Publication Abstracts

Su et al. 2021

Su, W., L. Liang, G. Myhre, T.J Thorsen, N.G Loeb, G.L Schuster, P. Ginoux, F. Paulot, D. Neubauer, R. Checa-Garcia, H. Matsui, K. Tsigaridis, R.B. Skeie, T. Takemura, S.E. Bauer, and M. Schulz, 2021: Understanding top-of-atmosphere flux bias in the AeroCom Phase III models: A clear-sky perspective. J. Adv. Model. Earth Syst., 13, no. 9, e2021MS002584, doi:10.1029/2021MS002584.

Biases in aerosol optical depths (AOD) and land surface albedos in the AeroCom models are manifested in the top-of-atmosphere (TOA) clear-sky reflected shortwave (SW) fluxes. Biases in the SW fluxes from AeroCom models are quantitatively related to biases in AOD and land surface albedo by using their radiative kernels. Over ocean, AOD contributes about 25% to the 60°S-60°N mean SW flux bias for the multi-model mean (MMM) result. Over land, AOD and land surface albedo contribute about 40% and 30%, respectively, to the 60°S-60°N mean SW flux bias for the MMM result. Furthermore, the spatial patterns of the SW flux biases derived from the radiative kernels are very similar to those between models and CERES observation, with the correlation coefficient of 0.6 over ocean and 0.76 over land for MMM using data of 2010. Satellite data used in this evaluation are derived independently from each other, consistencies in their bias patterns when compared with model simulations suggest that these patterns are robust. This highlights the importance of evaluating related variables in a synergistic manner to provide an unambiguous assessment of the models, as results from single parameter assessments are often confounded by measurement uncertainty. We also compare the AOD trend from three models with the observation-based counterpart. These models reproduce all notable trends in AOD (i.e. decreasing trend over eastern United States and increasing trend over India) except the decreasing trend over eastern China and the adjacent oceanic regions due to limitations in the emission dataset.

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BibTeX Citation

  author={Su, W. and Liang, L. and Myhre, G. and Thorsen, T. J and Loeb, N. G and Schuster, G. L and Ginoux, P. and Paulot, F. and Neubauer, D. and Checa-Garcia, R. and Matsui, H. and Tsigaridis, K. and Skeie, R. B. and Takemura, T. and Bauer, S. E. and Schulz, M.},
  title={Understanding top-of-atmosphere flux bias in the AeroCom Phase III models: A clear-sky perspective},
  journal={Journal of Advances in Modeling Earth Systems},

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RIS Citation

ID  - su01200v
AU  - Su, W.
AU  - Liang, L.
AU  - Myhre, G.
AU  - Thorsen, T. J
AU  - Loeb, N. G
AU  - Schuster, G. L
AU  - Ginoux, P.
AU  - Paulot, F.
AU  - Neubauer, D.
AU  - Checa-Garcia, R.
AU  - Matsui, H.
AU  - Tsigaridis, K.
AU  - Skeie, R. B.
AU  - Takemura, T.
AU  - Bauer, S. E.
AU  - Schulz, M.
PY  - 2021
TI  - Understanding top-of-atmosphere flux bias in the AeroCom Phase III models: A clear-sky perspective
JA  - J. Adv. Model. Earth Syst.
JO  - Journal of Advances in Modeling Earth Systems
VL  - 13
IS  - 9
SP  - e2021MS002584
DO  - 10.1029/2021MS002584
ER  -

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