Update for NASA IceBridge Narrow Swath ATM L1B Data

The NASA IceBridge Narrow Swath ATM L1B Elevation and Return Strength, Version 2 data set now includes data for Arctic 2014. This data set contains spot elevation measurements of Greenland, Arctic, and Antarctic sea ice acquired using the NASA Airborne Topographic Mapper (ATM) 4CT3 narrow scan instrumentation. For further information and to access the data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), see the IceBridge Narrow Swath ATM L1B catalog page.