Προσωπικό Σχετικά με το LAP Νέα-Ανακοινώσεις Προτενόμενες διασυνδέσεις Επικοινωνήστε με το LAP Αρχική Σελίδα
education projects groups equipment services
Characterization of the aerosol type using simultaneous measurements of the lidar ratio and estimations of the single scattering albedo
Amiridis, V., Balis, D., Giannakaki, E., Kazadzis, S., Arola, A., Gerasopoulos, E.
[περίληψη]
Lidar measurements of the vertical distribution of the aerosol extinction and backscatter coefficient and the corresponding extinction to backscatter ratio (so-called lidar ratio) at 355. nm have been performed at Thessaloniki, Greece using a Raman lidar system in the frame of the EARLINET for the period 2001-2005. Coincident spectral UV irradiance measurements, total ozone observations and aerosol optical depth estimates were available from a double Brewer spectroradiometer. The retrieval of single scattering albedo employed the Brewer global irradiance measurements and radiative transfer modeling. Vertically averaged values of the lidar ratio ranged from a minimum of 16. sr to a maximum value of 90. sr, while the effective single scattering albedo ranged from 0.78 to 1.00. The mean value of the lidar ratio for the dataset under study was 45.5 ± 21.0. sr while the average value of the single scattering albedo was 0.94 ± 0.05. For the majority of our measurements (80%) the single scattering albedo found to be greater than 0.90. Using additional information from backward trajectory calculations and lidar-derived free tropospheric contribution of aerosols in the columnar aerosol optical depth, it is shown that the combined use of the directly measured lidar ratio, and the indirectly estimated single scattering albedo, leads to a better characterization of the aerosol type probed.
[keywords]
Aerosol lidar; Single scattering albedo
Atmospheric Research, Volume 101, Issue 1-2, July 2011, Pages 46-53, 2011
 http://www.sciencedirect.com/science/article/pii/S0169809511000159
επιστροφή στη λίστα των δημοσιεύσεων
  ΑΝΑΖΗΤΗΣΗ
 
Νεα Εργα Ερευνα
Περιβαλλοντικές Προγνώσεις
  LAP Έργα
APICE
GEMS project
MACC project
PASODOBLE
QASUME
UV NET
EUMETSAT
OMI-VAL
PHAETHON
Ε.Δ.Η.Ε.
PHOENICS
Hrakleitos
ΠΥΘΑΓΟΡΑΣ
ΠΡΟ.ΤΕ.ΠΕ.
SCOUT-O3
  LAP Δραστηριότητες
ΔΕΙΚΤΗΣ ΥΠΕΡΙΩΔΟΥΣ ΑΚΤΙΝΟΒΟΛΙΑΣ
ΔΙΚΤΥΟ ΜΕΤΡΗΣΗΣ UV
ΟΜΑΔΑ ΟΡΙΑΚΟΥ ΣΤΡΩΜΑΤΟΣ
ΠΕΡΙΒΑΛΛΟΝΤΙΚΕΣ ΠΡΟΓΝΩΣΕΙΣ
ΧΑΡΤΕΣ ΟΖΟΝΤΟΣ
  Φιλοξενία
ΒΑΛΚΑΝΙΚΗ ΕΝΩΣΗ ΦΥΣΙΚΩΝ
ΜΑΡ.ΚΑΝΑΓΚ.ΙΔΡΥΜΑ
ΤΜΗΜΑ ΜΕΤΑΠΤΥΧΙΑΚΩΝ ΣΠΟΥΔΩΝ


English version


Εργαστήριο Φυσικής της Ατμόσφαιρας - Φυσικό Τμήμα, Α.Π.Θ..
Γραμματεία: τηλ. 2310 998156 fax. 2310 998090 e-mail: lap@physics.auth.gr


DOTSOFT logo
.:: Website by DOTSOFT ::.