air parcel


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air parcel

[′er ‚pär·səl]
(meteorology)
An imaginary body of air to which may be assigned any or all of the basic dynamic and thermodynamic properties of atmospheric air.
References in periodicals archive ?
His expertise in major air parcel hubs will be a major asset for 722 and our clients.
Two categories of flow features are considered: (i) Eulerian climatologies of jet streams, tropopause folds, surface fronts, cyclones and anticyclones, blocks, and potential vorticity streamers and cutoffs and (ii) Lagrangian climatologies, based on a large ensemble of air parcel trajectories, of stratosphere-troposphere exchange, warm conveyor belts, and tropical moisture exports.
CAPE is computed as the amount of buoyant energy available to accelerate an air parcel vertically, with maximum vertical speed estimates in units of Joules per kilogram (J [kg.
The FAA's Advisory Circular AC 00-06B, Aviation Weather, advises that, "Dewpoint is the temperature [to which] an air parcel must be cooled at constant pressure and constant water vapor pressure to allow the water vapor in the parcel to condense into water (dew).
Amazon last month insisted on a significant change to proposed US drone regulations before it introduces 30-minute Prime Air parcel delivery by unmanned aerial vehicles to its American customers.
Over the last few years, UPS has been increasing its domestic air parcel express at an accelerated rate, so as to decrease the difference between their base rates and those of FedEx," says Jerry Hempstead, president Hempstead Consulting.
Ahmed Abdullah bin Lahej, senior manager of Air Shipping Operations on Wednesday said the first seizure was extracted from a man's shirt and tie and a lady's handbag as part of an air parcel.
The cost for shipping: $120 for an air parcel not carried by a mule.
He covers the structure of the atmosphere and its physics, changes (such as seasons) affecting weather, the impact of an air parcel and other atmospheric forces, air masses, pressure systems, fronts, jet streams, and the art of practical forecasting as it applies to sailing.
The authors failed to account for vertical components of air parcel movement; also, by singling out one specific trajectory from the "NW wind" days, they implied much more accuracy to the back trajectories than is justified.
Likewise, an air parcel from the environment will also maintain its value [[theta].