Idealized Simulations of the Tropical Climate and Variability in the Single Column Atmosphere Model (SCAM): Radiative‐Convective Equilibrium
Idealized Simulations of the Tropical Climate and Variability in the Single Column Atmosphere Model (SCAM): Radiative‐Convective Equilibrium
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单柱大气模型 (SCAM) 中热带气候和变化的理想化模拟：辐射-对流平衡
DOI：
10.1029/2021ms002826
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发表时间：
2022
影响因子：
6.8
通讯作者：
Reed, Kevin A.
中科院分区：
文献类型：
--
作者：
Hu, I‐Kuan;Mapes, Brian E.;Tulich, Stefan N.;Neale, Richard B.;Gettelman, Andrew;Reed, Kevin A.
为了探索社区大气模式（CAM）中柱过程之间的相互作用，CAM的单柱版本（SCAM）在辐射对流平衡（RCE）中积分了1000天，边界条件为热带值，跨越模式物理版本的参数或配置空间（v5 vs. v6），垂直分辨率（标准和60级），海表面温度（SST），和一些解释驱动的实验。模拟的时间平均气候是合理的，接近观测和循环云解析模式的RCE。深对流方案中的上升气流消散在湿度和云中产生了独特的网格尺度结构，这些结构也与辐射传输过程相互作用。这些网格伪影在其他地方报告的多列RCE结果中平均化，说明了SCAM添加到模型配置层次结构中的螺母和螺栓可解释性。降水的多日振荡是由对流层顶附近的暖对流覆盖层下降引起的，最终由对流加深的爆发重新设置。实验揭示了这些振荡如何严重依赖于一个内部参数，该参数控制着用于确定云顶和计算深对流方案中稀释对流可用势能的中性浮力水平的数量，并且仅通过禁用云底辐射（云底加热）进行了少许修改。一维瞬态行为对该参数的强烈依赖性将在本工作的第二部分中进行测试，其中SCAM耦合到二维线性重力波的参数化动力学，并在未来的研究中进行3D模拟。
To explore the interactions among column processes in the Community Atmosphere Model (CAM), the single‐column version of CAM (SCAM) is integrated for 1000 days in radiative‐convective equilibrium (RCE) with tropical values of boundary conditions, spanning a parameter or configuration space of model physics versions (v5 vs. v6), vertical resolution (standard and 60 levels), sea surface temperature (SST), and some interpretation‐driven experiments. The simulated time‐mean climate is reasonable, near observations and RCE of a cyclic cloud‐resolving model. Updraft detrainment in the deep convection scheme produces distinctive grid‐scale structures in humidity and cloud, which also interact with radiative transfer processes. These grid artifacts average out in multi‐column RCE results reported elsewhere, illustrating the nuts‐and‐bolts interpretability that SCAM adds to the hierarchy of model configurations. Multi‐day oscillations of precipitation arise from descent of warm convection‐capping layers starting near the tropopause, eventually reset by a burst of convective deepening. Experiments reveal how these oscillations depend critically on an internal parameter that controls the number of neutral buoyancy levels allowed for determining cloud top and computing dilute convective available potential energy in the deep convection scheme, and merely modified a little by disabling cloud‐base radiation (heating of cloud base). This strong dependence of transient behavior in 1D on this parameter will be tested in the second part of this work, in which SCAM is coupled to a parameterized dynamics of two‐dimensional, linearized gravity wave, and in the 3D simulations in future study.
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影响因子：
8.9
作者：
D. Williamson
通讯作者：
D. Williamson
影响因子：
6.8
作者：
Wing AA;Stauffer CL;Becker T;Reed KA;Ahn MS;Arnold NP;Bony S;Branson M;Bryan GH;Chaboureau JP;De Roode SR;Gayatri K;Hohenegger C;Hu IK;Jansson F;Jones TR;Khairoutdinov M;Kim D;Martin ZK;Matsugishi S;Medeiros B;Miura H;Moon Y;Müller SK;Ohno T;Popp M;Prabhakaran T;Randall D;Rios-Berrios R;Rochetin N;Roehrig R;Romps DM;Ruppert JH Jr;Satoh M;Silvers LG;Singh MS;Stevens B;Tomassini L;van Heerwaarden CC;Wang S;Zhao M
通讯作者：
Zhao M
社区氛围模型 (CAM) 中的能源考虑因素
影响因子：
6.8
作者：
D. Williamson;J. Olson;C. Hannay;T. Toniazzo;M. Taylor;V. Yudin
通讯作者：
V. Yudin
辐射对流平衡和有组织对流：观测视角
DOI：
10.1029/2018jd030092
发表时间：
2019
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
C. Jakob;M. S. Singh;L. Jungandreas
通讯作者：
L. Jungandreas
影响因子：
6.8
作者：
K. Reed;Levi G. Silvers;A. Wing;I. Hu;B. Medeiros
通讯作者：
K. Reed;Levi G. Silvers;A. Wing;I. Hu;B. Medeiros