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Diablo Wind
Diablo wind is a name that has been occasionally used for the hot, dry wind from the northeast that typically occurs in the San Francisco Bay Area of Northern California, during the spring and fall. The same wind pattern also affects other parts of California's coastal ranges and the western slopes of Sierra Nevada, with many media and government groups using the term Diablo winds for strong, dry downslope wind over northern and central California. Name The term first appeared shortly after the 1991 Oakland firestorm, perhaps to distinguish it from the comparable, and more familiar, hot dry wind in Southern California known as the Santa Ana winds. In fact, in decades previous to the 1991 fire, the term "Santa Ana" was occasionally used as well for the Bay Area dry northeasterly wind, such as the one that was associated with the 1923 Berkeley Fire. The name "Diablo wind" refers to the fact that the wind blows into the inner Bay Area from the direction of Mount Diablo in adjacent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diablo Wind
Diablo wind is a name that has been occasionally used for the hot, dry wind from the northeast that typically occurs in the San Francisco Bay Area of Northern California, during the spring and fall. The same wind pattern also affects other parts of California's coastal ranges and the western slopes of Sierra Nevada, with many media and government groups using the term Diablo winds for strong, dry downslope wind over northern and central California. Name The term first appeared shortly after the 1991 Oakland firestorm, perhaps to distinguish it from the comparable, and more familiar, hot dry wind in Southern California known as the Santa Ana winds. In fact, in decades previous to the 1991 fire, the term "Santa Ana" was occasionally used as well for the Bay Area dry northeasterly wind, such as the one that was associated with the 1923 Berkeley Fire. The name "Diablo wind" refers to the fact that the wind blows into the inner Bay Area from the direction of Mount Diablo in adjacent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundowner Winds
A sundowner is a northerly offshore wind in California along the southern Pacific slope of Santa Ynez Mountains, in communities along the Gaviota Coast and Santa Barbara towards but not including Ventura County. Formation It occurs when a region of high pressure is directly north of the area, the coast of which trends east–west. This contrasts with the more typical onshore flow. The winds blow with greatest force when the pressure gradient is perpendicular to the axis of the Santa Ynez Mountains, which rise directly behind Santa Barbara. These winds often precede Santa Ana events by a day or two, but also as tail end of Santa Anas after they weaken, it is normal for high-pressure areas to migrate east, causing the pressure gradients to shift to the northeast. Aptly named sundowners are typically nighttime events that terminate after sunrise, they may repeat for days, while Santa Anas are multi-day long events. Weaker sundowner effects may occur without an associated Santa Ana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winds
Wind is the natural movement of air or other gases relative to a planet's surface. Winds occur on a range of scales, from thunderstorm flows lasting tens of minutes, to local breezes generated by heating of land surfaces and lasting a few hours, to global winds resulting from the difference in absorption of solar energy between the climate zones on Earth. The two main causes of large-scale atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect). Within the tropics and subtropics, thermal low circulations over terrain and high plateaus can drive monsoon circulations. In coastal areas the sea breeze/land breeze cycle can define local winds; in areas that have variable terrain, mountain and valley breezes can prevail. Winds are commonly classified by their spatial scale, their speed and direction, the forces that cause them, the regions in which they occur, and their effect. Winds have various asp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Relative Humidity
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity depends on the temperature and pressure of the system of interest. The same amount of water vapor results in higher relative humidity in cool air than warm air. A related parameter is the dew point. The amount of water vapor needed to achieve saturation increases as the temperature increases. As the temperature of a parcel of air decreases it will eventually reach the saturation point without adding or losing water mass. The amount of water vapor contained within a parcel of air can vary significantly. For example, a parcel of air near saturation may contain 28 g of water per cubic metre of air at , but only 8 g of water per cubic metre of air at . Three primary measurements of humidity are widely employed: absolute, relative, and specific. Ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Low
Thermal lows, or heat lows, are non-frontal low-pressure areas that occur over the continents in the subtropics during the warm season, as the result of intense heating when compared to their surrounding environments.Glossary of Meteorology (2009)Thermal Low. American Meteorological Society. Retrieved on 2009-03-02. Thermal lows occur near the Sonoran Desert, on the Mexican plateau, in California's Great Central Valley, in the Sahara, over north-west Argentina in South America, over the Kimberley region of north-west Australia, over the Iberian peninsula, and over the Tibetan plateau. On land, intense, rapid solar heating of the earth's surface causes the heating of the lowest layers of the atmosphere, via re-radiated energy in the infrared spectrum. The hotter air is less dense than surrounding cooler air and rises, leading to the formation of a low pressure area. Elevated areas can enhance the strength of the thermal low because they warm more quickly than the atmosphere wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dine's Compensation
Dines' compensation, or Dines compensation principle, is a rule of thumb devised by English meteorologist William Henry Dines which states that ''winds converging on a given column of air at one altitude tends to be balanced by winds diverging at another altitude'', and vice versa. As an example, the air under a thunderstorm rushes in at ground level, rises up through the cumulonimbus cloud, and then disperses at the top of the cloud so there is a balancing of converging and diverging air flows and no net increase in air molecules above a given location. Dines compensation is a demonstration of conservation of mass under the weak constraint that the height of the atmosphere is approximately the same anywhere on Earth. Mathematically it may be stated that the sign of the horizontal divergence changes at least once in any given column of air. A corollary is that rising air at any given point in the atmosphere tends to be balanced by sinking or subsiding air elsewhere. This is a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Jump
A hydraulic jump is a phenomenon in the science of hydraulics which is frequently observed in open channel flow such as rivers and spillways. When liquid at high velocity discharges into a zone of lower velocity, a rather abrupt rise occurs in the liquid surface. The rapidly flowing liquid is abruptly slowed and increases in height, converting some of the flow's initial kinetic energy into an increase in potential energy, with some energy irreversibly lost through turbulence to heat. In an open channel flow, this manifests as the fast flow rapidly slowing and piling up on top of itself similar to how a shockwave forms. It was first observed and documented by Leonardo da Vinci in the 1500s. The mathematics were first described by Giorgio Bidone of Turin University when he published a paper in 1820 called ''Experiences sur le remou et sur la propagation des ondes''. The phenomenon is dependent upon the initial fluid speed. If the initial speed of the fluid is below the critical s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundowner Wind
A sundowner is a northerly offshore wind in California along the southern Pacific slope of Santa Ynez Mountains, in communities along the Gaviota Coast and Santa Barbara towards but not including Ventura County. Formation It occurs when a region of high pressure is directly north of the area, the coast of which trends east–west. This contrasts with the more typical onshore flow. The winds blow with greatest force when the pressure gradient is perpendicular to the axis of the Santa Ynez Mountains, which rise directly behind Santa Barbara. These winds often precede Santa Ana events by a day or two, but also as tail end of Santa Anas after they weaken, it is normal for high-pressure areas to migrate east, causing the pressure gradients to shift to the northeast. Aptly named sundowners are typically nighttime events that terminate after sunrise, they may repeat for days, while Santa Anas are multi-day long events. Weaker sundowner effects may occur without an associated Santa Ana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norte (wind)
The Norte is a strong cold wind which blows from the northeast in Mexico along the Gulf of Mexico. It primarily affects the states along the Coast, including: Tamaulipas, Veracruz, Tabasco, Campeche, and Yucatán. Unlike El Nino EL, El or el may refer to: Religion * El (deity), a Semitic word for "God" People * EL (rapper) (born 1983), stage name of Elorm Adablah, a Ghanaian rapper and sound engineer * El DeBarge, music artist * El Franco Lee (1949–2016), American po ..., it's a localized wind and not part of a broader climate pattern. References See also * List of local winds Winds {{Mexico-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foehn Wind
A Foehn or Föhn (, , ), is a type of dry, relatively warm, downslope wind that occurs in the lee (downwind side) of a mountain range. It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped most of its moisture on windward slopes (see orographic lift). As a consequence of the different adiabatic lapse rates of moist and dry air, the air on the leeward slopes becomes warmer than equivalent elevations on the windward slopes. Foehn winds can raise temperatures by as much as 14 °C (25 °F) in just a matter of hours. Switzerland, southern Germany and Austria have a warmer climate due to the Foehn, as moist winds off the Mediterranean Sea blow over the Alps. Etymology The name ''Foehn'' (german: Föhn, ) arose in the Alpine region. Originating from Latin ''(ventus) favonius'', a mild west wind of which Favonius was the Roman personification and probably transmitted by rm, favuogn or just ''fuogn'', the term was adopted as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventura County
Ventura County () is a county in the southern part of the U.S. state of California. As of the 2020 census, the population was 843,843. The largest city is Oxnard, and the county seat is the city of Ventura. Ventura County comprises the Oxnard–Thousand Oaks–Ventura, CA Metropolitan Statistical Area, which is part of the Greater Los Angeles area (Los Angeles-Long Beach, CA Combined Statistical Area). It is also considered the southernmost county along the California Central Coast. Two of the Channel Islands are part of the county: Anacapa Island, which is the most visited island in Channel Islands National Park, and San Nicolas Island. History Pre-colonial period Ventura County was historically inhabited by the Chumash people, who also settled much of Santa Barbara and San Luis Obispo Counties, with their presence dating back 10,000–12,000 years. The Chumash were hunter-gatherers, fishermen, and also traders with the Mojave, Yokuts, and Tongva Indians. The Chumash are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Incidence
Solar irradiance is the power per unit area (surface power density) received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument. Solar irradiance is measured in watts per square metre (W/m2) in SI units. Solar irradiance is often integrated over a given time period in order to report the radiant energy emitted into the surrounding environment (joule per square metre, J/m2) during that time period. This integrated solar irradiance is called solar irradiation, solar exposure, solar insolation, or insolation. Irradiance may be measured in space or at the Earth's surface after atmospheric absorption and scattering. Irradiance in space is a function of distance from the Sun, the solar cycle, and cross-cycle changes.Michael Boxwell, ''Solar Electricity Handbook: A Simple, Practical Guide to Solar Energy'' (2012), p. 41–42. Irradiance on the Earth's surface additionally depends on the tilt of the measuring surface, the height ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
