Tools All data files in this archive are provided in netCDF format. For your convenience, read files in C, with an accompanying Makefile (see below), are included. There are also many software packages freely available or licensed with utilities to access the data in netCDF-formatted files. You can find a comprehensive list of these software packages at http://www.unidata.ucar.edu/software/netcdf/software.html read_C.c read_PosWind.c Makefile Data File Descriptions There are two types of files for this project. The one-day averaged currents are located in the C*.cdf files. These files contain time, latitude, longitude and 15-m current components from drifters. They can be read with read_C.c. The PosWind*.cdf files contain time, latitude, longitude, 15-m current components and wind speed and direction. These files can be read with read_PosWind.c.