atmospheric parameter News

  • From atmospheric pressure to vacuum

    Negative pressure from up to 500 mbar (300 mbar abs.) can already be achieved with one stage. This is possible thanks to the AERZEN positive displacement blowers of series Delta Blower G5, or the newly developed rotary lobe compressors of series Delta Hybrid. A vacuum pumping set is mandatory for pressures below 300 mbar abs., and here a backing pump and a vacuum positive displacement blower are ...

  • Hach Lange transmitter for conductivity, O2, pH – also in potentially explosive atmospheres

    The SI792 2-Wire Transmitter is a specialist for measuring electrochemical parameters such as conductivity, oxygen and pH in the industrial and wastewater treatment sectors. HACH LANGE, which has more than 30 years of experience in liquids analysis, has now launched the second generation SI792, with long-term operational readiness and a high level of measurement reliability. The transmitter is ...


  • Casella Wins ATEX Approval for CEL 350 dbadge Noise Dosimeter

    Casella CEL (UK) launches the new ATEX approved, intrinsically Safe (I.S.) CEL-350 dBadge personal noise dosimeter for use in inflammable atmospheres. The I.S. CEL-350 dBadge can measure all occupational noise parameters in potentially explosive atmospheres, it can record the time history of an individual,s noise exposure throughout the day and features a unique noise exposure alarm. It also ...


    By Casella

  • ADMLC report on dispersion from agricultural sources published

    ‘A review of the limitations and uncertainties of modelling pollutant dispersion from non-point sources’ was published earlier this year. This report presents a detailed literature review, including a summary of agricultural and bioaerosol source parameter ranges particularly of interest to those modelling multiple releases from low-level sources in the vicinity of farm sheds. Results ...

  • 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

  • New Product Alert – VICONOX NO2, NO, CO and Visibility Monitor

    More and more modern vehicles emit less and less CO so there is a growing international requirement to measure the level of both CO and NO/NO2 in road tunnels. The VICONOX provides an elegant solution to these requirements by measuring NO2, NO, CO, visibility and temperature within a single sensor. Designed specifically for use in tunnels, the VICONOX tunnel monitor uses a combination of ...


    By Tunnel Sensors Limited

  • Hiden TMS System for Fast Event Gas Analysis Studies

    Hiden Analytical introduce their Transient Mass Spectrometer System specifically designed for the analysis of fast transient gas events at process pressures near atmosphere. Typical applications include respiratory analysis, process control, pulsed gas experiments for surface reaction/reduction studies in catalyst characterisation and, with high-speed rotating multiport valve, spacial gas ...


    By Hiden Analytical

  • TOXFLAM online

    TOXFLAM is a software code based on an analytical solution to the atmospheric dispersion equation for inert substances that may undergo a first-order chemical or physical decay and have a density that is similar to the air density (Bianconi and ...


    By Enviroware s.r.l.

  • Pesticide impact: comparing lab, field-scale results

    Assessing the environmental risk of pesticide use is an important, complex task that requires knowledge of the equilibrium sorption parameter. This helps researchers assess the risk of pesticides leaching into groundwater. For cost-effective assessments, this is usually determined through batch experiments that find the amount of pesticide in test soils as a function of concentration at a ...

  • Envisat makes first observation of CO2 from manmade emissions

    Using data from the SCIAMACHY instrument aboard ESA's Envisat environmental satellite, scientists have for the first time detected regionally elevated atmospheric carbon dioxide – the most important greenhouse gas that contributes to global warming – originating from manmade emissions. More than 30 billion tonnes of extra carbon dioxide (CO2) is released into the atmosphere annually by ...


    By European Space Agency (ESA)

  • New outdoor sound propagation calculation software

    Based on state of the art calculation methods, Mediterranean Acoustics Research & Development has released new outdoor sound propagation calculation software called Olive Tree Lab Terrain. OTL Terrain is aimed at small scale projects as opposed to large mapping software. It addresses mostly fixed noise sources within a small area where there is control over most of the parameters involved in ...

  • Vaisala's reference radiosonde for climate change measurement entered a prototype phase

    (Atlanta, GA, USA, January 18, 2010) As a global leader in environmental and industrial measurement and a pioneer in its field, Vaisala is committed to research on climate change by providing the best possible measurement tools and leading competence.In response to demand from the international scientific community, Vaisala is developing a reference radiosonde, an important ...


    By Thomson Reuters

  • A cloud sensor measuring more than just clouds: The CHM 15k

    Atmospheric and non-atmospheric parameters in the air space challenge researchers, weather services and airports. Although these applications pursue different targets, there’s one sensor system, satisfying all of those users: the CHM 15k. It scans the atmosphere in heights of up to 15 km and detects clouds, ...

  • New tool could aid safe underground storage of CO2, says MIT

    To prevent global warming, researchers and policymakers are exploring a variety of options to significantly cut the amount of carbon dioxide that reaches the atmosphere. One possible approach involves capturing greenhouse gases such as carbon dioxide at the source -- an electric power plant, for example -- and then injecting them underground. While theoretically promising, the technique has never ...

  • Forest Owners Support EPA's Final Biomass Deferral Rule

    The National Alliance of Forest Owners (NAFO) supports the final U.S. Environmental Protection Agency (EPA) rule to defer the regulation of greenhouse gas (GHG) emissions from biomass for three years while the agency studies the science and policy of regulating biomass energy the same as fossil fuels. David P. Tenny, President and CEO of NAFO, stated, "Forest owners are pleased that the EPA ...


    By PRWeb

  • Nepal, Bhutan to closely monitor air pollutants

    The Himalayan countries of Nepal and Bhutan will, in 2013, have two permanent air monitoring observatories set up by the International Centre for Integrated Mountain Development (ICIMOD) as part of a programme to reduce black carbon and other short-lived climate-forcing pollutants (SLCPs). There has been ...


    By SciDev.Net

  • SMS Vosless Project

    SOM has developed specialised software which tackles the problem of pollution by volatile organic compounds (VOCs) by addressing the causes directly. The problems arising from solvant emissions into the atmosphere from industrial sites can now be resolved by using cleaner products and technologies which limit the problem at source, rather than reinforcing systems for controlling it. The SM ...


  • Casella CEL shows new sound level meter at IOSH 2011

    Casella CEL is proud to announce it will be exhibiting a new sound level meter for occupational and environmental monitoring at IOSH 2011. Major investment in groundbreaking technology has enabled Casella to launch its CEL-630 Series of exciting new sound level meters that can be effortlessly used in an enormous range of noise monitoring situations in both the environment and/or the workplace. ...


    By Casella

  • Fast transient mass spectrometer speeds the process

    Hiden Analytical introduce a new gas analyser - the HPR-20 QIC TMS system - specifically configured for analysis of fast transient pulses and of rapid compositional changes in gaseous processes. Developed for the researcher, the system is suited to studies of diverse thermally triggered and chemically triggered reactions.   The multi-mode Windows 7 MASsoft Professional software features ...


    By Hiden Analytical

  • Deep thinking on the world’s oceans

    Changes in deep ocean conditions affect global climate, with deep warming contributing to sea-level rise and the deep ocean absorbing atmospheric carbon dioxide. To assess change, researchers determine the amount of energy (in the form of heat), water and gases (including carbon dioxide), entering and exiting the ocean. They rely on valuable but infrequent deep ocean measurements from ships, ...

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