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NCDC NOMADS GrADS Data Server

This GrADS Data Server (GDS) is provided by the NOAA Operational Model Archive and Distribution System (NOMADS) Project and is maintained by NOAA at the National Climatic Data Center . This server provides online access to scientific datasets.

For more data, including NARR and Hi-Res models, Switch to:
NCDC NOMADS GrADS Data Server # 2

Dataset Reload Information:
This GDS is designed for datasets with high frequency updates. Reloads occur every 30 minutes at 5 and 35 past every hour to gather the latest datasets. Reloads typically take 90 to 180 seconds to complete, if you experience a pause while browsing or accessing data, this is likely the reason.

  • Dataset metadata directory

    Browse lists of files on this server. From these lists, you can select files and view metadata (e.g., grid description, dates, and variables) for those files.

    The metadata for each dataset also contains the URL for that dataset. With an OPenDap enabled client (e.g., GrADS), you can use this URL to access the dataset directly. Follow the "info" link for a dataset, copy the URL, and provide it to your client as required.

    For each model, the list of variables, timesteps, and levels provided by the "info" link is a composite for that model from runs over multiple grids and cycles. Each variable, timestep, and level in the list will not appear in all datasets for that model. To determine what variables, timesteps, and levels a specific dataset actually contains, view the "table of contents" for that dataset via the link below.

  • User's guide

    Learn how to use this server.

For more information: