An progressed view of world sea ice


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Earth’s declining ice is no doubt one of the vital clearest indicators of local weather exchange. A brand new high-resolution sea-ice focus information document has simply been launched as a part of ESA’s Climate Change Initiative – offering new insights of sea ice focus around the globe.
In contemporary many years, the relentless upward push in international temperatures has brought on a relating to relief within the extent and thickness of sea ice. The Arctic area specifically has witnessed a speedy lack of sea ice, with ESA satellite tv for pc observations offering alarming proof of this pattern.

The affects are profound, because it now not most effective disrupts the lives of indigenous communities but additionally impacts polar flora and fauna, international climate patterns and oceanic currents.

ESA’s Climate Change Initiative’s Sea Ice The workforce has now launched a brand new information document protecting 30 years (1991-2020) of sea-ice focus in upper decision. Although the dataset is not so long as the 40-year data already to be had, it permits us to look the ice in a lot more element.

Thomas Lavergne, senior scientist on the Norwegian Meteorological Institute and science lead for the CCI Sea Ice undertaking, explains, “Our workforce has processed the high-frequency, upper decision imagery from the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager Sounder (SSMIS) to acquire a clearer image of sea ice focus around the globe.”

“Although the dataset is shorter, it is an advanced, sharpened version of that from Eumetsat OSI SAF and reveals more detail to improve model predictions and understanding of Arctic dynamics.”

The symbol at the left displays the ocean ice focus from Eumetsat OSI SAF whilst the picture at the proper displays the larger stage of main points captured with the brand new dataset launched through ESA’s Climate Change Initiative.

The information is processed from microwave imagery and Numerical Weather Prediction information via a devoted set of rules advanced through the CCI Sea Ice workforce. The information have been then validated the use of information from the Copernicus Sentinel-1 radar undertaking which gives all-weather sea-ice mapping features.

Dirk Notz, from the University of Hamburg, commented, “For the local weather analysis group, the brand new, excessive decision sea-ice product through ESA is truly thrilling! All all over the world, modeling teams are recently growing the following era of local weather fashions that goal at a grid decision of only some kilometers.

“To evaluate these models, and to learn how well we understand the processes that drive the ongoing sea-ice loss on these scales, having access to satellite data with a similar spatial resolution is absolutely crucial. This new product couldn’t be more timely!”

Late summer time sea-ice extent within the Arctic

These long-term datasets, compiled with information from a lot of satellites, permit researchers to check the long-term traits and diversifications within the Arctic and Antarctic, contributing to a greater figuring out of the polar reaction to international warming and progressed prediction of long term exchange.

Thomas Lavergne continues, “We hope that this higher resolution dataset will benefit its users and will help gain new insights about the regional and local scales linking sea ice to other elements of the Earth system.”

This dataset comes a couple of months after the CCI Sea Ice workforce launched a ‘historic’ sea ice dataset to expose how sea ice shaped within the early Nineteen Seventies.

The workforce, the use of ‘satellite tv for pc archaeology,’ reprocessed observations from the Electrically Scanning Microwave Radiometer (esmr) onboard the Nimbus-5 satellite tv for pc, to derive international sea ice focus and extent from 1972–1977, which predate sea ice local weather information data from fashionable satellite tv for pc radiometers (which began in 1979).

Both the brand new high-resolution dataset and the early-Nineteen Seventies dataset may also be accessed and downloaded from the Climate Change Initiative’s Open Data Portal,

having a look forward

The Special Report for a 1.5°C Global Warming paperwork that to restrict international warming to one.5°C above pre-industrial ranges may just ‘considerably’ cut back the chance of sea ice-free summers within the Arctic with admire to a 2°C warming.

Although satellite tv for pc observations are the basis for many of our wisdom concerning the evolution of the worldwide sea ice quilt, growth continues to be acutely had to make stronger the observations of the Sea Ice Essential Climate Variable, specifically to reach higher spatial decision, higher consistency throughout satellite tv for pc missions and longer time collection.


The information amassed now not most effective support our wisdom of sea ice focus, but additionally beef up decision-making processes and the improvement of efficient mitigation and adaptation methods.

Governments, policymakers and medical communities depend closely on those satellite tv for pc observations to evaluate the environmental have an effect on, expect long term eventualities, and tell insurance policies for sustainable control of the Arctic area.

The significance of the Arctic is mirrored within the Copernicus program this is now evolving to put into effect new satellite tv for pc features prioritizing new Arctic measurements which can be urgently wanted through Copernicus Services.

This comprises the impending Copernicus Imaging multi-frequency Microwave Radiometer (CIMR) and the Copernicus Polar Ice and Snow Topography Altimeter (crystal) missions that may in combination give you the sustained, long-term observations wanted for polar local weather tracking, local weather analysis and marine services and products.

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