On July 5 (NCAR Electra flight 4, Mission 186-G) the Electra flew a single aircraft mission which consisted of cross and along-wind legs at 6 different altitudes between 10:43 to 16:00 PDT (17:43 to 23:00 GMT). The leg length was kept short (8 to 10 minutes) to permit maximum vertical resolution, and there were 8 soundings. Observer notes report a thin, solid stratocumulus cloud deck which gradually became more broken in the afternoon. Winds were from the north at 10 to 13/ms throughout the night. Sea surface temperature measurements and conservative variable analyses for several of the July 5 legs are presented. These results are preliminary to a study of the thermodynamic budget on July 5; they indicate that: the sea surface temperature dropped more than 1 K (from 17.3 to 15.9 C) over the course of the flight (18:01 and at 21:51 GMT); mixing lines for each of the horizontal subcloud legs show the effect of a strong north-south gradient in SST; and there is a clear demarcation over a transition of 5 to 10 km between air to the south and cooler, moister air to the north. The FSSP measurements indicate there are small clouds/scud 250 m below cloud base on the cold northern side of this transition. The transition is seen in the saturation point diagrams at 984, 959, and 946 mb. There is no corresponding change in the horizontal wind across the transition regions.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    A stratocumulus thermodynamic analysis: July 5 case study


    Beteiligte:
    Austin, Philip (Autor:in)


    Erscheinungsdatum :

    1990-07-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Structural analysis of stratocumulus convection

    Siems, S. T. / Baker, M. B. / Bretherton, C. S. | NTRS | 1990


    Suppressing Ship-Produced and Ship-Modified Marine Stratocumulus

    Hindman, E. E. / American Meteorological Society | British Library Conference Proceedings | 1998




    Introduction and study of Caspian Clouds (Case study from July 20 to 31, 2013)

    shahnaz Rashedi / Saeed jahanbakhsh / Ali Khorshiddoust et al. | DOAJ | 2023

    Freier Zugriff