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2001-02 Drought Helped to Shift Rocky Mountain Pine Beetle Outbreak into Epidemic

By Guest PostNovember 5, 2012Environment19th century, alpine research, Arctic, beetles, boulder, british columbia, climate, colorado, continental divide, drought, dynamics, epidemic, episode, evan pugh, forest, front range, lodgepole pine, mountain, native insect, new mexico, North America, northern, pine beetle, ponderosa pine, precipitation, rocky mountains, tania schoennagel, teresa chapman, thomas veblen, university, warmer climate, western slope, wyoming

A new University of Colorado Boulder study shows for the first time that episodes of reduced precipitation in the southern Rocky Mountains, especially during the 2001-02 drought, greatly accelerated development of the mountain pine beetle epidemic.

The study, the first ever to chart the evolution of the current pine beetle epidemic in the southern Rocky Mountains, compared patterns of beetle outbreak in the two primary host species, the ponderosa pine and lodgepole pine, said CU-Boulder doctoral student Teresa Chapman. The current mountain pine beetle outbreak in the southern Rockies — which range from southern Wyoming through Colorado and into northern New Mexico –is estimated to have impacted nearly 3,000 square miles of forests, said Chapman, lead study author. (more…)

Tiny Cloud Droplets

By Guest PostOctober 12, 2012Sciencebulk buoyancy, climate, cloud droplets, cloud microphysics, cloud turbulence, computational research, delaware, dynamics, fine scale, fluid mechanic, formation, global climate, global scales, inertial effect, inertial particle, instrumentation, lian ping wang, ncar, parameterization, rain formation, regional, regional weather, sedimentation, simulation, tiny, tool, university, water cycle, water droplets, weather, wojciech grabowski

UD’s Wang contributes invited paper on cloud microphysics

Lian-Ping Wang, professor of mechanical engineering and joint professor of physical ocean science and engineering at the University of Delaware, recently published an invited critical review paper in the 2013 volume of the Annual Review of Fluid Mechanics, a high impact journal for the fluid mechanics community.

Co-authored with Wojciech Grabowski, a senior scientist from the National Center for Atmospheric Research (NCAR), the paper, titled “Growth of Cloud Droplets in a Turbulent Environment,” addresses a classic cloud physics problem of how cloud turbulence affects the growth of tiny cloud droplets. (more…)

Organics Probably Formed Easily in Early Solar System

By Guest PostApril 4, 2012Scienceamino acids, amphiphiles, bombard, building blocks, cellular membrane, cometary, computer simulation, DNA, dynamics, fred ciesla, life on earth, meteorite, nasa ames, nucleobases, organic compound, planet, proteins, rna, science express, scott sandford, solar nebula, uchicago, ultraviolet radiation, uv radiation

Complex organic compounds, including many important to life on Earth, were readily produced under conditions that likely prevailed in the primordial solar system. Scientists at the University of Chicago and NASA Ames Research Center came to this conclusion after linking computer simulations to laboratory experiments.

Fred Ciesla, assistant professor in geophysical sciences at UChicago, simulated the dynamics of the solar nebula, the cloud of gas and dust from which the sun and the planets formed. Although every dust particle within the nebula behaved differently, they all experienced the conditions needed for organics to form over a simulated million-year period. (more…)

Mapping Tool Analyzes How Climate Change, Conflict and Aid Intersect in Africa

By Guest PostMarch 3, 2012Environmentafrica, aiddata, austin, brigham young university, ccaps data, climate change, dynamic mapping tool, dynamics, francis j gavin, ken lipenga, malawi, minerva initiative, patterns of conflict, policymakers, stability in africa, university of texas, world bank

AUSTIN, Texas — Researchers have developed a new dynamic mapping tool that will help policymakers and other groups determine a country’s vulnerabilities to climate change and conflicts and show how these two issues intersect in Africa.

The pilot version of the tool was released this month by the Robert S. Strauss Center for International Security and Law at The University of Texas at Austin and additional data tools are expected to come online starting this spring. (more…)

Tag Archives: dynamics

2001-02 Drought Helped to Shift Rocky Mountain Pine Beetle Outbreak into Epidemic

Tiny Cloud Droplets

Organics Probably Formed Easily in Early Solar System

Mapping Tool Analyzes How Climate Change, Conflict and Aid Intersect in Africa