A 51-year hydrological reanalysis between 1948 and 1998 over the continental US was recently completed at Climate Prediction Center of NCEP, NOAA. The project used Noah land surface model (LSM) with forcing data regridded from NCEP/NCAR Reanalysis data and the new CPC daily and hourly precipitation data. The best available orography, soil and vegetation types, etc. are used as the boundary conditions of this study. The output fields include all components of energy, water mass balance, snow cover and depth, and 4 layers of soil temperature, moisture (both liquid and frozen) below the ground. Three types of data files are archived in this dataset. They include the restart files, the forcing fields to run the Noah Land Surface Model, and the output files from the 1948-1998 runs. The output files are available on line for registerd users.

The daily restarting files and the hourly forcing fields are stored on NCAR's mass storage systems (MSS) only.

There are 24 variables including 8 energy components and skin temperature every 3 hours and 15 daily averages. See variable lists below for details. For the NOAH_h.grb (three hourly), NOAH_d.grb (daily accumulation or instantaneous) and NOAH_dd.grb (daily mean), different users may extract and generate sub-dataset for themselves.

You can find Noah LSM used in this study from: Noah LSM ver_2.5.2