caa a22 4500 475777727 CHVBK 20180406123635.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1023/A:1002634613282 doi (NATIONALLICENCE)springer-10.1023/A:1002634613282 A Modelling Approach For Optimizing Flight Patterns In Airborne Meteorological Measurements [Elektronische Daten] [Timo Vihma, Christoph Kottmeier] A method is presented for selecting the optimal flight patterns for airbornemeteorological measurements in various flow situations. The method is basedon systematic utilisation of mesoscale model fields. Flow overan Arctic sea-ice boundary zone is modelled, and it is assumed that the mesoscale model fields represent the true state of the atmosphere, and that each possible flight pattern yields a different sample of the true fields. A plan for the basic structure of the flight pattern is assumed, and then the unexplained variance, i.e., the difference between the true variance and the sample variance, of a quantity of interest is calculated for a variety of possible flight patterns. Different target quantities are considered, such as wind speed, air temperature, and the turbulent fluxesof momentum and sensible heat. The optimal flight pattern is defined byminimisation of the unexplained variance, and often depends on the quantitywe are interested in. For sawtooth patterns, the optimal flight pattern was sensitive to the maximum ascent angle of the aircraft. In flight patterns designed for turbulence measurements, the optimal pattern was different for the unexplained variance of the turbulent fluxes and for the unexplained total heat content of the convective layer. Kluwer Academic Publishers, 2000 Research aircraft nationallicence Flight pattern nationallicence Mesoscale model nationallicence Heat flux nationallicence Sea-ice nationallicence Vihma Timo Institut für Meteorologie und Klimatologie, Universität Karlsruhe/Forschungszentrum Karlsruhe, Karlsruhe, Germany aut Kottmeier Christoph Institut für Meteorologie und Klimatologie, Universität Karlsruhe/Forschungszentrum Karlsruhe, Karlsruhe, Germany aut Boundary-Layer Meteorology Kluwer Academic Publishers 95/2(2000-05-01), 211-230 0006-8314 95:2<211 2000 95 10546 https://doi.org/10.1023/A:1002634613282 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002634613282 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vihma Timo Institut für Meteorologie und Klimatologie, Universität Karlsruhe/Forschungszentrum Karlsruhe, Karlsruhe, Germany aut NATIONALLICENCE 700 1- Kottmeier Christoph Institut für Meteorologie und Klimatologie, Universität Karlsruhe/Forschungszentrum Karlsruhe, Karlsruhe, Germany aut NATIONALLICENCE 773 0- Boundary-Layer Meteorology Kluwer Academic Publishers 95/2(2000-05-01), 211-230 0006-8314 95:2<211 2000 95 10546 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer