Data Attribution: The data provided on this website is sourced from the Nansen Environmental and Remote Sensing Center (NERSC) Arctic Sea Ice Observing System (https://iceobs.nersc.no), using the NERSC developed NORSEX Sea Ice algorithm. It uses DMSP SMM/I Brightness temperatures (https://nsidc.org/). It is updated daily and intended for informational purposes only. If you use or reference this data, please attribute it to "NERSC Arctic Sea Ice Observing System" and include a link back to this website (https://iceobs.nersc.no). NERSC makes no warranties regarding the accuracy or completeness of the data.