Annual cycle in co-located in situ, total-column, and height-resolved aerosol observations in the Po Valley (Italy): Implications for ground-level particulate matter mass concentration estimation from remote sensing

被引:35
作者
Barnaba, F. [1 ]
Putaud, J. P. [1 ]
Gruening, C. [1 ]
dell'Acqua, A. [1 ]
Dos Santos, S. [1 ]
机构
[1] European Commiss Joint Res Ctr, Inst Environm & Sustainabil, I-21027 Ispra, Italy
关键词
AIR-QUALITY ASSESSMENT; TO-BACKSCATTER RATIO; OPTICAL DEPTH; ATMOSPHERIC AEROSOLS; LIGHT-ABSORPTION; LIDAR; EXTINCTION; MODIS; POLLUTION; PARTICLES;
D O I
10.1029/2009JD013002
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Remote sensing represents a prospective tool to complement in situ measurements for monitoring particulate matter air pollution. The remotely sensed aerosol metric which is generally related to the in situ measured particulate matter mass concentration (PM) is the aerosol optical thickness (AOT), the vertically integrated aerosol extinction that optically quantifies the aerosol load in the whole atmospheric column. Annual variations in AOT and PM can follow very different patterns, indicating that the AOT-to-PM conversion is not straightforward. In the Po Valley, northern Italy, AOT and PM seasonal cycles exhibit a marked phase shift. Making use of aerosol extinction vertical profiles derived from continuous aerosol lidar measurements, we further searched through the AOT-to-PM10 relationship in this region. On the basis of a 2-year (2006-2007) multisensor database, including remote sensing observations from ground and space and in situ measurements, this study: (1) discloses for the first time the height-resolved seasonal variability of the aerosol optical properties in the Po Valley, (2) demonstrates and quantifies the crucial role of the aerosol vertical distribution in the AOT-to-PM relationship in this region, (3) suggests a methodology to rescale AOT to ground-level aerosol extinction values that correlate with PM concentration and from which PM10 annual average and exceedances frequency of daily limit value can be retrieved within a few percentage points, and (4) highlights that the hygroscopic growth of the particles in the atmosphere is a critical factor for comparing in situ-measured to remotely sensed aerosol properties.
引用
收藏
页数:22
相关论文
共 80 条
[1]  
Ackermann J, 1998, J ATMOS OCEAN TECH, V15, P1043, DOI 10.1175/1520-0426(1998)015<1043:TETBRO>2.0.CO
[2]  
2
[3]   Improving national air quality forecasts with satellite aerosol observations [J].
Al-Saadi, J ;
Szykman, J ;
Pierce, RB ;
Kittaka, C ;
Neil, D ;
Chu, DA ;
Remer, L ;
Gumley, L ;
Prins, E ;
Weinstock, L ;
MacDonald, C ;
Wayland, R ;
Dimmick, F ;
Fishman, J .
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY, 2005, 86 (09) :1249-+
[4]   In situ measurement of the aerosol extinction-to-backscatter ratio at a polluted continental site [J].
Anderson, TL ;
Masonis, SJ ;
Covert, DS ;
Charlson, RJ ;
Rood, MJ .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2000, 105 (D22) :26907-26915
[5]   Determining aerosol radiative properties using the TSI 3563 integrating nephelometer [J].
Anderson, TL ;
Ogren, JA .
AEROSOL SCIENCE AND TECHNOLOGY, 1998, 29 (01) :57-69
[6]   STUDY OF ATMOSPHERIC AEROSOLS AND MIXING LAYER BY LIDAR [J].
Angelini, Federico ;
Barnaba, Francesca ;
Landi, Tony Christian ;
Caporaso, Luca ;
Gobbi, Gian Paolo .
RADIATION PROTECTION DOSIMETRY, 2009, 137 (3-4) :275-279
[7]   Towards aerosol light-absorption measurements with a 7-wavelength Aethalometer:: Evaluation with a photoacoustic instrument and 3-wavelength nephelometer [J].
Arnott, WP ;
Hamasha, K ;
Moosmüller, H ;
Sheridan, PJ ;
Ogren, JA .
AEROSOL SCIENCE AND TECHNOLOGY, 2005, 39 (01) :17-29
[8]   Aerosol stratification, optical properties and radiative forcing in Venice (Italy) during ADRIEX [J].
Barnaba, F. ;
Gobbi, G. P. ;
de Leeuw, G. .
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 2007, 133 (SUPPL. 1) :47-60
[9]   Aerosol seasonal variability over the Mediterranean region and relative impact of maritime, continental and Saharan dust particles over the basin from MODIS data in the year 2001 [J].
Barnaba, F ;
Gobbi, GP .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2004, 4 :2367-2391
[10]  
Barnaba F, 2004, J ATMOS OCEAN TECH, V21, P428, DOI 10.1175/1520-0426(2004)021<0428:MTAEVB>2.0.CO