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Engineers Week CEE Distinguished Seminar: Climate Variability and The Global Hydrologic Cycle: Efforts in Monitoring, Modeling, and Challenges in Forecast Changes


103 Churchill

February 22, 2018 3:00 pm
February 22, 2018 3:00 pm

Civil Engineering Distinguished Speaker Seminar:
Climate Variability and The Global Hydrologic Cycle: Efforts in Monitoring, Modeling, and Challenges in Forecast Changes

Soroosh Sorooshian, UC Irvine

The need for more efficient use and effective management of water resources is a critical global issue facing the 21st century. To be responsive to the requirements of water balance studies and development of more effective tools to address hydrologic hazards and manage water resources systems, scientists and engineers have become more reliant on the use of predictive models and stochastic methods. Depending on the problem, the hydrometeorological information needed may range from hourly forecasts (i.e., in the case of flash floods) to seasonal to inter-annual (i.e., in the case of reservoirs and other water resources system operations), and to decadal to century (i.e., in the case of long-range water supply planning and structural designs). Regional climate models are used with longer time scales, ranging from seasons to decades while information from Numerical Weather Prediction (NWP) models are often employed to help with shorter time scale forecasts (days to weeks).

Utility of such models for practical applications will depend on the success of testing and validation against historical observations. Therefore, availability of long and accurate observations is critical for this purpose. The availability of in-situ observational data of sufficient spatial and temporal resolutions, especially at the global scale, poses a major challenge. An alternative to ground-based observations is the use of Satellite remote sensing to estimate key hydrometeorological variables such as precipitation. This presentation introduces new data products based on the PERSIANN system developed at CHRS at UC Irvine. The recently released near real-time high-resolution (4km, 30 min.) dataset iRain and the 34 years+ (Daily, 25 km) precipitation Climate Data Record known as PERSIANN-CDR, which is becoming a widely used dataset, will be presented.

Sorooshian was born in a Zoroastrian family in Kerman, Iran. He did his primary education in Kerman before moving to United States in 1966. He got his bachelor of science in mechanical engineering from Cal Poly San Luis Obispo and MSc and PhD from UCLA in systems engineering. Sorooshian is a member of prestigious organizations such as the National Academy of Engineering and the International Academy of Astronautics. He is also a fellow of the AAAS, AGU, and the IWRA among others. Besides being a member and fellow he was also a chairman for the Global Energy and Water Cycle Experiment of the World Climate Research Programme. In 2009 he was appointed as the California Council on Science and Technology member. Among his recent honors are: Chinese Academy of Sciences (CAS) Einstein Professorship, 2014; AGU Robert E. Hor-ton Medalist, 2013; UCLA CEE Distinguished Alumnus of the Year Award 2013; Eagleson lectureship, Consortium of Universities for the Advancement of Hydrologic Science (CUAHSI), 2012.