NPS logo Naval Postgraduate School
Dudley Knox Library
        View Item 
        •   Calhoun Home
        • Faculty and Researchers
        • Faculty and Researchers Collection
        • View Item
        •   Calhoun Home
        • Faculty and Researchers
        • Faculty and Researchers Collection
        • View Item
        • How to search in Calhoun
        • My Accounts
        • Ask a Librarian
        JavaScript is disabled for your browser. Some features of this site may not work without it.

        Browse

        All of CalhounCollectionsThis Collection

        My Account

        LoginRegister

        Statistics

        Most Popular ItemsStatistics by CountryMost Popular Authors

        Entrainment rates and microphysics in POST stratocumulus

        Thumbnail
        View/Open
        IconJonsson_Entrainment_2013.pdf (1.829Mb)
        Download Record
        Download to EndNote/RefMan (RIS)
        Download to BibTex
        Author
        Gerber, H.
        Frick, G.
        Malinowski, Szymon P.
        Jonsson, H.
        Khelif, D.
        Krueger, Steven K.
        Date
        2013
        Metadata
        Show full item record
        Abstract
        An aircraft field study (POST; Physics of Stratocumulus Top) was conducted off the central California coast in July and August 2008 to deal with the known difficulty of measuring entrainment rates in the radiatively important stratocumulus (Sc) prevalent in that area. The Center for Interdisciplinary Remotely-Piloted Aircraft Studies Twin Otter research aircraft flew 15 quasi-Lagrangian flights in unbroken Sc and carried a full complement of probes including three high-data-rate probes: ultrafast temperature probe, particulate volume monitor probe, and gust probe. The probes’ colocation near the nose of the Twin Otter permitted estimation of entrainment fluxes and rates with an in-cloud resolution of 1m. Results include the following: Application of the conditional sampling variation of classical mixed layer theory for calculating the entrainment rate into cloud top for POST flights is shown to be inadequate for most of the Sc. Estimated rates resemble previous results after theory is modified to take into account both entrainment and evaporation at cloud top given the strong wind shear and mixing at cloud top. Entrainment rates show a tendency to decrease for large shear values, and the largest rates are for the smallest temperature jumps across the inversion. Measurements indirectly suggest that entrained parcels are primarily cooled by infrared flux divergence rather than cooling from droplet evaporation, while detrainment at cloud top causes droplet evaporation and cooling in the entrainment interface layer above cloud top.
        Description
        The article of record as published may be located at http://dx.doi.org/10.1002/jgrd.50878
        URI
        http://hdl.handle.net/10945/46392
        Collections
        • Faculty and Researchers Collection

        Related items

        Showing items related by title, author, creator and subject.

        • Thumbnail

          On the Source of Organic Acid Aerosol Layers above Clouds 

          Sorooshian, Armin; Brechtel, Fred J.; Jonsson, Haflidi; Feingold, Graham; Seinfeld, John H.; Lu, Miao-Ling; Flagan, Richard C. (2007);
          During the July 2005 Marine Stratus/Stratocumulus Experiment (MASE) and the August-September 2006 Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS), the Center for Interdisciplinary Remotely-Piloted Aircraft ...
        • Icon

          Determining the fine structure of the entrainment zone in cloud-topped boundary layers 

          Horner, Michael S. (Monterey, California. Naval Postgraduate School, 2005-03);
          The objective of this thesis is to obtain a better understanding of cloud-top entrainment through an in-depth analysis of entrainment-zone structure. In situ aircraft measurements taken during the Atlantic Stratocumulus ...
        • Thumbnail

          Determining the fine structure of the entrainment zone in cloud-topped boundary layers 

          Horner, Michael S. (Monterey California. Naval Postgraduate School, 2005-03);
          The objective of this thesis is to obtain a better understanding of cloud-top entrainment through an in-depth analysis of entrainment-zone structure. In situ aircraft measurements taken during the Atlantic Stratocumulus ...
        Feedback

        411 Dyer Rd. Bldg. 339
        Monterey, CA 93943

         

        circdesk@nps.edu
        (831) 656-2947
        DSN 756-2947

        Start Your Research

        • Research Guides
        • How to Cite
        • Search Basics
        • Ask a Librarian
        • Library Liaisons
        • Graduate Writing Center
        • Thesis Processing Office
        • Statistics, Maps & More
        • Copyright at NPS

        Find & Download

        • Databases List
        • Articles, Books & More
        • NPS Theses
        • NPS Faculty Publications: Calhoun
        • Journal Titles
        • Course Reserves

        Use the Library

        • My Accounts
        • Request Article or Book
        • Borrow, Renew, Return
        • Remote Access
        • Workshops & Tours
        • For Faculty & Researchers
        • For International Students
        • For Alumni
        • Print, Copy, Scan, Fax
        • Rooms & Study Spaces
        • Floor Map
        • Computers & Software
        • Adapters, Lockers & More

        Collections

        • NPS Archive: Calhoun
        • Restricted Resources
        • Special Collections & Archives
        • Federal Depository
        • Homeland Security Digital Library

        About

        • Hours
        • Library Staff
        • About Us
        • Visit Us

        NPS-Licensed Resources - Terms & Conditions

        Copyright Notice

         
         

        Facebook logo Federal Depository Library Program Emblem NPS Video Portal

        NPS Home Privacy Policy Copyright Accessibility Contact Webmaster