NLDAS Homepage


30-year (1979-2008) retrospective NLDAS forcing and outputs of four models are in NCEP ldas3 ftp site and realtime run is in NCEP nomad6 ftp site

NEW REALEASE: NLDAS-2 Noah full package is released and can be downloaded from the link Noah2.8, Distributed River Routing code and routed hourly data from four NLDAS models can be downloaded from the link Streamflow, and post-processed SAC soil moisture data can be downloaded from the link Post-Processed SAC Soil Moisture . NLDAS became NCEP Operationas on 5 August 2014 and the Opertional Products can see from the link Products and NLDAS-2 transition Plan "Due to nomad6 and ldas3 sever problem, the public users cannot sccess these two severs to download NLDAS-2 related products. We are apologied for this inconvenience. NCO helpdesk is diligently fixing this problem. We will give a further notice if the problem is fixed."

North American Land Data Assimilation System (NLDAS)

North American Land Data Assimilation (NLDAS) is being developed that will lead to more accurate reanalysis and forecast simulations by numerical weather prediction (NWP) models. Specifically, this system will reduce the errors in the stores of soil moisture and energy which are often present in NWP models and which degrade the accuracy of forecasts. NLDAS is currently running retrospectively and in near real-time on a 1/8th-degree grid resolution. The system is currently forced by terrestrial (NLDAS) precipitation data, space-based radiation data and numerical model output. In order to create an optimal scheme, the projects involve several LSMs, many sources of data, and several institutions. Data from the project can be accessed on the NLDAS forcing pages, the NLDAS model output pages, as well as on the NLDAS Realtime Image Generator page. This is an official NLDAS website which includes NLDAS overview, land surface characteristics parameters, forcing data, land models, model output, publications, useful links, and NLDAS drought monitor.
This webpage originally developed and constructed by Brian Cosgrove, Matthew Rodell, and Charles Alonge for NASA GFSC. It was transitioned to NOAA/NCEP/EMC in June 2008. Now this web is maintained and updated by Michael Ek and Youlong Xia for NLDAS Project.

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NOAA webpage NASA webpage Website Maintained at NOAA/NCEP/EMC NLDAS Technical Contact: Youlong Xia,
Responsible Official: Michael Ek,
NCEP webpage
last updated: 12/18/08

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