Project CI-FLOW banner

CI-FLOW leverages NSSL's technical and scientific capabilities towards enhancing models that will improve responses to flooding events.

NOAA wants to improve responses to flooding events through the work of CI-FLOW, the Coastal and Inland FLooding Observation and Warning Project, focused on the Tar-Pamlico River Basin in North Carolina. CI-FLOW is a research and demonstration program for the evaluation and testing of new technologies and techniques to produce accurate and timely identification of inland and coastal floods and flash floods. Partners in the project include NSSL, North Carolina State University (NCSU), North Carolina Sea Grant Extension and the National Weather Service.

NSSL's technical and scientific capabilities will be leveraged in CI-FLOW towards enhancing models that will improve responses to flooding events. NSSL's NMQ/Q2 system will be tested as part of the project. The NMQ/Q2 is a prototype real-time computing system that generates three-dimensional mosaics of radar reflectivity and a suite of derived products including multiple rainfall products. The system has also been designed to ingest all relevant grids for rainfall estimation such as multiple radar, rain gauges, satellite imagery, model output, and lightning flashes. The reflectivity mosaics and derived products are interpolated to a 1-km CONUS grid mesh on 31 vertical layers and are updated every 5 minutes.

Within NOAA, there are currently two other primary research activities focused on the production of near-real-time high resolution multi-sensor QPE. The Office of Hydrologic Development's Multisensor Precipitation Estimator (MPE) and NESDIS's Hydro-Estimator (HE). CI-FLOW will develop and identify the optimum set of techniques and algorithms from all three research activities to serve as a state-of-thescience NOAA multi-sensor QPE.

A flooded street in China

Flooding in China (above) and Taiwan (below).

Flood waters churn under a bridge in Taiwan

International collaborations:

HMRG-IHR (China) scientific exchange program

Beginning in 2004, NSSL's HydroMet Research Group in collaboration with the Institute of Heavy Rain of the China Meteorological Administration established a scientific exchange program focusing on radar applications in quantitative precipitation estimation and forecast (QPE/F) towards improving the accuracy of flood and flash flood warnings. The ongoing program includes the exchange of visiting scientists, joint scientific workshops, and academic lectures. Through this exchange, scientists from both the USA and China gain a better understanding of continuing efforts in the two countries to address the scientific and operational challenges of flood warnings and water resource management. The collaboration also facilitates scientific contributions in the development and refinement of the National Mosaic and QPE system.

NSSL-Central Weather Bureau (Taiwan) High-Resolution QPE and QPF (HRQ2) system

NOAA's NSSL and Earth System Research Laboratory (ESRL) collaborated with the Central Weather Bureau (CWB) and Water Resources Agency (WRA) of Taiwan to develop a High-Resolution QPE and QPF (HRQ2) system for Taiwan. The four-year collaboration began in 2002 to help improve Taiwan's capabilities to issue flash flood and flood warnings and to improve river and reservoir water management. The HRQ2 system has been running in real-time at the CWB and at more than ten other government agencies in support of their severe weather and flood/flash flood warnings, water resource management, soil conservation and other weather-related decisions. In 2006, NSSL and ESRL started a new 4-year plan with the CWB and WRA of Taiwan to continue the development and enhancements of the HRQ2 system.