Seminars
The Geolocated Information Processing System (GeoIPS): A System for Processing Geoscience Data for Research and Operations
May 16, 2017 10:30 am
CIRA Directors Conference Room
Presented by: Melinda Surratt & Jeremy Solbrig
Hosted by: Jeremey Solbrig, CIRA
U.S. Naval Research Laboratory Marine Meteorology Division
The Geolocated Information Processing System (GeoIPS) is a Python-based system for processing any data with latitudes and longitudes. It is composed of multiple high-level objects that define standard internal formats for data, description of domains, and construction of imagery and data product recipes. In addition to static sectors, dynamic sectors for following events such as… Read more »
Tropical Cyclone Intensification under Moderate Vertical Wind Shear
May 2, 2017 3:00 pm
ATS 101
Presented by: Rosimar Rios-Berrios
Hosted by: Michael Bell
University at Albany, SUNY
Deep-layer (200−850 hPa) vertical wind shear is generally an inhibiting factor for tropical cyclone intensification. This negative relationship stems from a number of processes, including: vertical misalignment of the vortex, increased stability, ventilation of the upper-tropospheric warm core, and dry air entrainment. Despite these processes, many tropical cyclones can intensify under moderate vertical wind shear—the… Read more »
Understanding Storm Track Shifts Across a Range of Timescales
April 28, 2017 11:15 am
ATS 101
Presented by: Tiffany Shaw
Hosted by: Thomas Birner
University of Chicago
Storm tracks are regions where extratropical cyclones occur most frequently, they control weather and climate in the extratropics. Storm tracks shift latitudinally in response to energetic perturbations across a range of timescales. On seasonal timescales, the Northern Hemisphere storm track shifts poleward between winter and summer and equatorward between summer and winter. On interannual timescales,… Read more »
Digital Holography of Aerosol Particles
April 21, 2017 11:15 am
ATS 101
Presented by: Matthew J. Berg
Hosted by: Sonia Kreidenweis
Kansas State University
Methods to determine the physical properties of aerosol particles is important in a vast array of scientific and applied contexts. Due in part to the difficulty of collecting such particles, a variety of contact-free techniques have been developed that infer information about the particles in an indirect manner. A popular example is elastic light-scattering where… Read more »
Improving geophysical system understanding and modelling by exploring nonlinear data assimilation
March 30, 2017 3:00 pm
ATS 101
Presented by: Peter Jan Van Leeuwen
Hosted by:
University of Reading
Geophysical systems can be characterised as complex, nonlinear and high dimensional. All of these provide major challenges to understanding and modelling. To explore observations and existing knowledge encoded in numerical models to their full extent one can try to combine both sources of information. A systematic tool for doing this is data assimilation. It can… Read more »
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