1. 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)

2. 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)

3. 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)

4. 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)

5. 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)

6. 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)