A few weeks ago, JAXA adjusted the Arctic sea iced data downwards in version 2. But it is much worse than it seems – they are adjusting recent years downwards, and older years upwards. Note that in version 1, current sea ice was at the 2000’s average, and in version 2 it is below it.
Like with temperature and sea level data, government climate scientists are tampering with data to make it appear that the past was colder, had lower sea level, and had more sea ice. Perhaps Hansen has been consulting with JAXA.