Forecasts of 2018 September sea ice extent using May data

These are my forecasts submitted to the 2018 Sea Ice Outlook. I'll be providing monthly updates as we progress through the melt season, so check back!

Fig 1: September Arctic sea ice extent forecasts using May ice concentration data in red. The 2018 forecast is in bold, while the vertical line shows the prediction confidence interval (1 S.D.) of the 2018 forecast. The solid black lines are the observed extent using the NSIDC Arctic Sea Ice Index v3 while the black crosses and light grey line show the forecast using linear trend persistence.
Fig 2: As in Fig 1 above but for the Alaskan sea ice extent.
Fig 3: As in Fig 1 above but for the total Antarctic sea ice extent