High contributions of fossil fuel sources to char-EC/soot-EC at a high-altitude site: Radiative effects and Transport pathway
Creators
- 1. State Key Laboratory of Loess, Institute of Earth Environment, Chinese Academy of Sciences
- 2. Institute for Environmental and Climate Research, Jinan University
- 3. Istituto di Metodologie per l'Analisi Ambientale, Consiglio Nazionale delle Ricerche, Ctr.da S
- 4. Institute of Atmospheric Physics, Chinese Academy of Sciences
Description
Element carbon (EC) containing aerosols can lead atmosphere warming due to its strong light absorption ability. EC can be classified into char-EC and soot-EC in the atmosphere, which have distinct physical and chemical properties. Studies have built fundamental profiles of char-EC and soot-EC in terms of chemical and physical properties, but its optical properties and radiative forcing effects have been reported rarely. This study found that the mean MAC of soot-EC was much higher than that of char-EC. Soot-EC has a greater potential (2.8 times higher) to break the radiation balance. Although soot-EC has a stronger ability, char-EC plays more important role in the direct radiative effect of EC due to large mass concentrations. This study highlights the differences in MAC and DRE between soot-EC and char-EC, and implies that uncertainty of refining the current “one-size-fits-all” parameters for EC-containing particles, if the fundamental difference in the optical properties of EC is disregarded.
Files
Files
(47.3 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:04c73493d044f31f76d5fc067fb32df0
|
47.3 kB | Download |