wood_smoke: Wood smoke indicator based on light absorption

In ASRCsoft/atmoschem.datasets: ASRC Atmospheric Chemistry Data Processing

Wood smoke indicator based on light absorption

Description

Derive a semi-quantitative wood smoke indicator from aethalometer measurements using the Delta-C method.

Usage

wood_smoke(bc370, bc880)

Arguments

bc370	370nm estimate of black carbon (UVBC).
bc880	880nm estimate of black carbon.

Details

Wood smoke is estimated using the Delta-C method introduced by \insertCiteallen_evaluation_2004;textualatmoschem.process. Delta-C (sometimes called UVPM) is the difference between aethalometer estimates at 370nm (sometimes called UVBC) and 880nm:

Delta-C = BC_370nm - BC_880nm

While absorption in the range of 880nm is known to identify black carbon, additional material absorbs light in the ultraviolet range measured at 370nm. Specifically, organic compounds associated with wood smoke become more absorbent and are included in the 370nm measurement.

The resulting estimate is "semi-quantitative" in the sense that it doesn't represent the true quantity of wood smoke particles– rather it is roughly proportional to the true value.

\insertNoCite

wang_characterization_2011atmoschem.process \insertNoCitezhang_joint_2017atmoschem.process

Value

Delta-C wood smoke indicator values.

References

\insertAllCited

Examples

wood_smoke(1000, 800)

ASRCsoft/atmoschem.datasets documentation built on Feb. 15, 2023, 9:26 a.m.