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Targeted Data
The programs associated with targeted observations for track prediction include the Predictability and Observation Experiment
(PROBEX), funded in South Korea, the Typhoon Hunter 08 (TH08) funded in Japan, and Dropsonde Observations for Typhoon
Surveillance near the Taiwan Region DOTSTAR, funded in Taiwan. Although not
reflected on the display of the western North Pacific and eastern Asian regions, a primary contribution to the targeting
observation component of T-PARC comes from the Deutsches Zentrum Fur Luft- und Raumfahrt (DLR) in Germany with additional
German sponsorship from the University of Karlsruhe / Forschungszentrum in Karlsruhe (FZK). The DLR Falcon aircraft with
Doppler wind lidar and Differential absorption water vapor lidar will be one of the primary observing platforms for targeted
observations.
The primary objectives associated with targeted observations address the uncertainty that often occurs with respect to
typhoon track prediction. As defined in the graphic below, members of a numerical ensemble prediction scheme often
exhibit large spread in forecast track scenario. Even after the track shape has become rather specific, the timing
and details associated with the point of recurvature or the location of extratropical transition remains uncertain.
During T-PARC approximately targeting products from approximately 7 weather centers will be utilized to plan and
implement aircraft operations for the purpose of obtaining in situ measurements in sensitive regions. Targeted
observations will primarily be obtained by the DOTSTAR program and by the DLR Falcon. Specific objectives for the
targeting portion of TPARC include:
- Assessing agreements and differences among targeting products;
- Examining the evolution of sensitive regions with respect to:
- Tropical cyclone life cycle;
- Tropical cyclone location;
- Varying midlatitude flow patterns;
- Assessing the impacts of targeted observations;
- Obtained from aircraft;
- Obtained from satellite;
- Assessing the relative impacts of varying observation types (i.e., dropwindsondes, lidar, flight-level, etc.).
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