timberland boots Visible fire observation _418

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Visible fire observation

When the weather. General Ren amount of smoke from small fires are very light, if the forest as the background, the direction of the observer facing the sun more difficult to identify, on the contrary easy to distinguish. After the forest fire to see not only fuel the smoke after the smoke carbon particles, also contains a large amount of water vapor. In addition to attempting over the fire caused by convective clouds sometimes, the water vapor generally dissipate quickly. Suspended smoke particles in the atmosphere, mostly in small diameter 0.0l-l microns,[link widoczny dla zalogowanych], the minimum can be seen millionth microns. Static stability in the atmosphere, such as l-micron-sized particles, settling velocity is only tens of centimeters per hour, so calm wind and breeze weather, smoke can exist a long time. Puff Jumping height depends on the intensity of the fire size and burning, and high-altitude wind. Convection column of smoke caused by forest fires can reach the height of cumulus clouds, in the gentle mountains could be seen outside Barry. In addition,[link widoczny dla zalogowanych], the rise since the beginning of a small fire smoke plume, but also by the impact of atmospheric stability, when the atmosphere is not conducive to steady increase in smoking, especially in high pressure under the control of fine weather, smoke sooner or later will be low, with the sun high, near-surface temperature increases, the situation subsequently changed. Thus, according to the level and dispersion of smoke to estimate the fire location, observation time and the weather was heavy. Fort pad fall due c * + n # 7gZ'2. - To influence. Forest fire, especially in secondary forest and grassland fire pond ditch, the composition of the smoke, not just the tiny smoke particles, as well as attempting heat flow to a certain height and the whereabouts of a large number of drifting ash Di (film). Therefore,[link widoczny dla zalogowanych], the ability to see the Ashes (film), often under fire in recent inferred. Consider the case of a moderate, if the gray scale to the film attempting with snow above 120 meters, and its falling speed 6O meters per minute, if the weather five to estimate the wind, it can be before attempting (the wind direction) 1. 2 km observed. However, due to changing weather, fire conditions, it is difficult and quantitative estimation. Use of visible light on the concept of smoke deep, need to know is that smoke can absorb moisture in the atmosphere, fog,[link widoczny dla zalogowanych], rain in the weather it is to become heavy and can be cleaned quickly settlement. Longer be a forest fire, the smoke particle size can actually interfere with most of the composition of sunlight, only the red spectrum exceptions, the sun through the red. Visibility on the smoke, then depending on its concentration and particle size. Translated More articles related to topics：

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