Effects of convective ice evaporation on interannual variability of tropical tropopause layer water vapor

Ye, Hao; Dessler, Andrew E.; Yu, Wandi

doi:https://doi.org/10.5194/acp-18-4425-2018

Articles | Volume 18, issue 7

https://doi.org/10.5194/acp-18-4425-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-4425-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 7

Research article

|

03 Apr 2018

Research article |

| 03 Apr 2018

Effects of convective ice evaporation on interannual variability of tropical tropopause layer water vapor

Hao Ye, Andrew E. Dessler, and Wandi Yu

Data sets

WV-TTL: water vapor mixing ratio from GEOSCCM and trajectory model simulations in tropical tropopause layer H. Ye, A. Dessler, and W. Yu https://doi.org/10.5281/zenodo.1205759

Convective cloud top height L. Pfister, R. Ueyama, J.-M. Ryoo, P. W. Hillyard, and M. J. Legg https://bocachica.arc.nasa.gov/~lpfister/cloudtop/

Programs for a recent paper Ye et al., 2018 H. Ye https://github.com/yehao2013/Ye-et-al-2018

Short summary

The deep convection in tropics can inject cloud ice into tropical tropopause layer (TTL), which moistens and increases water vapor there. We primarily study the spatial distribution of impacts from several physical processes on TTL water vapor from observations and trajectory model simulations. The analysis shows the potential moistening impact from evaporation of cloud ice on TTL water vapor. A chemistry–climate model is used to confirm the impact from evaporation of convective ice.