J/ψ Production in pPb Collisions at the LHC Zhang, Hong-Fei Third Military Medical University.
Q. Zhang, A. Setyan, et al UC Davis · Q. Zhang, A. Setyan, et al UC Davis. T0 . T1 . Frequent NPF...
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Chemistry of NPF in mixed biogenic and urban emissions - Observations from CARES Q. Zhang, A. Setyan, et al UC Davis
Transcript of Q. Zhang, A. Setyan, et al UC Davis · Q. Zhang, A. Setyan, et al UC Davis. T0 . T1 . Frequent NPF...
Chemistry of NPF in mixed biogenic and urban emissions - Observations from CARES
Q. Zhang, A. Setyan, et al
UC Davis
T0
T1
Frequent NPF & growth events • Occurred on regional scale,
T0 data from C. Song
• new particles were transported from T0 to T1
• PM grow during transport
Frequent NPF & growth events
4
Τ1 ∆Dm/∆t ~ 5 nm / hr T0 ∆Dm/∆t ~ 7 nm / hr
Interrogate the chemistry of NP growth Growth driven by condensation of organics and sulfate
NPF days Non-NPF days
Growth of New Particles: SOA >> Sulfate
Urban transport, “A”-SOA
Biogenic influenced, “B”-SOA
Growth of New Particles: SOA >> Sulfate
a)
b)
Growth of new particles was mainly driven by “A”-influenced SOA
c)
d)
Urban transport, “A”-SOA
Biogenic influenced, “B”-SOA
T0
T1
Refineries (SO2)
Night time Day time
Setyan et al., ACP, 2012
