The effect of ice supersaturation and thin cirrus on lapse rates in the upper troposphere

Gierens, Klaus; Wilhelm, Lena; Hofer, Sina; Rohs, Susanne

doi:https://doi.org/10.5194/acp-22-7699-2022

Articles | Volume 22, issue 11

https://doi.org/10.5194/acp-22-7699-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-7699-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 11

Research article

|

15 Jun 2022

Research article |

| 15 Jun 2022

The effect of ice supersaturation and thin cirrus on lapse rates in the upper troposphere

Klaus Gierens, Lena Wilhelm, Sina Hofer, and Susanne Rohs

Data sets

IAGOS-CORE, IAGOS-MOZAIC, IAGOS-CARIBIC IAGOS https://iagos.aeris-data. fr/download/#/

ERA5: Fifth genera- tion of ECMWF atmospheric reanalyses of the global climate Copernicus Climate Change Service (C3S) https://cds.climate.copernicus.eu/cdsapp# !/dataset/reanalysis-era5-pressure-levels?tab=form

PArallel MOdel data REtrieve from Oracle databases (Pamore) Deutscher Wetterdienst https://www.dwd.de/DE/leistungen/ pamore/pamore.html?nn=342666

Short summary

We are interested in the prediction of condensation trails, in particular strong ones. For this we need a good forecast of temperature and humidity in the levels where aircraft cruise. Unfortunately, the humidity forecast is quite difficult for these levels, in particular the ice supersaturation, which is needed for long-lasting contrails. We are thus seeking proxy variables that help distinguish situations where strong contrails can form, for instance the lapse rate.