A ntarctica isn’t a floating chunk of ice like the Arctic. Beneath its frozen surface sits a solid continent of mountains, ...

The time series of Tanana river ice breakup dates can be used to indicate climate change in the region. Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.

including ESRI Shapefiles, MapInfo tables, Geographic Mark-up Language (GML), and Keyhole Mark-up Language (KML) suitable for viewing in Google Earth. Blue outlined yellow areas on the map below ...