Effects of Arctic sea-ice concentration on surface radiative fluxes in four atmospheric reanalyses

Uhlíková, Tereza; Vihma, Timo; Karpechko, Alexey Yu; Uotila, Petteri

doi:https://doi.org/10.5194/tc-19-1031-2025

Articles | Volume 19, issue 3

https://doi.org/10.5194/tc-19-1031-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-19-1031-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 3

Research article

|

06 Mar 2025

Research article |

| 06 Mar 2025

Effects of Arctic sea-ice concentration on surface radiative fluxes in four atmospheric reanalyses

Tereza Uhlíková, Timo Vihma, Alexey Yu Karpechko, and Petteri Uotila

Supplement

https://doi.org/10.5194/tc-19-1031-2025-supplement

Data sets

Tavg1_2d_flx_Nx: MERRA-2 2D, 1-Hourly, Time-Averaged, Single-Level Assimilation, Single-Level Diagnostics GMAO (Global Modeling and Assimilation Office) https://doi.org/10.5067/7MCPBJ41Y0K6

Tavg1_2d_rad_Nx: MERRA-2 2D, 1-hourly, Time-Averaged, Single-Level Assimilation, Surface Flux Diagnostics V5.12.4 GMAO (Global Modeling and Assimilation Office) https://doi.org/10.5067/Q9QMY5PBNV1T

Tavg1_2d_slv_Nx: MERRA-2 2D, 1-Hourly, Time-Averaged, Single-Level Assimilation, Single-Level Diagnostics GMAO (Global Modeling and Assimilation Office) https://doi.org/10.5067/VJAFPLI1CSIV

ERA5 hourly data on single levels from 1940 to present Hans Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

JRA-55: Japanese 55-year Reanalysis, Daily 3-Hourly and 6-Hourly Data Japan Meteorological Agency (JMA) https://doi.org/10.5065/D6HH6H41

NCEP Climate Forecast System Reanalysis (CFSR) 6-hourly Products, January 1979 to December 2010 Suranjana Saha et al. https://doi.org/10.5065/D69K487J

NCEP Climate Forecast System Version 2 (CFSv2) 6-hourly Products Suranjana Saha et al. https://doi.org/10.5065/D61C1TXF

Model code and software

Codes used for calculations and plotting in manuscript: Effects of Arctic sea-ice concentration on surface radiative fluxes in four atmospheric reanalyses Petteri Uotila and Tereza Uhlíková https://doi.org/10.5281/zenodo.11565044

Short summary

To better understand the local, regional, and global impacts of the recent rapid sea-ice decline in the Arctic, one of the key issues is to quantify the effects of sea-ice concentration on the surface radiative fluxes. We analyse these effects utilising four data sets called atmospheric reanalyses, and we evaluate uncertainties in these effects arising from inter-reanalysis differences in the sensitivity of the surface radiative fluxes to sea-ice concentration.