Thermodynamics - Atmosphere Physics
... Below approximately 100 km altitude, air is relatively well mixed. Virtually all mixing is accomplished by the exchange of air “parcels” which have horizontal dimensions ranging from mm to the scale of the Earth. An air “parcel” of infinitesimal dimensions is assumed to be: ...
... Below approximately 100 km altitude, air is relatively well mixed. Virtually all mixing is accomplished by the exchange of air “parcels” which have horizontal dimensions ranging from mm to the scale of the Earth. An air “parcel” of infinitesimal dimensions is assumed to be: ...
Weather Forecasting for Cross Country Soaring
... Light winds of 15kt or less, minimal shear or gradients Adequate moisture for fair weather Cu – but not so much to cause too much rain, overdevelopment, or storms Consistent conditions starting in late morning and lasting until sunset ...
... Light winds of 15kt or less, minimal shear or gradients Adequate moisture for fair weather Cu – but not so much to cause too much rain, overdevelopment, or storms Consistent conditions starting in late morning and lasting until sunset ...
Lowering the sink temperature for a desert solar air
... the cover bottom and sink surface. The air gap provides cheap and excellent insulation properties to reduce heat conduction from cover to ground. Since gap height is small, and the hotter surface is the top one, convective effects (all natural) are negligible. After sunset and until next day sunrise ...
... the cover bottom and sink surface. The air gap provides cheap and excellent insulation properties to reduce heat conduction from cover to ground. Since gap height is small, and the hotter surface is the top one, convective effects (all natural) are negligible. After sunset and until next day sunrise ...
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AIR CONDITIONING
... Warm air holds moisture. For example, your body produces perspiration when heated. If it is warm, and the humidity is high, the hot, humid air cannot absorb any excess moisture, and perspiration remains on the skin. If it is cooler, and the humidity is low, the air can absorb moisture from the skin ...
... Warm air holds moisture. For example, your body produces perspiration when heated. If it is warm, and the humidity is high, the hot, humid air cannot absorb any excess moisture, and perspiration remains on the skin. If it is cooler, and the humidity is low, the air can absorb moisture from the skin ...
The role of air temperature on the skin temperature of the sea
... evenings decrease from the peak temperature few hours after sunset and after the bulk temperature has decreased (Figs. 2b and 2e). The warm air that does allow the evening chilling a few hours after sunset derives from the Mediterranean breeze (Fig. 2e), that adiabatically heats while descending fro ...
... evenings decrease from the peak temperature few hours after sunset and after the bulk temperature has decreased (Figs. 2b and 2e). The warm air that does allow the evening chilling a few hours after sunset derives from the Mediterranean breeze (Fig. 2e), that adiabatically heats while descending fro ...
Take flight - Met Office
... ‘We reached the height of two miles at twenty-two minutes past the hour, where the sky was dark blue, and from whence the earth was visible in occasional patches beneath the clouds. The temperature had by this stage fallen to freezing-point. By discharging sand in ten minutes we attained the altitud ...
... ‘We reached the height of two miles at twenty-two minutes past the hour, where the sky was dark blue, and from whence the earth was visible in occasional patches beneath the clouds. The temperature had by this stage fallen to freezing-point. By discharging sand in ten minutes we attained the altitud ...
Severe cold school closing information
... Schools will be closed under the condition of a wind chill warning. A wind chill warning indicates that lifethreatening conditions and a risk to safety exists. Measures should be taken to safeguard life and property immediately. A wind chill warning is typically issued when the wind chill will be –3 ...
... Schools will be closed under the condition of a wind chill warning. A wind chill warning indicates that lifethreatening conditions and a risk to safety exists. Measures should be taken to safeguard life and property immediately. A wind chill warning is typically issued when the wind chill will be –3 ...
creating your own weather station
... 1. Cut a square 3 inches (7.5 cm) on each side from the cardboard. Then cut out a triangle with 2-inch (5 cm) sides. The actual measurements aren’t too important, but the square must be larger than the triangle. 2. Place one end of the straw onto the square. The end of the straw should be at about ...
... 1. Cut a square 3 inches (7.5 cm) on each side from the cardboard. Then cut out a triangle with 2-inch (5 cm) sides. The actual measurements aren’t too important, but the square must be larger than the triangle. 2. Place one end of the straw onto the square. The end of the straw should be at about ...
Heat, Wind and Pressure
... extremely hot, while the dark side of the planet would be bitterly cold. 6. Around low pressure we commonly find weather that is unsettled. There is more wind, more cloud cover, and a greater chance of precipitation and storms. 7. In the winter, a strong wind carries heat away from you that your bod ...
... extremely hot, while the dark side of the planet would be bitterly cold. 6. Around low pressure we commonly find weather that is unsettled. There is more wind, more cloud cover, and a greater chance of precipitation and storms. 7. In the winter, a strong wind carries heat away from you that your bod ...
Measuring the Heat Absorption and Retention Properties of a Solar
... to design a functioning solar autoclave. The current autoclave design features a solar powered oven manufactured by the Mujeres Solares, comprised of a well-insulated box with a double paneled glass lid and an adjustable reflector panel. Inside this solar oven is a six quart Presto Pressure Cooker, ...
... to design a functioning solar autoclave. The current autoclave design features a solar powered oven manufactured by the Mujeres Solares, comprised of a well-insulated box with a double paneled glass lid and an adjustable reflector panel. Inside this solar oven is a six quart Presto Pressure Cooker, ...
experimental evaluation of heat exchange between water surface
... essential parameter of the range of temperature variation with time. For example, in case of wind velocity of 2 m/s and water depths of 5 m the half-life-period amounts to 8 days. Normally constant meteorological conditions can not be expected throughout such long periods. Furthermore an applicable ...
... essential parameter of the range of temperature variation with time. For example, in case of wind velocity of 2 m/s and water depths of 5 m the half-life-period amounts to 8 days. Normally constant meteorological conditions can not be expected throughout such long periods. Furthermore an applicable ...
Atmospheric convection
Atmospheric convection is the result of a parcel-environment instability, or temperature difference, layer in the atmosphere. Different lapse rates within dry and moist air lead to instability. Mixing of air during the day which expands the height of the planetary boundary layer leads to increased winds, cumulus cloud development, and decreased surface dew points. Moist convection leads to thunderstorm development, which is often responsible for severe weather throughout the world. Special threats from thunderstorms include hail, downbursts, and tornadoes.