Subvisible cirrus clouds – a dynamical system approach

Properties of subvisible cirrus clouds formed by homogeneous freezing

Number concentrations and mean sizes of ice crystals and derived microphysical and optical properties of subvisible cirrus clouds (SVCs) formed by homogeneous freezing of supercooled aerosols are investigated as a function of temperature and updraft speed of adiabatically ascending air parcels. The properties of such clouds are insensitive to variations of the aerosol number and size distributi...

Microphysical properties of subvisible cirrus

On the origin of subvisible cirrus clouds in the tropical upper troposphere

Spaceborne lidar observations have recently revealed a previously undetected significant population of Subvisible Cirrus (SVC). We show them to be colder than−74 , with an optical depth below 0.0015 on average. The formation and persistence over time of this new cloud population could be related to several atmospheric phenomena. In this paper, we investigate if these clouds follow the same form...

Dynamical variability, aerosols, and the formation of cirrus clouds

The roles of dynamical variability and aerosols in cirrus cloud formation B. Kärcher and J. Ström Deutsches Zentrum für Luftund Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany Stockholm University, Institute of Applied Environmental Research, Stockholm, Sweden Received: 5 February 2003 – Accepted: 11 March 2003 – Published: 14 March 2003 Correspondence to: B. Kärc...

A Dynamical System Approach to Research in Second Language Acquisition

Epistemologically speaking, second language acquisition research (SLAR) might be reconsidered from a complex dynamical system view with interconnected aspects in the ecosystem of language acquisition. The present paper attempts to introduce the tenets of complex system theory and its application in SLAR. It has been suggested that the present dominant traditions in language acquisition research...