Abstract

The role of aerosols in climate and climate change is one of the factors that is least understood at the present. Aerosols’ direct interaction with solar radiation is a well understood mechanism that affects Earth’s net radiative forcing. However, quantifying its magnitude is more problematic because of the temporal and spatial variability of aerosol particles. To enhance our understanding of the radiative effects of aerosols on the global climate, Singapore has joined the AERONET (Aerosol Robotic Network) worldwide network by contributing ground-based direct Sun measurements performed by means of a multiwavelength Sun-photometer instrument. Data are collected on an hourly basis, then are uploaded to be fully screened and quality assured by AERONET. We use a one year data record (level 1.5/2.0) of measured columnar atmospheric optical depth, spanning from November 2006 to October 2007, to study the monthly and seasonal variability of the aerosol optical depth and the Ångström exponent. We performed independent retrievals of these parameters (aerosol optical depth and Ångström exponent) by using the photometer’s six available bands covering the near-UV to near-IR (380–1080nm). As a validation, our independent retrievals were compared with AERONET 1.5/2.0 level direct Sun product.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Empirical correction of multifilter rotating shadowband radiometer (MFRSR) aerosol optical depths for the aerosol forward scattering and development of a long-term integrated MFRSR-Cimel dataset at Lampedusa

Alcide di Sarra, Damiano Sferlazzo, Daniela Meloni, Fabrizio Anello, Carlo Bommarito, Stefano Corradini, Lorenzo De Silvestri, Tatiana Di Iorio, Francesco Monteleone, Giandomenico Pace, Salvatore Piacentino, and Sergio Pugnaghi
Appl. Opt. 54(10) 2725-2737 (2015)

Aerosol optical properties and precipitable water vapor column in the atmosphere of Norway

Dennis Muyimbwa, Øyvind Frette, Jakob J. Stamnes, Taddeo Ssenyonga, Yi-Chun Chen, and Børge Hamre
Appl. Opt. 54(6) 1505-1514 (2015)

Long-term (2007–2013) analysis of aerosol optical properties over four locations in the Indo-Gangetic plains

Humera Bibi, Khan Alam, Thomas Blaschke, Samina Bibi, and Muhammad Jawed Iqbal
Appl. Opt. 55(23) 6199-6211 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription