| As they move eastward, moisture evaporates into the air, making the air mass more like a maritime tropical air mass. |
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| The languid, soupy air mass surrounded us and wrapped us in its stifling grip. |
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| If the front moves across a surface with a warmer temperature than the lower parts of the air mass, then the front will become unstable. |
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| Note that the air mass is approximately equal to the secant of the zenith angle. |
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| An air mass of 1 means that the sun is directly overhead and the radiation travels through one atmosphere. |
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| The other process to consider is the temperature of the body that the air mass travels across. |
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| The anticyclonic ridge strengthened on its northern side and interrupted the full force of the colder air mass. |
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| A warm front occurs at the leading edge of a warm air mass that is moving to replace a cooler air mass. |
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| On the other hand, if a cold air mass is retreating and warm air is advancing, a warm front exists. |
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| As benign and pastoral as this scene might appear, areas of virga can produce 65-knot columns of downward tumbling air mass. |
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| The polar continental is usually a dry air mass, having little distance to travel over the sea. |
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| The air mass only gives an indication of the type of weather which may occur. |
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| This usually forms when the air mass that is lifted is quite extensive, and can occur in most areas. |
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| The air mass bringing the coldest temperatures is the polar continental mass that comes in from the Soviet Union. |
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| This keeps the air mass above the continent cold, and in the cold and dark, clouds that contain chlorine can form in the polar stratosphere. |
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| The rotating air mass creates a high-pressure system throughout the region. |
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| The very moist air was lifted above the cool air mass from the northwest that settled in the St. Lawrence valley. |
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| The air mass beneath the ridge may become stagnant, with light winds at all levels causing air pollutants to linger, producing haze. |
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| The price the guitar pays for its beguiling shapeliness is primarily forfeited air mass. |
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| After sunset, the surface cools and the air mass stabilizes slowly, causing the convective activity to die off and the clouds to dissipate. |
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| If the colder air mass is retreating, then the trailing edge of the transition zone is described as being a warm front. |
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| Static directional stability is a measure of the tendency of an airplane to weathervane into the free stream air mass. |
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| This stability of the specific humidity makes it useful as an identifying property of a moving air mass. |
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| There is also a second form of air mass thunderstorm that is created by cold advection. |
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| An advective, or windborne freeze, occurs when a cold air mass moves into the area, and brings freezing temperatures. |
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| The air mass over the region was very moist, and after 0600 EDT, fog and low cloud began to form. |
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| The humid air mass moves northward during the summer, wedging beneath the drier air mass. |
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| Polar air mass, air mass that forms over land or water in the higher latitudes. |
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| An unusually cold air mass brought wet snow to Japan's capital on Thursday. |
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| The incoming polar air mass and clear night sky produces this year's heaviest frost. |
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| However, one should be prepared to encounter sinking air mass or head wind. |
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| Saturation exists when an air mass at a given temperature contains the maximum quantity of water vapour that it is capable of containing. |
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| The inlet is sheltered on three sides by high terrain and was under the influence of the same air mass. |
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| The air mass was stable and fairly moist in the lowest levels, but was dry aloft. |
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| Highs depicted on surface weather maps typically mark the high-pressure centres of an air mass. |
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| For this reason, check to make sure the sensors such as the air mass sensor or temperature sensor are functioning properly. |
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| With the instability of the air mass embedded in the synoptic system, some upper air winds could have been pushed down to the surface. |
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| This ushered in a much cooler air mass, accompanied by showers and strong winds. |
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| This is due to the cold and dry Arctic air mass over the frozen Arctic Ocean, which only provides a small amount of water vapour. |
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| Southwesterly drifts indicate a drier air mass is taking over. |
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| The cold air mass caused low temperatures along the Pacific coast. |
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| For those who would like a technical explanation, as the sun approaches the horizon, its light has to pass through a greater air mass, including ozone, dust and water vapour. |
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| However, because the succeeding anticyclone progresses eastward quickly, the full force of the cold air mass will be thwarted in its northward push. |
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| The general uplift in this warm, moist air mass enables a slight night-time cooling with Nimbostratus clouds and more light rain. |
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| In particular, he studies how air mass boundaries such as 'lake-breeze fronts' in Ontario and 'drylines' in Alberta act to influence both thunderstorm and tornado development. |
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| In a cold front, the leading edge of an advancing cold air mass meets less dense warm air and forces it up sharply like a blade, causing instability. |
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| The slope of the north side of Laurentides Park also contributed to increasing the lifting of the tropical air mass as it moved into the Saguenay from the northeast, pushed by the cyclonic circulation. |
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| Widely spaced air mass thunderstorms are common, however, more organised lines of thunderstorm activity often accompany the passage of cold fronts. |
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| In the latter case, additional information regarding air mass movements in the atmosphere must be combined with the satellite data in order to model the near ground-level contamination. |
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| Over warm continental areas, however, the air mass is strongly heated so that, instead of fog and low stratus clouds, widely scattered and locally heavy afternoon thunderstorms occur. |
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| As a low-pressure system moved in from northwestern Ontario, a southeasterly wind developed in the Ottawa Valley, causing some mixing of the air mass at low levels. |
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| The mercury has been soaring in the state since the weekend because of an air mass hovering over Queensland. |
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| This broad air mass originated in the Congo's atmosphere and was advected into our circulation some weeks ago. |
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| Air motions that accompany weather systems, along with air mass differences, cause temperature and pressure variations that differ from the average conditions of the Standard Atmosphere. |
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| Through targeted air mass control, further potential for optimisation will be realised by the petrol and diesel engines of the future with homogeneous self-ignition combustion process. |
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| Unlike many tropical systems which become absorbed in frontal systems as they enter Atlantic Canada, Bill encountered a moist tropical-like air mass over much of the Maritimes and Newfoundland. |
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| The night before 21 March, the weather conditions were anticyclonic, no wind, little convection and a warm air mass about 600 meters above, stopping the vertical dispersion of the pollutants. |
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| Analysis of the weather and air mass movements over the period of time in question shows the geographical area from where the emissions emanated, the original source of pollution. |
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| These air masses are linked to mortality so that it is possible to predict the likelihood of excess mortality based on the predicted arrival of an offensive air mass categorized with local weather forecast data. |
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| Compared to a turbojet of identical thrust, a turbofan has a much larger air mass flow rate. |
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| If the increasing air mass flow reduces the fuel ratio below certain value, flame extinction occurs. |
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| Propeller engines handle larger air mass flows, and give them smaller acceleration, than jet engines. |
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| Stratus is a stable cloud deck which tends to form when a cool, stable air mass is trapped underneath a warm air mass. |
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| When moist air tries to dislodge an arctic air mass, overrunning snow can result within the poleward side of the elongated precipitation band. |
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| The Bergeron classification is the most widely accepted form of air mass classification. |
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| Warm fronts occur where the warm air pushes out a previously lodged cold air mass. |
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| In meteorology, an air mass is a volume of air defined by its temperature and water vapor content. |
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| Once an air mass moves away from its source region, underlying vegetation and water bodies can quickly modify its character. |
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| Surface flux from underlying vegetation, such as forest, acts to moisten the overlying air mass. |
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| The north-west and west will have more cloud and a bit more moisture but the warm air mass is staying over Scotland. |
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| While extratropical cyclones form and intensify in association with fronts, there are small-scale cyclones that appear in the middle of a single air mass. |
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| Bad servicing, for instance uncleanliness when changing air filters, use of wrong or substandard air filters can be the cause of dirt and damage to the air mass sensor. |
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| From time to time, this very cold arctic air mass will flow southeastward across Ontario and Quebec, clearing skies and bringing chilling temperatures in the wake of transient low-pressure systems. |
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| The air mass of such a wind is cooled adiabatically as it passes upward to the mountain crests, which precipitates either rain or snow and retards the rate of cooling. |
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| Inversions can develop when a warmer, less dense air mass moves over a cooler, denser air mass creating a temperature inversion where the air is now cooler closer to the surface. |
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| When heated or moistened from the ground with strong turbulence, this type of air mass develops limited convective stratocumulus cloud forms with scattered light rain or snow showers. |
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| The cool, moist and unstable air mass which stubbornly clung to most of the province allowed for significant convective activity, which pushed monthly rainfall amounts well above average in many areas. |
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| After a 227-day drought ending with December temperatures above 90, a polar air mass collided with a wave of damp tropical air, condensed it in seven days of cloudburst. |
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| Examples of genetic classification include methods based on the relative frequency of different air mass types or locations within synoptic weather disturbances. |
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| Over France the altocumuli castellani clouds at medium level indicate a very unstable air mass there, because these clouds often develop into thunderstorms. |
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| Such is the impact of the advancing spread of the Torrid climate belt and its associated moist air mass in response to warming and the consequent change of climate patterns. |
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| In the natural gas pipeline industry, turbochargers are used on two-stroke cycle engines to create an in-cylinder lean air-to-fuel mixture by increasing the trapped air mass. |
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| A wide variety of weather can be found along an occluded front, with thunderstorms possible, but usually their passage is associated with a drying of the air mass. |
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| The pontiff and the Queen will meet on September 16 at Holyrood House in Edinburgh before he travels to Glasgow for an open air mass at Bellahouston Park. |
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