Articles | Volume 14, issue 6
Research article
22 Dec 2023
Research article |  | 22 Dec 2023

Understanding variations in downwelling longwave radiation using Brutsaert's equation

Yinglin Tian, Deyu Zhong, Sarosh Alam Ghausi, Guangqian Wang, and Axel Kleidon

Data sets

FLUXNET2015 Dataset: CC-BY-4.0 FLUXNET2015 cummunity

CERES and GEO-Enhanced TOA, Within-Atmosphere and Surface Fluxes NASA/LARC/SD/ASDC

ERA5 monthly averaged data on single levels from 1940 to present Hersbach, H., et al.

NOAA PSL CPC Global Unified Temperature

NOAA PSL CPC Global Unified Gauge-Based Analysis of Daily Precipitation

Short summary
Downward longwave radiation (Rld) is critical for the surface energy budget, but its climatological variation on a global scale is not yet well understood physically. We use a semi-empirical equation derived by Brutsaert (1975) to identify the controlling role that atmospheric heat storage plays in spatiotemporal variations of Rld. Our work helps us to better understand aspects of climate variability, extreme events, and global warming by linking these to the mechanistic contributions of Rld.
Final-revised paper