June 2015

Issue 68



American Geophysical Union Fall Meeting, AGU-2105, San-Francisco, December 14-19, 2015 http://fallmeeting.agu.org/2015/


Deadline for abstract submission: 5 August 2015, 11:59 P.M. EDT


Session 8664, Polarimetry as a tool to study the Earth, Solar System and Beyond

Conveners: P. A. Yanamandra-Fisher, L. Kolokolova, A.-Ch. Levasseur-Regourd, H. Lamy


Polarimetry is a powerful tool providing a wealth of information about various solar system objects (e.g., planetary atmospheres; atmosphereless objects, comets, dust, asteroids, ring systems) and terrestrial phenomena, including habitability. Polarimetric techniques, combined with imaging and spectroscopic methods, are used to explore the microphysics of terrestrial clouds; magnetic fields; biological activity of molecules and properties of regoliths on planetary satellites. The session is open to invited and contributed oral and poster papers about recent observational results; advances in vector radiative transfer theory (including non-sphericity effects on single scattering); laboratory measurements; instrumental developments for imaging and spectropolarimeters to be included in ground-based facilities and space missions in planetary and earth sciences.


Session 8230, The Underappreciated Aerosol Coarse Mode

Conveners: E. Kassianov, W. Arnott, J. Barnard, A. McComiskey


Many areas of the world show an aerosol volume distribution with a significant coarse mode and sometimes a dominant coarse mode. The large coarse mode is usually due to dust, but other aerosols can also play an important role. This mode tends to be ignored because it is difficult to measure, and the perception that it does not exert a large effect on aerosol forcing or chemistry. However, coarse mode aerosols can have a significant effect on radiative forcing, both in the shortwave and longwave spectrum, and these forcings must be accounted for in atmospheric models. Forcings based only on fine mode aerosols have the potential to be misleading, as demonstrated in recent studies. We seek papers regarding: coarse mode aerosol generation mechanisms, transport and deposition, chemical composition and interaction with fine mode aerosols, visible and thermal IR refractive radiative properties, coarse mode effects on forcing, and specific instrumentation needs.


New book



edited by Ludmilla Kolokolova, James Hough and Anny-Chantal Levasseur-Regourd

Cambridge University Press, www.cambridge.org/9781107043909


Summarizing the striking advances of the last two decades, this reliable introduction to modern astronomical polarimetry provides a comprehensive review of state-of-the-art techniques, models and research methods. Focusing on optical and near-infrared wavelengths, each detailed, up-to-date chapter addresses a different facet of recent innovations, including new instrumentation, techniques and theories; new methods based on laboratory studies, enabling the modelling of polarimetric characteristics for a wide variety of astronomical objects; emerging fields of polarimetric exploration, including proto-planetary and debris discs, icy satellites, transneptunian objects, exoplanets, and the search for extraterrestrial life; and unique results produced by space telescopes, and polarimeters aboard exploratory spacecraft. With contributions from an international team of accomplished researchers, this is an ideal resource for astronomers and researchers working in astrophysics, earth sciences, and remote sensing keen to learn more about this valuable diagnostic tool. The book is dedicated to the memory of renowned polarimetrist Tom Gehrels.


See http://www.astro.umd.edu/~elsnews/PSPS_book_flyer.pdf for more details and 20% discount



Position Open


Postodoctoral Research Associate in Experimental Optics


The Electromagnetic Scattering group lead by Prof. Matthew Berg in the Department of Physics & Astronomy at Mississippi State University invites applications for a Postdoctoral Research Associate position beginning in August 2016. The initial appointment will be for one year and is renewable for up to two additional years. The successful candidate will conduct experimental research to image coarse-mode aerosol particles with digital holography. Applicants must have a Ph.D. in a physics or engineering discipline and have experience in laboratory optics. United States citizenship is not required. Interested candidates should contact Prof. Berg (below) via email and provide a complete curriculum vitae and a description of research experience and interests.


Matthew J. Berg

Department of Physics & Astronomy

Mississippi State University

Mississippi State, MS 39759 USA

Email: mberg81@gmail.com



See recently indexed and summarized papers on the optics of particles and dispersions in TPDSci: http://www.tpdsci.com/Sv_.phplist=SvPdo


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