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Joy Romanski Anastasia Romanou Michael Bauer George Tselioudis 《Regional Environmental Change》2014,14(5):1713-1723
We analyze daily wintertime cyclone variability in the central and eastern Mediterranean during 1958–2001 and identify four distinct “cyclone states,” corresponding to the presence or absence of cyclones in each basin. Each cyclone state is associated with wind flows that induce characteristic patterns of cooling via turbulent (sensible and latent) heat fluxes in the eastern Mediterranean basin and Aegean Sea. The relative frequency of occurrence of each state determines the heat loss from the Aegean Sea during that winter, with largest heat losses occurring when there is a storm in the eastern but not central Mediterranean (eNOTc) and the smallest occurring when there is a storm in the central but not eastern Mediterranean (cNOTe). Time series of daily cyclone states for each winter allow us to infer Aegean Sea cooling for winters prior to 1985, the earliest year for which we have daily heat flux observations. We show that cyclone states conducive to Aegean Sea convection occurred in 1991/1992 and 1992/1993, the winters during which deepwater formation was observed in the Aegean Sea, and also during the mid-1970s and the winters of 1963/1964 and 1968/1969. We find that the eNOTc cyclone state is anticorrelated with the North Atlantic Oscillation (NAO) prior to 1977/1978. After 1977/1978, the cNOTe state is anticorrelated with both the NAO and the North Caspian Pattern, showing that the area of influence of large-scale atmospheric teleconnections on regional cyclone activity shifted from the eastern to the central Mediterranean during the late 1970s. A trend toward more frequent occurrence of the positive phase of the NAO produced less frequent cNOTe states since the late 1970s, increasing the number of days with strong cooling of the Aegean Sea surface waters. 相似文献
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Ulas Im Kostandinos Markakis Alper Unal Tayfun Kindap Anastasia Poupkou Selahattin Incecik Orhan Yenigun Dimitros Melas Christina Theodosi Nikos Mihalopoulos 《Atmospheric environment (Oxford, England : 1994)》2010,44(26):3085-3094
High winter-time PM10, sulfate, nitrate and ammonium levels in Istanbul were investigated using a high resolution WRF/CMAQ mesoscale model system. A model-ready anthropogenic emission inventory on 2 km spatial resolution was developed for the area and the present study is the first attempt to test these emissions. The results suggested that the system was capable of producing the magnitudes. PM10 levels calculated by the model underestimated the observations with an average of 10 per cent at Bogazici University sampling station, whereas an overestimation of 12 per cent is calculated for all stations. High uncertainties, particularly in traffic and coal combustion, led to over estimations around emission hot spots. Base case results together with the sensitivity studies pointed significant contribution of local sources, pointing to the need of control strategies focusing on primary particulate emissions. 相似文献
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Memetova Anastasia Tyagi Inderjeet Suhas Singh Pratibha Mkrtchyan Elina Burakova Irina Burakov Alexander Memetov Nariman Gerasimova Alena Shigabaeva Gulnara Galunin Evgeny Kumar Ajay 《Environmental science and pollution research international》2023,30(9):22617-22630
Environmental Science and Pollution Research - Carbon porous materials obtained through KOH activation of a furfural?+?hydroquinone?+?urotropine mixture were applied as... 相似文献
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The main objective of this study was to determine the effects of long-term abiotic processes during aging of organic pollutants in soil on their microbial degradability and formation of non-extractable residues. The specific aims of our study were to investigate how the fate of p353-nonylphenol (NP) and phenanthrene (Phe) in soils might be affected by: (i) saturation of soil by cations with different valency (Na+, Ca2+ or Al3+), (ii) addition of organic substrate (wood flour) during incubation period and (iii) different soil moisture levels. 相似文献
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Lianou M Chalbot MC Kavouras IG Kotronarou A Karakatsani A Analytis A Katsouyanni K Puustinen A Hameri K Vallius M Pekkanen J Meddings C Harrison RM Ayres JG ten Brick H Kos G Meliefste K de Hartog J Hoek G 《Environmental science and pollution research international》2011,18(7):1202-1212