A warm, tropical air mass comes in contact with a cold, polar air mass. Because the air in the warm front is well, warm then it rises over the cold front. The air is cooled and condenses to form stratus cloud.
When the stratus cloud becomes saturated, it begins to precipitate. This causes the air to warm and become very hot. The air rises upwards. The air is then cooled and condenses to form cumulus cloud. Two experimental campaigns were organized to compare three field rainfall simulators of similar scale plot size , but with different technical parameters.
The results were then compared, to identify parameters that are crucial for soil loss and surface runoff formation and test if results from individual devices can be reliably compared. The intensity of rainfall is regulated electronically, which leaves the nozzle opened only for certain time.
Usual working pressure is 0. Elevation of nozzles is 2. Intensity is regulated by the frequency of sweeps above the experimental plot. Comparison was done during two independent campaigns, where always two devices were present. In general, the experiments revealed a significant effect of potential heterogeneities at the experimental plots and an effect of raindrop energy on both surface runoff formation and mainly soil loss.
Therefore, coordination of methodology of the experiments and careful control of initial conditions seem to be a crucial point for compara- bility of results from individual devices. Detailed results will be presented on the poster. After the winds cross the mountains they are dry so instead of bringing rain they absorb moisture leaving the leeward side of the mountain dry.
When the earth is overheated the air directly above it becomes warmed. The warm rising air is laden with water vapour which makes the air very moist. This warming causes air to expand and rise. The air cools as it rises, forming masses of clouds which become heavy. As it rises the air remains warmer than the air around it and will condense to form towering clouds with flattened tops.
These heavy clouds shed some of their moisture as rain. These rain showers fall in the early afternoon and may last for one hour or more. By late afternoon the rain stops and the skies become clear. The winds can be quite strong and are called northers. These winds are cold and dry.
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