Related Experiment Video
Updated: Dec 26, 2025

10:22
Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
Published on: September 7, 2019
8.7K
Changes in black carbon and PM2.5 in Tokyo in 2003-2017
Tatsuhiro Mori1, Sho Ohata2,3, Yu Morino4
1Department of Physics, Faculty of Science Division I, Tokyo University of Science.
Summary
Black carbon (BC) mass concentrations in Tokyo significantly decreased from 2003-2010 due to emission reductions. Local sources remain the primary origin of BC, indicating domestic emission controls are key for further decreases.
Area of Science:
- Environmental Science
- Atmospheric Chemistry
- Public Health
Background:
- Black carbon (BC) particles pose health risks and contribute to atmospheric warming.
- Long-term measurements of BC mass concentration (MBC) are scarce in Japan.
- Urban BC emissions are a focus for reduction efforts.

