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.
So, a cold, cloudy day with no snow indicates that there is either not enough water vapor available to the cloud, or that the rising motion creating the cloud is not enough to cause snow (or both). A heavy snowfall results from abundant water vapor combined with strong and persistent rising motion in the clouds. Snow can also form from very cold air flowing over a large ice-free lake, a situation called lake effect snow. In mountainous regions, air being forced to rise as it flows up and over the mountain can cause large snowfall accumulations.