Observed Signatures of the Barotropic and Baroclinic Annular Modes in Cloud Vertical Structure and Cloud Radiative Effects
Observed Signatures of the Barotropic and Baroclinic Annular Modes in Cloud Vertical Structure and Cloud Radiative Effects
复制标题
云垂直结构中正压和斜斜环模的观测特征和云辐射效应
DOI：
10.1175/jcli-d-15-0692.1
复制
发表时间：
2016
影响因子：
4.9
通讯作者：
D. Thompson
中科院分区：
文献类型：
--
作者：
Ying Li;D. Thompson
在垂直分辨的CloudSat和其他卫星和再分析数据产品中检查了云的垂直结构和云辐射效应上的大尺度环形变率的特征。北方和南方的“正压”环形模态（NAM和SAM）具有复杂的垂直结构。两者都与副极地和中纬度之间的云中的纬向偶极子有关，但异常的符号在对流层上层、中层和下层之间变化。相反，北方和南方斜压环形模态的垂直结构则简单得多。两者都与中高纬度地区对流层云层中相同符号的异常有关。与正压和斜压环形模式相关的云入射率的变化与伴随的静稳定性和/或垂直运动变化的动力强迫是一致的。结果还提供了第一个观测估计的垂直分辨率的一个…
AbstractThe signatures of large-scale annular variability on the vertical structure of clouds and cloud radiative effects are examined in vertically resolved CloudSat and other satellite and reanalysis data products. The northern and southern “barotropic” annular modes (the NAM and SAM) have a complex vertical structure. Both are associated with a meridional dipole in clouds between subpolar and middle latitudes, but the sign of the anomalies changes between upper, middle, and lower tropospheric levels. In contrast, the northern and southern baroclinic annular modes have a much simpler vertical structure. Both are linked to same-signed anomalies in clouds extending throughout the troposphere at middle to high latitudes. The changes in cloud incidence associated with both the barotropic and baroclinic annular modes are consistent with dynamical forcing by the attendant changes in static stability and/or vertical motion. The results also provide the first observational estimates of the vertically resolved a...
影响因子：
6.8
作者：
Crueger, Traute;Stevens, Bjorn
通讯作者：
Stevens, Bjorn