HRD Flight Requirements for 2005

Operational needs – tasked by NHC Reconnaissance/Surface Winds Research opportunities – tasked by HRD/NESDIS IFEX: Mature storm/Genesis/ Wind Fields at Landfall Ocean Winds (equal priority to above) RAINEX (equal priority to above) HRD Flight Requirements - P-3s (in order of priority)

Operational needs – tasked by NHC Synoptic Surveillance Core Penetration Tests Research opportunities – tasked by HRD IFEX: Saharan Air Layer RAINEX IFEX: Synoptic Environment of Mature Storm IFEX: Synoptic Environment of Tropical Cyclogenesis (interaction with NASA TCSP in East Pacific) HRD Flight Requirements - G-IV (in order of priority)

Flight Pattern Criteria – P-3s Operational Figure-4 pattern Leg lengths extended for surface wind mapping Research 225 research flight hours for HRD Patterns dependent on module Flight patterns will be available in Hurricane Field Program Plan

Operational Targets defined as maximum forecasted DLM wind field variance at obs time from GFS All drops must be over open water and are generally dropped at a resolution of 222 km Flight tracks are limited to 8.5 h when plane recovers in continental US, 8 h at St. Croix and Barbados, 7.5 h in Bermuda Missions commence at 1730 and 0530 UTC Generally do not have clearance to overfly Cuba, Hispaniola, or Central America Research 45 research flight hours for HRD Patterns dependent on module Flight patterns will be available in Hurricane Field Program Plan Flight Pattern Criteria – G-IV