atmospheric turbulence News

  • Met One Instruments, Inc. Acquires Atmospheric Systems Corporation

    Met One Instruments, Inc. and Atmospheric Systems Corporation Join Innovation, Manufacturing and Expertise to Respond to New Markets Met One Instruments, Inc. www.metone.com announces the acquisition of Atmospheric Systems Corporation, www.minisodar.com. This partnership will enhance the ability to offer complete surface and upper ...

  • ASTM D1357 - 95(2011) standard practice for planning the sampling of the ambient atmosphere

    Since the analysis of the atmosphere is influenced by phenomena in which all factors except the method of sampling and analytical procedure are beyond the control of the investigator, statistical consideration must be given to determine the adequacy of the number of samples obtained, the length of time that the sampling program is carried out, and the number of sites sampled. The purpose of the ...


    By ASTM International

  • Climate change means bumpier air travel

    Turbulence on transatlantic flights will become more frequent and severe by 2050 as carbon dioxide emissions rise, leading to longer journey times and increased fuel consumption, British scientists say in a new study. Turbulence can happen without warning and is caused by climate conditions such as atmospheric pressure, jet streams, cold and warm fronts or thunderstorms. Light turbulence shakes ...


    By GLOBE SERIES

  • ASC and Met One Instruments Announce Partnership

    To begin 2014, Met One Instruments, Inc. (MOI) is excited to announce a new corporate partnership to expand meteorological measurement capabilities. Atmospheric Systems Corporation (ASC), of Valencia, California, is a recognized leader in meteorological remote sensing using Sound Detection And Ranging (SoDAR) to measure vertical wind and turbulence profiles. This partnership will enable Met One ...

  • Climate change promises rough ride for airlines

    Keep that seat belt buckled − it could be a bumpy flight. New research predicts that severe clear air turbulence in the stratosphere could increase by 149% because of climate change. That is because global warming, driven in part by the colossal fossil fuel consumption of today’s massive global jetliner ...


    By Climate News Network

  • ASTM D5527 - 00(2011) standard practices for measuring surface wind and temperature by Acoustic Means

    Sonic anemometer/thermometers are used to measure turbulent components of the atmosphere except for confined areas and very close to the ground. These practices apply to the use of these instruments for field measurement of the wind, sonic temperature, and atmospheric turbulence components. The quasi-instantaneous velocity component measurements are averaged over user-selected sampling times ...


    By ASTM International

  • Paul O’Gorman: Extreme storm tracker

    Original story at MIT News Several winters back, while shoveling out his driveway after a particularly heavy snowstorm, Paul O’Gorman couldn’t help but wonder: How is climate change affecting the Boston region’s biggest snow events? The question wasn’t an idle one for O’Gorman: For the past ...

  • Cassini Spacecraft and Ground Telescope See Violent Saturn Storm

    NASA's Cassini spacecraft and a European Southern Observatory ground-based telescope tracked the growth of a giant early-spring storm in Saturn's northern hemisphere so powerful it stretches around the entire planet. The rare storm has been wreaking havoc for months and shot plumes of gas high into the ...

  • Voyage to Southern Ocean to monitor greenhouse gas air-sea fluxes

    Scientists have set off from the Chilean port of Punta Arenas to spend 42 days amid the high winds and big waves of the Southern Ocean, where they will make groundbreaking measurements to explain how large amounts of climate-affecting gases move between atmosphere and sea, and vice-versa. The cruise should provide important information on factors controlling the flux of the greenhouse gas carbon ...

  • US scientists head to Antarctica for climate research

    More than 30 scientists will embark on a research cruise this month to the Southern Ocean, which surrounds Antarctica. There they will combat cold and wind to study how gases that impact climate change move between the atmosphere and the ocean under high winds and seas. The Southern Ocean Gas Exchange Experiment, a six week cruise aboard the research vessel Ronald H. Brown, is co-sponsored by ...

  • Solid waste incinerator for commercial, industrial and medical industries

    Granite Environmental solid waste incinerators provide a safe and effective solution for solid waste disposal in environmentally sensitive and remote locations. Incineration is a waste treatment technology for the controlled combustion of waste organic materials and substances. Our company has four models for commercial and industrial waste incineration available. Key ...

  • ASTM D5366 - 96(2011) standard test method for determining the dynamic performance of a wind vane

    This test method will provide a standard for comparison of wind vanes of different types. Specifications by regulatory agencies and industrial societies (3-5) have stipulated performance values. This test method provides an unambiguous method for measuring starting threshold, delay distance, and overshoot ratio. 1. Scope 1.1 This test method covers the determination of the ...


    By ASTM International

  • New ADJ_U* Met Data Option Offers Improved AERMOD Model Results for Many Sources

    The most recent scientific updates to U.S. EPA’s AERMET meteorological data processing tool (version 16216r) include a new regulatory default option, ADJ_U*. This new option, which was officially approved for regulatory use in May 2017 after an approximately three-year beta testing period, addresses a long-standing issue with AERMOD and is of interest to many industries. Below is a summary ...

  • ASTM D5741 - 96(2011) standard practice for characterizing surface wind using a wind vane and rotating anemometer

    This practice will characterize the distribution of wind with a maximum of utility and a minimum of archive space. Applications of wind data to the fields of air quality, wind engineering, wind energy, agriculture, oceanography, forecasting, aviation, climatology, severe storms, turbulence and diffusion, military, and electrical utilities are satisfied with this practice. When this practice is ...


    By ASTM International

  • A link between air travel and deaths on the ground

    The atmosphere is full of natural and man-made chemicals, including emissions from fuel combustion and byproducts of living organisms. Many of these chemicals combine in the atmosphere to form tiny solid and liquid particles known as "fine particulate matter" that are 2.5 micrometers or smaller (the average human hair is about 70 micrometers in diameter, by comparison). While it's not clear ...


    By GLOBE SERIES

  • Space technology optimises windmill efficiency

    A French start-up company from ESA’s Business Incubation Centre in the Netherlands has developed a small instrument to measure wind speed and direction from the ground up to heights of 200 metres – information that is vital when deciding where to build a wind turbine to produce electricity. The French company Leosphere developed their system Windcube using ‘lidar’ (light detection and ...


    By European Space Agency (ESA)

  • Henry Darcy Lecture Series in Groundwater Science Offers Two Lectures in 2015

    Dr. Rainer H. Helmig will offer two lectures in the 2015 Henry Darcy Distinguished Lecture Series in Groundwater Science, the National Ground Water and Research Educational Foundation announced today. Helmig is head of the Department of Hydromechanics and Modelling of Hydrosystems at the Institute for Modelling Hydraulic and Environmental Systems, University of Stuttgart, Germany. The first of ...

  • Climate research targets Western wildfire smoke

    Researchers are flying over Western wildfires to sample the thick smoke they emit and study its role in cloud formation and climate. The data-gathering campaign is intended to help scientists flesh out one of the least understood areas of climate: the role of aerosols, or particles given off by wildfires, and how they evolve over time. Biomass burning, such as forest fires and agricultural fires ...


    By Associated Press

  • Summer storm weakening leads to more persistent heat extremes

    Storm activity in large parts of the US, Europe and Russia significantly calmed down during summers over the past decades, but this is no good news. The weakening of strong winds associated with the jetstream and weather systems prolongs and hence intensifies heat extremes like the one in Russia in 2010 which caused devastating crop failures and wildfires. This is shown in a study to be published ...

  • Are TGFs hazardous to air travelers?

    Instruments scanning outer space for cataclysmic explosions called gamma-ray bursts are detecting intense flashes of gamma-ray energy right here in the friendly skies of Earth. These terrestrial gamma-ray flashes, or TGFs, blast through thunderstorms close to the altitude where commercial airliners fly. In fact, they could be too close for comfort. In a recent study,* scientists estimated that ...

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