aerosol and dust Articles
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Hydrochemistry and dissolved solute load of meltwater in a catchment of a cold-arid trans-Himalayan region of Ladakh over an entire melting period
The hydrochemical study of meltwater draining from a catchment dominated by snowmelt in a cold-arid trans-Himalayan region of Ladakh, India, was carried out for an entire melting season (May–September) during the year of 2010. Cation concentration in the meltwater shows a consistent trend of Ca > >Mg > Na > K for this period. Carbonate weathering has been identified as the ...
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OGI Range – Long Distance Applications
A discussion of range for OGI technology is more relevant for the OGI fixed solutions, such as EyeCGas 24/7 series of products, where the camera is expected to automatically alert for leaks from longer distance (>100 meters). Since LWIR uncooled OGI cameras are typically far less sensitive than cooled MWIR OGI cameras, they are not the preferable choice for an OGI fixed solution when larger ...
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Aircraft and ground measurements of dust aerosols over the west African coast in summer 2015 during ICE-D and AER-D
Abstract. During the summertime, dust from the Sahara can be efficiently transported westwards within the Saharan air layer (SAL). This can lead to high aerosol loadings being observed above a relatively clean marine boundary layer (MBL) in the tropical Atlantic Ocean. These dust layers can impart significant radiative effects through strong visible and 1R light absorption and scattering, and can ...
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A case study for evaluating potential soil sensitivity in aridland systems
Globally, ecosystems are subjected to prolonged droughts and extreme heat events, leading to forest die‐offs and dominance shifts in vegetation. Some scientists and managers view soil as the main resource to be considered in monitoring ecosystem responses to aridification. As the medium through which precipitation is received, stored and redistributed for plant use, soil is an important factor ...
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Which Sensor is right for my application?
The MiniPID 2 Sensor is offered in five models having the guaranteed range of operation below (Isobutylene equivalent). They are insensitive to humidity changes, providing unparalleled performance in a variety of applications: MiniPID 2 PID PPM has a linear dynamic range of 0 – >4000 ppm. MiniPID 2 PID 10.0 eV has a linear dynamic range of 0 – >100 ppm. MiniPID 2 PID PPB ...
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Variations in mass concentrations of airborne particulate matter over tropical urban environment
Particulate matter (PM) is an important component of the air pollution that has adverse health effects, ecosystem damage and degraded visibility. We analysed the seasonal variations in PM loading from ground-based measurements of PM1.0 and PM2.5, Aerosol Optical Depth (AOD) Black Carbon (BC) aerosol over Hyderabad, India during January-June, 2006. The PM concentrations showed relatively higher ...
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DNI satellite data truth? - How to handle the difference in values derived from different satellite data providers?
Technical Top Tip courtesy of Solar Resource Assessment - When it comes to CSP project evaluation, one of the biggest uncertainty factors for the performance is the available Direct Normal Irradiance (DNI) at the site. 1. DNI vs. GHI DNI distinguishes significantly from GHI (Global Horizontal Irradiance), which is more applicable for Photovoltaic projects. GHI includes direct and diffuse ...
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Distribution of Polycyclic Aromatic Hydrocarbons in the Coastal Region off Macao, China: Assessment of Input Sources and Transport Pathways Using Compositional Analysis
Untitled Document The coastal region off Macao is a known depositional zone for persistent organic pollutants (POPs) in the Pearl River Delta and Estuary of southern China and an important gateway for the regional contributions of contamination to the globe. This paper presents a comprehensive assessment of the input sources and transport pathways of polycyclic aromatic ...
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Measurement of fine dust in combination with Lufft weather sensors - Case Study
Our compact weather stations are part of monitoring stations for measurement of fine dust, manufactured by our customers Grimm Aerosol Technik GmbH and PALAS. The fine dust measurement stations have proved a success the world over. The Lufft compact weather stations WS300-UMB, WS500-UMB, WS600-UMB are used for monitoring of climate data. Thanks to the Lufft sensors the stations will not only ...
By OTT HydroMet
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Leaves of Lolium multiflorum as indicators of airborne trace element distribution in Central Italy
Ambient air contains particles, ranging from sub-micrometric aerosols to clearly visible dust and sand grains. Plants during evolution developed the ability to maximise light interception and CO2 assimilation and also the efficiency to collect the airborne pollutants. Therefore, plant tissues have been used as indicators of trace elements air pollution. Lolium multiflorum leaves were used as a ...
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Long-range transport of dust to the Baltic Sea region
The origin of the September 2001 dust episode around the Baltic Sea was estimated by a model study to be the Ryn Peski desert of Kazakhstan. Some of the coarse particles came from Estonian–Russian sources where oil shale is used. Although the correlation of the high wind velocity over this desert with a corresponding weather system and the south-eastern flow is rather high, similar events can ...
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Synergetic use of TERRA/MODIS imagery and meteorological data for studying aerosol dust events in Cyprus
This paper presents the results from the analysis of TERRA/Moderate Resolution Imaging Spectrometer (MODIS) images for the detection and mapping of particulate air pollution in Cyprus. For this purpose, a set of selected air pollution events for the year 2002 was used, mainly associated with dust transported over the area from the surrounding deserts. The results depict the potential of the use ...
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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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Applicability Assessment of Coherent Doppler Wind LiDAR for Monitoring during Dusty Weather at the Northern Edge of the Tibetan Plateau
Abstract: Wind profile light detection and ranging (LiDAR) is an important tool for observing features within the atmospheric boundary layer. Observations of the wind field and boundary layer height from coherent Doppler wind LiDARs (CDWLs) under sandy and dusty weather conditions were evaluated using observations from two CDWLs and one GTS radio sounding located at the northern edge of the ...
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Aircraft and ground measurements of dust aerosols over the west African coast in summer 2015 during ICE-D and AER-D
Abstract. During the summertime, dust from the Sahara can be efficiently transported westwards within the Saharan air layer (SAL). This can lead to high aerosol loadings being observed above a relatively clean marine boundary layer (MBL) in the tropical Atlantic Ocean. These dust layers can impart significant radiative effects through strong visible and IR light absorption and scattering, and can ...
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Classification of iron oxide aerosols by a single particle soot photometer using supervised machine learning
Abstract. Single particle soot photometers (SP2) use laser-induced incandescence to detect aerosols on a single particle basis. Both refractory black carbon (rBC) and other light absorbing metallic aerosols, including iron oxides (FeOx), have been characterized by the SP2, but single particles cannot be unambiguously identified from their incandescent peak height (a function of particle mass) and ...
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Temporal behaviour of Asian dust aerosols observed in 2001 using meteorological satellite data
The advection and dispersion of Asian dust events from China and Mongolia to the Pacific Ocean around Japan in the spring of 2001 were investigated using meteorological satellite data, NOAA/AVHRR and GMS-5/VISSR. Aerosol Vapour Index (AVI) images, taking the brightness temperature difference between 11 and 12 _m, are very effective in monitoring the Asian dust phenomenon in the east Asian region, ...
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Bird Poop!
Know what bird you need to deter from your property? Check our Interactive Problem Solver; simply click on the pest animal you are dealing with to see product recommendations! Anyone with a bird problem knows all too well about the nuisance it leaves behind – bird poop. As a customer service rep here at Bird-X, I hear countless stories about birds being a problem and the chief complaint is ...
By Bird-X Inc.
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Micro Pulse LiDAR Characterizes Clouds and Identifies Aerosols in South Florida
A Micro Pulse LiDAR (MPL) system at South Florida’s Cloud-Aerosol-Rain Observatory (CAROb) collected data to further research on the effects of low clouds and dust on the climate. Changes in the climate are created by complex interactions between temperature, clouds, aerosols, wind, moisture and a host of other factors. To get a better understanding of the specific impact of numerous low ...
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Studying Clouds in the Antarctic with Micro Pulse LiDAR
Researchers in the Australian Antarctic Science project collected aerosol data above the Southern Ocean to improve their understanding of the connection between clouds and climate change. Evaporation and condensation are the basic concepts leading to cloud formation; however, many factors impact the end results. In general, as water vapor molecules rise from the surface of the Earth, they ...
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