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.
Topics: Aerosol, Environmental science, Lattice QCD, Geology, Nucleon
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors examined the current National Food Safety System (NFSS) of Cyprus in contrast to NFSS of European Union (EU) countries and the EU central level, and developed a comprehensive proposal for the establishment of a single and independent NFSA in Cyprus based on EU experiences and good practices in an effort to improve the efficiency and effectiveness of the current system.
11 citations
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TL;DR: In this paper, the Kilmore East fire in Victoria, Australia, which burnt approximately 100,000ha over a 12-hour period, was estimated to have emitted 10,175 Gigagrams (Gg) of CO2 equivalent (CO2-e) emissions.
Abstract: Estimates of greenhouse gases and particulate emissions are made with a high spatiotemporal resolution from the Kilmore East fire in Victoria, Australia, which burnt approximately 100,000 ha over a 12 h period. Altogether, 10,175 Gigagrams (Gg) of CO2 equivalent (CO2-e) emissions occurred, with CO2 (∼68%) being the dominant chemical species emitted followed by CH4 (∼17%) and black carbon (BC) (∼15%). About 63% of total CO2-e emissions were estimated to be from coarse woody debris, 22% were from surface fuels, 7% from bark, 6% from elevated fuels, and less than 2% from tree crown consumption. To assess the quality of our emissions estimates, we compared our results with previous estimates which used the Global Fire Emissions Database version 3.1 (GFEDv3.1) and the Fire INventory from the National Center for Atmospheric Research version 1.0 (FINNv1), as well as Australia's National Inventory System (and its revision). The uncertainty in emission estimates was addressed using truncated Monte Carlo analysis, which derived a probability density function for total emissions from the uncertainties in each input. The distribution of emission estimates from Monte Carlo analysis was lognormal with a mean of 10,355 Gigagrams (Gg) and a ±1 standard deviation (σ) uncertainty range of 7260–13,450 Gg. Results were in good agreement with the global data sets (when using the same burnt area), although they predicted lower total emissions by 15–37% due to underestimating fuel consumed. Emissions estimates can be improved by obtaining better estimates of fuel consumed and BC emission factors. Overall, this study presents a methodological template for high-resolution emissions accounting and its uncertainty, enabling a step toward process-based emissions accounting to be achieved.
11 citations
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30 Nov 2021
TL;DR: In this paper, the global distributions of secondary organic aerosol phase state and mixing times within SOA are used to predict the impact of SOA on air quality, climate, and atmospheric conditions.
Abstract: Information on the global distributions of secondary organic aerosol (SOA) phase state and mixing times within SOA is needed to predict the impact of SOA on air quality, climate, and atmospheric ch...
11 citations
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TL;DR: In this paper, the results of the AQABA campaign in the Arabian Basin were analyzed using a proton transfer reaction mass-spectrometer (PTR-ToF-MS).
Abstract: . Volatile organic compounds (VOCs) were measured around the Arabian Peninsula using a research vessel during the AQABA campaign (Air Quality and Climate
Change in the Arabian Basin) from June to August 2017. In this study we
examine carbonyl compounds, measured by a proton transfer reaction mass
spectrometer (PTR-ToF-MS), and present both a regional concentration
distribution and a budget assessment for these key atmospheric species.
Among the aliphatic carbonyls, acetone had the highest mixing ratios in most
of the regions traversed, varying from 0.43 ppb over the Arabian Sea to 4.5 ppb over the Arabian Gulf, followed by formaldehyde (measured by a Hantzsch monitor, 0.82 ppb over the Arabian Sea and 3.8 ppb over the Arabian Gulf)
and acetaldehyde (0.13 ppb over the Arabian Sea and 1.7 ppb over the Arabian
Gulf). Unsaturated carbonyls (C 4 –C 9 ) varied from 10 to 700 ppt during the
campaign and followed similar regional mixing ratio dependence to aliphatic carbonyls, which were identified as oxidation products of cycloalkanes over
polluted areas. We compared the measurements of acetaldehyde, acetone, and methyl ethyl ketone to global chemistry-transport model (ECHAM5/MESSy Atmospheric Chemistry – EMAC) results. A
significant discrepancy was found for acetaldehyde, with the model
underestimating the measured acetaldehyde mixing ratio by up to an order of
magnitude. Implementing a photolytically driven marine source of
acetaldehyde significantly improved the agreement between measurements and
model, particularly over the remote regions (e.g. Arabian Sea). However, the
newly introduced acetaldehyde source was still insufficient to describe the
observations over the most polluted regions (Arabian Gulf and Suez), where
model underestimation of primary emissions and biomass burning events are
possible reasons.
11 citations
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TL;DR: In this article, the authors present the first incorporation of the Common Representative Intermediates version 2.2 tropospheric chemistry mechanism, CRI v2.2, into the global chemistry-climate United Kingdom Chemistry and Aerosols (UKCA) model to give the CRI-Strat-2 fixmemechanism.
Abstract: . We present the first incorporation of the Common Representative
Intermediates version 2.2 tropospheric chemistry mechanism, CRI v2.2,
combined with stratospheric chemistry, into the global chemistry–climate
United Kingdom Chemistry and Aerosols (UKCA) model to give the CRI-Strat 2
mechanism. A rigorous comparison of CRI-Strat 2 with the earlier version,
CRI-Strat, is performed in UKCA in addition to an evaluation of three
mechanisms, CRI-Strat 2, CRI-Strat and the standard UKCA chemical mechanism,
StratTrop v1.0, against a wide array of surface and airborne chemical data. CRI-Strat 2 comprises a state-of-the-art isoprene scheme, optimized against
the Master Chemical Mechanism v3.3.1, which includes isoprene peroxy radical isomerization,
HO x recycling through the addition of photolabile hydroperoxy aldehydes
(HPALDs), and isoprene epoxy diol (IEPOX) formation. CRI-Strat 2 also features updates to several
rate constants for the inorganic chemistry, including the reactions of
inorganic nitrogen and O(1D) . The update to the isoprene chemistry in CRI-Strat 2 increases OH over the
lowest 500 m in tropical forested regions by 30 % –50 % relative to
CRI-Strat, leading to an improvement in model–observation comparisons for
surface OH and isoprene relative to CRI-Strat and StratTrop. Enhanced
oxidants also cause a 25 % reduction in isoprene burden and an increase in
oxidation fluxes of isoprene and other biogenic volatile organic compounds
(BVOCs) at low altitudes with likely impacts on subsequent aerosol formation, atmospheric
lifetime, and climate. By contrast, updates to the rate constants of O(1D) with its main
reactants relative to CRI-Strat reduces OH in much of the free troposphere,
producing a 2 % increase in the methane lifetime, and increases the
tropospheric ozone burden by 8 % , primarily from reduced loss via
O(1D)+H2O . The changes to inorganic nitrogen reaction rate
constants increase the NO x burden by 4 % and shift the distribution
of nitrated species closer to that simulated by StratTrop. CRI-Strat 2 is suitable for multi-decadal model integrations and the
improved representation of isoprene chemistry provides an opportunity to
explore the consequences of HO x recycling in the United Kingdom Earth
System Model (UKESM1). This new mechanism will enable a re-evaluation of the
impact of BVOCs on the chemical composition of the atmosphere and further probe
the feedback between the biosphere and the climate.
11 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 |