World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Physical Properties and Concentration of Aerosol Particles Over the Amazon Tropical Forest During Background and Biomass Burning Conditions : Volume 3, Issue 2 (13/02/2003)

By Guyon, P.

Click here to view

Book Id: WPLBN0003997358
Format Type: PDF Article :
File Size: Pages 48
Reproduction Date: 2015

Title: Physical Properties and Concentration of Aerosol Particles Over the Amazon Tropical Forest During Background and Biomass Burning Conditions : Volume 3, Issue 2 (13/02/2003)  
Author: Guyon, P.
Volume: Vol. 3, Issue 2
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2003
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Boucher, O., Mayol-Bracero, O. L., Beck, J., Andreae, M. O., Roberts, G. C., Guyon, P.,...Graham, B. (2003). Physical Properties and Concentration of Aerosol Particles Over the Amazon Tropical Forest During Background and Biomass Burning Conditions : Volume 3, Issue 2 (13/02/2003). Retrieved from http://www.ebooklibrary.org/


Description
Description: Max Planck Institute for Chemistry, Department of Biogeochemistry, Mainz, Germany. We investigated the size distribution, scattering and absorption properties of Amazonian aerosols and the optical thickness of the aerosol layer under the pristine background conditions typical of the wet season, as well as during the biomass-burning-influenced dry season. The measurements were made during two campaigns in 1999 as part of the European contribution to the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA-EUSTACH). In moving from the wet to the dry season, median particle numbers were observed to increase from values comparable to those of the remote marine boundary layer (~400cm−3) to values more commonly associated with urban smog (~4000 cm−3), due to a massive injection of submicron smoke particles. Aerosol optical depths at 500\,nm increased from 0.05 to 0.8 on average, reaching a value of 2 during the dry season. Scattering and absorption coefficients, measured at 550 nm, showed a concomitant increase from average values of 6.8 and 0.4 Mm−1 to values of 91 and 10 Mm−1, respectively, corresponding to an estimated decrease in single-scattering albedo from ca. 0.97 to 0.91. The roughly tenfold increase in many of the measured parameters attests to the dramatic effect that extensive seasonal biomass burning (deforestation, pasture cleaning) is having on the composition and properties of aerosols over Amazonia. The potential exists for these changes to impact on regional and global climate through changes to the extinction of solar radiation as well as the alteration of cloud properties.

Summary
Physical properties and concentration of aerosol particles over the Amazon tropical forest during background and biomass burning conditions

 

Click To View

Additional Books


  • Atmospheric Measurement of Point Source ... (by )
  • Evaluation of Satellite-derived Hcho Usi... (by )
  • Aerosol Physical and Optical Properties ... (by )
  • Day-time Concentrations of Biogenic Vola... (by )
  • Influence of Altitude on Ozone Levels an... (by )
  • Seasonal Variations of Aerosol Size Dist... (by )
  • In Situ Measurements of Molecular Iodine... (by )
  • Interpreting the Variability of Space-bo... (by )
  • Long Term Particle Size Distribution Mea... (by )
  • Modeling Regional Aerosol and Aerosol Pr... (by )
  • Past and Future Simulations of No2 from ... (by )
  • Chemical Characteristics of Inorganic Am... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.