[Parameters: Topic='TERRESTRIAL HYDROSPHERE', Term='SURFACE WATER', Variable_Level_1='WATER CHANNELS']
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UNH, GRDC, Global Composite Runoff Data Set (v1.0) Entry ID: UNH_GRDC_GCRDS |
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Summary
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Abstract:
The present data set demonstrates the potential of combining observed river discharge information with a climate-driven Water Balance Model in order to develop composite runoff fields which are consistent with observed discharges. Such combined runoff fields preserve the accuracy of the discharge measurements as well as the spatial and temporal distribution of simulated runoff, thereby providing the "best estimate" of terrestrial runoff over large domains. The method applied in the preparation of this data set utilizes a gridded river network at 30-minute spatial resolution to represent the riverine flow pathways and to link the continental land mass to oceans through river channels. Selected gauging stations from the Global Runoff Data Centre data archive were co-registered to a simulated topological network (STN-30p) developed at the University of New Hampshire. Inter-station regions between gauging stations along the STN-30p network were identified. Inter-station discharge and runoff were calculated to compare observed runoff with outputs from the water balance model (WBM) simulation. Correction coefficients based on the ratio of observed and simulated runoff for inter-station areas were calculated and applied against simulated runoff to create composite runoff fields. The present CD contains not only "UNH-GRDC Composite Runoff Fields V1.0" but also intermediate data sets, such as station attributes and long-term monthly regimes of the selected gauging stations. Also included on the CD are the simulated topological network (STN-30p), STN-30p derived attributes for the selected stations and gridded fields of the inter-station regions along STN-30p. An HTML based data explorer was developed to help users of the CD-ROM view the data. With a standard web browser and the CD it is possible to navigate from a global view of the data, down to a subbasin or station level. The printed version of the report can be ordered free of charge from GRDC (grdc@bafg.de) or WMO (dhwr@gateway.wmo.ch). Note: Due to inaccuracies in the topographical dataset used for the compilation of the simulated river network, errors may occur in the graphical display of certain lower-order rivers. Users are invited to send their comments and notification of errors to the e-mail addresses shown above. The full report on the UNH/GRDC is available here - "http://www.grdc.sr.unh.edu/html/paper/index.html" |
Related URL
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Link:
VIEW PROJECT HOME PAGE
Description: The Global Hydrological Archive and Analysis System (GHAAS)is a set of computer-based tools and data sets developed and routinely applied by staff at the Water Systems Analysis Group at the University of New Hampshire in their ongoing studies of the terrestrial water cycle. This research encompasses data set development, modeling, and global change impact assessment. |
Geographic Coverage
| N: 90.0 | S: -90.0 | E: 180.0 | W: -180.0 |
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Data Set Citation
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Dataset Originator/Creator:
University of New Hampshire
Dataset Title: UNH/GRDC Composite Runoff Fields Dataset Publisher: University of New Hampshire Data Presentation Form: ARC/INFO ascii format, ARC/INFO workspace Online Resource: http://www.grdc.sr.unh.edu/html/Data/index.html |
Temporal Coverage
| Start Date: 1800-01-01 |
Location Keywords
Data Resolution
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Temporal Resolution:
Monthly
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Science Keywords
| TERRESTRIAL HYDROSPHERE >GROUND WATER >GROUND WATER DISCHARGE/FLOW [Definition] |
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >DRAINAGE [Definition] |
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >RIVERS/STREAMS [Definition] |
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >TOTAL SURFACE WATER [Definition] |
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >WATER CHANNELS [Definition] |
| LAND SURFACE >LAND USE/LAND COVER >LAND COVER [Definition] |
ISO Topic Category
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GEOSCIENTIFIC INFORMATION
IMAGERY/BASE MAPS/EARTH COVER INLAND WATERS |
Quality
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Due to inaccuracies in the topographical dataset used for the compilation of the simulated river network, errors may occur in the graphical display of certain lower-order rivers. |
Keywords
| DISCHARGE |
| RUNOFF |
| STATION ATTRIBUTES |
| WATER BALANCE MODEL |
| WORLD BASIN |
| WORLD RUNOFF |
| WORLD STATION |
| TEMS |
| GTOS |
| G3OS |
Originating Center
Data Center
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Global Runoff Data Center, Federal Institute of Hydrology, Germany
[Information]
Data Center URL: http://grdc.bafg.de/
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Water Systems Analysis Group, Complex Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire
[Information]
Data Center URL: http://www.wsag.unh.edu/
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Distribution
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Distribution_Format:
ARC/INFO coverage
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Distribution_Format:
ASCII interchange files
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Personnel
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BALAZS
M.
FEKETE Role: TECHNICAL CONTACT Contact Address: Institute for the Study of Earth, Oceans, and Space University of New Hampshire City: Durham Province or State: NH Postal Code: 03824 Country: USA |
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CHARLES
J.
VOROSMARTY Role: TECHNICAL CONTACT Phone: (603) 862-1792 Fax: (603) 862-0188 Email: charles.vorosmarty at unh.edu Contact Address: Water Systems Analysis Group Complex Systems Research Center Institute for the Study of Earth, Oceans, and Space University of New Hampshire Morse Hall, 39 College Road City: DURHAM Province or State: NH Postal Code: 03824 Country: USA |
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TYLER
B.
STEVENS Role: DIF AUTHOR Phone: (301) 614-6898 Fax: 301-614-5268 Email: Tyler.B.Stevens at nasa.gov Contact Address: NASA Goddard Space Flight Center Global Change Master Directory City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA |
Creation and Review Dates
Last DIF Revision Date:
2009-04-20
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