EUMETSAT OSI SAF
@osi-saf.eumetsat.int
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EUMETSAT's Ocean and Sea Ice Satellite Application Facility. 🛰 We are the dedicated @eumetsat.bsky.social centre for processing satellite data at the ocean-atmosphere interface.
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osi-saf.eumetsat.int
Our #seaice team has developed a Sea Ice Index, online since several years, at osisaf-hl.met.no/v2p2-sea-ice.... It offers visuals of the trends and evolution of sea ice at hemispheric, global and regional scales. It includes the sea-ice extent and area since 1978, and is continuously updated.
Sea-Ice extent daily data visualised on a year-long graphic. Each year since 1979 are displayed in a different color. On the left side, the graph for the Arctic display the regular decrease of ice coverage in the northern hemisphere. On the right one, one can see the trend is not that clear, but the last few years are dramatically low.
osi-saf.eumetsat.int
Looking forward to produce Sea Surface Temperature products from METimage data!
eumetsat.int
What better way to celebrate #WSW2025 than with the first images from METimage on the newly launched Metop-SGA1 satellite! 🤩

The images capture clouds, storms and Earth’s surface across Europe, North Africa, and beyond in stunning detail.

This animation stitches images from 25–27 Sept 2025. Cont.🧵
Reposted by EUMETSAT OSI SAF
eumetsat.int
We’re marking 25 years of Climate@EUMETSAT!

Join us in Darmstadt (28–30 Oct) for the EUMETSAT Climate Symposium & help shape future climate activity, from guiding products & services to ensuring our space-based observing system meets society’s needs.

🚨 Last chance to register! Visit bit.ly/46T6IPP
osi-saf.eumetsat.int
The v2.3 of our Sea-Ice Index is based on our Sea-Ice Concentration Interim Climate Data Record using AMRS2. Last 16 days are based on the fast-track data generated faster than the nominal ones, that may differ slightly.

More information on our product page: osi-saf.eumetsat.int/products/osi...
Global Sea Ice Concentration interim climate data record (AMSR2), release 3 | OSI SAF
osi-saf.eumetsat.int
osi-saf.eumetsat.int
As usually, September is the month when the #Arctic sees its minimum extent (5,071,505km² on 07/09/2025) and the #Antarctic its maximum (18,281,296km² on 13/09/2025)

#SeaIce, #Climate
osi-saf.eumetsat.int
In September, the #SeaIce global extent was 5.8% below 1991-2020 mean. Since the beginning of records:
- #Arctic, 13th lowest monthly mean, with 11.5% less extent (-681,066km²)
- #Antarctic, 4th lowest monthly mean, with 4.7% less extent (-897,973km²)
for more: osisaf-hl.met.no/v2p3-sea-ice...
Graph showing the Arctic Sea Ice Extent daily value for each year since 1978 (each year is represented with a curve of a different color) Graph showing the Antarctic Sea Ice Extent daily value for each year since 1978 (each year is represented with a curve of a different color)
osi-saf.eumetsat.int
The v2.3 of our Sea-Ice Index is based on our Sea-Ice Concentration Interim Climate Data Record using AMRS2. Last 16 days are based on the fast-track data generated faster than the nominal ones, that may differ slightly.

More information on our product page: osi-saf.eumetsat.int/products/osi...
Global Sea Ice Concentration interim climate data record (AMSR2), release 3 | OSI SAF
osi-saf.eumetsat.int
osi-saf.eumetsat.int
As usually, September is the month when the #Arctic sees its minimum extent (5,071,505km² on 07/09/2025) and the #Antarctic its maximum extent (18,281,296km² on 13/09/2025)
#SeaIce, #Climate
osi-saf.eumetsat.int
On this view, the winds are overimposed on GOES-19 data. Check our notebooks to learn how to do this type of image : gitlab.eumetsat.int/eumetlab/oce...
osi-saf.eumetsat.int
Cyclones #Humberto and #Imelda are developing in the Atlantic off the US coast. These two nearby low-pressure systems are interacting and will merge, in the rare Fujiwara effect.
Last night, #HY-2C captured the two systems in a single swath, allowing our team at @knmi.nl to retrieved the wind.
Wind retrieval displaying the cyclone Umberto and Imelda, as of the 01/10/2025, 00:30 UTC.
osi-saf.eumetsat.int
Come to meet our #Climate data team!
eumetsat.int
📣Calling policy & decision makers, & climate service providers!
Join the EUMETSAT Climate Symposium: 28–30 Oct, Darmstadt, Germany
Hear from:
🔹UNFCCC - advancing the Paris Agreement
🔹IPCC - satellite data
🔹DG CLIMA - supporting climate policy objectives
Register 👉 www.eventsforce.net/eumetsat/fro...
osi-saf.eumetsat.int
Our team is actively taking part in the #Ocean thematic of @eumetsat.int 2025 satellite conference. More to come in the Sea-Ice session!
OSI SAF team at EUMETSAT2025 Ocean Panel session at EUMETSAT2025 OSI SAF presentation during user's session at EUMETSAT2025 OSI SAF team at EUMETSAT2025
Reposted by EUMETSAT OSI SAF
eumetsat.int
Policy/decision maker?
National/European climate service provider?
Join us for the EUMETSAT Climate Symposium, 28–30 October!
Dusan Chrenek from DG CLIMA says, "Implementing the EU’s climate policies and understanding progress towards the goals relies on high-quality climate information...."
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osi-saf.eumetsat.int
In August 2025, the #SeaIce global extent was 8.4% below 1991-2020 mean. Since the begining of record (1978):
- #Arctic, 8th lowest monthly mean, with 12% less extent (-823.904km²)
- #Antarctic, 3rd lowest monthly mean, with 7% less exent (-1.264.062km²)

for more: osisaf-hl.met.no/v2p3-sea-ice...
Graph showing the Arctic Sea Ice Extent daily value for each year since 1978 (each year is represented with a curve of a different color) Graph showing the Antarctic Sea Ice Extent daily value for each year since 1978 (each year is represented with a curve of a different color)
osi-saf.eumetsat.int
Last day to register to our #scatterometer #wind webinar!
osi-saf.eumetsat.int
Next week, on Tuesday 02/09/2025, our #ocean #wind #scatterometer retrieval team at @knmi.nl will explain all you need to know about these products 🌬️🛰️ from the catalogue of @osi-saf.eumetsat.int
and @copernicusmarine.bsky.social .
Don't forget to register on: eumetsat.zoom.us/webinar/regi...
osi-saf.eumetsat.int
Next week, on Tuesday 02/09/2025, our #ocean #wind #scatterometer retrieval team at @knmi.nl will explain all you need to know about these products 🌬️🛰️ from the catalogue of @osi-saf.eumetsat.int
and @copernicusmarine.bsky.social .
Don't forget to register on: eumetsat.zoom.us/webinar/regi...
Reposted by EUMETSAT OSI SAF
osi-saf.eumetsat.int
On Tuesday 02/09/2025, our #ocean #wind #scatterometer retrieval team at @knmi.nl will explain all you need to know about these satellite products 🌬️🛰️ from the catalogue of @osi-saf.eumetsat.int and @copernicusmarine.bsky.social.
Register now to this free seminar: eumetsat.zoom.us/webinar/regi...
Ocean Surface Scatterometer Winds webinar. Two sessions available on 02/09/2025 at 08:00UTC or 13:00UTC
Reposted by EUMETSAT OSI SAF
signeaaboe.bsky.social
We're approaching the annual sea-ice minimum in the Arctic. Over the past few days, the sea-ice extent has been at a record low for this time of year in the Greenland Sea and Svalbard region.

Data source: @osi-saf.eumetsat.int
Line graph showing the daily sea-ice extent in the Svalbard region from 1978 to August 2025. The thick black line represents 2025, while the previous years are displayed in decadal-grouped colors. The past couple of days have shown a record-low ice extent for this time of year.
This map shows the average Arctic sea-ice concentration over the first 12 days of August 2025. For comparison, the mean sea-ice extent over the same days for 1981-2010 is represented by an orange contour.

Source data is OSI SAF sea-ice concentration CDR v3.0
osi-saf.eumetsat.int
On Tuesday 02/09/2025, our #ocean #wind #scatterometer retrieval team at @knmi.nl will explain all you need to know about these satellite products 🌬️🛰️ from the catalogue of @osi-saf.eumetsat.int and @copernicusmarine.bsky.social.
Register now to this free seminar: eumetsat.zoom.us/webinar/regi...
Ocean Surface Scatterometer Winds webinar. Two sessions available on 02/09/2025 at 08:00UTC or 13:00UTC
osi-saf.eumetsat.int
The MSG SST product is however still distributed at least until the MTG product gets the operational status.

We invite you to use the SST MTG product and provide feedback to us, either positive or negative.