Impact of Asian Dust Aerosol and Surface Albedo on Photosynthetically Active Radiation and Surface Radiative Balance in Dryland Ecosystems

Table 2

Comparison of past studies on the aerosol impact on PAR and plant photosynthesis in cloud-free condition.

Study	Data and method	Aerosol (max. 𝜏0.5/𝜔0)^a	Ecosystem (s)	τ ct
Cohan et al. [12]	Crop models	Urban pollution (0.5/0.9)	Crop	~0.6
Niyogi et al. [15]	Eddy fluxes; AERONET	—	Forest, crop, grassland	>0.8
		(0.8/−)
Yamasoe et al. [13]	Eddy fluxes; AERONET	Biomass burning (3.0/0.93)	Tropical rainforest	1.5–2.0
Jing et al. [49]	Eddy fluxes; AERONET	—	Semiarid	Not found, but >1.2
		(1.2/−)	grassland

^aValues in the parentheses are maximum τ and 𝜔₀ at 0.5 μm.