FN Archimer Export Format
PT J
TI Marine and biomass burning aerosols in the southern Indian Ocean: Retrieval of aerosol optical properties from shipborne lidar and Sun photometer measurements
BT 
AF DUFLOT, V.
   ROYER, P.
   CHAZETTE, P.
   BARAY, J-L.
   COURCOUX, Y.
   DELMAS, R.
AS 1:1;2:2,3;3:2;4:1;5:1;6:1;
FF 1:;2:;3:;4:;5:;6:;
C1 Univ Reunion, Lab Atmosphere & Cyclones, UMR CNRS Meteo France 8105, F-97715 St Denis, Reunion.
   UMR CEA CNRS UVSQ 8212, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France.
   LEOSPHERE, Paris, France.
C2 UNIV REUNION, FRANCE
   IPSL, FRANCE
   LEOSPHERE, FRANCE
IF 3.021
TC 21
UR https://archimer.ifremer.fr/doc/00092/20307/17962.pdf
LA English
DT Article
CR ET LIDAR
BO Marion Dufresne
AB We document aerosol extinction properties in the southern Indian Ocean. A unique data set of shipborne measurements has been collected with a dual Rayleigh-Mie lidar aboard the research vessel Marion Dufresne during two campaigns: one around Madagascar during the Southern Hemisphere late summer and one close to the Kerguelen Islands during the biomass burning (BB) season. During this latter, a layer containing a mix of BB and marine aerosols extending up to similar to 3 km above mean sea level (amsl) has been observed from [31 degrees S, 69 degrees E] to [24 degrees S, 59 degrees E]. Both vertical structure and aerosol optical properties have been retrieved from the inversion of the lidar signals. Sun photometer-derived aerosol optical thickness (AOT) at 355 nm is used to constrain the lidar inversion. We obtain a mean integrated value of backscatter-to-extinction ratio (BER) (extinction-to-backscatter ratio, or so-called lidar ratio, LR) of 0.039 +/- 0.009 sr(-1) (26 +/- 6 sr) and 0.021 +/- 0.006 sr(-1) (48 +/- 12 sr) for the marine aerosols layer, and for the mixing between BB and marine aerosols with an uncertainty of 0.009 sr-1 (6 sr) and 0.004 sr(-1) (9 sr), respectively. Lidar calibration is used to inverse data without any simultaneous Sun photometer measurements (as nighttime data), and the temporal evolution of the optical properties and vertical extension of the BB aerosol plume is documented. The presence of BB aerosols is in agreement with Lagrangian model GIRAFE v3 (reGIonal ReAl time Fire plumEs) simulations, which show the South American and Southern African BB origin of the encountered aerosol layer.
PY 2011
PD SEP
SO Journal Of Geophysical Research-atmospheres
SN 0148-0227
PU Amer Geophysical Union
VL 116
IS D18208
UT 000295536600001
BP 1
EP 15
DI 10.1029/2011JD015839
ID 20307
ER

EF