How can we understand the global distribution of the solar cycle signal on
the Earth's surface?

Kodera, Kunihiko; Thiéblemont, Rémi; Yukimoto, Seiji; Matthes, Katja

doi:https://doi.org/10.5194/acp-16-12925-2016

Articles | Volume 16, issue 20

https://doi.org/10.5194/acp-16-12925-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-12925-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 20

Research article

|

19 Oct 2016

Research article |

| 19 Oct 2016

How can we understand the global distribution of the solar cycle signal on the Earth's surface?

Kunihiko Kodera, Rémi Thiéblemont, Seiji Yukimoto, and Katja Matthes

Data sets

ERA-Interim dataset ECMWF http://apps.ecmwf.int/datasets/

F10.7 cm solar radio flux dataset LASP http://lasp.colorado.edu/lisird/tss/noaa_radio_flux.html

Aerosols Optical Depth NASA http://data.giss.nasa.gov/modelforce/strataer/tau.line_2012.12.txt

NOAA Extended Reconstructed SST v3b (ERSST) NOAA http://www.esrl.noaa.gov/psd/data/gridded/data.noaa.ersst.html

Solar Sunspot Number SIDC http://www.sidc.be/silso/datafiles

CO2 concentration dataset UVIC http://climate.uvic.ca/EMICAR5/forcing_data/RCP85_MIDYR_CONC.DAT

Short summary

The spatial structure of the solar cycle signals on the Earth's surface is analysed to identify the mechanisms. Both tropical and extratropical solar surface signals can result from circulation changes in the upper stratosphere through (i) a downward migration of wave zonal mean flow interactions and (ii) changes in the stratospheric mean meridional circulation. Amplification of the solar signal also occurs through interaction with the ocean.