Modeling the August 2002 minor warming event
Modeling the August 2002 minor warming event
复制标题
对 2002 年 8 月小幅变暖事件进行建模
DOI：
10.1029/2005gl022400
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发表时间：
2005
影响因子：
5.2
通讯作者：
T. Hogan
中科院分区：
文献类型：
--
作者：
L. Coy;D. Siskind;S. Eckermann;J. McCormack;D. R. Allen;T. Hogan
用美国海军作战预报模式的一个新的高海拔版本制作了2002年8月南半球次要平流层变暖和中层冷却事件的后播，并与SABER(使用宽带发射辐射测量探测大气)获得的温度进行了比较。结果显示了平流层变暖和中层冷却在10天时间段内的真实半球演变。使用瑞利摩擦来模拟中层重力波阻力表明，与没有瑞利摩擦的后预报相比，中上层的情况有所改善。主要中间层冷却特征的有限垂直范围与Liu和Roble(2002)模型的结果不一致，但得到了Saber温度观测(Siskind等人，2005年)的支持。对10天预报的3DEP通量向量的检验表明，导致变暖/变冷事件的行星波来自对流层水平局部化区域。
Hindcasts of the Southern Hemisphere minor stratospheric warming and mesospheric cooling event of August 2002, made with a new high altitude version of the Navy's operational forecast model, are compared with temperatures acquired by SABER (Sounding of the Atmosphere using Broadband Emission Radiometry). Results show realistic hemispheric evolution of both the stratospheric warming and mesospheric cooling over a 10‐day time period. Use of Rayleigh friction to model mesospheric gravity wave drag shows improvement in the upper mesosphere over a hindcast without Rayleigh friction. The limited vertical extent of the main mesospheric cooling signature disagrees with the Liu and Roble (2002) model results but is supported by SABER temperature observations (Siskind et al., 2005). Examination of 3D EP‐flux vectors over the 10‐day forecast suggests that the planetary wave responsible for the warming/cooling event originated from a horizontally localized region of the troposphere.