DOI: 10.5281/zenodo.4818373
title: Proxy SWOT Discharge Estimates derived from WRF-Hydro in Alaska for Parameter Estimation

description: Data accompanying publication. GENERAL INFORMATION 1. Title of Dataset: Proxy SWOT Discharge Estimates derived from WRF-Hydro in Alaska for Parameter Estimation 2. Author Information:<br> A. Nicholas Elmer<br> Universities Space Research Association<br> Huntsville, Alabama, USA<br> nicholas.j.elmer@nasa.gov B. James McCreight<br> National Center for Atmospheric Research<br> Boulder, Colorado, USA C. Christopher Hain<br> Earth Science Office<br> NASA Marshall Space Flight Center<br> Huntsville, Alabama, USA 3. Date of data collection:<br> Susitna sub-basins: 2012-03-02 to 2012-09-15<br> Tanana sub-basins: 2014-03-02 to 2014-11-02 4. Geographic location of data collection: Southcentral Alaska (USA)<br> West longitude: 153.3 W<br> East longitude: 142.0 W<br> South latitude: 61.2 N<br> North latitude: 65.3 N 5. Funding source: <br> Data collection was supported by NASA Headquarters under the NASA Postdoctoral Program <br> at NASA Marshall Space Flight Center administered by Universities Space Research Association. DATA & FILE OVERVIEW 1. File List:<br> basins_SWOTcalib_wgs84* (.shp, .shx, .dbf, .prj)<br> susitna_enset.nc<br> susitna_truth.nc<br> tanana_enset.nc<br> tanana_truth.nc 2. Relationship between files:<br> This dataset contains:<br> 1) Georeferenced (WGS 1984) polygon shapefiles of Alaskan sub-basins for which data is available.<br> 2) Truth streamflow derived from a calibrated, high-resolution WRF-Hydro simulation. Proxy SWOT discharge<br> estimates were obtained from these files by:<br> i) temporally sampling using the Aviso+ projected SWOT orbit <br> (https://www.aviso.altimetry.fr/en/missions/future-missions/swot/orbit.html), then<br> ii) applying Monte Carlo methods described in Elmer et al. (2021).<br> 3) Simulated streamflow obtained from various parameter sets using a lower-resolution WRF-Hydro simulation. METHODOLOGICAL INFORMATION. 1. Description of methods for collection:<br> Model output was obtained from an Observing System Simulation Experiment (OSSE) using WRF-Hydro. A<br> complete description of this OSSE is contained in Elmer et al. (2021) 2. Methods for processing the data:<br> Model output was processed and organized into NetCDF files using the Python. These files form the basis of<br> analysis in Elmer et al. (2021). Proxy SWOT data were calculated from tanana_truth.nc and susitna_truth.nc<br> using the methods as described in Elmer et al. (2021).<br> DATA-SPECIFIC INFORMATION: I. basins_SWOTcalib_wgs84.shp: 1. Shapefile coordinate system: WGS 1984<br> 2. Number of Shapefiles: 1<br> 3. Number of Polygons per Shapefile: 10<br> 4. Number of Attributes per polygon: 1<br> 5. Attribute list:<br> A. basin_id: sub-basin letter corresponding to Figure 2 (Elmer et al. 2021) II. tanana_truth.nc and susitna_truth.nc<br> 1. description:<br> Files containing the "truth" streamflow for each basin obtained from a WRF-Hydro simulation<br> calibrated against in situ gauges. <br> 2. dimensions:<br> time: hours since simulation start<br> feature_id: WRF-Hydro channel reach unique identifier<br> 3. variables:<br> streamflow [ &lt;time&gt; x &lt;feature_id&gt; ] : truth streamflow [m^3 s^-1]<br> order [ &lt;feature_id&gt; ] : Strahler stream order<br> longitude [ &lt;feature_id&gt; ] : longitude of channel reach [decimal degrees]<br> latitude [ &lt;feature_id&gt; ] : latitude of channel reach [decimal degrees] III. tanana_enset.nc and susitna_enset.nc<br> 1. description:<br> Files containing simulated streamflow for each parameter set.<br> 2. dimensions:<br> time: hours since simulation start<br> feature_id: WRF-Hydro channel reach unique identifier<br> member: parameter set number<br> 3. variables:<br> streamflow [ &lt;time&gt; x &lt;member&gt; x &lt;feature_id&gt; ] : simulated streamflow [m^3 s^-1]<br> order [ &lt;feature_id&gt; ] : Strahler stream order<br> longitude [ &lt;feature_id&gt; ] : longitude of channel reach [decimal degrees]<br> latitude [ &lt;feature_id&gt; ] : latitude of channel reach [decimal degrees]