期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 592, 期 -, 页码 115-123出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2017.03.045
关键词
Urban atmosphere; Biomass combustion; Carbon monoxide; Black carbon; Athens; Economic recession
资金
- Excellence Research Program GSRT ARISTOTELIS Environment
- Development Proposals of Research Entities - KRIPIS project
- Greece
- ERDF/EU of NSRF
- O.P
To evaluate the role of biomass burning emissions, and in particular of residentialwood heating, as a result of the economic recession in Greece, carbon monoxide (CO) atmospheric concentrations from five (5) stations of the National Air Pollution Monitoring Network in Athens, spanning the period 2000-2015, in conjunction with black carbon (BC) concentrations from the NOA (National Observatory of Athens) station at Thissio were analysed. The contribution of the different sources to the diurnal cycle of these two pollutants is clear, resulting to amorning peak, mainly due to traffic, and a late evening peak attributed both to fossil fuel (traffic plus central heating) and biomass combustion. Calculatedmorning and evening integrals of CO peaks, for the investigated period, show consistent seasonal modulations, characterised by low summer and high winter values. The summer and winter morning CO peak integrals demonstrate an almost constant decreasing trend of CO concentrations over time (by almost 50% since 2000), attributed to the renewal of passenger car fleet and to reduced anthropogenic activities during the last years. On the other hand, an increase of 23%-78% (depending on the monitoring site) in thewinter evening integrals since 2012, provides evidence of the significant contribution of biomass combustion, which has prevailed over fossil fuel for domestic heating. COemitted bywood burning was found to contribute almost 50% to the total CO emissions during night time (16: 00-5: 00), suggesting that emissions from biomass combustion have gained an increasing role in atmospheric pollution levels in Athens. (C) 2017 Elsevier B. V. All rights reserved.
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