Articles | Volume 18, issue 7
Atmos. Chem. Phys., 18, 4597–4615, 2018
https://doi.org/10.5194/acp-18-4597-2018
Atmos. Chem. Phys., 18, 4597–4615, 2018
https://doi.org/10.5194/acp-18-4597-2018

Research article 05 Apr 2018

Research article | 05 Apr 2018

Nonlinear response of tropical lower-stratospheric temperature and water vapor to ENSO

Chaim I. Garfinkel et al.

Data sets

Monthly Nino indices based on ERSSTv5 data NCEP CPC http://www.cpc.ncep.noaa.gov/data/indices/ersst5.nino.mth.81-10.ascii

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Short summary
The impact of El Niño in the lower stratosphere is nonlinear in spring. While moderate El Niño events lead to cooling in this region, strong El Niño events appear to lead to warming, and hence the water vapor response is nonlinear too. The net effect is that strong El Nino events, such as in 1997/1998 and 2015/2016, lead to qualitatively different water vapor impacts as compared to moderate El Nino events.
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