Fig 7. CryoSat 2 (AWI, v2.6) sea ice thickness anomaly for April  2024 relative to 2011-2023. Arctic Sea Ice Volume AnomalySea Ice Volume is calculated using the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS, Zhang and Rothrock, 2003) developed at APL/PSC.  Anomalies for each day are calculated relative to the average over the 1979 -2023 period for that day of the year to remove the annual cycle. The model mean annual cycle of sea ice volume over this period ranges from 28,000 km3 in April to 11,500 km3 in September.  The blue line represents the trend calculated from January 1 … Continue reading PIOMAS Arctic Sea Ice Volume Reanalysis