A comparative study on black carbon aerosol observations in regions of Beijing and Lhasa in 2006

Runxiang Gao; Shengjie Niu; Hua Zhang; Jun Guo; Dongmei Meng; Jinghui Ma; Jinhu Feng; Yujie Zhang

doi:10.1117/12.763956

9 October 2007 A comparative study on black carbon aerosol observations in regions of Beijing and Lhasa in 2006

Runxiang Gao, Shengjie Niu, Hua Zhang, Jun Guo, Dongmei Meng, Jinghui Ma, Jinhu Feng, Yujie Zhang

Proceedings Volume 6679, Remote Sensing and Modeling of Ecosystems for Sustainability IV; 66791T (2007) https://doi.org/10.1117/12.763956
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

A comparative study is made for black carbon aerosol (BC) in this text based on BC and PM₁₀ observations as well as their air pollution indices during January-December 2006 in Beijing and Lhasa regions. BC concentration is considerably higher in Beijing than in Lhasa because of anthropogenic activities, with an annual mean of 9.3 μg/m³ versus 3 μg/m³ from the standard channel of 880 nm (below is the same). It is higher in winter and lower in summer for both of the regions, with the value in a heating season being more than twice as high as in non-heating season in Beijing area. The highest monthly means of 16.8 μg/m3 vs 5.5 μg/m³ occur in January in Beijing and Lhasa regions, respectively; whereas the lowest values of 4.5 μg/m³ vs 2.2 μg/m³ are in July. The daily higher values of BC in Beijing start from 1600 BST (Beijing standard time) and maintain until 0700 BST of the next day, with keeping lower values during other daytime hours, especially around the noon. The daily maximum and minimum values of 30 μg/m³ and 1.4 μg/m³ happens in December and April in Beijing in 2006, respectively. Generally, BC emissions in Lhasa are much smaller than in Beijing, with relative high values observed in the morning and afternoon; the 2006 daily maximum and minimum of 12.4 μg/m³ and 0.8 μg/m³ appear in the December and the March, respectively. The BC in Lhasa mainly comes from the local emission from vehicles to the atmosphere.

Citation Download Citation

Runxiang Gao, Shengjie Niu, Hua Zhang, Jun Guo, Dongmei Meng, Jinghui Ma, Jinhu Feng, and Yujie Zhang "A comparative study on black carbon aerosol observations in regions of Beijing and Lhasa in 2006", Proc. SPIE 6679, Remote Sensing and Modeling of Ecosystems for Sustainability IV, 66791T (9 October 2007); https://doi.org/10.1117/12.763956

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available