Handheld PC.

Head Performance Criteria

High pressure compressor (jet engine)

Abbreviation for Hydrological Processes and Climate, an EOS project to provide a description and a better understanding of the physical processes that contribute to the maintenance and variability of the global hydrologic and energy cycles. The three main objectives involve understanding the physical mechanisms of atmospheric hydrologicl processes and their interaction with the dynamics and radiative properties of the atmosphere, the role of hydrologic processes in large-scale ocean/atmosphere/land interaction leading to natural fluctuations of the global climate system over a variety of time scales, and the role of land surface processes in the global hydrologic cycle. See the HPC Web site.

VSAT RF equipment that upconverts and amplifies transmit signals.

cf. Health Professional Card

HAL Productivity Council

Health Professions Council

Hydrometeorological Prediction Center

Heterotrophic Plate Count