GHRC News

GHRC DAAC has been actively participating in Cloud Analysis Toolkit to Enable Earth Science (CATEES) initiative. GHRC system architect, Manil Maskey has setup a Jupyterhub instance in the Amazon cloud for all the DAACs to upload and share IPython notebooks. GHRC plans to maintain the Jupyterhub instance until NGAP-based permanent solution is available later this summer. Manil has also provided tutorials on using the Jupyterhub and sharing the notebooks. This week, GHRC data recipes and virtual collection creation tool have been uploaded and demoed to the group.

GHRC DAAC scientist Amanda Weigel and systems architect Manil Maskey presented at the NASA SERVIR Geospatial Information Technology Exchange meeting on April 21. SERVIR information technology representatives from all international hubs attended the meeting, which was held at the National Space Science and Technology Center (NSSTC) in Huntsville AL. Ms. Weigel briefed the group on the NASA Earth Science Data Systems, the NASA Earth Science Data and Information Systems (ESDIS) project and the Global Hydrology Resource Center Distributed Active Archive Center (GHRC DAAC), and demonstrated the Earthdata Search Client. Mr. Maskey led an interactive session on the ESDIS Common Metadata Repository (CMR), using client APIs to perform search and download of EOSDIS data.

The GHRC DAAC has published dataset revisions for two merged satellite products from the DISCOVER MEaSUREs project:

RSS Monthly 1-deg Merged Wind Climatology netCDF V7R01

RSS Monthly 1-deg Microwave Total Precipitable Water netCDF V7R01

These data sets contain one-degree grids of monthly means, a 20-year climatology file, and a trend file containing the cumulative global trend map on a one degree grid and the time-latitude plot.  They were constructed using the version-7 (V7) passive microwave geophysical ocean products made publicly available from Remote Sensing Systems (www.remss.com). This revision incorporates data from an additional sensor, the AMSR2 instrument on JAXA’s GCOM-W1 satellite.

The Global Hydrology Resource Center (GHRC) DAAC published NASA Global Precipitation Measurement Mission Ground Validation model datasets from two GPM GV field campaigns:

·      NOAA CPC Morphing Technique (CMORPH) IFloodS (DOI: 10.5067/GPMGV/IFLOODS/CMORPH/DATA201)

·      NOAA CPC Morphing Technique (CMORPH) IPHEx (DOI: 10.5067/GPMGV/IPHEX/CMORPH/DATA201).

Produced by NOAA’s Climate Prediction Center (CPC), these CMORPH datasets consist of global precipitation analysis data. The CMORPH technique uses precipitation estimates from low orbiter satellite microwave observations to produce global precipitation analyses at high temporal and spatial resolution. The Iowa Flood Studies (IFloodS) experiment took place in Iowa April–June 2013; the Integrated Precipitation and Hydrology Experiment (IPHEx) campaign took place in North Carolina May-June 2014. Data files include near real-time raw data and bias corrected data from NOAA in binary and netCDF format.

 

The GHRC DAAC has decommissioned its Sun StorEdge L700 tape library, which served as the DAAC’s data archive. GHRC Operations staff has completed migration of all datasets from the aging tape archive system to spinning disk and discontinued use of the system last year. Since that time, cross checks of data on the main data server, disk archive and tape archive have been completed and any discrepancies resolved. The DAAC maintains at least two online copies of all data and related documentation, with off-site backups for selected datasets.

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