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| Type: | Resource | |
| Storage: | The size of this resource is 2.9 KB | |
| Created: | Oct 05, 2023 at 7:59 p.m. | |
| Last updated: | Oct 06, 2023 at 12:09 p.m. | |
| DOI: | 10.4211/hs.84c2b029f97343a59d0739115d4087f1 | |
| Citation: | See how to cite this resource |
| Sharing Status: | Published |
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| Views: | 289 |
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Abstract
This data release provides the historic streamflow simulations from versions 1.2, 2.0, and 2.1 of the National Water Model re-structured for time series extraction. The data is hosted on a distributed set of THREDDS Data Servers and is accessible via OPeNDAP at the following URLs:
Version 1.2
(https://thredds.hydroshare.org/thredds/catalog/nwm/retrospective/catalog.html?dataset=NWM_Retrospective/nwm_retro_full.ncml)
- Spans 1993-01-01 00:00:00 to 2017-12-31 23:00:00
- Contains 219,144 hourly time steps for
- 2,729,077 NHD reaches
Version 2.0
(https://thredds.hydroshare.org/thredds/catalog/nwm/retrospective/catalog.html?dataset=NWM_Retrospective/nwm_v2_retro_full.ncml)
- Spans 1993-01-01 00:00:00 to 2018-12-31 00:00:00
- Contains 227,904 hourly time steps for
- 2,729,076 NHD reaches
Version 2.1
(https://cida.usgs.gov/thredds/catalog/demo/morethredds/nwm/nwm_v21_retro_full.ncml)
- Spans 1979-02-02 18:00:00 to 2020-12-31 00:00:00
- Contains 367,439 hourly time steps for
- 2,776,738 NHD reaches
The `nwmTools` R package provides easier interaction with the OPeNDAP resources. Package documentation can be found here (https://mikejohnson51.github.io/nwmTools/) and the GitHub repository here (https://github.com/mikejohnson51/nwmTools).
This effort is supported by the Consortium of Universities for the Advancement of Hydrologic Science, Inc. under the HydroInformatics Fellowship.
Current Publication:
J.M. Johnson, David L. Blodgett, Keith C. Clarke, Jon Pollack. (2020). "Restructuring and serving web-accessible streamflow data from the NOAA National Water Model historic simulations". _Nature Scienfic Data_.
Subject Keywords
Coverage
Spatial
Temporal
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Content
readme.md
NOAA National Water Model (NWM) Reanalysis Data at RENCI
To date, the NOAA National Water Model (NWM) simulates streamflow across on the medium resolution (1:100,000 scale) National Hydrography Dataset Plus Version 2 (NHDPlus). The NHDPlus describes the hydrographic network of the United States discretized into units representing surface water features that share similar hydrologic characteristics. Each surface water feature can be represented as the catchment divide (archetypal watershed for that segment), its flowline, and/or outlet (using the Open Geospatial Consortium HY_Feature terminology). Computationally, NWM forecasts are made by routing water from a land surface model (NOAH-MP) over a 250-meter grid centered on the NHD flowline to the outlet of each NHD catchment. The COMID scheme was adopted as the indexing unit in the NWM such that a forecast for a given COMID is the routed flow rate at the NHD outlet at any given hour.
With many versions of the NWM, a multi-decadal, hourly reanalysis product is released. The raw data, stored as hourly NetCDF files, are made publicly available on Amazon by the Open Cloud Consortium here.
This data resource documents a redistributed version of this data that has been optimized for time series extraction and made available on a distributed set of THREDDS Data Servers with OPeNDAP access.
Available data
Please see the resource abstract
DDS
The data description structure (DDS) can be viewed at the NcML page for each respective resource (linked above). More broadly each resource includes:
- A 1D time array - hours since 1970-01-01 00:00
- A 1D latitude array - coordinate (Y) information
- A 1D longitude array - coordinate (X) information WGS84
- A 1D feature_id array - NHDPlus V2 COMID (NWM forecast ID)
- A 2D streamflow array - Q (cms) [feature_id, time]
R package
The nwmTools R package provides easier interaction with the OPeNDAP resources. Package documentation can be found here and the GitHub repository here.
Collaborators:
Support:
This effort is supported by the Consortium of Universities for the Advancement of Hydrologic Science, Inc. under the HydroInformatics Fellowship. See program here
Publications
J.M. Johnson, David L. Blodgett, Keith C. Clarke, Jon Pollack. (2023). "Restructuring and serving web-accessible streamflow data from the NOAA National Water Model historic simulations". Nature Scientfic Data.
Related Resources
| This resource updates and replaces a previous version | Johnson, M., D. Blodgett (2023). NOAA National Water Model Reanalysis Data at RENCI, HydroShare, http://www.hydroshare.org/resource/a1e329ad20654e72b7b423f991bf9251 |
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
|---|---|---|
| CUAHSI | HydroInformatics Innovation Fellowship | National Science Foundation (NSF) Cooperative Agreement No. EAR- 1849458 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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