Sigma Xi Lecture - Advances in Forecasting Thunderstorms, Tornadoes, and Derechos

Sigma Xi Lecture by Morris Weisman, NCAR/MMM

                "Advances in Forecasting Thunderstorms, Tornadoes, and Derechos”

          12:15 PM Tuesday, February 5, 2013, Main Seminar Room, Mesa Laboratory

Systematic SST errors in eastern boundary regions: effect of embedding a high resolution ocean model in CESM

Many coupled global climate models suffer from warm SST biases in eastern boundary regions, sometimes extending to the equator. It has previously been suggested that the warm SST bias has its root in the poor representation of one or more of the following processes: coastal winds, the persistent stratocumulus deck, coastal currents, and upwelling. In this paper we focus on the coastal ocean processes by embedding a high resolution ocean model in the Community Earth System Model (CESM) framework.

The Climate History of Mars: A Geological Perspective

Recent new insights into the climate-related surface geology of Mars, together with major advances in Mars global climate models, have provided unique insights into the climate of Mars over 4 billion years of its history. These new insights show pathways of how Mars might have evolved from "warm and wet" conditions in its early history to the hyperarid, hypothermal conditions of today.

Statistical Post-Processing of Temperature Forecasts: The Importance of Spatial Modeling

IMAGe Brown Bag Seminar(Bring your lunch)In order to represent forecast uncertainty in numerical weather prediction, ensemble prediction systems generate several different forecasts of the same weather variable by perturbing initial conditions and model parameters. The resulting ensemble of forecasts is interpreted as a sample of a predictive distribution. It offers valuable probabilistic information, but often turns out to be uncalibrated, i.e. it suffers from biases and typically underestimates the prediction uncertainty.

Sea Ice Predictability in a Rapidly Changing Arctic Environment

Over the past thirty years, Arctic sea ice has rapidly declined. This has led to a greater interest in marine access to the region and a need for reliable ice predictions. However, the natural variability of sea ice is considerable and likely to change with continued reductions in sea ice. Additionally there is a need for improved understanding on the predictability characteristics of sea ice on interannual to decadal timescales. Here I present results that diagnose mechanisms giving rise to potential predictability in Arctic sea ice in Community Climate System Model (CCSM) integrations.

RAL Seminar Series: Snow Hydrology in the Colorado Rockies

"Emergent change in snow hydrology in the Colorado Rockies: The Senator Beck Basin Hydrologic Observatory & Research Venue"

HAO Colloquium Series Presents Toby Wood, UCSC

Numerical simulations of the solar tachoclineThe tachocline—a thin layer of shear between the Sun's differentially rotating envelope and uniformly rotating interior—has long been recognized as a vital component of the solar dynamo. Recent work suggests that it is also central to the Sun's rotational and compositional evolution.

HAO Colloquium Series Presents Ellen Cousins

Characteristics of variability in high-latitude ionospheric plasma drifts

HAO Colloqiuim Presents Fran Bagenal (CU/LASP)

Is Jupiter a colossal comet? Will Juno decide?Not surprisingly, the king of the planets has the strongest magnetic field among the planets of our solar system, with a reach extending far beyond its orbiting moons. The volcanic moon Io loses a ton of atmospheric material every second, gas that becomes ionized and swept up by the magnetic field. Iogenic plasma fills Jupiter’s giant magnetosphere. Jupiter’s magnetosphere is the largest structure in the solar system, averaging about 150 times the width of the planet.

Transition to Agile Software Development

While not new, Agile frameworks have come into the spotlight in recent years for yielding significant improvements over heavyweight process. The Visualization and Enabling Technologies section has been transitioning to Agile frameworks for our Science Gateways efforts. In this talk I will share what being Agile has meant for group. I will cover our experience in transitioning to Scrum for software development and the benefits we have experienced. I will also discus our newly underway efforts to utilize Kanban for related activities such as user support and infrastructure management.


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