PFE METRIC 4: PFAC or. Representative on Hospital. Committee. The intent of this metric is that a hospital has a formal. relationship with patient and family advisors from the local. community who provide input and guidance from the patient. perspective on hospital operations, policies, procedures, and. quality improvement efforts.
Haze is traditionally an atmospheric phenomenon where dust, smoke and other dry particles obscure the clarity of the sky. The World Meteorological Organization manual of codes includes a classification of horizontal obscuration into categories of fog, ice fog, steam fog, mist, haze, smoke, volcanic ash, dust, sand and snow. Sources for haze particles include farming (ploughing in dry weather), traffic, industry, and wildfires.
The two main types of fog. Most common over land is Radiation Fog which occurs on clear nights with light winds. Radiation from the ground escapes out to space, the ground cools and, in turn, cools the air in contact with it. On an absolutely still night, condensation will occur on the ground to form dew. With slight air movement, sufficient condensation forms on condensation nuclei to form very small droplets of water - mist or fog. If the wind increases or a layer of cloud comes over, then the fog is likely to clear.