PEHRPP Applications Working Group Summary, Recommendations, and Future Directions Chairs: Val Anatharaj and Matt Sapiano Bob Adler, Phil Arkin, Ralph Ferraro, Matt Garcia, Kosta Georgakakos, Prasatha Hapuarachchi, Christa Peters-Lidard, Joe Turk PHERPP Applications Working Group (5 Dec 2007)

PHERPP Applications Working Group (5 Dec 2007) Topics of discussion Types of applications, classes of users Uncertainty estimates and ancillary data Data availability, continuity, and succession Mathematical and technical frameworks for adding value to products – blending, merging, downscaling PHERPP Applications Working Group (5 Dec 2007)

PHERPP Applications Working Group (5 Dec 2007) Types of applications Hydrology (ex. flood forecasting) Global hazards NWP modelers (for validation and assimilation) Operational forecasters Short-term climate (extremes and variability) Agriculture and food security Water resources and quality Public health Economists Transportation and military operations Others PHERPP Applications Working Group (5 Dec 2007)

PHERPP Applications Working Group (5 Dec 2007) Recommendations (1) 1. Product developers should be encouraged to formulate and produce error estimates for the products 1a. By engaging end users, IPWG should investigate the forms of error required for applications. 1b. Since full error estimates will take time to obtain, developers should be encouraged to make other information available such as the main source of data (i.e. SSM/I F13 GPROF V6) and the latency of MW data (time since last MW overpass). PHERPP Applications Working Group (5 Dec 2007)

PHERPP Applications Working Group (5 Dec 2007) Recommendation (2) 2. PEHRPP/IPWG should make satellite organizations aware of the fact that MW data are useful for a broad range of applications and that these applications would benefit from more data, faster data delivery and the maintenance of all existing data-streams. 3. Product developers should be encouraged to pursue other assimilation and/or downscaling methodologies which exploit all available information (satellites, NWP, gauges, lightning estimates), particularly those which are optimized for specific applications 3a. PEHRPP/IPWG should facilitate communication between Algorithm developers (including base product providers) and the end users. PHERPP Applications Working Group (5 Dec 2007)

Future directions for PEHRPP More work is needed to understand the characteristics and errors of the HRPPs at sub-daily timescales and at very high resolution. A study of the impact of the HRPPs at the application level is required to highlight the utility of these data to policy-makers. PEHRPP/IPWG should implement a data distribution/imaging interface (such as the Giovanni interface) for end users PEHRPP needs to advertise the existence of the HRPPs to end users, including non-traditional users. PHERPP Applications Working Group (5 Dec 2007)