The dataset used to drive the land-surface models (LSMs) for NCA-LDAS is the surface forcing data from Phase 2 of the North American Land Data Assimilation System (NLDAS-2). The NLDAS-2 forcing data have a 1/8th-degree grid spacing and range from 01 Jan 1979 to present. The temporal resolution is hourly.
For more about the NLDAS-2 forcing data, please see the NLDAS-2 README.
For convenience to the user, the daily-averaged NLDAS-2 forcing fields used for NCA-LDAS are included in the datasets available at the GES DISC.