This is a bash script, which Dr. Lifeng Luo from Michigan State University has
succeffuly download the 30-year (1979-2008) NCEP/NLDAS forcing data. For model
outputs, you need to change forcing into Noah/V2.7.2 for Noah model 
(remote_dir=/pub/raid0/nldas/Noah/V2.7.2), 
Mosaic for Mosaic model (remote_dir=/pub/raid0/nldas/Mosaic),
SAC (NLDAS-2) for SAC model(remote_dir=/pub/raid0/nldas/SAC),
SAC (NLDAS-1) for SAC modeol using Noah_PE (remote_dir=/pub/raid0/nldas/SAC_Noah_PE), 
VIC moddel (VIC4.0.3) using NLDAS-1 VIC version (remote_dir=/pub/raid0/nldas/VIC/V4.0.3), 
and VIC model (VIC4.0.5) using NLDAS-2 version (remote_dir=/pub/raid0/nldas/VIC/V4.0.5). 

Noah - NCEP Noah land surface model
Mosaic - NASA Mosaic land surface model
SAC - Office of Hydrologic Development of National Weather Service hydrological model (NLDAS-1 and NLDAS-2 version)
VIC - Princetton University/University of Washington hydrological model
(NLDAS-1 and NLDAS-2 version)

The forcing and model outpts can see:
http://www.emc.ncep.noaa.gov/mmb/nldas/LDAS8th/forcing/forcing_narr.shtml
http://www.emc.ncep.noaa.gov/mmb/nldas/LDAS8th/Mosaic.LDAS.output.htm

                                 Youlong Xia  NOAA/NCEP/EMC September 26, 2012

#Considering using the following bash script. Make sure the
# firewall setting on your local machine to allow ftp in active mode.

#!/bin/bash
#downloading NARR-based NLDAS2 forcing and model output from NCEP
# Lifeng Luo (lluo@msu.edu)

set -x
remote_host=ftp://ldas3.ncep.noaa.gov
remote_dir=/pub/raid0/nldas/forcing

for year in `seq 1979 2009`
do
   mkdir -p $year
   cd $year
      for month in 01 02 03 04 05 06 07 08 09 10 11 12
      do
         wget -c --no-passive-ftp
$remote_host$remote_dir/$year/$year$month.tar.gz
      done
   cd ..
done