Showing results for: aerosol monitoring Articles
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A Special Issue of the Journal of the Air & Waste Management Association on Regional and Global Perspectives on Haze: Causes, Consequences, and Controversies
This issue of the Journal of the Air & Waste Management Association contains selected papers presented at the October 2004 A&WMA Visibility Specialty Conference in Asheville, NC. (A CD-ROM containing full manuscripts or extended abstracts of each paper is available from the A&WMA Online Library at http://www.awma. org; Order Code VIP-134-CD, ISBN 0–923904-72–5.) The title of the conference, ...
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New product announcement - Introducing the next generation Aurora NE series of integrating nephelometers
Best-in-class aerosol monitoring & measurement just got better – Introducing the next generation Aurora™ NE series of integrating nephelometers How do you improve on the world’s most reliable aerosol monitoring and measurement instrument that has earned a reputation for being best-in-class by respected environmental scientists and global research institutes? The answer ...
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Reference Compilation: Lufft Ceilometers in Science & Aviation
Professionals around the world trust in OTT HydroMet’s ceilometer series Lufft CHM. Thanks to its robust, stand-alone design and reliable measurement performance the Lufft CHM 8k and CHM 15k have become the instrument of choice of meteorologists at weather services, research institutes, and airports. Download this reference compilation and discover real case studies and projects ranging ...
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TSI dust monitors and Lufft weather sensors make a great team
Both aerosols and wind speed and direction influence air quality significantly. This is why TSI Incorporated, a world leader in particle measurements, cooperates with Lufft USA in order to provide complete systems to measure PM2.5 (fine dust), PM10 (particles with a maximum diameter of 10 μm) as well as total PM levels. TSI Incorporated offers a variety of aerosol monitors for real-time, ...
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Xact 625i in Nationwide Atmospheric Network
Xact 625i has been selected for the ASCENT network for characterizing aerosols in high time resolution using state-of-the-art instruments. SailBri Cooper, Inc. is pleased to announce its participation in Atmospheric SCience and mEasurement NeTwork (ASCENT). This new air monitoring network in the United States was made possible by a $12 million grant from the Mid-Scale Research Infrastructure ...
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Organic carbon at a remote site of the western Mediterranean Basin: sources and chemistry during the ChArMEx SOP2 field experiment
Abstract The ChArMEx (Chemistry and Aerosols Mediterranean Experiments) SOP2 (special observation period 2) field campaign took place from 15 July to 5 August 2013 in the western Mediterranean Basin at Ersa, a remote site in Cape Corse. During the campaign more than 80 volatile organic compounds (VOCs), including oxygenated species, were measured by different online and offline techniques. At ...
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Thermodynamics by the pool
Summer weather has finally reached Finland, so yesterday I decided to move the office to a near-by outdoor swimming facility. The poolside was quite a good place to think about thermodynamics, as it provides several every-day examples of some of the relevant phenomena: the water evaporating from the skin and creating cold shivers tells us about the latent heat in phase transitions. The kids ...
By Airmodus Oy
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Critique of “Precipitation in Light Extinction Reconstruction” by P.A. Ryan
Untitled Document The goal of the Regional Haze Rule (RHR) is to return visibility in class I areas (CIAs) to natural levels, excluding weather-related events, by 2064. Whereas visibility, the seeing of scenic vistas, is a near instantaneous and sightpath- dependent phenomenon, reasonable progress toward the RHR goal is assessed by tracking the incremental ...
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The effect of mineral dust and soot aerosols on ice microphysics near the foothills of the Himalayas: A numerical investigation
Abstract: This study investigates the influence of different ice nuclei (IN) species and their number concentrations on cloud ice production. The numerical simulation with different species of ice nuclei is investigated using an explicit bulk-water microphysical scheme in a Mesoscale Meteorological Model version 5 (MM5). The species dependent ice nucleation parameterization that is based on the ...
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Aircraft measurements of the impacts of pollution aerosols on clouds and precipitation over the Sierra Nevada
Recent publications suggest that anthropogenic aerosols suppress orographic precipitation in California and elsewhere. A field campaign (SUPRECIP: Suppression of Precipitation) was conducted to investigate this hypothesized aerosol effect. The campaign consisted of in situ aircraft measurements of the polluting aerosols, the composition of the clouds ingesting them, and the way the ...
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New Analytical Chemistry Paper on CHARON PTR-TOFMS Performance
Bulk Organic Aerosol Analysis by PTR-MS with High Precision & Accuracy Very recently, we have published a technical note in Analytical Chemistry introducing an improved methodology for the determination of organic aerosol properties with CHARON PTR-TOFMS. By analysis of a large set of pure compounds we were able to derive an algorithm to correct for ionic fragmentation. Therefore CHARON is ...
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Taking CHARON PTR-TOF to the Sky
At the Frontier of Airborne Research aboard NASA’s Flying Laboratory Using the opportunity provided by NASA’s Student Airborne Research Program (SARP) we gave wings to our newly developed CHARON aerosol inlet. In cooperation with the University of Oslo our team combined CHARON and a custom built PTR-TOF 4000 instrument. “Business Class” for our airworthy CHARON PTR-TOF ...
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Advantages of using the Ecotech three wavelength nephelometer for aerosol measurements
The measurement of the scattering properties of aerosols is limited by the errors introduced by typical single wavelength integrating nephelometers. These limitations, however, can be reduced by implementing the features of the Ecotech Three Wavelength Integrating Nephelometer. These limitations are predominantly contributed by particle size, relative humidity, Lambertian distribution of the ...
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Evaluation of occupational exposure to aerosol emitted from die sinking electrical discharge machining process
Emission of toxic gases and aerosols is a critical occupational threat in the die sinking Electrical Discharge Machining (EDM) process. The present study is focused on the concentration of aerosols in the breathing zone of the EDM operator at various process parameters. Peak current, pulse duration, dielectric level and flushing pressure were the process parameters considered in this study, and ...
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Seasonal contrast in size distributions and mixing state of black carbon and its association with PM1.0 chemical composition from the eastern coast of India
Abstract Over the Indian region, aerosol absorption is considered to have potential impact on regional climate, monsoon and hydrological cycle. Black carbon (BC) is the dominant absorbing aerosol, whose absorption potential is largely determined by its microphysical properties, including its concentration, size and mixing state with other aerosol components. The Indo5 Gangetic Plains (IGP) is ...
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NIOSH Announces Sampling Strategy to Help Identify Potential Nanomaterial Exposure in an Occupational Setting
On November 1, 2016, the National Institute for Occupational Safety and Health (NIOSH) published a blog item entitled “Never fear! NEAT 2.0 is here! — How to perform nanomaterial exposure assessment in the workplace.” NIOSH notes that in 2009, it developed and was the first to recommend using the nanoparticle emission assessment technique (NEAT). According to NIOSH, NEAT made ...
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Selecting an Airborne Particle Counter: Types of Monitoring (Series Part 2 of 4)
Frequent or Continuous? Frequent Monitoring To demonstrate compliance to ISO, frequent monitoring requires sampling at specified time intervals not exceeding 60 minutes during operation. Manifold systems are the least expensive solution and usually installed during the cleanroom construction process. Standalone particle counters may be installed at any time. A manifold system includes either 16 ...
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Deposition of ionic species and black carbon to the Arctic snow pack: Combining snow pit observations with modeling
Abstract. Although aerosols in the Arctic have multiple and complex impacts on the regional climate, their removal due to deposition is still not well quantified. We combined meteorological, aerosol, precipitation, and snow pack observations with simulations to derive information about the deposition of sea salt components and black carbon (BC) from November 2011 to April 2012 to the Arctic snow ...
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SITHERMO: Development of a Novel Lidar System for the Profiling of Atmospheric Aerosols and Temperature (project code: Τ1ΕDΚ-02525) - Case study
Program: Operational Program «Competitiveness, Entrepreneurship and Innovation», under the call RESEARCH – CREATE – INNOVATE Starting date: 25/05/2018 Duration: 36 Μonths Summary: The object of the project is to develop the know-how and subsystems required for the construction of the first global lidar trading system for the simultaneous measurement of aerosols and ...
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On the Application of Open-Path Fourier Transform Infrared Spectroscopy to Measure Aerosols: Observations of Water Droplets
ABSTRACT This paper proposes the application of Open-Path Fourier Transform Infra-Red (OP-FTIR) spectroscopy to measure aerosols. A preliminary experiment conducted in a standard shower chamber generated a condensed water aerosol cloud. The OP-FTIR beam acquired spectra through the cloud of water droplets. We matched calculated extinction spectra to measured extinction in the spectral range ...
By Arcadis
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