Trends in observed surface solar radiation and  their causes in Brazil in the first 2 decades  of the 21st century

Ferreira Correa, Lucas; Folini, Doris; Chtirkova, Boriana; Wild, Martin

doi:https://doi.org/10.5194/acp-24-8797-2024

Articles | Volume 24, issue 15

https://doi.org/10.5194/acp-24-8797-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-8797-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 15

Research article

|

09 Aug 2024

Research article |

| 09 Aug 2024

Trends in observed surface solar radiation and their causes in Brazil in the first 2 decades of the 21st century

Lucas Ferreira Correa, Doris Folini, Boriana Chtirkova, and Martin Wild

Data sets

Baseline surface radiation data (1992-2017) Amelie Driemel et al. https://doi.org/10.1594/PANGAEA.880000

ERA5 monthly averaged data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.f17050d7

CLARA-A3: CM SAF cLoud, Albedo and surface RAdiation dataset from AVHRR data - Edition 3 Karl-Göran Karlsson et al. https://doi.org/10.5676/EUM_SAF_CM/CLARA_AVHRR/V003

CERES Time-Interpolated TOA Fluxes, Clouds and Aerosols Monthly Terra Edition4A NASA/LARC/SD/ASDC https://doi.org/10.5067/TERRA/CERES/SSF1DEGMONTH_L3.004A

OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo L3 1 day 1.0 degreex1.0 degree V3 Omar O. Torres https://doi.org/10.5067/Aura/OMI/DATA3003

Short summary

We investigated the causes of the decadal trends of solar radiation measured at 34 stations in Brazil in the first 2 decades of the 21st century. We observed strong negative trends in north and northeast Brazil associated with changes in both atmospheric absorption (anthropogenic) and cloud cover (natural). In other parts of the country no strong trends were observed as a result of competing effects. This provides a better understanding of the energy balance in the region.