3D trajectory calculations[1] In the midlatitude stratosphere the mean circulation is downward leading to relatively old air. Mixing between this old air and more recent air from the troposphere or the tropical stratosphere can nevertheless occur. In particular, mixing between the lower part of ...
Full size image Low concentration of air pollutants does not mean that it can be neglected. Considering example of lead which is present in the atmosphere in traces, the total quantity in 1983 and in the mid-1990s, were estimated to be about 330,000 tonnes (Nriagu and Pacyna1988) and 120...
1986). These calculations fix the air discharge supplied by the inlets, the underpressure in the cavity beneath the jet and hence the jet trajectory. With the knowledge of Qairvent (from model tests) and Qairupper (eq-(17-2)), it is possible to estimate the flow aeration at the end ...
Trajectory calculations based on the high-resolution numerical weather prediction model, Consortium for Small-scale Modeling (COSMO), were used to locate the source regions and investigate the mechanisms of pollution transport in the complex topogra- phy of the Himalaya and Tibet. Lifting and ...
computational capacity of HCI and incorporate various functions that provide necessary information related to management of trajectory and collateral decision-making tasks such as trajectory estimation [41], detection and resolution of trajectory conflict [42], and appropriate trajectory guidance [43]. The...
The system constantly makes calculations on the trajectory of all the aircraft that it is tracking, ensuring that none of them conflicts with the "safe zone." If it looks like a particular aircraft is heading toward a position where they could become a threat, the system escalates the warning...
commercial operations were expected to require 320,000 newly trained aviators over the next ten years.3 The COVID-19 crisis will defer the need for these pilots by a few years and potentially even lower the number required if commercial aviation does not return to its original ...
Some of the methods include transport and dispersion simulations (source models), such as Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT)4–7, Community Multiscale Air Quality (CMAQ)8–13, and potential source contribution function (PSCF)6,7,14. Many receptor models, such as ...
The trajectory of the intruder is pre-defined for repeatability. Birds were assumed to be appearing on the route from the vicinity of Isar River, where they might be nesting owing to their conservation of their natural habitat. Drones appeared in the vicinity of the Allianz arena, where they ...
The interface to the UAM system is required to communicate for instance trajectory changes to the airtaxi operators (cf. [13], ch. 3.17, p.70). Out of the five requirements, 42 single tasks were derived. For example, the requirement to clear an airtaxi upon a reroute request broke down...