• G-WADI Finds Success in Merging High-Resolution Satellite-Based Precipitation Fields and Point-Scale Rain Gauge Measurements

    Wednesday, November 1, 2017
    Satellite-based precipitation estimates (SPE) are becoming valuable sources of rainfall data for hydrologic and climatic studies, especially where ground-based gauge measurements are sparse. They are, however, subject to considerable uncertainty due to their indirect measurement techniques. Effective merging of SPE and ground-based gauge measurements may help to improve precipitation estimation in terms of both resolution and accuracy. In a recent case study in Chile, a framework for merging satellite and gauge data was developed to produce high-quality precipitation estimates. The model that... Read More
  • New Strategic Plan Developed for G-WADI

    Sunday, October 15, 2017
    UNESCO has just published a new strategic plan for G-WADI, titled G-WADI: The Way Forward. The publication is available at . The lead author is Dr. Wouter Buytaert of Imperial College, London. This paper gives a condensed overview of the achievements of G-WADI including the developments of tools and platforms to assist water managers during hydrologic extremes, as well as capacity-building efforts undertaken to date. It also notes G-WADI’s strengths as a global network supporting the science-policy interface, and catalyzing high-level re... Read More
  • Arab G-WADI Network Meets to Discuss Priorities

    Friday, September 22, 2017
    The General Secretariat of the Arab Network for the Management of Water Resources in the Arid and Semi-Arid Regions of the Sultanate of Oman, in coordination and cooperation with the UNESCO Cairo Office, held the third general meeting of the Arab Network in Muscat, Sultanate of Oman from 17-19 September 2017. The meeting participants discussed the performance of the network since the last meeting, support for the Network, strengthening the links among the members, and cooperation and coordination with other international and regional networks. Network members also developed a list of prioritie... Read More
  • African Flood and Drought Monitor finds Applications in Health, Epidemiology and Migration studies

    Tuesday, August 15, 2017
    Developed by Princeton University’s Terrestrial Hydrology Group in collaboration with UNESCO IHP, G-WADI secretariats and members, regional centers, the African Flood and Drought Monitor (AFDM) monitors and forecasts meteorological, agricultural and hydrological drought at various temporal and spatial scales. It also has a multi-decadal, historical reconstruction of the terrestrial water cycle against which current conditions can be compared. Some of the applications of the AFDM were foreseen by its developers, but researchers and international development specialists are finding ways to use t... Read More
  • USACE Hydrologic Engineering Center and G-WADI Develop Methodology to Import Gridded Rainfall Data Globally into the Hydrologic Modeling System (HEC-HMS)

    Saturday, July 15, 2017
    Water-related software from the U.S. Army Corps of Engineers’ Hydrologic Engineering Center (HEC) is very popular internationally because it is high quality, is well documented, comes with training, is supported, and is freely downloadable. HEC’s hydrologic modeling system (HEC-HMS) is no exception. However, one limitation has been that it has not been possible to utilize the gridded precipitation option for areas outside of the United States due to limitations in how gridded data was stored in the model. This is no longer a limitation. HEC, in collaboration with the University of California,... Read More