|
|
| Κωδικός Πόρου |
000450538 |
| Τίτλος |
Spatial variability of atmospheric pollutants in the Greater Athens Area using remote sensing techniques |
| Άλλος τίτλος |
Εφαρμογή μεθόδων τηλεπισκόπησης για τη μελέτη της χωροχρονικής κατανομής ατμοσφαιρικών ρύπων στο λεκανοπέδιο Αττικής |
|
Συγγραφέας
|
Γρατσέα, Μυρτώ Σ.
|
|
Σύμβουλος διατριβής
|
Μιχαλόπουλος, Νίκος
|
|
Μέλος κριτικής επιτροπής
|
Γερασόπουλος, Ευάγγελος
Καζατζής, Στέλιος
Richter, Andreas
Βρεκούσης, Μιχάλης
Κανακίδου, Μαρία
Περγαντής, Σπύρος
|
| Περίληψη |
The adverse health effects of urban air pollution on a large proportion of the world population living
in urban envionments, along with its impact on the climate, results to continuous, low-cost air
monitoring and measurement validations being a necessity. This study is focused on the investigation
of the temporal and spatial variation of certain atmospheric pollutants in the greater area of Athens,
mainly using ground-based remote sensing techniques and more particular, the differential optical
absorption spectroscopy (DOAS) technique. The visible and near-UV molecular absorption bands were
used in this study for the DOAS measurements. The atmospheric pollutants that were measured with
a Multi-Axis (MAX) DOAS instrument, are: nitrogen dioxide (NO2), formaldehyde (HCHO) and glyoxal
(CHOCHO) and a detailed temporal and spatial distribution of these trace gases is provided; a
consistent picture of the daily, weekly and seasonal variations is given. Oxygen dimer (O4)
measurements were also used as input information in a retrieval algorithm for the calculation of the
vertical distribution of the aerosol extinction. Lidar and sun-photometer measurements were used for
the evaluation of the retrieved profiles. The MAX-DOAS technique proved to be a reliable method for
measuring aerosol levels and their vertical distribution in the urban environment of Athens, thus, new
perspectives have opened for assessing urban aerosol pollution on a long term-basis in Athens from
continuous and uninterrupted MAX-DOAS measurements. During the present study, the need to
investigate the effect of the economic crisis to the air quality of the city has also risen: the increased
price of heating oil resulted in an increase of biomass combustion for heating purposes, which in turn
has led to severe smog episodes. Therefore, the combined effect of the reduced fossil fuel
consumption and the increasing biomass combustion, as inferred from long-term carbon monoxide
(CO) measurements and in conjuction with black carbon measurements, was examined. The
importance of this study lies on the fact that it quantifies the diachronic changes in air pollution in
Athens and associates it with several socioeconomic factors (e.g. measures, economic crisis,
behavioural changes), while it can also be considered as a reference in the future for assessing and
evaluating expected mitigation measures.
|
| Φυσική περιγραφή |
123 σ. : πίν., σχήμ., εικ. (μερ. εγχρ.) ; 30 εκ. |
| Γλώσσα |
Αγγλικά |
| Θέμα |
Aerosol profiles |
|
Ground-based MAX-DOAS |
|
Urban gaseous pollutants |
|
Αστικοί αέριοι ρύπου |
|
Επίγεια τηλεπισκόπηση MAX-DOAS |
|
Κατακόρυφη κατανομή αιωρούμενων σωματιδίων |
| Ημερομηνία έκδοσης |
2022-11-10 |
| Συλλογή
|
Σχολή/Τμήμα--Σχολή Θετικών και Τεχνολογικών Επιστημών--Τμήμα Χημείας--Διδακτορικές διατριβές
|
|
|
Τύπος Εργασίας--Διδακτορικές διατριβές
|
| Εμφανίσεις |
64 |
Spatial variability of atmospheric pollutants in the Greater Athens Area using remote sensing techniques
