Biennial variability in aerosol optical depth associated with QBO modulated tropical tropopause

被引：9

作者：

Abish, B. ^{[1
]}

Mohanakumar, K. ^{[1
]}

机构：

[1] Cochin Univ Sci & Technol, Dept Atmospher Sci, Cochin 682016, Kerala, India

来源：

ATMOSPHERIC SCIENCE LETTERS | 2012年 / 13卷 / 01期

关键词：

aerosols; QBO; tropical tropopause; MODEL; LAND;

D O I：

10.1002/asl.364

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The role of quasi-biennial oscillation (QBO) in determining the distribution of atmospheric aerosols over the north Indian region has been investigated. The results reveal that aerosol optical depth (AOD) undergoes a biennial variability in response to positive and negative phases of QBO. Large aerosol loading occurring in the pre-monsoon season during westerly phase (positive phase) of QBO is concurrent with a quasi-horizontal advection, diffusion and gravitational sedimentation. Further analysis of tropopause anomalies confirm that warming (cooling) of the tropical tropopause during the positive (negative) phase of QBO is accompanied by an increase (decrease) in AOD over the study region. Copyright (c) 2011 Royal Meteorological Society

引用

页码：61 / 66

页数：6

共 32 条

[1] Role of fine mode aerosols in modulating cloud properties over industrial locations in north India [J].

Abish, B. ;

Mohanakumar, K. .

ANNALES GEOPHYSICAE, 2011, 29 (09) :1605-1612

[2] Aerosol transport over the Gangetic basin during ISRO-GBP land campaign-II [J].

Aloysius, M. ;

Mohan, M. ;

Parameswaran, K. ;

George, S. K. ;

Nair, P. R. .

ANNALES GEOPHYSICAE, 2008, 26 (03) :431-440

[3]

[Anonymous], GEOPHYS RES LETT

[4] AIRS/AMSU/HSB on the aqua mission: Design, science objectives, data products, and processing systems [J].

Aumann, HH ;

Chahine, MT ;

Gautier, C ;

Goldberg, MD ;

Kalnay, E ;

McMillin, LM ;

Revercomb, H ;

Rosenkranz, PW ;

Smith, WL ;

Staelin, DH ;

Strow, LL ;

Susskind, J .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2003, 41 (02) :253-264

[5] The quasi-biennial oscillation [J].

Baldwin, MP ;

Gray, LJ ;

Dunkerton, TJ ;

Hamilton, K ;

Haynes, PH ;

Randel, WJ ;

Holton, JR ;

Alexander, MJ ;

Hirota, I ;

Horinouchi, T ;

Jones, DBA ;

Kinnersley, JS ;

Marquardt, C ;

Sato, K ;

Takahashi, M .

REVIEWS OF GEOPHYSICS, 2001, 39 (02) :179-229

[6] Quasi-biennial oscillations in spectral aerosol optical depth [J].

Beegum, S. Naseema ;

Moorthy, K. Krishna ;

Babu, S. Suresh ;

Reddy, R. Ramakrishna ;

Gopal, K. Rama ;

Ahmed, Y. Nazeer .

ATMOSPHERIC SCIENCE LETTERS, 2009, 10 (04) :279-284

[7]

Collimore CC, 2003, J CLIMATE, V16, P2552, DOI 10.1175/1520-0442(2003)016<2552:OTRBTQ>2.0.CO

[8]

[9] Influence of dust storms on the aerosol optical properties over the Indo-Gangetic basin [J].

Dey, S ;

Tripathi, SN ;

Singh, RP ;

Holben, BN .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2004, 109 (D20) :D202111-13

[10] A decade of change in aerosol properties over the Indian subcontinent [J].

Dey, Sagnik ;

Di Girolamo, Larry .

GEOPHYSICAL RESEARCH LETTERS, 2011, 38

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