Development of a Polar stratospheric cloud model within the Community Earth System Model using constraints on Type I PSCs from the 2010-2011 Arctic winter

AMS Citation:
Zhu, Y., O. B. Toon, A. Lambert, D. Kinnison, M. Brakebusch, C. Bardeen, M. J. Mills, and J. M. English, 2015: Development of a Polar stratospheric cloud model within the Community Earth System Model using constraints on Type I PSCs from the 2010-2011 Arctic winter. Journal of Advances in Modeling Earth Systems, 7, 551-585, doi:10.1002/2015MS000427.
Date:2015-06-01
Resource Type:article
Title:Development of a Polar stratospheric cloud model within the Community Earth System Model using constraints on Type I PSCs from the 2010-2011 Arctic winter
Abstract: Polar stratospheric clouds (PSCs) are critical elements of Arctic and Antarctic ozone depletion. We establish a PSC microphysics model using coupled chemistry, climate, and microphysics models driven by specific dynamics. We explore the microphysical formation and evolution of STS (Supercooled Ternary Solution) and NAT (Nitric Acid Trihydrate). Characteristics of STS particles dominated by thermodynamics compare well with observations. For example, the mass of STS is close to the thermodynamic equilibrium assumption when the particle surface area is >4 µm²/cm³. We derive a new nucleation rate equation for NAT based on observed denitrification in the 2010-2011 Arctic winter. The homogeneous nucleation scheme leads to supermicron NAT particles as observed. We also find that as the number density of NAT particles increases, the denitrification also increases. Simulations of the PSC lidar backscatter, denitrification, and gas phase species are generally within error bars of the observations. However, the simulations are very sensitive to temperature, which limits our ability to fully constrain some parameters (e.g., denitrification, ozone amount) based on observations.
Peer Review:Refereed
Copyright Information:Copyright 2015 American Geophysical Union.
OpenSky citable URL: ark:/85065/d75t3mph
Publisher's Version: 10.1002/2015MS000427
Author(s):
  • Yunqian Zhu
  • Owen Toon
  • Alyn Lambert
  • Douglas Kinnison - NCAR/UCAR
  • Matthias Brakebusch
  • Charles Bardeen - NCAR/UCAR
  • Michael Mills - NCAR/UCAR
  • Jason English
  • Random Profile

    ASSOC SCIENTIST III

    Recent & Upcoming Visitors