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.
For clouds, that cooling is almost always the result of rising of air, which cools from expansion. But for fog, which occurs next to the ground, there are usually other reasons for this cooling. For instance, rain can cool and moisten the air near the surface until fog forms. Or, as is more often the case, infrared cooling of a cloud-free, humid air mass at night can lead to fog formation-this is called radiation fog.