Publication Abstracts

Li et al. 2023, in press

Li, X.-Y., H. Wang, J. Chen, S. Endo, S. Kirschler, C. Voigt, E. Crosbie, L.D. Ziemba, D. Painemal, B. Cairns, J.W. Hair, A.F. Corral, C. Robinson, H. Dadashazar, A. Sorooshian, G. Chen, R.A. Ferrare, M.M. Kleb, H. Liu, R. Moore, A.J. Scarino, M. Shook, T.J. Shingler, K.L. Thornhill, F. Tornow, H. Xiao, and X. Zeng, 2023: Large-eddy simulations of marine boundary layer clouds associated with cold-air outbreaks during the ACTIVATE Campaign. Part II: Aerosol-meteorology-cloud interaction. J. Atmos. Sci., in press, doi:10.1175/JAS-D-21-0324.1.

Aerosol effects on micro-/macro-physical properties of marine stratocumulus clouds over the Western North Atlantic Ocean (WNAO) are investigated using in-situ measurements and large-eddy simulations (LES) for two cold-air outbreak (CAO) cases (28 February and 1 March, 2020) during the Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment (ACTIVATE). The LES is able to reproduce the vertical profiles of liquid water content (LWC), effective radius reff and cloud droplet number concentration Nc from fast cloud droplet probe (FCDP) in-situ measurements for both cases. Furthermore, we show that aerosols affect cloud properties (Nc, reff, and LWC) via the prescribed bulk hygroscopicity of aerosols (k̅) and aerosol size distribution characteristics. Nc, reff, and liquid water path (LWP) are positively correlated to k̅ and aerosol number concentration (Na) while cloud fractional cover (CFC) is insensitive to k̅ and aerosol size distributions for the two cases. The realistic changes to aerosol size distribution (number concentration, width, and the geometrical diameter) with the same meteorology state allow us to investigate aerosol effects on cloud properties without meteorological feedback. We also use the LES results to evaluate cloud properties from two reanalysis products, ERA5 and MERRA-2. Compared to LES, the ERA5 reanalysis is able to capture the time evolution of LWP and total cloud coverage within the study domain during both CAO cases while MERRA-2 underestimates them.

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BibTeX Citation

@unpublished{li07210x,
  author={Li, X.-Y. and Wang, H. and Chen, J. and Endo, S. and Kirschler, S. and Voigt, C. and Crosbie, E. and Ziemba, L. D. and Painemal, D. and Cairns, B. and Hair, J. W. and Corral, A. F. and Robinson, C. and Dadashazar, H. and Sorooshian, A. and Chen, G. and Ferrare, R. A. and Kleb, M. M. and Liu, H. and Moore, R. and Scarino, A. J. and Shook, M. and Shingler, T. J. and Thornhill, K. L. and Tornow, F. and Xiao, H. and Zeng, X.},
  title={Large-eddy simulations of marine boundary layer clouds associated with cold-air outbreaks during the ACTIVATE Campaign. Part II: Aerosol-meteorology-cloud interaction},
  year={2023},
  journal={J. Atmos. Sci.},
  doi={10.1175/JAS-D-21-0324.1},
  note={Manuscript accepted for publication}
}

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RIS Citation

TY  - INPR
ID  - li07210x
AU  - Li, X.-Y.
AU  - Wang, H.
AU  - Chen, J.
AU  - Endo, S.
AU  - Kirschler, S.
AU  - Voigt, C.
AU  - Crosbie, E.
AU  - Ziemba, L. D.
AU  - Painemal, D.
AU  - Cairns, B.
AU  - Hair, J. W.
AU  - Corral, A. F.
AU  - Robinson, C.
AU  - Dadashazar, H.
AU  - Sorooshian, A.
AU  - Chen, G.
AU  - Ferrare, R. A.
AU  - Kleb, M. M.
AU  - Liu, H.
AU  - Moore, R.
AU  - Scarino, A. J.
AU  - Shook, M.
AU  - Shingler, T. J.
AU  - Thornhill, K. L.
AU  - Tornow, F.
AU  - Xiao, H.
AU  - Zeng, X.
PY  - 2023
TI  - Large-eddy simulations of marine boundary layer clouds associated with cold-air outbreaks during the ACTIVATE Campaign. Part II: Aerosol-meteorology-cloud interaction
JA  - J. Atmos. Sci.
DO  - 10.1175/JAS-D-21-0324.1
ER  -

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