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Klimaforschung mit HALO über dem brasilianischen Regenwald

By Guest PostOctober 11, 2014Scienceadam blumenthal, aerosol, arash nikoubashman, brasilien, cloud, coping, dlr, dynamics, feel the pain, gaspee affair, gaspee project, google vr technology, halo, klimaforschung, meinrat andreae, nudeltopologie, precipitation, rebound from failure, selin malkoc, tohoku oki earthquake

Gewitterwolken über dem Regenwald sind ein wichtiges Element im Klimasystem. Von Anfang September bis Anfang Oktober 2014 war das vom Deutschen Zentrum für Luft- und Raumfahrt (DLR) betriebene Forschungsflugzeug HALO in Manaus im Amazonasgebiet in Brasilien, um die Entstehung, Entwicklung und Eigenschaften von tropischen Wolken zu vermessen. Mit der Mission ACRIDICON (Aerosol, Cloud, Precipitation and Radiation Interactions and Dynamics of Convective Cloud Systems) wollen die Forscher die mikrophysikalischen Vorgänge in den Wolkentürmen genauer verstehen, die für ihre Klimawirkung bestimmend sind. Zudem untersuchen die Forscher, wie Spurenstoffe durch hochreichende Wolken nach oben transportiert werden und wie Brandrodungen die Wolkeneigenschaften und den Niederschlag beeinflussen. Die wissenschaftliche Leitung der Messflüge lag beim Max-Planck-Institut für Chemie (MPIC) und der Universität Leipzig. Insgesamt sind an der HALO-Flugkampagne 23 wissenschaftliche Institutionen beteiligt. Das Forschungsflugzeug HALO ist eine Gemeinschaftsinitiative deutscher Umwelt- und Klimaforschungseinrichtungen. (more…)

Plumes across the Pacific Deliver Thousands of Microbial Species to West Coast

By Guest PostDecember 20, 2012Environmentaerobiology, aerosol, air pollution, aircraft, asia, atmospheric particle, bacterial, balloons, biomass, cascade mountains, central oregon, dale griffin, daniel jaffe, david j smith, dilution, DNA, dust, dust plume, earth, ecosystem, fungal, global wind circulation, harmless, hilkka timonen, kevin perry, michael roberts, michele birmele, microorganism, molecular method, mount bachelor, NASA, North America, old classification, pacific ocean, peter ward, plume event, pollutant, traditional paradigm, trans pacific trip, troposphere, university of utah, university of washington, west coast

A surprising number of microorganisms – more than 100 times more kinds than reported just four months ago – are leaping the biggest gap on the planet. Hitching rides in the upper troposphere, they’re making their way from Asia across the Pacific Ocean and landing in North America.

For the first time researchers have been able to gather enough biomass in the form of DNA to apply molecular methods to samples from two large dust plumes originating in Asia in the spring of 2011. The scientists detected more than 2,100 unique species compared to only 18 found in the very same plumes using traditional methods of culturing, results they published in July. (more…)

UA Climate Scientists Put Predictions to the Test

By Guest PostSeptember 18, 2012Environmentaerosol, arizona, atmosphere, climate, climate change, climate model, climate scientist, climate variability, cloud, criteria, deforestation, earth system, emission, fossil fuel, global temperature, greenhouse gas, hindcast, ipcc, koichi sakaguchi, michael brunke, model, ocean current, particle, precipitation, prediction, solar activity, spatial resolution, surface, surface moisture, university, urbanization, volcanic eruption, weather forecaster, xubin zeng

A new study has found that climate-prediction models are good at predicting long-term climate patterns on a global scale but lose their edge when applied to time frames shorter than three decades and on sub-continental scales.

Climate-prediction models show skills in forecasting climate trends over time spans of greater than 30 years and at the geographical scale of continents, but they deteriorate when applied to shorter time frames and smaller geographical regions, a new study has found.

Published in the Journal of Geophysical Research-Atmospheres, the study is one of the first to systematically address a longstanding, fundamental question asked not only by climate scientists and weather forecasters, but the public as well: How good are Earth system models at predicting the surface air temperature trend at different geographical and time scales? (more…)

Link Between Air Pollution and Cyclone Intensity in Arabian Sea

By Guest PostNovember 5, 2011Environmentabcs, aerosol, air pollution, amato evan, anjuli bamzai, arabian sea, arabian sea cyclones, atmospheric and oceanic circulation patterns, atmospheric brown clouds, atmospheric concentrations of pollutants, biomass, chul eddy chung, climate, climatological vertical wind shear, cyclone gonu, cyclone phet, diesel emissions, gujarat, gulf of oman, gwangju institute of science and technology, himalayan glacial melting, India, iran, james p kossin, lpg fuel, monsoon season, national science foundation, oman, Pakistan, pollution, rainfall patterns in south asia, scripps institution of oceanography, sea surface temperatures, south korea, storms, university of virginia, veerabhadran ramanathan, wind shear patterns

*Disruption of wind shear enables stronger storms*

Pollution is making Arabian Sea cyclones more intense, according to a study in this week’s issue of the journal Nature.

Traditionally, prevailing wind shear patterns prohibit cyclones in the Arabian Sea from becoming major storms.

The Nature paper suggests that weakening winds have enabled the formation of stronger cyclones in recent years–including storms in 2007 and 2010 that were the first recorded storms to enter the Gulf of Oman. (more…)

Tag Archives: aerosol

Klimaforschung mit HALO über dem brasilianischen Regenwald

Plumes across the Pacific Deliver Thousands of Microbial Species to West Coast

UA Climate Scientists Put Predictions to the Test

Link Between Air Pollution and Cyclone Intensity in Arabian Sea