).
https://seaice.uni-bremen.de
Remote Sensing of Polar Regions at University of Bremen,
Institute of Environmental Physics (IUP).
https://seaice.uni-bremen.de
What satellites will we need for science and society by 2040 and beyond? This is the topic of the national science expert group workshop at Deutscher Wetterdienst @dwdderwetterdienst.bsky.social in Offenbach this week.
November 21, 2025 at 12:18 PM
What satellites will we need for science and society by 2040 and beyond? This is the topic of the national science expert group workshop at Deutscher Wetterdienst @dwdderwetterdienst.bsky.social in Offenbach this week.
Hi! 🤗 I’m Zhifeng, and I recently joined the group as a visiting PhD candidate from the Ocean University of China for 1 year. Coming from physical oceanography my current research focuses on retrieving summer sea ice concentration from passive microwave observations, with a focus on melt ponds.
November 17, 2025 at 1:06 PM
Hi! 🤗 I’m Zhifeng, and I recently joined the group as a visiting PhD candidate from the Ocean University of China for 1 year. Coming from physical oceanography my current research focuses on retrieving summer sea ice concentration from passive microwave observations, with a focus on melt ponds.
Intensive and very productive workshop at @esa.int ESRIN in #Frascati 🇮🇹 to write the science plan 📝 for the large, international #AntarcticaInSync initiative! 🤝
More information about Antarctica InSync: www.antarctica-insync.org
More information about Antarctica InSync: www.antarctica-insync.org
November 7, 2025 at 9:18 AM
Intensive and very productive workshop at @esa.int ESRIN in #Frascati 🇮🇹 to write the science plan 📝 for the large, international #AntarcticaInSync initiative! 🤝
More information about Antarctica InSync: www.antarctica-insync.org
More information about Antarctica InSync: www.antarctica-insync.org
Great to get the latest news about the AMSR3 instrument on the recently launched GOSAT-GW #satellite 🛰️, during the
JAXA PI meeting last week in #Tokyo. First data was shown and is looking great! 🥳 We are looking forward to make use of the new 183 GHz channels.
JAXA PI meeting last week in #Tokyo. First data was shown and is looking great! 🥳 We are looking forward to make use of the new 183 GHz channels.
October 27, 2025 at 9:26 AM
Great to get the latest news about the AMSR3 instrument on the recently launched GOSAT-GW #satellite 🛰️, during the
JAXA PI meeting last week in #Tokyo. First data was shown and is looking great! 🥳 We are looking forward to make use of the new 183 GHz channels.
JAXA PI meeting last week in #Tokyo. First data was shown and is looking great! 🥳 We are looking forward to make use of the new 183 GHz channels.
2 weeks ago, our colleague Marcus gave an overview of the CIMR L2 Snow depth retrieval implemented within the L2PAD project on the @esa.int #CIMR Expert User Group workshop in Barcelona. Now we're addressing the valuable comments and feedback. Another month till the detailed design review, let's go!
October 15, 2025 at 9:47 AM
2 weeks ago, our colleague Marcus gave an overview of the CIMR L2 Snow depth retrieval implemented within the L2PAD project on the @esa.int #CIMR Expert User Group workshop in Barcelona. Now we're addressing the valuable comments and feedback. Another month till the detailed design review, let's go!
Greetings from Potsdam! 4 of us were attending the general assembly of the (AC)3 research project www.ac3-tr.de this week. We showed and admired posters about different topics all the way from the #Arctic ocean to high clouds and discussed our cross-cutting activities.
September 25, 2025 at 6:50 PM
Greetings from Potsdam! 4 of us were attending the general assembly of the (AC)3 research project www.ac3-tr.de this week. We showed and admired posters about different topics all the way from the #Arctic ocean to high clouds and discussed our cross-cutting activities.
CONTRASTS wraps up after 2 months in the central Arctic aboard RV Polarstern: 61 days at sea, 30+ days on sea ice, terabytes of data, and 3 ice floes revisited across 3 ice regimes. Big thanks to the 43 crew supporting 57 scientists on RV Polarstern. AWI press release: www.awi.de/en/about-us/...
September 13, 2025 at 8:05 AM
CONTRASTS wraps up after 2 months in the central Arctic aboard RV Polarstern: 61 days at sea, 30+ days on sea ice, terabytes of data, and 3 ice floes revisited across 3 ice regimes. Big thanks to the 43 crew supporting 57 scientists on RV Polarstern. AWI press release: www.awi.de/en/about-us/...
As the giant #Antarctic iceberg #A23a is currently breaking apart, we created a video about its dance in the water in the last year, including spinning in a Taylor column! Even though A23a is not sea ice, the microwave signature is similar and it shows up in our data! Can you spot it in the video?
September 8, 2025 at 9:15 AM
As the giant #Antarctic iceberg #A23a is currently breaking apart, we created a video about its dance in the water in the last year, including spinning in a Taylor column! Even though A23a is not sea ice, the microwave signature is similar and it shows up in our data! Can you spot it in the video?
Hi! I’m ARIEL, an L-band microwave radiometer 📡, and this is my little buddy Sebastian (the pulka 🛷). Together, we traveled across 3 Arctic ice stations ❄️ to uncover the invisible (aka microwave) secrets of ever-changing summer sea ice and its thickness on the @awi.de CONTRASTS #expedition 🧊.
August 27, 2025 at 7:37 AM
Hi! I’m ARIEL, an L-band microwave radiometer 📡, and this is my little buddy Sebastian (the pulka 🛷). Together, we traveled across 3 Arctic ice stations ❄️ to uncover the invisible (aka microwave) secrets of ever-changing summer sea ice and its thickness on the @awi.de CONTRASTS #expedition 🧊.
Can the color of melt ponds reveal the sea-ice thickness below? 🧊 And can we measure this from #space? 🛰️ On the @awi.de CONTRASTS #expedition, we’re testing this with a 200+ band hyperspectral camera and co-located ice thickness measurements for a large variety of #Arctic ponds.
August 21, 2025 at 11:14 AM
Can the color of melt ponds reveal the sea-ice thickness below? 🧊 And can we measure this from #space? 🛰️ On the @awi.de CONTRASTS #expedition, we’re testing this with a 200+ band hyperspectral camera and co-located ice thickness measurements for a large variety of #Arctic ponds.
August 19, 2025 at 10:03 AM
One of our master students, Isabel Krüll, had the great opportunity to join a cruise of Le Commandant Charcot to do some research at the North pole. They were able to do 2 ice floe landings with drone flights, ice thickness measurements & buoy deployments and even saw a polar bear with its cub.
August 19, 2025 at 10:02 AM
One of our master students, Isabel Krüll, had the great opportunity to join a cruise of Le Commandant Charcot to do some research at the North pole. They were able to do 2 ice floe landings with drone flights, ice thickness measurements & buoy deployments and even saw a polar bear with its cub.
Update from the #Arctic from our #CONTRASTS expedition participants: A sunny, peaceful transit day brought a magical sight — a young polar bear 🐻❄️ wandering along the edge of an ice floe. It is very fascinating to see such a beautiful creature!
July 31, 2025 at 1:20 PM
Update from the #Arctic from our #CONTRASTS expedition participants: A sunny, peaceful transit day brought a magical sight — a young polar bear 🐻❄️ wandering along the edge of an ice floe. It is very fascinating to see such a beautiful creature!
Greetings from the CONTRASTS expedition: We already finished our first ice station with 4 successful days of melt pond reflectivity, L-band microwave emissivity + ice thickness measurements. The weather even allowed us to perform airborne 🚁 observations. Now we continue to our 2nd ice station! 🧊 📏
July 15, 2025 at 8:42 AM
Greetings from the CONTRASTS expedition: We already finished our first ice station with 4 successful days of melt pond reflectivity, L-band microwave emissivity + ice thickness measurements. The weather even allowed us to perform airborne 🚁 observations. Now we continue to our 2nd ice station! 🧊 📏
Today is the day: The 2 final candidates for the @esa.int Earth Explorer 11 mission, WIVERN and CAIRT, are being presented at the public User Consultation Meeting in Prague. Our group is involved in WIVERN. After today, a committee will recommend which of the satellites should be built & launched.
July 9, 2025 at 8:24 AM
Today is the day: The 2 final candidates for the @esa.int Earth Explorer 11 mission, WIVERN and CAIRT, are being presented at the public User Consultation Meeting in Prague. Our group is involved in WIVERN. After today, a committee will recommend which of the satellites should be built & launched.
We reached the sea ice edge! We're amazed to see the first sea ice during the CONTRASTS expedition and hope to get to our first ice station in the next days. Stay tuned!
July 7, 2025 at 8:25 AM
We reached the sea ice edge! We're amazed to see the first sea ice during the CONTRASTS expedition and hope to get to our first ice station in the next days. Stay tuned!
Today we are boarding RV Polarstern in Tromsø for the two month #CONTRASTS cruise to the #Arctic You can follow us here: www.meereisportal.de/contrasts There is also a live webcam.
July 3, 2025 at 7:51 AM
Today we are boarding RV Polarstern in Tromsø for the two month #CONTRASTS cruise to the #Arctic You can follow us here: www.meereisportal.de/contrasts There is also a live webcam.
Next week, many of us will be at the @esa.int's Living Planet Symposium #LPS25 in Vienna! You can find us for sure in the #snow session (A.09.11) on Monday and in the #seaice session (A09.09) on Thursday. We are looking forward to this conference and hope to meet some of you there!
June 20, 2025 at 9:45 AM
After some time of traveling in South America, our former PhD candidate, now postdoc, Hannah Niehaus has rejoined our group 🤗 While her PhD project was about melt ponds on #Arctic sea ice, she will now be looking into sea ice age and types in both hemispheres within the @esa.int #CCI project #SAGE 🧊
June 19, 2025 at 3:21 PM
After some time of traveling in South America, our former PhD candidate, now postdoc, Hannah Niehaus has rejoined our group 🤗 While her PhD project was about melt ponds on #Arctic sea ice, she will now be looking into sea ice age and types in both hemispheres within the @esa.int #CCI project #SAGE 🧊
This week we had our annual group retreat: 3 days in the countryside full off scientific discussions, group retrospectives & bonfires! This is a great change to our daily routines & a great chance to learn something new (whether it's AI tools for our science, chopping wood, or making waffles)!
June 6, 2025 at 2:08 PM
This week we had our annual group retreat: 3 days in the countryside full off scientific discussions, group retrospectives & bonfires! This is a great change to our daily routines & a great chance to learn something new (whether it's AI tools for our science, chopping wood, or making waffles)!
Our group tracks #seaice extent. To create time series (see below), we align data from newer satellites with older sources using @nsidc.bsky.social data. It's troubling that maintenance may be halted (eos.org/research-and...).
We hope the value of these datasets is recognized before it’s too late!
We hope the value of these datasets is recognized before it’s too late!
June 2, 2025 at 3:02 PM
Our group tracks #seaice extent. To create time series (see below), we align data from newer satellites with older sources using @nsidc.bsky.social data. It's troubling that maintenance may be halted (eos.org/research-and...).
We hope the value of these datasets is recognized before it’s too late!
We hope the value of these datasets is recognized before it’s too late!
Getting ready for the #Arctic #expedition with #Polarstern! ❄️⛴️
As part of our last preparations we spent a full day learning how to stay safe during polar #bear encounters while working on the ice — including bear behavior training and handling firearms (strictly for self-defense in emergencies). 🐻❄️
As part of our last preparations we spent a full day learning how to stay safe during polar #bear encounters while working on the ice — including bear behavior training and handling firearms (strictly for self-defense in emergencies). 🐻❄️
May 23, 2025 at 1:55 PM
Getting ready for the #Arctic #expedition with #Polarstern! ❄️⛴️
As part of our last preparations we spent a full day learning how to stay safe during polar #bear encounters while working on the ice — including bear behavior training and handling firearms (strictly for self-defense in emergencies). 🐻❄️
As part of our last preparations we spent a full day learning how to stay safe during polar #bear encounters while working on the ice — including bear behavior training and handling firearms (strictly for self-defense in emergencies). 🐻❄️
Greetings from Denver! Last week we've been at the #AMS American Meteorological Society conference for Polar Meteorology and Oceanography with amazing presentations from #MOSAiC and #AC3 (www.ac3-tr.de).
May 19, 2025 at 9:19 AM
Greetings from Denver! Last week we've been at the #AMS American Meteorological Society conference for Polar Meteorology and Oceanography with amazing presentations from #MOSAiC and #AC3 (www.ac3-tr.de).
Hi everyone, I’m Linxin! I joined the group last September as a #PhD in the (AC)³ program. My Master’s focused on machine-learning-based sea ice motion estimation. Now I study sea ice deformation and its link to Arctic Amplification. I love #painting and #nature. Nice to meet you!
April 22, 2025 at 1:12 PM