The brown line indicates the number of days for which the temperature was positive during this period. Black bars show the number of days when the maximum temperature exceeded 0 °C, and the red bars indicate the number of days when the minimum temperature exceeded 0 °C. There is no statistically significant increase in the temperature at Terra Nova Bay over this time period. The line at the bottom indicates the years for which we have sufficient satellite imagery to resolve whether the surface hydrology was exporting water off the ice shelf. The years during which we identified export at a waterfall are indicated with a waterfall symbol. These temperature data are available at http://www.climantartide.it.