Browsing University of Hertfordshire by Author "Lawson, Paul"

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    • AIITS: Preliminary light scattering data from Tropical Tropopause Layer cirrus 

      Stopford, Chris; Kaye, Paul H.; Ulanowski, Joseph; Hirst, Edwin; Greenaway, Richard; Dorsey, James; Gallagher, Martin; Woods, Sarah; Lawson, Paul; Thornberry, Troy; Rollins, Drew; Harris, Neil (2015-07-22)
      The new optical particle spectrometer AIITS (Aerosol Ice Interface Transition Spectrometer) is the next instrument in the Small Ice Detector (SID) family. Like SID3, it acquires two-dimensional forward scattering patterns ...

    • Cirrus clouds 

      Heymsfield, Andrew J.; Kraemer, Martina; Brown, Philip; Cziczo, Dan; Franklin, Charmaine; Lawson, Paul; Lohmann, Ulrike; Luebke, Anna; McFarquhar, Greg; Ulanowski, Zbigniew; Van Tricht, Kristof (2017)
      The goal of this article is to synthesize information about what is now known about one of the three main types of clouds, cirrus, and to identify areas where more knowledge is needed. Cirrus clouds, composed of ice ...

    • Cloud Ice Properties: In Situ Measurement Challenges 

      Baumgardner, Darrel; Abel, Steve; Axisa, Duncan; Cotton, Richard; Crosier, Jonathan; Field, P.R.; Gurganus, Colin; Heymsfield, Andrew J.; Korolev, Alexei; Kraemer, Martina; Lawson, Paul; McFarquhar, Greg; Ulanowski, Zbigniew; Um, Junshik (2017-04-10)
      Understanding the formation and evolution of ice in clouds requires detailed information on the size, shape, mass and optical properties of individual cloud hydrometeors and their bulk properties over a broad range of ...

    • Quasi-spherical ice in convective clouds 

      Järvinen, Emma; Schnaiter, Martin; Mioche, Guillaume; Jourdan, Olivier; Shcherbakov, Valery N.; Costa, Anja; Afchine, Armin; Krämer, Martina; Heidelberg, Fabian; Jurkat, Tina; Voigt, Christiane; Schlager, Hans; Nichman, Leonid; Gallagher, Martin; Hirst, Edwin; Schmitt, Carl; Bansemer, Aaron; Heymsfield, Andy; Lawson, Paul; Tricoli, Ugo; Pfeilsticker, Klaus; Vochezer, Paul; Möhler, Ottmar; Leisner, Thomas (2016-09-21)
      Homogeneous freezing of supercooled droplets occurs in convective systems in low and midlatitudes. This droplet-freezing process leads to the formation of a large amount of small ice particles, so-called frozen droplets, ...