Institution
The Cyprus Institute
Other•Nicosia, Cyprus•
About: The Cyprus Institute is a other organization based out in Nicosia, Cyprus. It is known for research contribution in the topics: Aerosol & Environmental science. The organization has 418 authors who have published 1252 publications receiving 32586 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a skeletal mechanism was developed using input data from a model scenario and evaluated both a priori and a posteriori by implementing the skeletal mechanism in a chemistry transport model, namely the Weather Research and Forecasting code with Chemistry.
Abstract: . Chemical mechanism reduction is common practice in combustion research for
accelerating numerical simulations; however, there have been limited
applications of this practice in atmospheric chemistry. In this study, we
employ a powerful reduction method in order to produce a skeletal mechanism
of an atmospheric chemistry code that is commonly used in air quality and
climate modelling. The skeletal mechanism is developed using input data from
a model scenario. Its performance is then evaluated both a priori against the
model scenario results and a posteriori by implementing the skeletal
mechanism in a chemistry transport model, namely the Weather Research and
Forecasting code with Chemistry. Preliminary results, indicate a substantial
increase in computational speed-up for both cases, with a minimal loss of
accuracy with regards to the simulated spatio-temporal mixing ratio of the
target species, which was selected to be ozone.
5 citations
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5 citations
08 May 2018
TL;DR: The present research addresses the existing limitations of the current 3D online platforms in terms of content creation, management and interoperability and investigates several open 3D and web-based technologies, e.g. X3D or WegGL, for their possible use for complex 3Dand non-3D content in online environments.
Abstract: Over the last decade, learning settings on SecondLife or OpenSimulator 3D online platforms are employed as a distance service by virtualizing educational spaces or even an entire university campus. To immerse and engage the learners in a 3D space, architectural and ambient objects need to be designed, besides the transfer of the educational assets in a 3D/2.5D environment. The present research addresses the existing limitations of the current 3D online platforms in terms of content creation, management and interoperability. Several open 3D and web-based technologies, e.g. X3D or WegGL, are investigated and evaluated for their possible use for complex 3D and non-3D content in online environments. A working methodology and recommendation of tools are proposed for a more productive development and a prototyping pipeline. The tools provide a higher level of interactivity and facilitate the content visualization in browsers and mobile devices.
5 citations
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11 Jul 20195 citations
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TL;DR: In this article, the authors used active sampling on cartridges and filters and derivatization followed by analysis using a thermal desorption-gas chromatography-mass spectrometer (TD-GC-MS) has been used.
Abstract: . The characterization of the molecular composition of organic carbon in both
gaseous and aerosol is key to understanding the processes involved in the
formation and aging of secondary organic aerosol. Therefore a technique
using active sampling on cartridges and filters and derivatization followed
by analysis using a thermal desorption–gas chromatography–mass spectrometer (TD–GC–MS) has been used. It is aimed at studying the molecular composition of
organic carbon in both gaseous and aerosol phases (PM 2.5 ) during an
intensive field campaign which took place in Corsica (France) during the
summer of 2013: the ChArMEx (Chemistry and Aerosol Mediterranean Experiment)
SOP1b (Special Observation Period 1B) campaign. These measurements led to the identification of 51 oxygenated (carbonyl and
or hydroxyl) compounds in the gaseous phase with concentrations between 21 and 3900 ng m −3 and of 85 compounds in the
particulate phase with concentrations between 0.3 and 277 ng m −3 . Comparisons of these measurements with collocated data using other
techniques have been conducted, showing fair agreement in general for most
species except for glyoxal in the gas phase and malonic, tartaric, malic and
succinic acids in the particle phase, with disagreements that can reach up to
a factor of 8 and 20 on average, respectively, for the latter two acids. Comparison between the sum of all compounds identified by TD–GC–MS in the
particle phase and the total organic matter (OM) mass reveals that on
average 18 % of the total OM mass can be explained by the compounds
measured by TD–GC–MS. This number increases to 24 % of the total water-soluble OM (WSOM) measured by coupling the Particle Into Liquid Sampler (PILS)-TOC (total organic carbon) if we consider only the sum of the
soluble compounds measured by TD–GC–MS. This highlights the important
fraction of the OM mass identified by these measurements but also the
relative important fraction of OM mass remaining unidentified during the
campaign and therefore the complexity of characterizing exhaustively the
organic aerosol (OA) molecular chemical composition. The fraction of OM measured by TD–GC–MS is largely dominated by
di-carboxylic acids, which represent 49 % of the PM 2.5 content
detected and quantified by this technique. Other contributions to PM 2.5
composition measured by TD–GC–MS are then represented by tri-carboxylic
acids (15 %), alcohols (13 %), aldehydes (10 %), di-hydroxy-carboxylic
acids (5 %), monocarboxylic acids and ketones (3 % each), and
hydroxyl-carboxylic acids (2 %). These results highlight the importance of
polyfunctionalized carboxylic acids for OM, while the chemical processes
responsible for their formation in both phases remain uncertain. While not
measured by the TD–GC–MS technique, humic-like substances (HULISs) represent the
most abundant identified species in the aerosol, contributing for 59 % of
the total OM mass on average during the campaign. A total of 14 compounds were detected and quantified in both phases, allowing the
calculation of experimental partitioning coefficients for these species. The
comparison of these experimental partitioning coefficients with theoretical
ones, estimated by three different models, reveals large discrepancies
varying from 2 to 7 orders of magnitude. These results suggest that the
supposed instantaneous equilibrium being established between gaseous and
particulate phases assuming a homogeneous non-viscous particle phase is
questionable.
5 citations
Authors
Showing all 459 results
Name | H-index | Papers | Citations |
---|---|---|---|
Philippe Ciais | 149 | 965 | 114503 |
Jonathan Williams | 102 | 613 | 41486 |
Jos Lelieveld | 100 | 570 | 37657 |
Andrew N. Nicolaides | 90 | 572 | 30861 |
Efstathios Stiliaris | 88 | 340 | 25487 |
Leonard A. Barrie | 74 | 177 | 17356 |
Nikos Mihalopoulos | 69 | 280 | 15261 |
Karl Jansen | 57 | 498 | 11874 |
Jean Sciare | 56 | 129 | 9374 |
Euripides G. Stephanou | 54 | 128 | 14235 |
Lefkos T. Middleton | 54 | 184 | 15683 |
Elena Xoplaki | 53 | 129 | 12097 |
Theodoros Christoudias | 50 | 197 | 7765 |
Dimitris Drikakis | 49 | 286 | 7136 |
George K. Christophides | 48 | 127 | 11099 |