A reexamination of the “stratospheric fountain” hypothesis
A reexamination of the “stratospheric fountain” hypothesis
复制标题
对“平流层喷泉”假说的重新审视
DOI：
10.1029/1998gl900120
复制
发表时间：
1998
影响因子：
5.2
通讯作者：
A. Dessler
中科院分区：
文献类型：
--
作者：
A. Dessler
我们通过比较进入平流层的水汽的年平均和纬向平均体积混合比（vmr）的估计值与热带对流层顶区域饱和vmr的年平均和纬向平均估计值，重新检验了“平流层喷泉”假说。我们发现进入平流层的水汽的vmr（3.8±0.3 ppmv）与热带对流层顶区域的饱和vmr（4.0±0.8 ppmv）非常一致。因此，我们的分析不支持“平流层喷泉”假说，该假说要求对流层到平流层的输送优先发生在热带对流层顶比平均温度低的地区。
We reexamine the “stratospheric fountain” hypothesis by comparing estimates of the annually and zonally averaged volume mixing ratio (vmr) of water vapor entering the stratosphere to annually and zonally averaged estimates of the saturation vmr of the tropical tropopause‐region. We find that the vmr of water vapor entering the stratosphere (3.8±0.3 ppmv) agrees well with the saturation vmr of the tropical tropopause‐region (4.0±0.8 ppmv). Consequently, our analysis provides no support for the “stratospheric fountain” hypothesis, which required troposphere‐to‐stratosphere transport to occur preferentially in regions where the tropical tropopause is colder than average.