The overarching objective of integrated hydrologic ground validation activities supporting the Global Precipitation Measurement (GPM) mission is to provide better understanding of the strengths and limitations of the satellite products, in the context of hydrologic applications. To this end, the GPM Ground Validation (GV) program conducted one of several hydrology-oriented field efforts: the Integrated Precipitation and Hydrology Experiment (IPHEx).
IPHEx was conducted in North Carolina during the months of April-June, 2014. IPHEx sought to characterize warm season orographic precipitation regimes, and the relationship between precipitation regimes and hydrologic processes in regions of complex terrain. IPHEx includes two major activities:
- The development, evaluation and improvement of remote-sensing precipitation algorithms in support of the GPM mission through NASA GPM GV field campaign: IPHEX-GVFC.
- The evaluation of Quantitative Precipitation Estimation (QPE) products for hydrologic forecasting and water resource applications in the Upper Tennessee, Catawba-Santee, Yadkin-Pee Dee and Savannah river basins: IPHEX-HAP (H4SE). NOAA Hydrometeorology Testbed (HMT) has synergy with this project.