Sensitivity of atmospheric energy budget on two-moment representation of cloud microphysics in idealized simulations of convective radiative quasi-equilibrium
Sensitivity of atmospheric energy budget on two-moment representation of cloud microphysics in idealized simulations of convective radiative quasi-equilibrium
复制标题
对流辐射准平衡理想化模拟中大气能量收支对云微物理两矩表示的敏感性
DOI：
10.1002/qj.2342
复制
发表时间：
2014
影响因子：
8.9
通讯作者：
Yuya Baba
中科院分区：
文献类型：
--
作者：
山口さとみ;倉渕隆;李時桓;小笠原岳;大平昇;阿部加奈子;梶拓央;片桐由希子;Yuya Baba
利用部分和全2M方案研究了大气能量收支对理想化对流辐射准平衡（CRQE）云微物理学的两阶矩（2M）表示的敏感性。重点讨论了2M方案对大型水凝物的敏感性。大气能量收支对第一种间接效应敏感，但对大水凝物的2M处理更敏感。大气层顶部和底部（TOA和BOA）的能量收支取决于2M处理，特别是对于大型冰水凝物（雪和霰）。预测的数值浓度通过增加雨的大小导致感热通量的减少来控制BOA的能量收支，雪的数值浓度通过增加低云和中云的上升气流云质量通量来控制TOA的能量收支。总之，能量收支控制不仅由2M表示的雨，但也表示大冰水凝物。对于大型冰水凝物，能量收支对2M处理的敏感性比雨更重要，因为处理会影响表面热通量和中低层云的特性。
Sensitivity of the atmospheric energy budget to two‐moment (2M) representation of cloud microphysics in idealized convective radiative quasi‐equilibrium (CRQE) is studied using partial and full 2M schemes. The focus is especially given to the sensitivity to 2M scheme for large hydrometeors. The atmospheric energy budget is found to be sensitive to the first indirect effect, but the energy budget is more sensitive to the 2M treatment for large hydrometeors. The top and bottom of atmosphere (TOA and BOA) energy budgets depend on 2M treatment especially for large ice hydrometeors (snow and graupel). The predicted number concentration of graupel dominates BOA energy budgets by increasing rain size leading to decrease of sensible heat flux, and that of snow dominates TOA energy budgets by enhancing updraught cloud mass flux in both low and middle clouds. In conclusion, the energy budgets are controlled not only by 2M representation of rain but also by representation of large ice hydrometeors. Sensitivity of the energy budget to 2M treatment for large ice hydrometeors is more significant than that for rain because the treatment impacts properties of surface heat fluxes and both low and mid‐level clouds.