Haze

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.

Seen from afar (e.g. approaching airplane) and depending upon the direction of view with respect to the sun, haze may appear brownish or bluish, while mist tends to be bluish-grey. Whereas haze often is thought of as a phenomenon of dry air, mist formation is a phenomenon of humid air. However, haze particles may act as condensation nuclei for the subsequent formation of mist droplets; such forms of haze are known as "wet haze."

In the United States and elsewhere, the term "haze" in meteorological literature generally is used to denote visibility-reducing aerosols of the wet type. Such aerosols commonly arise from complex chemical reactions that occur as sulfur dioxide gases emitted during combustion are converted into small droplets of sulfuric acid. The reactions are enhanced in the presence of sunlight, high relative humidity, and stagnant air flow. A small component of wet haze aerosols appear to be derived from compounds released by trees, such as terpenes. For all these reasons, wet haze tends to be primarily a warm-season phenomenon. Large areas of haze covering many thousands of kilometers may be produced under favorable conditions each summer.

Read more about Haze:  Air Pollution, Obscuration

Other articles related to "haze":

Molotov And Haze - Vinyl Edition
... In April 2009, Molotov and Haze was released in a double LP Vinyl edition by Tonefloat Records with extended versions of Molotov 1502 and Haze 1402 ... to 500 copies on 180 grams black vinyl in gatefold picture sleeve, and contained a 10" LP of Haze Shrapnel as a bonus disc ...
Summer Haze
... Summer Haze (born 9 July 1972, in Philadelphia, United States) is a pornographic actress, director of pornographic films, businesswoman, and professional wrestler, Haze was once married to adult film director ... Haze and Valentine divorced in 2007 after six years of marriage ... She also owns the adult toy manufacturer, The Haze XXXperience ...
Haze - Obscuration
... Haze causes issues in the area of terrestrial photography, where the penetration of large amounts of dense atmosphere may be necessary to image distant subjects ... to the effect of light scattering through the haze particles ... In some cases, attenuation by haze is so great that, toward sunset, the sun disappears altogether before reaching the horizon ...
1997 Indonesian Forest Fires
... neighbouring countries, spreading thick clouds of smoke and haze to Malaysia and Singapore ... firefighters across to Indonesia under code name Operation Haze ... This is to mitigate the effect of the Haze to Malaysia economy ...
Theatrical Smoke And Fog - Types of Effects - Haze
... Haze effects refer to creating an unobtrusive, homogeneous cloud intended primarily to reveal lighting beams, such as the classic "light fingers" in a rock concert ... This effect is produced using a haze machine, typically done in one of two ways ... Another technique for creating haze uses a glycol/water mixture to create haze in a process nearly identical to that for creating fog effects ...

Famous quotes containing the word haze:

    But before the extremity of the Cape had completely sunk, it appeared like a filmy sliver of land lying flat on the ocean, and later still a mere reflection of a sand-bar on the haze above. Its name suggests a homely truth, but it would be more poetic if it described the impression which it makes on the beholder.
    Henry David Thoreau (1817–1862)

    Here is what sometimes happened to me: after spending the first part of the night at my desk—that part when night trudges heavily uphill—I would emerge from the trance of my task at the exact moment when night had reached the summit and was teetering on that crest, ready to roll down into the haze of dawn....
    Vladimir Nabokov (1899–1977)

    By night we lingered on the lawn,
    For underfoot the herb was dry;
    And genial warmth; and o’er the sky
    The silvery haze of summer drawn;
    Alfred Tennyson (1809–1892)