Specifications for black (carbon) pigments for paints

2015 ◽  
Keyword(s):  
Black Carbon

Numerical analysis on the reduction of the inflow of black carbon from a road into an elementary school by a noise barrier

2016 ◽  
Vol 15 (4) ◽  
pp. 329-336 ◽  
Author(s):  
Gihoon Kim ◽  
◽  
Seongmin Jo ◽  
Hohyun Kim ◽  
Seungdo Yu ◽  
...  
Keyword(s):  
Elementary School ◽  
Numerical Analysis ◽  
Black Carbon ◽  
Noise Barrier

PROSPECT OF RESEARCH ON ARCTIC BLACK CARBON AEROSOL

2010 ◽  
Vol 22 (1) ◽  
pp. 56-68 ◽  
Author(s):  
Jianqiong Zhan ◽  
Liqi Chen ◽  
Yuanhui Zhang ◽  
Xulin Yang ◽  
Wei Li
Keyword(s):  
Black Carbon ◽  
Black Carbon Aerosol

A REVIEW OF BLACK CARBON STUDY: HISTORY AND CURRENT STATUS

2011 ◽  
Vol 31 (1) ◽  
pp. 143-156 ◽  
Author(s):  
Yan MU ◽  
Xiaoguang QIN ◽  
Jiaqi LIU ◽  
Zhiqiang YIN
Keyword(s):  
Black Carbon ◽  
Current Status

scholarly journals Regional variability in black carbon and carbon monoxide ratio from long-term observations over East Asia: assessment of representativeness for black carbon (BC) and carbon monoxide (CO) emission inventories

2020 ◽  
Vol 20 (1) ◽  
pp. 83-98 ◽  
Author(s):  
Yongjoo Choi ◽  
Yugo Kanaya ◽  
Seung-Myung Park ◽  
Atsushi Matsuki ◽  
Yasuhiro Sadanaga ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
South Korea ◽  
East Asia ◽  
Black Carbon ◽  
North Korea ◽  
Northeast China ◽  
Emission Inventory ◽  
East China ◽  
Co Emission

Abstract. The black carbon (BC) and carbon monoxide (CO) emission ratios were estimated and compiled from long-term, harmonized observations of the ΔBC∕ΔCO ratios under conditions unaffected by wet deposition at four sites in East Asia, including two sites in South Korea (Baengnyeong and Gosan) and two sites in Japan (Noto and Fukuoka). Extended spatio-temporal coverage enabled estimation of the full seasonality and elucidation of the emission ratio in North Korea for the first time. The estimated ratios were used to validate the Regional Emission inventory in ASia (REAS) version 2.1 based on six study domains (“East China”, “North China”, “Northeast China”, South Korea, North Korea, and Japan). We found that the ΔBC∕ΔCO ratios from four sites converged into a narrow range (6.2–7.9 ng m−3 ppb−1), suggesting consistency in the results from independent observations and similarity in source profiles over the regions. The BC∕CO ratios from the REAS emission inventory (7.7 ng m−3 ppb−1 for East China – 23.2 ng m−3 ppb−1 for South Korea) were overestimated by factors of 1.1 for East China to 3.0 for South Korea, whereas the ratio for North Korea (3.7 ng m−3 ppb−1 from REAS) was underestimated by a factor of 2.0, most likely due to inaccurate emissions from the road transportation sector. Seasonal variation in the BC∕CO ratio from REAS was found to be the highest in winter (China and North Korea) or summer (South Korea and Japan), whereas the measured ΔBC∕ΔCO ratio was the highest in spring in all source regions, indicating the need for further characterization of the seasonality when creating a bottom-up emission inventory. At levels of administrative districts, overestimation in Seoul, the southwestern regions of South Korea, and Northeast China was noticeable, and underestimation was mainly observed in the western regions in North Korea, including Pyongyang. These diagnoses are useful for identifying regions where revisions in the inventory are necessary, providing guidance for the refinement of BC and CO emission rate estimates over East Asia.

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