Horizon Haze

Horizon

Most commonly, the horizon is the border between the surface of a celestial body and its sky when viewed from the perspective of an observer on or above the surface of the celestial body. This concept is further refined as:

Haze

Haze is traditionally an atmospheric phenomenon in which dust, smoke, and other dry particulates suspended in air obscure visibility and the clarity of the sky. The World Meteorological Organization manual of codes includes a classification of particulates causing horizontal obscuration into categories of fog, ice fog, steam fog, mist, haze, smoke, volcanic ash, dust, sand, and snow. Sources for particles that cause haze include farming, traffic, industry, windy weather, volcanic activity and wildfires. Seen from afar and depending on the direction of view with respect to the Sun, haze may appear brownish or bluish, while mist tends to be bluish grey instead. Whereas haze often is considered a phenomenon occurring in dry air, mist formation is a phenomenon in saturated, humid air. However, haze particles may act as condensation nuclei that leads to the subsequent vapor condensation and formation of mist droplets; such forms of haze are known as "wet haze".

horizon

Noun

1. The visible horizontal line (in all directions) where the sky appears to meet the earth in the distance.
2. The range or limit of one's knowledge, experience or interest; a boundary or threshold.

haze

Noun

1. Very fine solid particles (smoke, dust) or liquid droplets (moisture) suspended in the air, slightly limiting visibility.
2. A reduction of transparency of a clear gas or liquid.

Verb

1. To be or become hazy, or thick with haze.