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Aerial Measurement of Radioxenon Concentration off the West Coast of Vancouver Island following the Fukushima Reactor Accident
Fukushima, reactor accident, Xe-133, Xenon, radioxenon,nuclear reactor, airborne, aerial, Monte Carlo, EGSnrc, plume
2011/9/14
In response to the Fukushima nuclear reactor accident, on March 20th, 2011,Natural Resources Canada conducted aerial radiation surveys over water just off of the west coast of Vancouver Island. Dose-r...
The sensitivity of stratocumulus-capped mixed layers to cloud droplet concentration: do LES and mixed-layer models agree?
stratocumulus-capped mixed layers droplet concentration LES and mixed-layer models
2010/8/12
The sensitivity of a stratocumulus-capped mixed layer to a change in cloud droplet concentration is evaluated with a large-eddy simulation (LES) and a mixed layer model (MLM). The strength of the seco...
VOC measurements within a boreal forest during spring 2005: on the occurrence of elevated monoterpene concentrations during night time intense particle concentration events
VOC measurements boreal forest monoterpene concentrations
2009/11/19
In this study we present measurements of selected trace gases and aerosols made in a boreal forest during the BACCI-QUEST IV intensive field campaign in Hyytiälä, Finland in April 2005. Spri...
Long-term behavior of the concentration of the minor constituents in the mesosphere – a model study
Long-term behavior minor constituents mesosphere
2009/5/6
We investigate the influence the rising concentrations of methane, nitrous oxide and carbon dioxide which have occurred since the pre-industrial era, have had on the chemistry of the mesosphere. For t...
Correlation between cloud condensation nuclei concentration and aerosol optical thickness in remote and polluted regions
cloud condensation nuclei concentration aerosol optical thickness polluted regions
2009/3/12
A large number of published and unpublished measurements of cloud condensation nuclei (CCN) concentrations and aerosol optical thickness (AOT) measurements have been analyzed. AOT measurements were ob...
The global mean OH concentration ([OH]GM) has been used as an indicator of the atmospheric oxidizing efficiency and its changes over time. It is also used for evaluating the performance of atmospheric...
Size resolved mass concentration and elemental composition of atmospheric aerosols over the Eastern Mediterranean area
Size resolved mass concentration elemental composition atmospheric aerosols Eastern Mediterranean area
2009/3/11
A Berner low pressure impactor was used to collect size-segregated aerosol samples at Finokalia, located on the north-eastern coast of Crete, Greece during July 2000 and January 2001. Several samples ...
Emergence of a tracer source from air concentration measurements, a new strategy for linear assimilation
air concentration measurements linear assimilation
2009/1/23
The measurement of atmospheric concentrations by a monitoring network is a promising tool for the identification of the widespread sources of trace species. The paper addresses the case of the species...
Processes controlling the concentration of hydroperoxides at Jungfraujoch Observatory, Switzerland
hydroperoxides Jungfraujoch Observatory Switzerland
2009/1/22
An automated, ground-based instrument was used to measure gas-phase hydroperoxides at the Jungfraujoch High Altitude Research Station as part of the Free Tropospheric EXperiment (FREETEX) during Febru...
Technical note: Water vapour concentration and flux measurements with PTR-MS
Water vapour concentration flux measurements PTR-MS
2009/1/16
The most direct approach for measuring the exchange of biogenic volatile organic compounds between terrestrial ecosystems and the atmosphere is the eddy covariance technique. It has been applied sever...
Cluster activation theory as an explanation of the linear dependence between formation rate of 3nm particles and sulphuric acid concentration
Cluster activation theory linear dependence formation rate of 3nm particles sulphuric acid concentration
2009/1/4
According to atmospheric observations new particle formation seems to be a function of sulphuric acid concentration to the power from one to two. The nucleation theorem then predicts that the critical...
Evaluation and modelling of the size fractionated aerosol particle number concentration measurements nearby a major road in Helsinki – Part I: Modelling results within the LIPIKA project
size fractionated aerosol particle Helsinki LIPIKA project
2008/12/16
A field measurement campaign was conducted near a major road "Itäväylä" in an urban area in Helsinki in 17–20 February 2003. Aerosol measurements were conducted using a mobile laborato...
Global statistics of liquid water content and effective number concentration of water clouds over ocean derived from combined CALIPSO and MODIS measurements
liquid water content effective number concentration water clouds CALIPSO MODIS
2008/12/12
This study presents an empirical relation that links the volume extinction coefficients of water clouds, the layer integrated depolarization ratios measured by lidar, and the effective radii of water...
Ambient sesquiterpene concentration and its link to air ion measurements
sesquiterpene air ion
2008/12/11
Ambient air ion size distributions have been measured continuously at the Finnish boreal forest site in Hyytiälä since spring 2003. In general, these measurements show a maximum of air ions ...
Effects of aerosol organics on cloud condensation nucleus (CCN) concentration and first indirect aerosol effect
aerosol organics CCN aerosol effect
2008/11/25
Aerosol microphysics, chemical composition, and CCN properties were measured on the Department of Energy Gulfstream-1 aircraft during the Marine Stratus/Stratocumulus Experiment (MASE) conducted over ...