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Cold drop (Spanish: gota fría; archaic as a meteorological term), colloquially, any high impact rainfall event along the Mediterranean coast of Spain; Drought, a prolonged water supply shortage, often caused by persistent lack of, or much reduced, rainfall; Floods. Flash flood; Rainstorm; Red rain in Kerala (for related phenomena, see Blood ...
Atmospheric instability is a condition where the Earth's atmosphere is considered to be unstable and as a result local weather is highly variable through distance and time. [ clarification needed ] [ 1 ] Atmospheric instability encourages vertical motion, which is directly correlated to different types of weather systems and their severity.
The region near the surface in the Sahara undergoes strong warming through heat transfer from the underlying layer. This extreme diurnal warming creates instability in the lowest layer of the atmosphere, warming and drying the air near the surface and cooling while humidifying the air near the top of the layer through convective mixing. [3]
The Conversation, Explainer: how ‘Spanish plume’ set off a heatwave in the UK; UK Weather Forecast: What is a ‘Spanish plume’ Netweather Blog: The Spanish Plume Arrives & An Increasing Risk of Thunderstorms; SkyWarn UK, Forecasting a Spanish Plume (June 2014) FMI Convective cloud features in typical synoptic environments: the Spanish plume
Several bodies have been found after parts of southern and eastern Spain were hit by severe flash flooding on Tuesday, with some locations receiving up to 12 inches of rain in just a few hours.
Instability results from difference between the adiabatic lapse rate of an air mass and the ambient lapse rate in the atmosphere. [2] If the adiabatic lapse rate is lower than the ambient lapse rate, an air mass displaced upward cools less rapidly than the air in which it is moving. Hence, such an air mass becomes warmer relative to the ...
Atmospheric instability; Atmospheric stratification, the dividing of the upper reaches of the Earth's atmosphere into stably-stratified layers; Atmospheric circulation, caused by the unstable stratification of the atmosphere; Thermohaline circulation, circulation in the oceans despite stable stratification.
Some atmospheric conditions, such as very warm, moist, air in an atmosphere that cools rapidly with height, can promote strong and sustained upward air movement, possibly stimulating the formation of cumulus clouds or cumulonimbus (thunderstorm clouds). In that situation the potential energy of the atmosphere to cause upward air movement is ...