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  • 1
    Monograph available for loan
    Monograph available for loan
    München : Meteorolog. Inst. der Ludwig-Maximilians-Univ.
    Associated volumes
    Call number: MOP Per 737(3)
    In: Wissenschaftliche Mitteilung
    Type of Medium: Monograph available for loan
    Pages: 69 S. : Ill.
    Series Statement: Wissenschaftliche Mitteilung / Universität München, Meteorologisches Institut 3
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 36 (1987), S. 61-73 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Hochdruckeinfluß im gesamten inneren ALPEX-Gebiet am 22. April 1982 ermöglichte die ALPEX-Aufgabe Nr. 6: die Effekte unterschiedlicher Strahlungserwärmung, welche je nach Höhenlage, topographischen Gegebenheiten und Albedo der alpinen Gebirgskette verursacht werden, zu untersuchen. Der Electra-Flug E-422 mit seinen vierfachen Nord-Süd, Süd-Nord-Flugrouten beschäftigte sich besonders mit der Untersuchung der täglichen Veränderung der atmosphärischen Grenzschicht und der Luftströmung an beiden Seiten der Alpen entlang des Querschnittes beim Gotthard bei ausgeprägten Inversionen. Unter Verwendung der Flugtechnik des “vertikalen Zickzacks” wurden insgesamt 24 Vertikalsondierungen entlang von vier Schnittlinien durchgeführt. Synoptische Radiosonden- und Bodendaten sowie digitale Satelliten- und Mikrobarographendaten werden zur Untersuchung der thermodynamischen Aspekte der täglichen Entwicklung des alpinen Hitzetiefs verwendet. Die Feinstruktur der Grenzschicht wird durch Querschnittanalysen der potentiellen. Temperatur, des Mischungsverhältnisses und der drei Windkomponenten aus den vom Flugzeug entlang der Schnittlinien gewonnenen 1 Hz Daten dokumentiert. Darüber hinaus wurden 15 Flugzeugsondierungen ausgewählt, um die vertikale Verteilung der turbulenten Varianzen und Flüsse an beiden Seiten der Alpen zu beurteilen. Sowohl die Unterschiede in der Struktur und der zeitlichen Entwicklung der alpinen Grenzschicht an der nördlichen und der südlichen Seite der Alpen als auch die Unterschiede zwischen der alpinen Grenzschicht und der Grenzschicht über homogenem Gelände sind signifikant und erfordern eine weitere Diskussion.
    Notes: Summary High pressure influence in the whole inner-ALPEX area on April 22, 1982 gave an opportunity for the ALPEX scientific task no. 6: “To study the effects of differential radiative heating introduced by the alpine mountain range due to elevation, topographic features and albedo”. Electra flight E-422 with its four-fold north-south, south-north flight tracks was especially devoted to study the diurnal variations of the atmospheric boundary layer and the airflow on both sides of the Alps along the Gotthard cross-section under strong inversion conditions. Using the flight technique of “vertical zigzagging”, a total of 24 vertical soundings have been completed along four traverses. Synoptic rawinsonde and surface data, digital satellite data and microbarograph data are used to examine the thermodynamical aspects of the diurnal development of the alpine heat low. The fine structure of the boundary layer is documented by cross-sectional analysis of the potential temperature, mixing ratio and the three wind components from the 1 Hz aircraft data along the traverses. In addition, 15 aircraft soundings have been selected to evaluate the vertical distribution of the turbulent variances and fluxes on both sides of the Alps. The differences of the structure and temporal evolution of the alpine boundary layer on the north and south side of the Alps, as well as the differences between the alpine boundary layer and the boundary layer over homogeneous terrain are significant and need further discussion.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied climatology 39 (1988), S. 30-39 
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Die Arbeit beschreibt ein Vergleichsexperiment zwischen Daten, gewonnen mit Hilfe von Flugzeugen, Radiosonden und einem Laser-Doppler-Anemometer (LDA). Bei den Flugzeugen handelt es sich um eine Falcon, eine Queenair und drei Motorsegler; die Radiosonde ist eine GRAW-Sonde. Die mittleren quadratischen Abweichungen der Temperaturwerte liegen zwischen −0.66 K und +0.52 K; für den Taupunkt ist dieser Bereich zwischen −1.2 K und +1.57 K. Für beide Windkomponenten liegen die mittleren quadratischen Abweichungen zwischen der Sonde, den Sensoren der Falcon und dem LDA im Bereich von −0.92 m s−1 und +0.63 m s−1. Die mittleren quadratischen Abweichungen sind von gleicher Größenordnung wie die absoluten Fehler der Sensoren, was die hohe Qualität der Daten bestätigt.
    Notes: Summary This paper describes an intercomparison experiment between airborne measurement systems, radiosondes and a Laser-Doppler-Anemometer (LDA). The aircraft are a Falcon, a Queenair and three motorized sailplanes; the radiosonde is a GRAW-type sonde. Overall we find arms-difference in temperature of between −0.66 K and +0.52 K. Therms-differences for the dew-points are between −1.2K and +1.57 K. The meanrms-differences between the sonde, the sensors of the Falcon and the LDA are between −0.92 m s−1 and +0.63 m s−1 for both components of the wind. The magnitude of therms-differences are similar to the accuracies of the sensors indicating the high quality of the data.
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 1987-01-01
    Print ISSN: 0177-7971
    Electronic ISSN: 1436-5065
    Topics: Geography , Physics
    Published by Springer
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  • 5
    Publication Date: 1991-01-01
    Print ISSN: 0960-1686
    Electronic ISSN: 1878-2124
    Topics: Geosciences , Physics
    Published by Elsevier
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  • 6
    Publication Date: 1988-01-01
    Print ISSN: 0177-798X
    Electronic ISSN: 1434-4483
    Topics: Geosciences , Physics
    Published by Springer
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  • 7
    Publication Date: 2022-07-06
    Description: This paper describes measurements from shortwave radiation radiosonde ascents done at the Atlantische Expedition 1969. Using the results from a total of 67 ascents mean components of the shortwave radiation budget of the atmospheric layer between the ocean surface and the top of the ascent are discussed. The influence of clouds on the radiation balance is shown by dividing the ascents in classes of cloudiness and cloud altitude. Thereby the albedo of the ocean surface is increasing with increasing amount of cloudiness. Similar the albedo of the troposphere increases involving an increased heating rate of the atmospheric layer.
    Type: Article , PeerReviewed
    Format: text
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  • 8
    Publication Date: 2022-07-07
    Description: During GATE 37 flights with radiometersondes to measure the infrared radiation were made from R.V. "Meteor" at 7.8° N, 22.1° W. This position was close to the ITCZ, very often high reaching convective clouds dominated. The profiles of the irradiances are dominating influenced by clouds. Examples are given, one showing the dependence on cirrus clouds, another that on dense altostratus and nimbostratus clouds. The goal of the measurements was to obtain mean profiles of infrared radiative heating rates, but due to the high variability of the clouds and due to the difficulty to assign the flights to distinct clouds, only three mean profiles could be calculated: - Average of all 37 flights, - Clear skies, - Skies overcast with medium clouds.
    Type: Article , PeerReviewed
    Format: text
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