Tsfc is the best estimate of the surface temperature, and is principally based on slight corrections to the Eppley temperatures and the Barnes temperatures when the Eppley was known to be wrong. The line albedo for this period is substantially lower than the tower albedo and more representative for the area-averaged albedo. The National Science Foundation supported this research with grants to the U.S. Army Cold Regions Research and Engineering Laboratory, NOAA's Environmental Technology Laboratory, and the Naval Postgraduate School. Res. , submitted. Our current version is ASFG2.0 and was completed in October 1999.
Wind direction is true wind direction accounting for the rotation of the tower during the year.
Both objective and some subjective editing has been done at various stages of the data processing. Hourly averages were calculated as long as at done at various stages of the data processing. Hourly averages were calculated as long as at least 4 10-minute periods during the hour contained 2 or more minutes of good data. Fluxes are also eliminated when the airflow was from the ship or through the tower. The data does include intercomparison calibrations done during the year.